$255 Cheap Flights from Washington (IAD) to Santiago (STI)

View $255 flight on Sun, Feb 1, 2026Opens in a new window

Popular airlines from Washington Dulles Intl. Airport (IAD) to Cibao Intl. Airport (STI)

Cheap Flights from Washington to Santiago (IAD-STI)

Prices were available within the past 7 days and start at $255 for one-way flights and $468 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

Delta
Mon, Apr 27 - Thu, May 7
IAD
Washington
STI
Santiago de los Caballeros
$468 Roundtrip, found 11 hours ago
$468
Roundtrip
found 11 hours ago
Select Delta flight, departing Mon, Apr 27 from Washington to Santiago de los Caballeros, returning Thu, May 7, priced at $468 found 11 hours ago
American Airlines
Tue, Dec 2 - Fri, Dec 12
IAD
Washington
STI
Santiago de los Caballeros
$479 Roundtrip, found 4 hours ago
$479
Roundtrip
found 4 hours ago
Select American Airlines flight, departing Tue, Dec 2 from Washington to Santiago de los Caballeros, returning Fri, Dec 12, priced at $479 found 4 hours ago
American Airlines
Tue, Dec 2 - Fri, Dec 12
IAD
Washington
STI
Santiago de los Caballeros
$486 Roundtrip, found 4 hours ago
$486
Roundtrip
found 4 hours ago
Select American Airlines flight, departing Tue, Dec 2 from Washington to Santiago de los Caballeros, returning Fri, Dec 12, priced at $486 found 4 hours ago
Delta
Sun, Jan 11 - Sat, Feb 7
IAD
Washington
STI
Santiago de los Caballeros
$488 Roundtrip, found 1 day ago
$488
Roundtrip
found 1 day ago
Select Delta flight, departing Sun, Jan 11 from Washington to Santiago de los Caballeros, returning Sat, Feb 7, priced at $488 found 1 day ago
American Airlines
Tue, Dec 2 - Fri, Dec 12
IAD
Washington
STI
Santiago de los Caballeros
$488 Roundtrip, found 4 hours ago
$488
Roundtrip
found 4 hours ago
Select American Airlines flight, departing Tue, Dec 2 from Washington to Santiago de los Caballeros, returning Fri, Dec 12, priced at $488 found 4 hours ago
United
Thu, Mar 5 - Tue, Mar 10
IAD
Washington
STI
Santiago de los Caballeros
$491 Roundtrip, found 2 days ago
$491
Roundtrip
found 2 days ago
Select United flight, departing Thu, Mar 5 from Washington to Santiago de los Caballeros, returning Tue, Mar 10, priced at $491 found 2 days ago
American Airlines
Thu, Dec 4 - Mon, Dec 8
IAD
Washington
STI
Santiago de los Caballeros
$492 Roundtrip, just found
$492
Roundtrip
just found
Select American Airlines flight, departing Thu, Dec 4 from Washington to Santiago de los Caballeros, returning Mon, Dec 8, priced at $492 just found
American Airlines
Tue, Dec 2 - Fri, Dec 12
IAD
Washington
STI
Santiago de los Caballeros
$496 Roundtrip, found 4 hours ago
$496
Roundtrip
found 4 hours ago
Select American Airlines flight, departing Tue, Dec 2 from Washington to Santiago de los Caballeros, returning Fri, Dec 12, priced at $496 found 4 hours ago
American Airlines
Wed, Dec 3 - Sun, Dec 7
IAD
Washington
STI
Santiago de los Caballeros
$497 Roundtrip, found 3 days ago
$497
Roundtrip
found 3 days ago
Select American Airlines flight, departing Wed, Dec 3 from Washington to Santiago de los Caballeros, returning Sun, Dec 7, priced at $497 found 3 days ago
Copa
Sat, Jan 24 - Mon, Feb 9
IAD
Washington
STI
Santiago de los Caballeros
$498 Roundtrip, found 2 days ago
$498
Roundtrip
found 2 days ago
Select Copa flight, departing Sat, Jan 24 from Washington to Santiago de los Caballeros, returning Mon, Feb 9, priced at $498 found 2 days ago

Find the cheapest month to fly from Washington (IAD) to Santiago de los Caballeros (STI)

July is typically the cheapest month to fly

From $342 - $760 per traveler.

Alternative airports near Santiago de los Caballeros

Prices were available within the past 7 days. Prices and availability are subject to change.

Select flight to Gregorio Luperon Intl. POP. Cheapest option available. Average driving time to city center is 59 minutes. Flights from $499
POP
Gregorio Luperon Intl.
Cheapest
Average driving time to city center59 min
Flights from $499

Frequently asked questions

How much does a flight from Washington Dulles Intl. Airport (IAD) to Cibao Intl. Airport (STI) cost?
Grab a cheap one-way flight from $255 or cheap return flight from $468 from Washington Dulles Intl. Airport (IAD) to Cibao Intl. Airport (STI) 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 Cibao Intl. Airport (STI)?
Planning your trip for April is a great way to save, as it's the cheapest month for flights between IAD and STI. You'll typically find the lowest fares during off-peak months.
What is the cheapest airline that flies from Washington Dulles Intl. Airport (IAD) to Cibao Intl. Airport (STI)?
Expedia's filter tool lets you easily compare different airlines, departure times and fares all in one place. Choose your preferences, then sort by "Price (lowest to highest)" to find out which carrier offers the cheapest IAD to STI flight.
How many flights per day from Washington Dulles Intl. Airport (IAD) to Cibao Intl. Airport (STI)?
Direct flights from Washington Dulles Intl. Airport (IAD) to Cibao Intl. Airport (STI) 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 dates and pick either "1 Stop" or "2+ Stops."
What day of the week has the most flights from IAD to STI?
You'll generally find Tuesday the quietest day for flights, while Fridays tend to be the busiest.* However this can vary from season to season and during public holidays or peak travel times.*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 Cibao Intl. Airport (STI)?
To avoid possible delays on the Washington Dulles Intl. Airport (IAD) to Cibao Intl. Airport (STI) route, fly before 3 PM. Flights after this time have a 22% higher chance of cancellation.**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 Cibao Intl. Airport (STI) last-minute?
Booking your flight from IAD to STI just before your journey is generally more expensive. But if there's some wiggle room with your departure times and dates, you could score a cheap last-minute fare.
Is it cheaper to book an IAD to STI flight and hotel package?
Compared with arranging flights and hotels separately, booking an IAD to STI flight and hotel package with Expedia could result in significant savings. What's more, having everything in one place will take the hassle out of travel planning. Just pick your flights and select from our wide range of hotels, then customize your trip with other add-ons like activities, tours and car rentals.
Can I cancel or change the date of my flight from Washington Dulles Intl. Airport (IAD) to Cibao Intl. Airport (STI)?
In most instances, you can reschedule or cancel your IAD to STI flight. However, additional charges may apply, especially if your booking was made over 24 hours ago. Check your itinerary for the airline's fees and rules on flight changes, or if you want more information, go to our Customer Service portal.

Travel information

Origin airport
Washington Dulles Intl.
Destination airport
Cibao Intl.
Airlines serving
American Airlines, Copa, Delta, United
Roundtrip price
$467
Distance
1411 mi

Book with confidence

Washington to Santiago Flights

The cheapest times to fly from Washington to Santiago

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

 

The best time to book a flight from Washington to Santiago

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

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 Santiago in 2025. You can also book with separate airlines for your outbound and return journeys, from $255 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 Santiago 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 Santiago 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 Santiago Flights

Explore a world of travel with Expedia

*Available to One Key members.