Title: Cheap flights to San Salvador from Washington (IAD to SAL) - Expedia.com ![](https://images.trvl-media.com/place/6053734/f5e3f172-c98a-4758-a260-f2851075ca5b.jpg?impolicy=fcrop&w=1200&h=500&q=medium) ![](https://images.trvl-media.com/place/6053734/f5e3f172-c98a-4758-a260-f2851075ca5b.jpg?impolicy=fcrop&w=1200&h=500&q=medium) # Cheap Flights from Washington (IAD) to San Salvador (SAL) - [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 El Salvador Intl. Airport (SAL) - ![](https://forever.travel-assets.com/flex/flexmanager/images/2024/09/23/landing_airline_sq_logo_AV.svg) Avianca [](https://www.expedia.com/Flights-Search?leg1=from:IAD,to:SAL,departure:3/14/2026TANYT&leg2=from:SAL,to:IAD,departure:3/21/2026TANYT&trip=roundtrip&passengers=adults:1,children:0,infantinlap:N&mode=search&pageId=0&filters=[{"preferredAirlineFilterValue":{"carrierCode":"AV"}}]) - ![](https://forever.travel-assets.com/flex/flexmanager/images/2024/09/23/landing_airline_sq_logo_CM.svg) Copa [](https://www.expedia.com/Flights-Search?leg1=from:IAD,to:SAL,departure:3/14/2026TANYT&leg2=from:SAL,to:IAD,departure:3/21/2026TANYT&trip=roundtrip&passengers=adults:1,children:0,infantinlap:N&mode=search&pageId=0&filters=[{"preferredAirlineFilterValue":{"carrierCode":"CM"}}]) - ![](https://forever.travel-assets.com/flex/flexmanager/images/2024/09/23/landing_airline_sq_logo_N3.svg) Omskavia [](https://www.expedia.com/Flights-Search?leg1=from:IAD,to:SAL,departure:3/14/2026TANYT&leg2=from:SAL,to:IAD,departure:3/21/2026TANYT&trip=roundtrip&passengers=adults:1,children:0,infantinlap:N&mode=search&pageId=0&filters=[{"preferredAirlineFilterValue":{"carrierCode":"N3"}}]) - ![](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:SAL,departure:3/14/2026TANYT&leg2=from:SAL,to:IAD,departure:3/21/2026TANYT&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_AC.svg) Air Canada [](https://www.expedia.com/Flights-Search?leg1=from:IAD,to:SAL,departure:3/14/2026TANYT&leg2=from:SAL,to:IAD,departure:3/21/2026TANYT&trip=roundtrip&passengers=adults:1,children:0,infantinlap:N&mode=search&pageId=0&filters=[{"preferredAirlineFilterValue":{"carrierCode":"AC"}}]) - ![](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:SAL,departure:3/14/2026TANYT&leg2=from:SAL,to:IAD,departure:3/21/2026TANYT&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:SAL,departure:3/14/2026TANYT&leg2=from:SAL,to:IAD,departure:3/21/2026TANYT&trip=roundtrip&passengers=adults:1,children:0,infantinlap:N&mode=search&pageId=0&filters=[{"preferredAirlineFilterValue":{"carrierCode":"AA"}}]) ![](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_) ## Find the cheapest month to fly from Washington (IAD) to San Salvador (SAL) ### February is typically the cheapest month to fly From $172 - $304 per traveler. ## Frequently asked questions ### How much does a flight from Washington, DC (IAD-Washington Dulles Intl.) to San Salvador (SAL-El Salvador Intl.) cost? ### What is the cheapest month to fly from Washington, DC (IAD-Washington Dulles Intl.) to San Salvador (SAL-El Salvador Intl.)? ### Which airlines fly direct from Washington, DC (IAD-Washington Dulles Intl.) to San Salvador (SAL-El Salvador Intl.)? > - Avianca operates around 27 direct flights from IAD to SAL every week > - United operates around 7 direct flights from IAD to SAL every week > - Frontier Airlines operates around 7 direct flights from IAD to SAL every week ### What is the cheapest airline that flies from Washington, DC (IAD-Washington Dulles Intl.) to San Salvador (SAL-El Salvador Intl.)? ### How do I find cheap flights from Washington, DC (IAD-Washington Dulles Intl.) to San Salvador (SAL-El Salvador Intl.)? ### What is the best airline to fly with from Washington, DC (IAD-Washington Dulles Intl.) to San Salvador (SAL-El Salvador Intl.)? ### What is the best time to fly from Washington, DC (IAD-Washington Dulles Intl.) to San Salvador (SAL-El Salvador Intl.)? ### How many flights per day from Washington, DC (IAD-Washington Dulles Intl.) to San Salvador (SAL-El Salvador Intl.)? ### What is the earliest flight from Washington, DC (IAD-Washington Dulles Intl.) to San Salvador (SAL-El Salvador Intl.)? ### What are the most popular departure times for flights from Washington, DC (IAD-Washington Dulles Intl.) to San Salvador (SAL-El Salvador Intl.)? ### How long does it take to fly from Washington, DC (IAD-Washington Dulles Intl.) to San Salvador (SAL-El Salvador Intl.)? ### Can you fly business or first class from Washington, DC (IAD-Washington Dulles Intl.) to San Salvador (SAL-El Salvador Intl.)? > - Copa > - Avianca > - Air Canada > - United Airlines > - Aeromexico > - Delta Air Lines > - American Airlines ### How much is a business class flight from Washington, DC (IAD-Washington Dulles Intl.) to San Salvador (SAL-El Salvador Intl.)? ### How do I earn miles on a Washington, DC (IAD-Washington Dulles Intl.) to San Salvador (SAL-El Salvador Intl.) flight with Expedia? ### What airports do you fly into for San Salvador from Washington Dulles Intl. (IAD)? ### Is it cheaper to buy a plane ticket from Washington, DC (IAD-Washington Dulles Intl.) to San Salvador (SAL-El Salvador Intl.) at the last minute? ### Is it cheaper to book a Washington, DC (IAD-Washington Dulles Intl.) to San Salvador (SAL-El Salvador Intl.) flight and hotel package? ### Can I cancel or change the date of my flight from Washington, DC (IAD-Washington Dulles Intl.) to San Salvador (SAL-El Salvador Intl.)? ## Travel information | Origin airport | Washington Dulles Intl. | | ------------------- | --------------------------------------------------------------------------------------------------------------- | | Destination airport | El Salvador Intl. | | Airlines serving | Aeromexico, Air Canada, American Airlines, Copa, Delta, Frontier Airlines, United, Volaris El Salvador, avianca | | Distance | 1899 mi | | Average flight time | 3 hours 36 mins | ## Book with confidence # Washington to San Salvador Flights The cheapest times to fly from Washington to San Salvador 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 San Salvador are during the month of . You can find some of the cheapest flights from Washington to San Salvador with Expedia's search tool and vast selection of airlines. The best time to book a flight from Washington to San Salvador Sunday is one of the best days to book for cheap flights from Washington to San Salvador: 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 San Salvador 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 San Salvador in 2026\. You can also book with separate airlines for your outbound and return journeys, from 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 San Salvador 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 San Salvador 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\. 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