--- title: "Washington to Castries cheap flights from $260 (IAD to SLU) - Expedia" description: "Cheap Flights from Washington (IAD) to Castries (SLU) start at $260 for one-way and $638 for round trip. Earn your airline miles on top of our rewards!" canonical: "https://www.expedia.com/lp/flights/iad/slu/washington-to-castries" language: en-US market: US currency: USD prices_as_of: 2026-11-13T22:58:20Z --- # $244 Cheap Flights from Washington (IAD) to Castries (SLU) ![A beach with clear turquoise water, a sandy shore, and a backdrop of lush green hills with buildings.](https://images.trvl-media.com/place/553248621533157962/427c3ca0-a24c-4935-aa2f-199315cd7f76.jpg?impolicy=fcrop&w=1200&h=500&q=medium) [View $244 flight on Sat, Apr 17, 2027](https://www.expedia.com/Flights-Search?leg1=from:IAD,to:UVF,departure:4/17/2027TANYT&trip=oneway&passengers=adults:1,children:0,infantinlap:N&mode=search&pageId=0&flp=mdl:flights-flex-module,price:243.80&airProductToken=AQpoCjIIwYYBEgQ4NjE1GIgYIJjOASiD1qoDMNvWqgM4R0AAWAFqBUJBU0lDcghHTFlFVDJCQQoyCMGGARIEMTg3OBiYzgEgtC0oweGqAzD846oDOEdAAVgBagVCQVNJQ3IIR0xZRVQyQkESDAgCEAEYAioCQUMyABgBIgQIARABKAIoAygEMA0) ## Popular airlines from Washington Dulles Intl. Airport (IAD) to George F. L. Charles Airport (SLU) [American Airlines](https://www.expedia.com/Flights-Search?leg1=from:IAD,to:SLU,departure:11/27/2026TANYT&leg2=from:SLU,to:IAD,departure:12/4/2026TANYT&trip=roundtrip&passengers=adults:1,children:0,infantinlap:N&mode=search&pageId=0&filters=[{"preferredAirlineFilterValue":{"carrierCode":"AA"}}]) [United](https://www.expedia.com/Flights-Search?leg1=from:IAD,to:SLU,departure:11/27/2026TANYT&leg2=from:SLU,to:IAD,departure:12/4/2026TANYT&trip=roundtrip&passengers=adults:1,children:0,infantinlap:N&mode=search&pageId=0&filters=[{"preferredAirlineFilterValue":{"carrierCode":"UA"}}]) [Southwest Airlines](https://www.expedia.com/Flights-Search?leg1=from:IAD,to:SLU,departure:11/27/2026TANYT&leg2=from:SLU,to:IAD,departure:12/4/2026TANYT&trip=roundtrip&passengers=adults:1,children:0,infantinlap:N&mode=search&pageId=0&filters=[{"preferredAirlineFilterValue":{"carrierCode":"WN"}}]) [Delta](https://www.expedia.com/Flights-Search?leg1=from:IAD,to:SLU,departure:11/27/2026TANYT&leg2=from:SLU,to:IAD,departure:12/4/2026TANYT&trip=roundtrip&passengers=adults:1,children:0,infantinlap:N&mode=search&pageId=0&filters=[{"preferredAirlineFilterValue":{"carrierCode":"DL"}}]) [Frontier Airlines](https://www.expedia.com/Flights-Search?leg1=from:IAD,to:SLU,departure:11/27/2026TANYT&leg2=from:SLU,to:IAD,departure:12/4/2026TANYT&trip=roundtrip&passengers=adults:1,children:0,infantinlap:N&mode=search&pageId=0&filters=[{"preferredAirlineFilterValue":{"carrierCode":"F9"}}]) [JetBlue Airways](https://www.expedia.com/Flights-Search?leg1=from:IAD,to:SLU,departure:11/27/2026TANYT&leg2=from:SLU,to:IAD,departure:12/4/2026TANYT&trip=roundtrip&passengers=adults:1,children:0,infantinlap:N&mode=search&pageId=0&filters=[{"preferredAirlineFilterValue":{"carrierCode":"B6"}}]) [Alaska Airlines](https://www.expedia.com/Flights-Search?leg1=from:IAD,to:SLU,departure:11/27/2026TANYT&leg2=from:SLU,to:IAD,departure:12/4/2026TANYT&trip=roundtrip&passengers=adults:1,children:0,infantinlap:N&mode=search&pageId=0&filters=[{"preferredAirlineFilterValue":{"carrierCode":"AS"}}]) ### Be in the know Get alerts if flight prices drop or rise\* ### Book smarter Save up to 30% on select hotels after you book a flight\* ### Earn twice Earn your airline miles on top of our OneKeyCash [Learn about One Key](https://www.expedia.com/welcome-one-key) ## Cheap Flights from Washington to Castries (IAD-SLU) Prices were available within the past 7 days and start at $244 for one-way flights and $638 for roundtrip, for the period specified. Prices and availability are subject to change. All deals One way Roundtrip [Select Air Canada flight, departing Thu, Dec 3 from Washington to Vieux Fort, returning Sun, Dec 6, priced at $638 Found 3 hours ago](https://www.expedia.com/Flights-Search?leg1=from:IAD,to:UVF,departure:12/3/2026TANYT&leg2=from:UVF,to:IAD,departure:12/6/2026TANYT&trip=roundtrip&passengers=adults:1,children:0,infantinlap:N&mode=search&pageId=0&flp=mdl:flights-flex-module,price:637.49&airProductToken=AQpoCjIIwYYBEgQ4NjE1GIgYIJjOASjf554DMLbongM4R0AAWAFqBUJBU0lDcghHTFlFVDJCQQoyCMGGARIEMTg3OBiYzgEgtC0onfOeAzDY9Z4DOEdAAVgBagVCQVNJQ3IIR0xZRVQyQkEKaAoyCMGGARIEMTg3ORi0LSCYzgEoz4yfAzCtj58DOEdAAFgBagVCQVNJQ3IIR0xZRVQyQkEKMgjBhgESBDg2MjAYmM4BIIgYKOyYnwMwxpmfAzhHQAFYAWoFQkFTSUNyCEdMWUVUMkJBEgoIAhABGAIqAkFDGAEiBAgBEAEoAigDKAQwDQ) Thu, Dec 3 - Sun, Dec 6 · IAD · UVF · Round · trip [Select Air Canada flight, departing Wed, Dec 9 from Washington to Vieux Fort, returning Mon, Dec 14, priced at $638 Found 16 hours ago](https://www.expedia.com/Flights-Search?leg1=from:IAD,to:UVF,departure:12/9/2026TANYT&leg2=from:UVF,to:IAD,departure:12/14/2026TANYT&trip=roundtrip&passengers=adults:1,children:0,infantinlap:N&mode=search&pageId=0&flp=mdl:flights-flex-module,price:637.69&airProductToken=AQpoCjIIwYYBEgQ4NjE5GIgYIJjOASiqrp8DMIGvnwM4R0AAWAFqBUJBU0lDcghHTFlFVDJCQQoyCMGGARIEMTg3OBiYzgEgtC0o3bafAzCYuZ8DOEdAAVgBagVCQVNJQ3IIR0xZRVQyQkEKaAoyCMGGARIEMTg3ORi0LSCYzgEoz-afAzCt6Z8DOEdAAFgBagVCQVNJQ3IIR0xZRVQyQkEKMgjBhgESBDg2MjAYmM4BIIgYKOzynwMwxvOfAzhHQAFYAWoFQkFTSUNyCEdMWUVUMkJBEgoIAhABGAIqAkFDGAEiBAgBEAEoAigDKAQwDQ) Wed, Dec 9 - Mon, Dec 14 · IAD · UVF · Roundtrip [Select Air Canada flight, departing Sat, Nov 28 from Washington to Vieux Fort, returning Mon, Nov 30, priced at $644 Found 3 days ago](https://www.expedia.com/Flights-Search?leg1=from:IAD,to:UVF,departure:11/28/2026TANYT&leg2=from:UVF,to:IAD,departure:11/30/2026TANYT&trip=roundtrip&passengers=adults:1,children:0,infantinlap:N&mode=search&pageId=0&flp=mdl:flights-flex-module,price:643.89&airProductToken=AQpoCjIIwYYBEgQ4NjE5GIgYIJjOASjKsp4DMKGzngM4R0AAWAFqBUJBU0lDcghHTFlFVDJCQQoyCMGGARIEMTg3OBiYzgEgtC0o%5FbqeAzC4vZ4DOEdAAVgBagVCQVNJQ3IIR0xZRVQyQkEKaAoyCMGGARIEMTg3ORi0LSCYzgEoj8meAzDty54DOEtAAFgBagVCQVNJQ3IIS0xZRVQyQkEKMgjBhgESBDg2MjAYmM4BIIgYKKzVngMwhtaeAzhLQAFYAWoFQkFTSUNyCEtMWUVUMkJBEgoIAhABGAIqAkFDGAEiBAgBEAEoAigDKAQwDQ) Sat, Nov 28 - Mon, Nov 30 · IAD · UVF · Roundtrip [Select Air Canada flight, departing Sat, Dec 5 from Washington to Vieux Fort, returning Sun, Dec 13, priced at $648 Found 8 hours ago](https://www.expedia.com/Flights-Search?leg1=from:IAD,to:UVF,departure:12/5/2026TANYT&leg2=from:UVF,to:IAD,departure:12/13/2026TANYT&trip=roundtrip&passengers=adults:1,children:0,infantinlap:N&mode=search&pageId=0&flp=mdl:flights-flex-module,price:647.49&airProductToken=AQpoCjIIwYYBEgQ4NjE5GIgYIJjOASiqgZ8DMIGCnwM4R0AAWAFqBUJBU0lDcghHTFlFVDJCQQoyCMGGARIEMTg3OBiYzgEgtC0o3YmfAzCYjJ8DOEdAAVgBagVCQVNJQ3IIR0xZRVQyQkEKdAoyCMGGARIEMTg3ORi0LSCYzgEor9ufAzCN3p8DOEdAAFgBagVCQVNJQ3IIR0xZRVQyQkEKPgjBhgESBDM5MDQYmM4BIIgYKIzonwMw8uifAzhHQAFYAWoFQkFTSUNyCEdMWUVUMkJBegoI1YIBEgQzNDY2EgoIARABGAEqAkFDGAEiBAgBEAEoAigDKAQwDQ) Sat, Dec 5 - Sun, Dec 13 · IAD · UVF · Roundtrip [Select Air Canada flight, departing Wed, Dec 9 from Washington to Vieux Fort, returning Mon, Dec 14, priced at $648 Found 16 hours ago](https://www.expedia.com/Flights-Search?leg1=from:IAD,to:UVF,departure:12/9/2026TANYT&leg2=from:UVF,to:IAD,departure:12/14/2026TANYT&trip=roundtrip&passengers=adults:1,children:0,infantinlap:N&mode=search&pageId=0&flp=mdl:flights-flex-module,price:647.69&airProductToken=AQpoCjIIwYYBEgQ4NjE5GIgYIJjOASiqrp8DMIGvnwM4R0AAWAFqBUJBU0lDcghHTFlFVDJCQQoyCMGGARIEMTg3OBiYzgEgtC0o3bafAzCYuZ8DOEdAAVgBagVCQVNJQ3IIR0xZRVQyQkEKqAEKMgjBhgESBDE4NzkYtC0gmM4BKM%5FmnwMwremfAzhHQABYAWoFQkFTSUNyCEdMWUVUMkJBCjIIwYYBEgM0NzIYmM4BINizASiq6p8DMPDqnwM4R0ABWAFqBUJBU0lDcghHTFlFVDJCQQo-CMGGARIENDY5NhjYswEgiBgo1e6fAzDQ758DOEdAAVgBagVCQVNJQ3IIR0xZRVQyQkF6CgjVggESBDM0NjcSCggBEAEYASoCQUMYASIECAEQASgCKAMoBDAN) Wed, Dec 9 - Mon, Dec 14 · IAD · UVF · Roundtrip [Select Air Canada flight, departing Sat, Nov 28 from Washington to Vieux Fort, returning Wed, Dec 2, priced at $651 Found 17 hours ago](https://www.expedia.com/Flights-Search?leg1=from:IAD,to:UVF,departure:11/28/2026TANYT&leg2=from:UVF,to:IAD,departure:12/2/2026TANYT&trip=roundtrip&passengers=adults:1,children:0,infantinlap:N&mode=search&pageId=0&flp=mdl:flights-flex-module,price:650.99&airProductToken=AQpoCjIIwYYBEgQ4NjE5GIgYIJjOASjKsp4DMKGzngM4R0AAWAFqBUJBU0lDcghHTFlFVDJCQQoyCMGGARIEMTg3OBiYzgEgtC0o%5FbqeAzC4vZ4DOEdAAVgBagVCQVNJQ3IIR0xZRVQyQkEKpgEKMgjBhgESBDE4NzkYtC0gmM4BKM%5FfngMwreKeAzhHQABYAWoFQkFTSUNyCEdMWUVUMkJBCjEIwYYBEgM0ODAYmM4BIJhdKIjmngMw4uaeAzhHQAFYAWoFQkFTSUNyCEdMWUVUMkJBCj0IwYYBEgQzODE5GJhdIIgYKOHpngMw5uqeAzhHQAFYAWoFQkFTSUNyCEdMWUVUMkJBegoI1YIBEgQzNDE0EgoIARABGAEqAkFDGAEiBAgBEAEoAigDKAQwDQ) Sat, Nov 28 - Wed, Dec 2 · IAD · UVF · Roundtrip [Select Air Canada flight, departing Wed, Dec 9 from Washington to Vieux Fort, returning Fri, Dec 18, priced at $654 Found 5 hours ago](https://www.expedia.com/Flights-Search?leg1=from:IAD,to:UVF,departure:12/9/2026TANYT&leg2=from:UVF,to:IAD,departure:12/18/2026TANYT&trip=roundtrip&passengers=adults:1,children:0,infantinlap:N&mode=search&pageId=0&flp=mdl:flights-flex-module,price:653.49&airProductToken=AQpoCjIIwYYBEgQ4NjE1GIgYIJjOASifq58DMParnwM4R0AAWAFqBUJBU0lDcghHTFlFVDJCQQoyCMGGARIEMTg3OBiYzgEgtC0o3bafAzCYuZ8DOEdAAVgBagVCQVNJQ3IIR0xZRVQyQkEKaAoyCMGGARIEMTg3ORi0LSCYzgEoz5OgAzCtlqADOEtAAFgBagVCQVNJQ3IIS0xZRVQyQkEKMgjBhgESBDg2MTgYmM4BIIgYKOOdoAMwvZ6gAzhLQAFYAWoFQkFTSUNyCEtMWUVUMkJBEgwIAhABGAIqAkFDMgAYASIECAEQASgCKAMoBDAN) Wed, Dec 9 - Fri, Dec 18 · IAD · UVF · Roundtrip [Select American Airlines flight, departing Mon, Dec 14 from Washington to Vieux Fort, returning Thu, Dec 17, priced at $667 Just found](https://www.expedia.com/Flights-Search?leg1=from:IAD,to:UVF,departure:12/14/2026TANYT&leg2=from:UVF,to:IAD,departure:12/17/2026TANYT&trip=roundtrip&passengers=adults:1,children:0,infantinlap:N&mode=search&pageId=0&flp=mdl:flights-flex-module,price:666.29&airProductToken=AQpoCjIIwYIBEgQxNjM3GIgYIOKaASiQ4p8DMPfinwM4QkAAWAFqBUJBU0lDcghRTFU4UEJCWQoyCMGCARIEMzEzNhjimgEgtC0oveOfAzDM5Z8DOEJAAVgBagVCQVNJQ3IIUUxVOFBCQlkKaAoyCMGCARIEMzEzNhi0LSDimgEo34egAzCPiqADOEJAAFgBagVCQVNJQ3IIUUxVOFBCQlkKMgjBggESBDUyNDkY4poBIIgYKJqPoAMw9Y-gAzhCQAFYAWoFQkFTSUNyCFFMVThQQkJZEgwIAhABGAIqAkFBMgAYASIECAEQASgCKAMoBDAL) Mon, Dec 14 - Thu, Dec 17 · IAD · UVF · Roundtrip [Select Delta flight, departing Tue, Feb 16 from Washington to Vieux Fort, returning Wed, Feb 24, priced at $699 Found 3 hours ago](https://www.expedia.com/Flights-Search?leg1=from:IAD,to:UVF,departure:2/16/2027TANYT&leg2=from:UVF,to:IAD,departure:2/24/2027TANYT&trip=roundtrip&passengers=adults:1,children:0,infantinlap:N&mode=search&pageId=0&flp=mdl:flights-flex-module,price:698.29&airProductToken=AQpuCjUIxJgBEgQxMTIxGIgYIOBcKNSxpQMwy7KlAzhFQABYAWoJTUFJTkJBU0lDcghUTlhONk5CWgo1CMSYARIEMTk3MBjgXCC0LSi1s6UDMLm1pQM4RUABWAFqCU1BSU5CQVNJQ3IIVE5YTjZOQloKbgo1CMSYARIEMTc4NRi0LSDgXCiJkKYDMLqSpgM4RUAAWAFqCU1BSU5CQVNJQ3IIVE5YTjZOQloKNQjEmAESBDEzMjQY4FwgiBgo8ZemAzDamKYDOEVAAVgBaglNQUlOQkFTSUNyCFROWE42TkJaEgwIARABGAEqAkRMMgAYASIECAEQASgCKAMoBDAB) Tue, Feb 16 - Wed, Feb 24 · IAD · UVF · Roundtrip [Select United flight, departing Fri, Jan 8 from Washington to Vieux Fort, returning Sat, Jan 16, priced at $767 Found 2 days ago](https://www.expedia.com/Flights-Search?leg1=from:IAD,to:UVF,departure:1/8/2027TANYT&leg2=from:UVF,to:IAD,departure:1/16/2027TANYT&trip=roundtrip&passengers=adults:1,children:0,infantinlap:N&mode=search&pageId=0&flp=mdl:flights-flex-module,price:766.79&airProductToken=AQpxCjcI1YIBEgQxMTY4GIgYIMSNASjRgqIDMJyDogM4TkAAWAFqCjFfYmFzaWNlY29yCFNOQTJBOUJOCjYI1YIBEgM0NDkYxI0BILQtKO6GogMwg4miAzhOQABYAWoKMV9iYXNpY2Vjb3IIU05BMkE5Qk4SCggBEAEYASoCVUEYASIECAEQASgCKAMoBDAL) Fri, Jan 8 - Sat, Jan 16 · IAD · UVF · Roundtrip ## Alternative airports near Castries Prices were available within the past 7 days. Prices and availability are subject to change. [Select flight to Hewanorra Intl. UVF. Cheapest option available. Average driving time to city center is 55 minutes. Flights from $845](https://www.expedia.com/Flights-Search?leg1=from:IAD,to:UVF,departure:11/27/2026TANYT&leg2=from:UVF,to:IAD,departure:12/4/2026TANYT&trip=roundtrip&passengers=adults:1,children:0,infantinlap:N&mode=search&pageId=0&sortOrder=INCREASING&sortType=PRICE) 55 min ## Book with confidence ### Washington to Castries Flights #### The cheapest times to fly from Washington to Castries On average, Thursday can be the cheapest time to fly, according to data from the Airlines Reporting Corporation (ARC), one of the world's biggest databases for global airline sales. The data reveals that you could save up to 16% by flying on a Thursday—the cheapest day to travel on average—instead of a Sunday—the most expensive. Some of the most affordable flights from Washington to Castries are during the month of December. You can find some of the cheapest flights from Washington to Castries with Expedia's search tool and vast selection of airlines. #### The best time to book a flight from Washington to Castries Sunday is one of the best days to book for cheap flights from Washington to Castries: Tickets reserved on a Sunday cost between 6% and 13% less than those reserved on a Friday, according to ARC data. The data also suggests booking early can also lead to cheaper airfares. You could save 24% by buying your tickets for domestic flights at least a month in advance and 10% by booking international flights 2 months in advance. #### How to find cheap round-trip tickets from Washington to Castries Being flexible with your dates and using Expedia's Price Drop Protection and Price Tracking features are some of the best ways of finding a cheap ticket from Washington to Castries in 2026\. You can also book with separate airlines for your outbound and return journeys, from $244 one-way. Expedia also offers Price Drop Protection, so if the cost of your airfare goes down after booking, you'll receive a credit for the difference\*. This is available for a small fee, and is free to One Key Gold and Platinum tier members. Expedia's Price Tracking feature means you can stay on top of airfares without manually checking every day. It sends you automated price alerts for cheap Washington to Castries flights and uses historical data to indicate when the best time to book is. Download Expedia's free app to activate this handy tool in a few easy taps. You could also save big by booking one of Expedia's [vacation packages](https://www.expedia.com/package-deals). Bundling together your Washington to Castries airfare with your accommodations and car rental is often cheaper than booking everything separately. There’s also One Key, Expedia's generous rewards program. Join for free and you could earn One Key cash on most bookings to save on future adventures. *\*Terms apply.* *Disclaimer: ARC The statistics are based on average round-trip ticket prices between January and August 2023\. The percentages you see are averages.* ## Frequently Asked Questions ### How much does a flight from Washington, DC (IAD-Washington Dulles Intl.) to Castries (SLU-George F. L. Charles) cost? You can find cheap one-way flights from $244 and cheap return flights $638 Washington, DC (IAD-Washington Dulles Intl.) to Castries (SLU-George F. L. Charles) with Expedia. Return flights often range between $727 and $2845\. Flight prices vary based on the month and day of the week you want to travel, as well as the airline and how far in advance you book your ticket. Filter your search on Expedia by "Price (lowest to highest)" to see the cheapest fares first, and use the Price Tracking tool to receive alerts when Washington, DC (IAD-Washington Dulles Intl.) to Castries (SLU-George F. L. Charles) ticket fares go up or down. *\*Typical price ranges based on flights available on Expedia in the last year. Prices include multi-airline options.* ### What is the cheapest month to fly from Washington, DC (IAD-Washington Dulles Intl.) to Castries (SLU-George F. L. Charles)? The cheapest month to fly from IAD to SLU is December when demand is low. Traveling in off-peak or shoulder months is usually a good way to secure cheap tickets, just remember to avoid flying during holidays if you're able to. Use the calendar view in your search to see which months have low fares on this route. ### Which airlines fly direct from Washington, DC (IAD-Washington Dulles Intl.) to Castries (SLU-George F. L. Charles)? Enter IAD to SLU and your travel dates, then apply the 'Nonstop' filter to see only direct flights. ### What is the cheapest airline that flies from Washington, DC (IAD-Washington Dulles Intl.) to Castries (SLU-George F. L. Charles)? American Airlines is one of the cheapest airlines offering connecting flights from Washington, DC (IAD) to Castries (SLU) with return tickets starting from around $376, with a layover in Charlotte-Douglas Intl. (CLT). Use Expedia's search tool to compare the prices and schedules of airlines that fly this route to find the best option for your plans and budget. *\*Prices based on flights available on Expedia in the last year.* ### How do I find cheap flights from Washington, DC (IAD-Washington Dulles Intl.) to Castries (SLU-George F. L. Charles)? To find a cheap flight from Washington, DC (IAD-Washington Dulles Intl.) to Castries (SLU-George F. L. Charles), be flexible with your dates. Traveling outside of peak vacation months and booking a mid-week flight can help you save. Early morning and late night flights are often more affordable, too. Expedia allows you to compare flight times, airlines and routes all in one place to find low fares. You can also set up [Price Tracking](https://www.expedia.com/why/price-tracking) and receive alerts when fares go up or down. ### What is the best time to fly from Washington, DC (IAD-Washington Dulles Intl.) to Castries (SLU-George F. L. Charles)? The best time to fly is usually mid-week (Tuesday or Wednesday) and during early morning hours as flights tend to be cheaper, less crowded, and generally more on-time. Avoid major holidays and peak vacation seasons for smoother travel. Combining off-peak days and hours often gives the best combination of cost, comfort, and convenience. ### What is the earliest flight from Washington, DC (IAD-Washington Dulles Intl.) to Castries (SLU-George F. L. Charles)? The earliest flight from Washington Dulles International Airport (IAD) to Castries (George F. L. Charles) (SLU) typically departs at 5:00 AM, operated by American Airlines. This is a seasonal service active in March, allowing you to start your day early and maximize your time in the beautiful Caribbean. To compare early flights on Expedia, select the "Early Morning" and "Morning" filters in your search. ### What are the most popular departure times for flights from Washington, DC (IAD-Washington Dulles Intl.) to Castries (SLU-George F. L. Charles)? The most popular departure times for flights from Washington, DC (IAD) to Castries (SLU) are in the early morning, from 6am to 9am. About 40% of passengers prefer this time window. Many major carriers, including American Airlines and Delta Air Lines, offer flights during this period. This timing works well because it allows you to enjoy a full day in Castries upon arrival. ### How long does it take to fly from Washington, DC (IAD-Washington Dulles Intl.) to Castries (SLU-George F. L. Charles)? Flights from IAD to SLU with one stop typically take around 7 hours 50 minutes, covering approximately 1,993 miles. Keep in mind that actual flight times can vary due to wind patterns, weather, and air traffic. ### Can you fly business or first class from Washington, DC (IAD-Washington Dulles Intl.) to Castries (SLU-George F. L. Charles)? Business class seats are offered on the IAD to SLU route with Air Canada. ### How do I earn miles on a Washington, DC (IAD-Washington Dulles Intl.) to Castries (SLU-George F. L. Charles) flight with Expedia? It's easy to earn miles on a Washington, DC (IAD-Washington Dulles Intl.) to Castries (SLU-George F. L. Charles) flight when you book with Expedia. Before you confirm your booking, simply select your frequent flyer program and enter your program number. As a member of [One Key™](https://www.expedia.com/welcome-one-key), you can also earn OneKeyCash™\* on top of your airline miles when you book with Expedia. \*Excludes taxes and fees. OneKeyCash is not redeemable for cash and can only be used on Expedia and other participating brands. ### What airports do you fly into for Castries from Washington Dulles Intl. (IAD)? From Washington Dulles Intl. (IAD), you can fly into George F. L. Charles (SLU) to reach Castries. Some flights may connect through major hubs like Charlotte-Douglas Intl. (CLT), Pierre Elliott Trudeau Intl. (YUL), Macdonald-Cartier Intl. (YOW) before reaching Castries. Compare routes and airports on Expedia to find the best flight options for your travel plans. ### Is it cheaper to buy a plane ticket from Washington, DC (IAD-Washington Dulles Intl.) to Castries (SLU-George F. L. Charles) at the last minute? Typically, booking a last minute flight from Washington, DC (IAD-Washington Dulles Intl.) to Castries (SLU-George F. L. Charles) will be more expensive than booking in advance. As the departure date approaches, there are usually fewer seats available which can drive up the cost. However, if there's some wiggle room with your travel dates and times, you could bag a cheap last-minute fare. ### Is it cheaper to book a Washington, DC (IAD-Washington Dulles Intl.) to Castries (SLU-George F. L. Charles) flight and hotel package? Securing a Washington, DC (IAD-Washington Dulles Intl.) to Castries (SLU-George F. L. Charles) flight and hotel package is usually cheaper than booking separately. With Expedia, you can enjoy the ease of organizing your travels all in one place. Select from our extensive range of stays and then add flights, activities and car rentals to your booking. Bundle everything together, and you could save hundreds of dollars. ### Can I cancel or change the date of my flight from Washington, DC (IAD-Washington Dulles Intl.) to Castries (SLU-George F. L. Charles)? If you booked your Washington, DC (IAD-Washington Dulles Intl.) to Castries (SLU-George F. L. Charles) flight within the last 24 hours, you may be able to modify or cancel it without any fees. Depending on the airline and the type of ticket you have, additional charges may apply for changes beyond this timeframe. Airline policies and contact information can be found in [your itinerary](https://www.expedia.com/trips) or confirmation email. Or, head to our [Customer Service portal](https://www.expedia.com/helpcenter/) if you'd like more information. ## Travel information | Origin airport | Washington Dulles Intl. Airport | | ------------------- | ------------------------------- | | Destination airport | George F. L. Charles Airport | | Distance | 1,993 miles away | | Roundtrip price | $638 | ## Explore a world of travel with Expedia - [Flights](?equalTargetTab=tab-0) - [Flights from Springfield (SGF) to Castries (SLU)](https://www.expedia.com/lp/flights/sgf/slu/springfield-to-castries) - [Flights from Milwaukee (MKE) to Castries (SLU)](https://www.expedia.com/lp/flights/mke/slu/milwaukee-to-castries) - [Flights from Fort Myers (RSW) to Castries (SLU)](https://www.expedia.com/lp/flights/rsw/slu/fort-myers-to-castries) - [Flights from Albuquerque (ABQ) to Castries (SLU)](https://www.expedia.com/lp/flights/abq/slu/albuquerque-to-castries) - [Flights from Port of Spain (POS) to Castries (SLU)](https://www.expedia.com/lp/flights/pos/slu/port-of-spain-to-castries) - [Flights from Los Angeles (LAX) to Castries (SLU)](https://www.expedia.com/lp/flights/lax/slu/los-angeles-to-castries) - [Flights from Pointe-a-Pitre (PTP) to Castries (SLU)](https://www.expedia.com/lp/flights/ptp/slu/pointe-a-pitre-to-castries) - [Flights from Atlanta (ATL) to Castries (SLU)](https://www.expedia.com/lp/flights/atl/slu/atlanta-to-castries) - [Flights from Tortola (EIS) to Castries (SLU)](https://www.expedia.com/lp/flights/eis/slu/tortola-to-castries) - [Flights from Tampa (TPA) to Castries (SLU)](https://www.expedia.com/lp/flights/tpa/slu/tampa-to-castries) - [Flights from Newark Liberty Intl. Airport (EWR) to Castries (SLU)](https://www.expedia.com/lp/flights/ewr/slu/newark-liberty-intl-airport-to-castries) - [Flights from Spokane (GEG) to Castries (SLU)](https://www.expedia.com/lp/flights/geg/slu/spokane-to-castries) - [Flights from Greenville (GSP) to Castries (SLU)](https://www.expedia.com/lp/flights/gsp/slu/greenville-to-castries) - [Flights from Chicago (ORD) to Castries (SLU)](https://www.expedia.com/lp/flights/ord/slu/chicago-to-castries) - [Flights from Bridgetown (BGI) to Castries (SLU)](https://www.expedia.com/lp/flights/bgi/slu/bridgetown-to-castries) - [Flights from Atlantic City (ACY) to Castries (SLU)](https://www.expedia.com/lp/flights/acy/slu/atlantic-city-to-castries) - [Flights from Pittsburgh (PIT) to Castries (SLU)](https://www.expedia.com/lp/flights/pit/slu/pittsburgh-to-castries) - [Flights from Basseterre (SKB) to Castries (SLU)](https://www.expedia.com/lp/flights/skb/slu/basseterre-to-castries) - [Flights from Denver (DEN) to Castries (SLU)](https://www.expedia.com/lp/flights/den/slu/denver-to-castries) - [Flights from Washington (DCA) to Castries (SLU)](https://www.expedia.com/lp/flights/dca/slu/washington-to-castries) - [Flights from Minneapolis (MSP) to Castries (SLU)](https://www.expedia.com/lp/flights/msp/slu/minneapolis-to-castries) - [Flights from Santo Domingo (SDQ) to Castries (SLU)](https://www.expedia.com/lp/flights/sdq/slu/santo-domingo-to-castries) - [Flights from San Juan (SJU) to Castries (SLU)](https://www.expedia.com/lp/flights/sju/slu/san-juan-to-castries) - [Flights from Providenciales (PLS) to Castries (SLU)](https://www.expedia.com/lp/flights/pls/slu/providenciales-to-castries) - [Flights from Austin (AUS) to Castries (SLU)](https://www.expedia.com/lp/flights/aus/slu/austin-to-castries) - [Flights from Phoenix (PHX) to Castries (SLU)](https://www.expedia.com/lp/flights/phx/slu/phoenix-to-castries) - [Flights from Columbus (CMH) to Castries (SLU)](https://www.expedia.com/lp/flights/cmh/slu/columbus-to-castries) - [Flights from Seattle (SEA) to Castries (SLU)](https://www.expedia.com/lp/flights/sea/slu/seattle-to-castries) - [Flights from St. George's (GND) to Castries (SLU)](https://www.expedia.com/lp/flights/gnd/slu/st-georges-to-castries) - [Flights from Cedar Rapids (CID) to Castries (SLU)](https://www.expedia.com/lp/flights/cid/slu/cedar-rapids-to-castries) - [Flights from Raleigh (RDU) to Castries (SLU)](https://www.expedia.com/lp/flights/rdu/slu/raleigh-to-castries) - [Flights from Baltimore (BWI) to Castries (SLU)](https://www.expedia.com/lp/flights/bwi/slu/baltimore-to-castries) - [Flights from San Francisco (SFO) to Castries (SLU)](https://www.expedia.com/lp/flights/sfo/slu/san-francisco-to-castries) - [Flights from St. John's (ANU) to Castries (SLU)](https://www.expedia.com/lp/flights/anu/slu/st-johns-to-castries) - [Flights from Guatemala City (GUA) to Castries (SLU)](https://www.expedia.com/lp/flights/gua/slu/guatemala-city-to-castries) - [Flights from Nassau (NAS) to Castries (SLU)](https://www.expedia.com/lp/flights/nas/slu/nassau-to-castries) - [Flights from Philipsburg (SXM) to Castries (SLU)](https://www.expedia.com/lp/flights/sxm/slu/philipsburg-to-castries) - [Flights from St. Thomas (STT) to Castries (SLU)](https://www.expedia.com/lp/flights/stt/slu/st-thomas-to-castries) - [Flights from Orlando (MCO) to Castries (SLU)](https://www.expedia.com/lp/flights/mco/slu/orlando-to-castries) - [Flights from Wilmington (ILM) to Castries (SLU)](https://www.expedia.com/lp/flights/ilm/slu/wilmington-to-castries) - [Flights from San Diego (SAN) to Castries (SLU)](https://www.expedia.com/lp/flights/san/slu/san-diego-to-castries) - [Flights from Georgetown (GEO) to Castries (SLU)](https://www.expedia.com/lp/flights/geo/slu/georgetown-to-castries) - [Flights from Charleston (CRW) to Castries (SLU)](https://www.expedia.com/lp/flights/crw/slu/charleston-to-castries) - [Flights from Christiansted (STX) to Castries (SLU)](https://www.expedia.com/lp/flights/stx/slu/christiansted-to-castries) - [Flights from Detroit (DTW) to Castries (SLU)](https://www.expedia.com/lp/flights/dtw/slu/detroit-to-castries) - [Flights from Hartford (BDL) to Castries (SLU)](https://www.expedia.com/lp/flights/bdl/slu/hartford-to-castries) - [Flights from Toronto (YYZ) to Castries (SLU)](https://www.expedia.com/lp/flights/yyz/slu/toronto-to-castries) - [Flights from Paramaribo (PBM) to Castries (SLU)](https://www.expedia.com/lp/flights/pbm/slu/paramaribo-to-castries) - [Flights from Philadelphia (PHL) to Castries (SLU)](https://www.expedia.com/lp/flights/phl/slu/philadelphia-to-castries) - [Flights from Chattanooga (CHA) to Castries (SLU)](https://www.expedia.com/lp/flights/cha/slu/chattanooga-to-castries) - [Flights from Jacksonville (JAX) to Castries (SLU)](https://www.expedia.com/lp/flights/jax/slu/jacksonville-to-castries) - [Flights from Charleston (CHS) to Castries (SLU)](https://www.expedia.com/lp/flights/chs/slu/charleston-to-castries) - [Flights from Corpus Christi (CRP) to Castries (SLU)](https://www.expedia.com/lp/flights/crp/slu/corpus-christi-to-castries) - [Flights from Madison (MSN) to Castries (SLU)](https://www.expedia.com/lp/flights/msn/slu/madison-to-castries) - [Flights from Rochester (ROC) to Castries (SLU)](https://www.expedia.com/lp/flights/roc/slu/rochester-to-castries) - [Flights from San Antonio (SAT) to Castries (SLU)](https://www.expedia.com/lp/flights/sat/slu/san-antonio-to-castries) - [Flights from Boston (BOS) to Castries (SLU)](https://www.expedia.com/lp/flights/bos/slu/boston-to-castries) - [Flights from Houston (IAH) to Castries (SLU)](https://www.expedia.com/lp/flights/iah/slu/houston-to-castries) - [Flights from Argyle (SVD) to Castries (SLU)](https://www.expedia.com/lp/flights/svd/slu/argyle-to-castries) - [Flights from New York (JFK) to Castries (SLU)](https://www.expedia.com/lp/flights/jfk/slu/new-york-to-castries) - [Flights from Charlotte (CLT) to Castries (SLU)](https://www.expedia.com/lp/flights/clt/slu/charlotte-to-castries) - [Flights from South Bend (SBN) to Castries (SLU)](https://www.expedia.com/lp/flights/sbn/slu/south-bend-to-castries) - [Flights from Memphis (MEM) to Castries (SLU)](https://www.expedia.com/lp/flights/mem/slu/memphis-to-castries) - [Flights from Lafayette (LFT) to Castries (SLU)](https://www.expedia.com/lp/flights/lft/slu/lafayette-to-castries) - [Flights from Dallas (DFW) to Castries (SLU)](https://www.expedia.com/lp/flights/dfw/slu/dallas-to-castries) - [Flights from New York (LGA) to Castries (SLU)](https://www.expedia.com/lp/flights/lga/slu/new-york-to-castries) - [Flights from Nairobi (NBO) to Castries (SLU)](https://www.expedia.com/lp/flights/nbo/slu/nairobi-to-castries) - [Flights from New York (NYC) to Castries (SLU)](https://www.expedia.com/lp/flights/nyc/slu/new-york-to-castries) - [Flights from Richmond (RIC) to Castries (SLU)](https://www.expedia.com/lp/flights/ric/slu/richmond-to-castries) - [Flights from Omaha (OMA) to Castries (SLU)](https://www.expedia.com/lp/flights/oma/slu/omaha-to-castries) - [Flights from Pensacola (PNS) to Castries (SLU)](https://www.expedia.com/lp/flights/pns/slu/pensacola-to-castries) - [Flights from Punta Cana (PUJ) to Castries (SLU)](https://www.expedia.com/lp/flights/puj/slu/punta-cana-to-castries) - [Flights from Miami (MIA) to Castries (SLU)](https://www.expedia.com/lp/flights/mia/slu/miami-to-castries) - [Flights from El Paso (ELP) to Castries (SLU)](https://www.expedia.com/lp/flights/elp/slu/el-paso-to-castries) - [Flights from St. Louis (STL) to Castries (SLU)](https://www.expedia.com/lp/flights/stl/slu/st-louis-to-castries) - [Flights from Buffalo (BUF) to Castries (SLU)](https://www.expedia.com/lp/flights/buf/slu/buffalo-to-castries) - [Flights from Reno (RNO) to Castries (SLU)](https://www.expedia.com/lp/flights/rno/slu/reno-to-castries) - [Flights from Kingston (KIN) to Castries (SLU)](https://www.expedia.com/lp/flights/kin/slu/kingston-to-castries) - [Flights from Greensboro (GSO) to Castries (SLU)](https://www.expedia.com/lp/flights/gso/slu/greensboro-to-castries) - [Flights from Norfolk (ORF) to Castries (SLU)](https://www.expedia.com/lp/flights/orf/slu/norfolk-to-castries) - [Flights from Portland (PDX) to Castries (SLU)](https://www.expedia.com/lp/flights/pdx/slu/portland-to-castries) - [Flights from West Palm Beach (PBI) to Castries (SLU)](https://www.expedia.com/lp/flights/pbi/slu/west-palm-beach-to-castries) - [Flights from Cincinnati (CVG) to Castries (SLU)](https://www.expedia.com/lp/flights/cvg/slu/cincinnati-to-castries) - [Flights from Vieux Fort (UVF) to Castries (SLU)](https://www.expedia.com/lp/flights/uvf/slu/vieux-fort-to-castries) - [Flights from Kansas City (MCI) to Castries (SLU)](https://www.expedia.com/lp/flights/mci/slu/kansas-city-to-castries) - [Flights from Las Vegas (LAS) to Castries (SLU)](https://www.expedia.com/lp/flights/las/slu/las-vegas-to-castries) - [Flights from Knoxville (TYS) to Castries (SLU)](https://www.expedia.com/lp/flights/tys/slu/knoxville-to-castries) - [Flights from Montego Bay (MBJ) to Castries (SLU)](https://www.expedia.com/lp/flights/mbj/slu/montego-bay-to-castries) - [Flights from Fort Lauderdale (FLL) to Castries (SLU)](https://www.expedia.com/lp/flights/fll/slu/fort-lauderdale-to-castries) - [Flights from Des Moines (DSM) to Castries (SLU)](https://www.expedia.com/lp/flights/dsm/slu/des-moines-to-castries) - [Flights from Panama City (PTY) to Castries (SLU)](https://www.expedia.com/lp/flights/pty/slu/panama-city-to-castries) - [Flights from Fort-de-France (FDF) to Castries (SLU)](https://www.expedia.com/lp/flights/fdf/slu/fort-de-france-to-castries) - [Flights from New Orleans (MSY) to Castries (SLU)](https://www.expedia.com/lp/flights/msy/slu/new-orleans-to-castries) - [Flights from Vancouver (YVR) to Castries (SLU)](https://www.expedia.com/lp/flights/yvr/slu/vancouver-to-castries) - [Flights from Louisville (SDF) to Castries (SLU)](https://www.expedia.com/lp/flights/sdf/slu/louisville-to-castries) - [Flights from Shreveport (SHV) to Castries (SLU)](https://www.expedia.com/lp/flights/shv/slu/shreveport-to-castries) - [Flights from Marigot (DOM) to Castries (SLU)](https://www.expedia.com/lp/flights/dom/slu/marigot-to-castries) - [Flights from Nashville (BNA) to Castries (SLU)](https://www.expedia.com/lp/flights/bna/slu/nashville-to-castries) - [Flights from Port-au-Prince (PAP) to Castries (SLU)](https://www.expedia.com/lp/flights/pap/slu/port-au-prince-to-castries) - [Flights from Providence (PVD) to Castries (SLU)](https://www.expedia.com/lp/flights/pvd/slu/providence-to-castries) \*Available to One Key members. ## Other language versions ```yaml hreflang: x-default: https://www.expedia.com/lp/flights/iad/slu/washington-to-castries ar: https://www.expedia.sa/lp/flights/iad/slu/washington-to-castries fr-CA: https://www.expedia.ca/fr/lp/vols/iad/slu/washington-a-castries en-US: https://www.expedia.com/lp/flights/iad/slu/washington-to-castries es: https://www.expedia.com/es/lp/vuelos/iad/slu/washington-a-castries en-CA: https://www.expedia.ca/lp/flights/iad/slu/washington-to-castries ```