Cheap Flights from Washington (IAD) to San Juan (UAQ)

Popular airlines from Washington Dulles Intl. Airport (IAD) to San Juan (UAQ-Domingo Faustino Sarmiento)

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Cheap Flights from Washington to San Juan (IAD-UAQ)

Prices were available within the past 7 days and start at for one-way flights and $1,415 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

avianca
Fri, Oct 31 - Tue, Nov 4
IAD
Washington
UAQ
San Juan
$1,415 Roundtrip, found 4 days ago
$1,415
Roundtrip
found 4 days ago
Select avianca flight, departing Fri, Oct 31 from Washington to San Juan, returning Tue, Nov 4, priced at $1,415 found 4 days ago
avianca
Fri, Oct 31 - Tue, Nov 4
IAD
Washington
UAQ
San Juan
$1,501 Roundtrip, found 4 days ago
$1,501
Roundtrip
found 4 days ago
Select avianca flight, departing Fri, Oct 31 from Washington to San Juan, returning Tue, Nov 4, priced at $1,501 found 4 days ago

Frequently asked questions

How much does a flight from Washington Dulles Intl. Airport (IAD) to Domingo Faustino Sarmiento Airport (UAQ) cost?
Snag a cheap one-way flight or cheap return flight from $1,415 from Washington Dulles Intl. Airport (IAD) to Domingo Faustino Sarmiento Airport (UAQ) with Expedia. Enter your travel dates and sort by "Price (lowest to highest)" to find our cheapest flight deals on this route.
What is the cheapest month to fly from Washington Dulles Intl. Airport (IAD) to Domingo Faustino Sarmiento Airport (UAQ)?
The cheapest month to fly from IAD to UAQ is October, when demand is low. Off-peak season is typically when you'll find cheap fares for travel between these airports.
What is the cheapest airline that flies from Washington Dulles Intl. Airport (IAD) to Domingo Faustino Sarmiento Airport (UAQ)?
Expedia's filter tool lets you easily compare travel time, airlines and fares all in one place. Select your preferences, then sort by "Price (lowest to highest)" to see which carrier offers the cheapest IAD to UAQ flight.
How many flights per day from Washington Dulles Intl. Airport (IAD) to Domingo Faustino Sarmiento Airport (UAQ)?
Direct flights from Washington Dulles Intl. Airport (IAD) to Domingo Faustino Sarmiento Airport (UAQ) aren't available daily, so you'll need to take a flight with a layover. Explore your options with Expedia's filters. Enter your travel details and click on either "1 Stop" or "2+ Stops."
What day of the week has the most flights from IAD to UAQ?
Friday is typically the busiest day for flights, while Tuesday is often the quietest.* Keep in mind that flight schedules can change based on a range of factors, including the time of year and airline.*Busiest/quietest day to travel is based on Expedia flight demand through January to December 2024.
What is the best time to fly from Washington Dulles Intl. Airport (IAD) to Domingo Faustino Sarmiento Airport (UAQ)?
Choose a flight from Washington Dulles Intl. Airport (IAD) to Domingo Faustino Sarmiento Airport (UAQ) that leaves before 3 PM to reduce the likelihood of delays. Departures after this hour are on average 22% more likely to be canceled.**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.
Is it cheaper to buy a plane ticket from Washington Dulles Intl. Airport (IAD) to Domingo Faustino Sarmiento Airport (UAQ) last-minute?
Waiting until right before your break to book a flight from IAD to UAQ often results in higher prices. While you may come across some last-minute offers, there's no guarantee. Keep your travel plans flexible for a better chance of scoring a bargain.
Is it cheaper to book an IAD to UAQ flight and hotel package?
Securing an IAD to UAQ flight and hotel package is usually cheaper than booking separately. With Expedia, you can enjoy the convenience of organizing your travels in one place. Choose from our wide range of stays and then add flights, activities and car rentals 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 Domingo Faustino Sarmiento Airport (UAQ)?
It's generally possible to cancel or reschedule your IAD to UAQ flight. However, if the booking was made more than 24 hours ago, additional fees may apply. Check your airline's policies in your itinerary to see what changes are allowed and whether any costs are involved. You'll also find more information on our Customer Service portal.

Travel information

Origin airport
Washington Dulles Intl.
Destination airport
Domingo Faustino Sarmiento
Roundtrip price
$1,415
Distance
4906 mi

Book with confidence

Washington to San Juan Flights

The cheapest times to fly from Washington to San Juan

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 Juan are during the month of October. You can find some of the cheapest flights from Washington to San Juan with Expedia's search tool and vast selection of airlines.

 

The best time to book a flight from Washington to San Juan

Sunday is one of the best days to book for cheap flights from Washington to San Juan: 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 Juan

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 Juan 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 Juan 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 Juan 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.

 

Washington to San Juan Flights

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*Available to One Key members.