Cheap Flights from Washington (IAD) to San Salvador (SAL)

Popular airlines from Washington Dulles Intl. Airport (IAD) to El Salvador Intl. Airport (SAL)

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Find the cheapest month to fly from Washington (IAD) to San Salvador (SAL)

September is typically the cheapest month to fly

From $170 - $274 per traveler.

Graph displaying average flight prices per month

Flights from Washington (IAD) to San Salvador (SAL)
Origin airport
Washington Dulles Intl.
Destination airport
El Salvador Intl.
Airlines serving
Aeromexico, Air Canada, American Airlines, Copa, Delta, Frontier Airlines, United, avianca
Distance
1899 mi
Average flight time
2 hours 43 mins

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 2025. 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. 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. The percentages you see are averages.

 

Frequently asked questions

How much does a flight from Washington Dulles Intl. Airport (IAD) to El Salvador Intl. Airport (SAL) cost?
Cheap round-trip fares from Washington Dulles Intl. Airport (IAD) to El Salvador Intl. Airport (SAL) start at $265. This information is based on the cheapest price found on Expedia for this return journey departing within the next three months. This airfare is for a United flight leaving IAD on July 9 2025 and touching down at SAL. The price was last updated on June 30 2025 and has not changed since.
What is the cheapest month to fly from IAD to SAL?
The cheapest flights from IAD to SAL are usually during off-peak season, when demand is lower. To save money, avoid flying during public holidays, school breaks and major local events.
Which airlines fly direct from Washington Dulles Intl. Airport (IAD) to El Salvador Intl. Airport (SAL)?
You can fly directly from Washington Dulles Intl. Airport (IAD) to El Salvador Intl. Airport (SAL) on an AVIANCA flight.
What is the cheapest airline that flies from IAD to SAL?
Book a flight from IAD to SAL with United. This airline currently has the lowest one-way fare on this route, starting at $110. This fare is based on the lowest price found on Expedia departing within the next three months. The flight takes off from IAD on August 18 2025. Prices were last updated on June 30 2025 and have not changed since.
How many flights per day from Washington Dulles Intl. Airport (IAD) to El Salvador Intl. Airport (SAL)?
With, on average, 5 direct flights departing from Washington Dulles Intl. Airport (IAD) to El Salvador Intl. Airport (SAL) every day, you'll be up in the air in no time.
What are the most popular departure times for flights from Washington Dulles Intl. Airport (IAD) to El Salvador Intl. Airport (SAL)?
The 1 AM departures from IAD to SAL are the busiest. Greater demand means you'll likely pay more for these departures. If you're looking to save, book during off-peak hours.
What day of the week has the most flights from IAD to SAL?
Fly on a Thursday if you're after the best choice of flights from Washington Dulles Intl. Airport (IAD) to El Salvador Intl. Airport (SAL).
What is the earliest flight from Washington Dulles Intl. Airport (IAD) to El Salvador Intl. Airport (SAL)?
Washington Dulles Intl. Airport (IAD)'s first flight to El Salvador Intl. Airport (SAL) leaves at approximately 1:24AM UTC-5. With a travel duration of 4h 38m, you'll land at around 5:02AM UTC-6.
How long does it take to fly from Washington Dulles Intl. Airport (IAD) to El Salvador Intl. Airport (SAL)?
The average flight duration from IAD to SAL is 4 hours and 36 minutes, covering a distance of 1,900 mi.
What airline has the least delays from IAD to SAL?
With 81% of journeys usually landing on schedule, AVIANCA has the best on-time performance for nonstop flights from Washington Dulles Intl. Airport (IAD) to El Salvador Intl. Airport (SAL). To monitor your flight status and receive notifications about any changes, simply head to the Expedia App.
What is the best time to fly from Washington Dulles Intl. Airport (IAD) to El Salvador Intl. Airport (SAL)?
To reach El Salvador Intl. Airport (SAL) on time, select a flight that takes off from Washington Dulles Intl. Airport (IAD) before 3 PM. The likelihood of cancellations is 22% higher, on average, for departures after this hour.**Most reliable time of the day and month to travel recommendation is based on January through August 2024 flight status data sourced from OAG's global flight data platform.
What airports do you fly into for San Salvador from Washington Dulles Intl. Airport (IAD)?
If you're taking a direct flight from Washington Dulles Intl. Airport (IAD) to San Salvador, El Salvador Intl. Airport (SAL) is the only airport you can land at.
Is it cheaper to buy a plane ticket from Washington Dulles Intl. Airport (IAD) to El Salvador Intl. Airport (SAL) last-minute?
Booking your plane ticket from IAD to SAL right before your trip is generally more expensive. However, if there's some wiggle room with your departure dates and times, you could snag a cheap last-minute fare.
Is it cheaper to book an IAD to SAL flight and hotel package?
Securing an IAD to SAL flight and hotel package is generally cheaper than booking separately. With Expedia, you can enjoy the convenience of organizing your travels in one place. Select from our impressive range of stays and then add flights, car rentals and activities to your booking. Bundle it all together, and you could save hundreds of dollars.
Can I cancel or change the date of my flight from Washington Dulles Intl. Airport (IAD) to El Salvador Intl. Airport (SAL)?
If you reserved your IAD to SAL flight within the last 24 hours, you may be able to modify or cancel it at no cost. Depending on the airline and the ticket type you purchased, additional charges may apply for changes beyond that time. Airline policies and contact information can be found in your itinerary or confirmation email. Or, visit our Customer Service portal for more details.

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