Title: $160 Cheap flights from Washington to Nantucket (IAD to ACK) - Expedia.com ![](https://images.trvl-media.com/place/285/e7fbaece-83d0-4f61-81f2-8a09a92b48d7.jpg?impolicy=fcrop&w=1200&h=500&q=medium) ![](https://images.trvl-media.com/place/285/e7fbaece-83d0-4f61-81f2-8a09a92b48d7.jpg?impolicy=fcrop&w=1200&h=500&q=medium) # $160 Cheap Flights from Washington (IAD) to Nantucket (ACK) [View $160 flight on Tue, Jun 2, 2026](https://expedia.com/Flights-Search?trip=oneway&leg1=from:IAD,to:ACK,departure:6/2/2026TANYT&passengers=children:0,adults:1,seniors:0,infantinlap:N&mode=search&options=sortby:price&paandi=true&flp=mdl:flights-flex-module,price:159.20&airProductToken=AQqnAQo2CMSYARIEMzgyNhiIGCDjtAEouM-OAzCT0I4DOEVAAFgBaglNQUlOQkFTSUNyCFVBVU9BMEJRCjYIxJgBEgQyNTg5GOO0ASDLASio0Y4DMJXSjgM4RUABWAFqCU1BSU5CQVNJQ3IIVUFVT0EwQlEKNQjEmAESBDU3MzcYywEgwFAonNOOAzDo044DOEVAAVgBaglNQUlOQkFTSUNyCFVBVU9BMEJREgoIARABGAEqAkRMGAEiBAgBEAEoAigDKAQwAQ) - [Roundtrip](?flightType=roundtrip) - [One-way](?flightType=oneway) - [Multi-city](?flightType=multicity) ### Travelers Adults ChildrenAges 2 to 17 InfantsYounger than 2 EconomyPremium economyBusiness classFirst class Leaving from Going to Departing Returning Add a place to stay Add a car Direct flights only ## Popular airlines from Washington Dulles Intl. Airport (IAD) to Nantucket, MA (ACK-Nantucket Memorial) - ![](https://forever.travel-assets.com/flex/flexmanager/images/2024/09/23/landing_airline_sq_logo_UA.svg) United [](https://www.expedia.com/Flights-Search?leg1=from:IAD,to:ACK,departure:3/15/2026TANYT&leg2=from:ACK,to:IAD,departure:3/22/2026TANYT&trip=roundtrip&passengers=adults:1,children:0,infantinlap:N&mode=search&pageId=0&filters=[{"preferredAirlineFilterValue":{"carrierCode":"UA"}}]) - ![](https://forever.travel-assets.com/flex/flexmanager/images/2024/09/23/landing_airline_sq_logo_DL.svg) Delta [](https://www.expedia.com/Flights-Search?leg1=from:IAD,to:ACK,departure:3/15/2026TANYT&leg2=from:ACK,to:IAD,departure:3/22/2026TANYT&trip=roundtrip&passengers=adults:1,children:0,infantinlap:N&mode=search&pageId=0&filters=[{"preferredAirlineFilterValue":{"carrierCode":"DL"}}]) - ![](https://forever.travel-assets.com/flex/flexmanager/images/2024/09/23/landing_airline_sq_logo_AA.svg) American Airlines [](https://www.expedia.com/Flights-Search?leg1=from:IAD,to:ACK,departure:3/15/2026TANYT&leg2=from:ACK,to:IAD,departure:3/22/2026TANYT&trip=roundtrip&passengers=adults:1,children:0,infantinlap:N&mode=search&pageId=0&filters=[{"preferredAirlineFilterValue":{"carrierCode":"AA"}}]) - ![](https://a.travel-assets.com/travel-assets-manager/pictogram-bex/light__notification.svg) ### Be in the know Get alerts if flight prices drop or rise\* - ![](https://a.travel-assets.com/travel-assets-manager/pictogram-bex/light__deals.svg) ### Book smarter Save up to 30% on select hotels after you book a flight\* - ![](https://a.travel-assets.com/travel-assets-manager/pictogram-bex/light__trophy.svg) ### 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 Nantucket (IAD-ACK) Prices were available within the past 7 days and start at $160 for one-way flights and $192 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply. All deals One way Roundtrip ![Delta](//images.trvl-media.com/media/content/expus/graphics/static_content/fusion/v0.1b/images/airlines/DL.gif) Tue, Aug 18 - Thu, Sep 3 IAD Washington ACK Nantucket $192 Roundtrip found 22 hours ago [](https://expedia.com/Flights-Search?trip=roundtrip&leg1=from:IAD,to:ACK,departure:8/18/2026TANYT&leg2=from:ACK,to:IAD,departure:9/3/2026TANYT&passengers=children:0,adults:1,seniors:0,infantinlap:N&mode=search&options=sortby:price&paandi=true&flp=mdl:flights-flex-module,price:191.10&airProductToken=AQpoCiEIxJgBEgQzODQ5GIgYIOO0ASjws5UDMMu0lQM4RUAAWAEKIQjEmAESBDI2MDIY47QBIMsBKLi1lQMwpbaVAzhFQAFYAQogCMSYARIENTczNxjLASDAUCjdtpUDMK23lQM4RUABWAEKRAogCMSYARIENTgwNBjAUCCpUSjC6ZYDMJXqlgM4RUAAWAEKIAjEmAESBDUwOTUYqVEgiBgolOuWAzD065YDOEVAAVgBEgoIARABGAEqAkRMGAEiBAgBEAEoBDAB) ![Delta](//images.trvl-media.com/media/content/expus/graphics/static_content/fusion/v0.1b/images/airlines/DL.gif) Tue, Aug 18 - Wed, Sep 2 IAD Washington ACK Nantucket $222 Roundtrip found 22 hours ago [](https://expedia.com/Flights-Search?trip=roundtrip&leg1=from:IAD,to:ACK,departure:8/18/2026TANYT&leg2=from:ACK,to:IAD,departure:9/2/2026TANYT&passengers=children:0,adults:1,seniors:0,infantinlap:N&mode=search&options=sortby:price&paandi=true&flp=mdl:flights-flex-module,price:221.10&airProductToken=AQpoCiEIxJgBEgQzODQ5GIgYIOO0ASjws5UDMMu0lQM4RUAAWAEKIQjEmAESBDI2MDIY47QBIMsBKLi1lQMwpbaVAzhFQAFYAQogCMSYARIENTczNxjLASDAUCjdtpUDMK23lQM4RUABWAEKRAogCMSYARIENTgwNBjAUCCpUSii3pYDMPXelgM4RUAAWAEKIAjEmAESBDUwOTUYqVEgiBgo9N-WAzDU4JYDOEVAAVgBEgoIARABGAEqAkRMGAEiBAgBEAEoBDAB) ![Delta](//images.trvl-media.com/media/content/expus/graphics/static_content/fusion/v0.1b/images/airlines/DL.gif) Sat, Aug 8 - Tue, Aug 25 IAD Washington ACK Nantucket $225 Roundtrip found 22 hours ago [](https://expedia.com/Flights-Search?trip=roundtrip&leg1=from:IAD,to:ACK,departure:8/8/2026TANYT&leg2=from:ACK,to:IAD,departure:8/25/2026TANYT&passengers=children:0,adults:1,seniors:0,infantinlap:N&mode=search&options=sortby:price&paandi=true&flp=mdl:flights-flex-module,price:224.80&airProductToken=AQpECiAIxJgBEgQ1MDc2GIgYIKlRKN_HlAMwxsiUAzhFQABYAQogCMSYARIENTgwNBipUSDAUCiqz5QDMPfPlAM4RUABWAEKRAogCMSYARIENTgwNBjAUCCpUSiihJYDMPWElgM4RUAAWAEKIAjEmAESBDUwOTUYqVEgiBgo9IWWAzDUhpYDOEVAAVgBEgoIARABGAEqAkRMGAEiBAgBEAEoBDAB) ![Delta](//images.trvl-media.com/media/content/expus/graphics/static_content/fusion/v0.1b/images/airlines/DL.gif) Tue, Aug 25 - Wed, Sep 9 IAD Washington ACK Nantucket $238 Roundtrip found 22 hours ago [](https://expedia.com/Flights-Search?trip=roundtrip&leg1=from:IAD,to:ACK,departure:8/25/2026TANYT&leg2=from:ACK,to:IAD,departure:9/9/2026TANYT&passengers=children:0,adults:1,seniors:0,infantinlap:N&mode=search&options=sortby:price&paandi=true&flp=mdl:flights-flex-module,price:237.10&airProductToken=AQpoCiEIxJgBEgQzODQ5GIgYIOO0ASjQgpYDMKuDlgM4RUAAWAEKIQjEmAESBDI2MDIY47QBIMsBKJiElgMwhYWWAzhFQAFYAQogCMSYARIENTczNxjLASDAUCi9hZYDMI2GlgM4RUABWAEKRAogCMSYARIENTgwNBjAUCCpUSiCrZcDMNWtlwM4RUAAWAEKIAjEmAESBDUwOTUYqVEgiBgo1K6XAzC0r5cDOEVAAVgBEgoIARABGAEqAkRMGAEiBAgBEAEoBDAB) ![Delta](//images.trvl-media.com/media/content/expus/graphics/static_content/fusion/v0.1b/images/airlines/DL.gif) Tue, Jun 2 - Wed, Jun 17 IAD Washington ACK Nantucket $239 Roundtrip found 4 hours ago [](https://expedia.com/Flights-Search?trip=roundtrip&leg1=from:IAD,to:ACK,departure:6/2/2026TANYT&leg2=from:ACK,to:IAD,departure:6/17/2026TANYT&passengers=children:0,adults:1,seniors:0,infantinlap:N&mode=search&options=sortby:price&paandi=true&flp=mdl:flights-flex-module,price:238.79&airProductToken=AQpECiAIxJgBEgQ1NzkyGIgYIKlRKOXVjgMwvdaOAzhFQABYAQogCMSYARIENTgwNBipUSDAUCj73Y4DMMvejgM4RUABWAEKRAogCMSYARIENTgwNBjAUCCpUSiC_I8DMNX8jwM4RUAAWAEKIAjEmAESBDUwOTUYqVEgiBgo1P2PAzC0_o8DOEVAAVgBEgoIARABGAEqAkRMGAEiBAgBEAEoBDAB) ![Delta](//images.trvl-media.com/media/content/expus/graphics/static_content/fusion/v0.1b/images/airlines/DL.gif) Sun, May 31 - Wed, Jun 3 IAD Washington ACK Nantucket $240 Roundtrip found 4 hours ago [](https://expedia.com/Flights-Search?trip=roundtrip&leg1=from:IAD,to:ACK,departure:5/31/2026TANYT&leg2=from:ACK,to:IAD,departure:6/3/2026TANYT&passengers=children:0,adults:1,seniors:0,infantinlap:N&mode=search&options=sortby:price&paandi=true&flp=mdl:flights-flex-module,price:239.79&airProductToken=AQpECiAIxJgBEgQ1NzkyGIgYIKlRKKW_jgMw_b-OAzhFQABYAQogCMSYARIENTgwNBipUSDAUCi7x44DMIvIjgM4RUABWAEKRAogCMSYARIENTgwNBjAUCCpUSj03o4DMMDfjgM4RUAAWAEKIAjEmAESBDU3OTIYqVEgiBgo99-OAzDd4I4DOEVAAVgBEgoIARABGAEqAkRMGAEiBAgBEAEoBDAB) ![Delta](//images.trvl-media.com/media/content/expus/graphics/static_content/fusion/v0.1b/images/airlines/DL.gif) Tue, Jun 9 - Wed, Jun 17 IAD Washington ACK Nantucket $253 Roundtrip found 11 hours ago [](https://expedia.com/Flights-Search?trip=roundtrip&leg1=from:IAD,to:ACK,departure:6/9/2026TANYT&leg2=from:ACK,to:IAD,departure:6/17/2026TANYT&passengers=children:0,adults:1,seniors:0,infantinlap:N&mode=search&options=sortby:price&paandi=true&flp=mdl:flights-flex-module,price:252.09&airProductToken=AQpoCiEIxJgBEgQzODI2GIgYIOO0ASiYno8DMPaejwM4RUAAWAEKIQjEmAESBDI1ODkY47QBIMsBKIigjwMw86CPAzhFQAFYAQogCMSYARIENTg1NhjLASDAUCikoo8DMPOijwM4RUABWAEKRAogCMSYARIENTgwNBjAUCCpUSiC_I8DMNX8jwM4RUAAWAEKIAjEmAESBDUwOTUYqVEgiBgo1P2PAzC0_o8DOEVAAVgBEgoIARABGAEqAkRMGAEiBAgBEAEoBDAB) ![Delta](//images.trvl-media.com/media/content/expus/graphics/static_content/fusion/v0.1b/images/airlines/DL.gif) Sat, Aug 22 - Wed, Sep 9 IAD Washington ACK Nantucket $254 Roundtrip found 22 hours ago [](https://expedia.com/Flights-Search?trip=roundtrip&leg1=from:IAD,to:ACK,departure:8/22/2026TANYT&leg2=from:ACK,to:IAD,departure:9/9/2026TANYT&passengers=children:0,adults:1,seniors:0,infantinlap:N&mode=search&options=sortby:price&paandi=true&flp=mdl:flights-flex-module,price:253.80&airProductToken=AQpECiAIxJgBEgQ1MDc2GIgYIKlRKJ_llQMwhuaVAzhFQABYAQogCMSYARIENTgwNBipUSDAUCjq7JUDMLftlQM4RUABWAEKRAogCMSYARIENTgwNBjAUCCpUSiCrZcDMNWtlwM4RUAAWAEKIAjEmAESBDUwOTUYqVEgiBgo1K6XAzC0r5cDOEVAAVgBEgoIARABGAEqAkRMGAEiBAgBEAEoBDAB) ![United](//images.trvl-media.com/media/content/expus/graphics/static_content/fusion/v0.1b/images/airlines/UA.gif) Tue, Jul 28 - Wed, Jul 29 IAD Washington ACK Nantucket $378 Roundtrip found 5 days ago [](https://expedia.com/Flights-Search?trip=roundtrip&leg1=from:IAD,to:ACK,departure:7/28/2026TANYT&leg2=from:ACK,to:IAD,departure:7/29/2026TANYT&passengers=children:0,adults:1,seniors:0,infantinlap:N&mode=search&options=sortby:price&paandi=true&flp=mdl:flights-flex-module,price:377.80&airProductToken=AQpyCjcI1YIBEgQyMTQ3GIgYIMSNASjZxZMDMKjGkwM4TkAAWAFqCjFfYmFzaWNlY29yCFNBQTBPRkJOCjcI1YIBEgQ0NDk3GMSNASDAUCjhxpMDMLfHkwM4TkAAWAFqCjFfYmFzaWNlY29yCFNBQTBPRkJOCnIKNwjVggESBDQ0OTQYwFAgxI0BKKDVkwMwitaTAzhOQABYAWoKMV9iYXNpY2Vjb3IIV0FBME9GQk4KNwjVggESBDI2NzcYxI0BIIgYKIHXkwMw3NeTAzhOQABYAWoKMV9iYXNpY2Vjb3IIV0FBME9GQk4SCggBEAEYASoCVUEYASIECAEQASgCKAMoBDAL) ![American Airlines](//images.trvl-media.com/media/content/expus/graphics/static_content/fusion/v0.1b/images/airlines/AA.gif) Sat, Jun 13 - Fri, Jun 19 IAD Washington ACK Nantucket $392 Roundtrip found 11 hours ago [](https://expedia.com/Flights-Search?trip=roundtrip&leg1=from:IAD,to:ACK,departure:6/13/2026TANYT&leg2=from:ACK,to:IAD,departure:6/19/2026TANYT&passengers=children:0,adults:1,seniors:0,infantinlap:N&mode=search&options=sortby:price&paandi=true&flp=mdl:flights-flex-module,price:391.10&airProductToken=AQpoCiEIwYIBEgQxMjE2GIgYIOKaASiuy48DMIXMjwM4TkAAWAEKIQjBggESBDExNTAY4poBIMsBKOHMjwMw082PAzhOQAFYAQogCMGCARIENDU0NhjLASDAUCijzo8DMPrOjwM4TkABWAEKRgohCMGCARIEMzg2MxjAUCDimgEotpKQAzDKk5ADOFFAAFgBCiEIwYIBEgQyOTUzGOKaASCIGCiwlJADMImVkAM4UUABWAESCggBEAEYASoCQUEYASIECAEQASgEMAE) ![](https://forever.travel-assets.com/flex/flexmanager/images/2026/02/06/expedia-sale-2026-desktop-us-ca.jpg?impolicy=fcrop&w=1400&h=600&q=mediumHigh) ## The Annual Vacation Sale Members save up to 40% on hotels and homes. Plan this year’s big trip and save. [Book now](https://expedia.com/deals?rfrr=FTG_SPRING_PROMO_) ## Frequently asked questions ### How much does a flight from Washington Dulles Intl. Airport (IAD) to Nantucket Memorial Airport (ACK) cost? ### What is the cheapest month to fly from Washington Dulles Intl. Airport (IAD) to Nantucket Memorial Airport (ACK)? ### What is the cheapest airline that flies from Washington Dulles Intl. Airport (IAD) to Nantucket Memorial Airport (ACK)? ### How many flights per day from Washington Dulles Intl. Airport (IAD) to Nantucket Memorial Airport (ACK)? ### What day of the week has the most flights from IAD to ACK? ### What is the best time to fly from Washington Dulles Intl. Airport (IAD) to Nantucket Memorial Airport (ACK)? ### Is it cheaper to buy a plane ticket from Washington Dulles Intl. Airport (IAD) to Nantucket Memorial Airport (ACK) last-minute? ### Is it cheaper to book an IAD to ACK flight and hotel package? ### Can I cancel or change the date of my flight from Washington Dulles Intl. Airport (IAD) to Nantucket Memorial Airport (ACK)? ## Travel information | Origin airport | Washington Dulles Intl. | | ------------------- | -------------------------------- | | Destination airport | Nantucket Memorial | | Airlines serving | American Airlines, Delta, United | | Roundtrip price | $191 | | Distance | 421 mi | ## Book with confidence # Washington to Nantucket Flights The cheapest times to fly from Washington to Nantucket 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 Nantucket are during the month of August. You can find some of the cheapest flights from Washington to Nantucket with Expedia's search tool and vast selection of airlines. The best time to book a flight from Washington to Nantucket Sunday is one of the best days to book for cheap flights from Washington to Nantucket: 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 Nantucket 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 Nantucket in 2026\. You can also book with separate airlines for your outbound and return journeys, from $160 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 Nantucket 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 Nantucket 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. \*Flight schedules are subject to change. ## Explore a world of travel with Expedia - Lodging - Flights - Packages - Cars - [Nantucket Hotels ](https://www.expedia.com/Nantucket-Hotels.d285.Travel-Guide-Hotels) - [Hotels near Naushop ](https://www.expedia.com/Naushop-Nantucket-Hotels.0-n553248635976471878-0.Travel-Guide-Filter-Hotels) - [Hotels near Nobadeer Beach ](https://www.expedia.com/Nobadeer-Beach-Hotels.0-l6287514-0.Travel-Guide-Filter-Hotels) - [Hotels near Madequecham ](https://www.expedia.com/Madequecham-Nantucket-Hotels.0-n553248635976472647-0.Travel-Guide-Filter-Hotels) - [Hotels near Surfside Beach ](https://www.expedia.com/Surfside-Beach-Hotels.0-l6287523-0.Travel-Guide-Filter-Hotels) - [Dallas to Nantucket ](https://www.expedia.com/lp/flights/178253/285/dallas-to-nantucket) - [Raleigh to Nantucket ](https://www.expedia.com/lp/flights/178300/285/raleigh-to-nantucket) - [Nobadeer Beach ](https://www.expedia.com/Nobadeer-Beach-Nantucket.d6287514.Vacation-Attraction) - [Surfside Beach ](https://www.expedia.com/Surfside-Beach-Nantucket.d6287523.Vacation-Attraction) - [Car rentals near Surfside ](https://www.expedia.com/Car-Rentals-In-Surfside.d553248635975749234.Car-Rental-Guide) - [Car rentals near Monomoy ](https://www.expedia.com/Car-Rentals-In-Monomoy.d553248635976384808.Car-Rental-Guide) - [Enterprise Rental Cars in Monomoy ](https://www.expedia.com/Enterprise-Car-Rentals-In-Monomoy.d553248635976384808-c15.Car-Rental-Guide-Suppliers) \*Available to One Key members.