$169 Cheap Flights from Washington (IAD) to Santo Domingo (SDQ)

View $169 flight on Tue, Jul 15, 2025Opens in a new window

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Find available prices by choosing your travel dates.

Cheap Flights from Washington to Santo Domingo (IAD-SDQ)

Prices were available within the past 7 days and start at $169 for one-way flights and $276 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

Frontier Airlines
Tue, Jul 8 - Wed, Jul 9
IAD
Washington
SDQ
Santo Domingo
$276 Roundtrip, found 4 hours ago
$276
Roundtrip
found 4 hours ago
Select Frontier Airlines flight, departing Tue, Jul 8 from Washington to Santo Domingo, returning Wed, Jul 9, priced at $276 found 4 hours ago
Frontier Airlines
Tue, Jul 1 - Wed, Jul 2
IAD
Washington
SDQ
Santo Domingo
$276 Roundtrip, found 19 hours ago
$276
Roundtrip
found 19 hours ago
Select Frontier Airlines flight, departing Tue, Jul 1 from Washington to Santo Domingo, returning Wed, Jul 2, priced at $276 found 19 hours ago
Frontier Airlines
Sun, Jun 15 - Mon, Jun 16
IAD
Washington
SDQ
Santo Domingo
$289 Roundtrip, found 10 hours ago
$289
Roundtrip
found 10 hours ago
Select Frontier Airlines flight, departing Sun, Jun 15 from Washington to Santo Domingo, returning Mon, Jun 16, priced at $289 found 10 hours ago
Frontier Airlines
Sun, Jul 6 - Mon, Jul 7
IAD
Washington
SDQ
Santo Domingo
$296 Roundtrip, found 6 days ago
$296
Roundtrip
found 6 days ago
Select Frontier Airlines flight, departing Sun, Jul 6 from Washington to Santo Domingo, returning Mon, Jul 7, priced at $296 found 6 days ago
Frontier Airlines
Sun, Jul 6 - Mon, Jul 7
IAD
Washington
SDQ
Santo Domingo
$298 Roundtrip, found 6 days ago
$298
Roundtrip
found 6 days ago
Select Frontier Airlines flight, departing Sun, Jul 6 from Washington to Santo Domingo, returning Mon, Jul 7, priced at $298 found 6 days ago
Frontier Airlines
Tue, Jul 8 - Thu, Jul 10
IAD
Washington
SDQ
Santo Domingo
$311 Roundtrip, found 4 hours ago
$311
Roundtrip
found 4 hours ago
Select Frontier Airlines flight, departing Tue, Jul 8 from Washington to Santo Domingo, returning Thu, Jul 10, priced at $311 found 4 hours ago
Copa
Sat, Jun 7 - Tue, Jun 17
IAD
Washington
SDQ
Santo Domingo
$407 Roundtrip, just found
$407
Roundtrip
just found
Select Copa flight, departing Sat, Jun 7 from Washington to Santo Domingo, returning Tue, Jun 17, priced at $407 just found
United
Tue, Nov 25 - Mon, Dec 8
IAD
Washington
SDQ
Santo Domingo
$455 Roundtrip, found 1 day ago
$455
Roundtrip
found 1 day ago
Select United flight, departing Tue, Nov 25 from Washington to Santo Domingo, returning Mon, Dec 8, priced at $455 found 1 day ago
Delta
Tue, Oct 21 - Thu, Oct 30
IAD
Washington
SDQ
Santo Domingo
$465 Roundtrip, found 12 hours ago
$465
Roundtrip
found 12 hours ago
Select Delta flight, departing Tue, Oct 21 from Washington to Santo Domingo, returning Thu, Oct 30, priced at $465 found 12 hours ago
American Airlines
Tue, Jul 15 - Tue, Jul 22
IAD
Washington
SDQ
Santo Domingo
$469 Roundtrip, just found
$469
Roundtrip
just found
Select American Airlines flight, departing Tue, Jul 15 from Washington to Santo Domingo, returning Tue, Jul 22, priced at $469 just found
Flights from Washington (IAD) to Santo Domingo (SDQ)
Origin airport
Washington Dulles Intl.
Destination airport
Las Americas Intl.
Airlines serving
Aeromexico, American Airlines, Copa, Delta, Frontier Airlines, United
Roundtrip price
$275
Distance
1492 mi

Washington to Santo Domingo Flights

The cheapest times to fly from Washington to Santo Domingo

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

The best time to book a flight from Washington to Santo Domingo

Sunday is one of the best days to book for cheap flights from Washington to Santo Domingo: 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 Santo Domingo

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 Santo Domingo in 2025. You can also book with separate airlines for your outbound and return journeys, from $169 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 Santo Domingo 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 Santo Domingo 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 Las Americas Intl. Airport (SDQ) cost?
Discover the latest flight deals from IAD to SDQ by entering your preferred travel dates and searching on Expedia. Easily compare prices by departure date if you have flexibility with your schedule and use handy filters to explore prices for your preferred journey. As a member of One Key™, our free loyalty program, you can use Price Tracking to watch fares and receive notifications if prices go up or down.
What is the cheapest month to fly from IAD to SDQ?
The cheapest flights from IAD to SDQ are usually during off-peak season, when demand is lower. To save money, avoid flying during public holidays, school breaks and major local events.
What is the cheapest airline that flies from IAD to SDQ?
Use the filter tool on Expedia to compare airlines and find the cheapest carrier that’ll take you from IAD to SDQ. Sort your results by “Price (lowest to highest)” to snap up a great deal.
How many flights per day from Washington Dulles Intl. Airport (IAD) to Las Americas Intl. Airport (SDQ)?
Nonstop flights from Washington Dulles Intl. Airport (IAD) to Las Americas Intl. Airport (SDQ) aren’t available daily, so you’ll need to take a flight with a layover. Explore your options with our filter tool. Enter your travel dates and select either “1 Stop” or “2+ Stops.”
What day of the week has the most flights from IAD to SDQ?
Friday is typically the busiest day for flights, while Tuesday is often the quietest.* Just remember that flight schedules can vary based on a range of factors, such as the airline and season.*Busiest/quietest day to travel is based on Expedia flight demand through January to December 2024.
What airline has the least delays from IAD to SDQ?
United Airlines has the best track record for on-time direct flights from Washington Dulles Intl. Airport (IAD) to Las Americas Intl. Airport (SDQ), with an on-time score of 85%. Use the Expedia App to look up your journey status before you go and get immediate updates about any changes.
What is the best time to fly from Washington Dulles Intl. Airport (IAD) to Las Americas Intl. Airport (SDQ)?
To arrive at Las Americas Intl. Airport (SDQ) without delays, choose a flight that leaves Washington Dulles Intl. Airport (IAD) before 3 PM. The likelihood of cancellations is 22% higher, on average, for departures after this time.**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 Las Americas Intl. Airport (SDQ) last-minute?
Last-minute fares from IAD to SDQ are generally more expensive. To secure the best prices, start searching for flights as soon as possible. That being said, if you’re flexible with your travel dates, you may land a cheap fare right before your journey.
Is it cheaper to book an IAD to SDQ flight and hotel package?
Compared with arranging hotels and flights separately, booking an IAD to SDQ flight and hotel package with Expedia could lead to significant savings. Better yet, having everything in one place takes the hassle out of travel planning. Just pick your flights and select from our extensive range of stays, then tailor your trip with extras like tours, activities and car rentals.
Can I cancel or change the date of my flight from Washington Dulles Intl. Airport (IAD) to Las Americas Intl. Airport (SDQ)?
If you reserved your IAD to SDQ flight in the last 24 hours, you may be able to modify or cancel it without fees. Depending on the airline and the type of ticket you have, additional charges may apply for changes beyond that time. Airline policies and contact information can be found in your itinerary or confirmation email. Or, go to our Customer Service portal for further details.

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*Available to One Key members.