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IAD - STI

$244 Find cheap flights from Washington Dulles Airport to Santiago de los Caballeros

This is the cheapest one-way flight price found by a KAYAK user in the last 72 hours by searching for a flight from Dulles Intl to Santiago de los Caballeros departing on 5/13. Fares are subject to change and may not be available on all flights or dates of travel. Click the price to replicate the search for this deal.
1 adult
0 bags
sex 6/7
sex 6/14

Search hundreds of travel sites at once for deals on flights to Santiago de los Caballeros

 
These are the airlines KAYAK users have selected most often from within our search results in flight searches from Washington, D.C. to Santiago de los Caballeros, as well as popular online travel agencies
These are the airlines KAYAK users have selected most often from within our search results in flight searches from Washington, D.C. to Santiago de los Caballeros, as well as popular online travel agencies
In the last 7 days travelers have searched 43,968,530 times on KAYAK, and here is why:

Save 21% or moreCompare multiple travel sites with one search.

Track pricesNot ready to book? Create a price alert for when prices drop.

Filter your dealsChoose cabin class, free Wi-Fi and more.

Bundle and saveSave money when you bundle your flight + hotel.

Cheap flight deals from Dulles Intl to Santiago de los Caballeros (IAD-STI)

Here are some of the best deals found on KAYAK recently from the most popular airlines for round-trip flights from Dulles Intl to Santiago de los Caballeros that are departing in the next months. While these flights were available on KAYAK in the last 72 hours, prices and availability are subject to change and deals may expire.
Discover the best prices and deals for you by selecting your travel dates.
Choose your dates
2:39 am - 2:58 pmIAD-STI
12h 19m1 stop
3:56 pm - 12:33 amSTI-IAD
8h 37m1 stop
$359Copa Airlines
Find Deal
seg, set 9 - ter, set 17
12:30 pm - 11:02 pmIAD-STI
10h 32m1 stop
6:45 pm - 12:10 pmSTI-IAD
17h 25m1 stop
$435Delta
Find Deal
ter, set 10 - ter, set 17
8:35 am - 3:12 pmIAD-STI
6h 37m1 stop
2:07 pm - 10:29 pmSTI-IAD
8h 22m1 stop
$436United Airlines
Find Deal
sex, mai 31 - ter, jun 4
12:35 pm - 12:56 amIAD-STI
12h 21m1 stop
6:15 am - 5:20 pmSTI-IAD
11h 05m1 stop
$437Delta
Find Deal
qua, mai 29 - qua, jun 5
8:12 pm - 1:19 pmIAD-STI
17h 07m2 stops
1:53 pm - 8:58 amSTI-IAD
19h 05m2 stops
$439American Airlines
Find Deal
qua, mai 29 - qua, jun 5
5:02 am - 1:19 pmIAD-STI
8h 17m2 stops
1:53 pm - 8:58 amSTI-IAD
19h 05m2 stops
$458American Airlines
Find Deal
qua, mai 29 - qua, jun 5
5:02 am - 1:19 pmIAD-STI
8h 17m2 stops
1:53 pm - 8:58 amSTI-IAD
19h 05m2 stops
$468American Airlines
Find Deal
sex, mai 31 - sáb, jun 8
6:04 am - 12:57 pmIAD-STI
6h 53m1 stop
2:07 pm - 10:00 pmSTI-IAD
7h 53m1 stop
$564United Airlines
Find Deal
sáb, set 7 - dom, set 15
2:35 am - 2:55 pmIAD-STI
12h 20m1 stop
3:50 pm - 6:25 amSTI-IAD
14h 35m2 stops
$1,022
Find Deal
sex, mai 24 - ter, mai 28
2:35 am - 2:55 pmIAD-STI
12h 20m1 stop
3:50 pm - 6:25 amSTI-IAD
14h 35m2 stops
$1,023
Find Deal
sex, mai 24 - ter, mai 28

Flights from Dulles Intl to Santiago de los Caballeros - Travel Insights & Trends

Get data-powered insights and trends into flights from Dulles Intl to Santiago de los Caballeros to help you find the cheapest flights, the best time to fly and much more.

What is the cheapest month to fly from Washington, D.C. Dulles Intl Airport to Santiago de los Caballeros?

To calculate monthly average prices, KAYAK takes all prices for each month over the last year for flights from Washington, D.C. Dulles Intl Airport to Santiago de los Caballeros, removes the top 0.1% to account for outliers, and then takes the median of all values for each month.
The cheapest month for flights from Washington, D.C. Dulles Intl Airport to Santiago de los Caballeros is February, where tickets cost $386 on average. On the other hand, the most expensive months are December and July, where the average cost of tickets is $791 and $631 respectively.

How far in advance should I book a flight from Washington, D.C. Dulles Intl Airport to Santiago de los Caballeros?

To calculate daily average prices, KAYAK takes all prices for each day before departure over the last year for flights from Washington, D.C. Dulles Intl Airport to Santiago de los Caballeros, removes the top 0.1% to account for outliers, and then takes the average of all the values for each month.
To get a below average price on the flight from Washington, D.C. Dulles Intl Airport to Santiago de los Caballeros, you should book around 4 days before departure. For the absolute cheapest price, our data suggests you should book 26 days before departure.

Which airlines provide the cheapest flights from Washington Dulles Airport to Santiago de los Caballeros?

The cheapest price for the route for each airline clicked by KAYAK users in the last 72 hours.
In the last 72 hours, the cheapest one-way ticket from Washington Dulles Airport to Santiago de los Caballeros found on KAYAK was with Delta for $244. Copa Airlines proposed a round-trip connection from $359 and Delta from $435.

Good to know

Low season

March

High season

December

Cheapest flight

$244
Best time to beat the crowds with an average 7% drop in price.
Most popular time to fly with an average 19% increase in price.
Flight from Washington Dulles Airport to Santiago de los Caballeros

When to book flights from Dulles Intl to Santiago de los Caballeros

Are your dates flexible? Find out the best times to travel from Dulles Intl to Santiago de los Caballeros based on our flight data from the last year. Discover the cheapest month and even day to fly.
Estimated round-trip price
KAYAK looks at all historical flight data for each date to provide a predicted price for one-way trips or round-trips with a duration up to 40 days. While we try to provide actual minimum prices for each date, some prices are predictions and actual prices may differ.

FAQs for booking Washington Dulles Airport to Santiago de los Caballeros flights

  • What is the cheapest flight from Washington, D.C. Dulles Intl Airport to Santiago de los Caballeros?

    In the last 3 days, the lowest price for a flight from Washington, D.C. Dulles Intl Airport to Santiago de los Caballeros was $244 for a one-way ticket and $359 for a round-trip.

  • Do I need a passport to fly between Washington Dulles Airport and Santiago de los Caballeros?

    Yes, you'll most likely have to show a valid passport before boarding the plane in Washington Dulles Airport and on arrival in Santiago de los Caballeros.

  • Which airports will I be using when flying from Washington Dulles Airport to Santiago de los Caballeros?

    When flying out of Washington Dulles Airport you will be using Washington, D.C. Dulles Intl. You will be landing at Santiago de los Caballeros, also known as Santiago de los Caballeros.

  • Which aircraft models fly most regularly from Washington Dulles Airport to Santiago de los Caballeros?

    We unfortunately don’t have that data for this specific route.

  • Which airline alliances offer flights from Washington Dulles Airport to Santiago de los Caballeros?

    SkyTeam, oneworld, and Star Alliance are the airline alliances operating flights between Washington Dulles Airport and Santiago de los Caballeros, with Star Alliance being the most commonly used for this route.

  • Which is the best airline for flights from Washington, D.C. to Santiago de los Caballeros, Delta or United Airlines?

    The two airlines most popular with KAYAK users for flights from Washington, D.C. to Santiago de los Caballeros are Delta and United Airlines. With an average price for the route of $661 and an overall rating of 8.0, Delta is the most popular choice. United Airlines is also a great choice for the route, with an average price of $632 and an overall rating of 7.4.

  • How does KAYAK find such low prices on flights from Washington Dulles Airport to Santiago de los Caballeros?

    KAYAK is a travel search engine. That means we look across the web to find the best prices we can find for our users. With over 2 billion flight queries processed yearly, we are able to display a variety of prices and options on flights from Washington Dulles Airport to Santiago de los Caballeros.

  • How does KAYAK's flight Price Forecast tool help me choose the right time to buy my flight ticket from Washington Dulles Airport to Santiago de los Caballeros?

    KAYAK’s flight Price Forecast tool uses historical data to determine whether the price for a flight to Santiago de los Caballeros from Washington Dulles Airport is likely to change within 7 days, so travelers know whether to wait or book now.

  • What is the Hacker Fare option on flights from Washington Dulles Airport to Santiago de los Caballeros?

    Hacker Fares allow you to combine one-way tickets in order to save you money over a traditional round-trip ticket. You could then fly to Santiago de los Caballeros with an airline and back to Washington Dulles Airport with another airline. Booking your flights between Washington Dulles Airport and STI can sometimes prove cheaper using this method.

  • What is KAYAK's "flexible dates" feature and why should I care when looking for a flight from Washington Dulles Airport to Santiago de los Caballeros?

    Sometimes travel dates aren't set in stone. If your preferred travel dates have some wiggle room, flexible dates will show you all the options when flying to Santiago de los Caballeros from Washington Dulles Airport up to 3 days before/after your preferred dates. You can then pick the flights that suit you best.

See more FAQs

Top airlines flying from Dulles Intl to Santiago de los Caballeros

 
See real verified KAYAK customer reviews for airlines flying from Washington, D.C. to Santiago de los Caballeros. Airline scores are aggregated from all reviews left by passengers on KAYAK after flying with an airline. KAYAK doesn’t show reviews that are older than 5 years. Learn how KAYAK collects reviews.
Need help choosing which airline to fly with from Dulles Intl to Santiago de los Caballeros? KAYAK airline reviews give an overall score for each airline based on loads of factors, including comfort, boarding, in-flight entertainment and more, to make your decision easier. See airline scores according to verified KAYAK customer reviews.
8.0
DeltaOverall score based on 10789 reviews
7.4Food
8.0Entertainment
8.6Crew
8.2Boarding
7.9Comfort
Airline reviews

West Jet has a horrible boarding process and the seats have no cushion.

4.0 OkayDouglas, May 2024MSP - YEG
Read more about Delta reviews

West Jet has a horrible boarding process and the seats have no cushion.

Everything went smoothly. I didn’t like that when I booked in the main cabin my wife and I weren’t seated together. One would think when booking on an option that allows picking your seat. They would put you and your travel partner together. Had to call to get it sorted. They did fix.

The gate area was incredibly short staffed, with one representative manning 4-5 flights, which caused a 3 hr delay in boarding even though the plane was all ready to leave. Other flights also were delayed because of this. The flight crew was awesome and I feel bad for the only gate worker on call, but Delta needs to hire more employees.

Very frustrated with boarding gate crew. She announced the plane was small and they would be limiting us to one item to carry on. Not a problem for me as I understand the tiny planes have limited space!! Not the case here! It was a rather large plane and had plenty of room for bags! So because I don’t want to be one of “those people” who ignores the request to check a carry on I did so asking if I would be able to pick it up at the bottom of the ramp on arrival in Knoxville to which she responded “yes”! Then I watched as every other passenger held onto their 2 items and boarded!! Then when we arrived in Knoxville our 2 carry ons had been put with all the other luggage and we had to go to baggage pick up and wait for all the big checked bags to come off the carousel! So she lied!! Frustrating. Next time I won’t be so nice!

It was a good experience except when boarding a female flight attendant did not go out of her way to assist my teenage daughters in finding space for their carry-ons after their compartments were full.

On time departure, smooth trip, flight attendant told through passengers the gate we would arrive at and the gate our outbound flight was departing from. Early arrival

Checking in at the airport the agent only booked the first keg of my trip and had my checked luggage going to the airport with a layover! Never was issued a boarding pass for the second leg or received sticker fir my checked bag. All was well in the end! Delta agents helped to resolve the situation!!!

Delayed due to an ill passenger after loading. Not preventable on Delta's part. Was in first class. The seats are becoming worn and detaching from their velcro attachments. Only got snacks on flight. The attendant was not the friendliest.

I would fly again the whole experience was great. The only feed back I can give that they don't do that American Airlines does is the crew there is more humorous with boarding and thank their passengers. It makes it more fun to fly with them. I would however fly Delta again.

Big plane, long flight, absolutely no leg room and basically non existent air! I am 5”4’ and always travel Main Cabin, I was miserable on this plane and could barely move when we arrived in Cabo due to the cramped leg area!

Should have video screens Plane audio was poor and without wired connection hard to understand crew. Should serve more than just cups of water and pretzels on six hour flight. Did not see crew rest of flight. Fix charging sockets to retain charging blocks.

Food was terrible Not many options Stewards dont care Delay

The ride was good but no food ot entertainment hence, it was just over an hour flight.

they made me check my carryon. There was space in the overhead bins.

The plane was delayed 2 hours. The wifi did not work. The seat in first class was not comfortable because the bottom felt like it lost all of its padding. And I did not like when the flight attendant made me wait at my seat to use the bathroom and didn't tell me why. If there were too many people using the 1st Class bathroom, she should have told me to go in the back, coach bathrooms. I guess I have to feel fortunate that they found 2 local pilots to still fly the plane tonight after the original pilots ended up at an airport 60 miles away due to high winds.

The crew were really great, but the 4 hour delay in small chunks was the worst.

Every experience was good except for the lack of comfort in those economy seats. I never had knee pain until that flight. Those seats are uncomfortable.

I bought internet for the flight. Don’t waste your money. I wasn’t able to download a 1 Mb file from Google Docs during a 3-4 hr period. You can only use WhatsApp and email if you are willing to wait.

Just a crappy airline. The same every time. You feel you are a cow on a farm. You are being being whipped and pulled.

Wasn’t very crowded. Seamless processes. No issues traveling with two little kids.

Book cheap flights from Washington, D.C. to Santiago de los Caballeros

Recent one-way flight deals

 
Only flying one-way? Below are some of the best one-way flight deals from Washington, D.C. to Santiago de los Caballeros found on KAYAK in the last 72 hours.
5/13seg
1 stopDelta
7h 57mIAD-STI
$244
5/25sáb
1 stopDelta
7h 57mIAD-STI
$262
5/25sáb
2 stopsAmerican Airlines
10h 37mIAD-STI
$281
7/24qua
1 stopCopa Airlines
22h 35mIAD-STI
$295
5/13seg
2 stopsAmerican Airlines
20h 58mIAD-STI
$312
7/26sex
1 stopUnited Airlines
6h 57mIAD-STI
$338
5/24sex
1 stopCopa Airlines
12h 20mIAD-STI
$453
6/16dom
1 stopUnited Airlines
6h 43mIAD-STI
$473
5/25sáb
3 stops
21h 54mIAD-STI
$646
5/23qui
3 stops
23h 16mIAD-STI
$718

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Last minute flights from Dulles Intl to Santiago de los Caballeros

Last minute flight, train and bus deals

 
These last-minute flight deals are the cheapest flights found on KAYAK in the last 72 hours for flights from Washington, D.C. to Santiago de los Caballeros that are departing in the next 10 days.
5/10sex
multi-stopCopa Airlines
12h 20mIAD-STI
5/14ter
multi-stopCopa Airlines
12h 30mSTI-IAD
$503
5/11sáb
multi-stopDelta
12h 21mIAD-STI
5/15qua
multi-stopDelta
11h 06mSTI-IAD
$580
5/11sáb
multi-stopAmerican Airlines
19h 58mIAD-STI
5/14ter
multi-stopAmerican Airlines
9h 37mSTI-IAD
$582
5/10sex
multi-stop
23h 24mIAD-STI
5/13seg
multi-stop
28h 21mSTI-IAD
$640
5/11sáb
multi-stop
33h 25mIAD-STI
5/13seg
multi-stop
28h 21mSTI-IAD
$647
5/11sáb
multi-stopAmerican Airlines
17h 07mIAD-STI
5/15qua
multi-stopAmerican Airlines
19h 29mSTI-IAD
$718
5/11sáb
multi-stopAmerican Airlines
10h 37mIAD-STI
5/14ter
multi-stopAmerican Airlines
9h 37mSTI-IAD
$4,351

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Washington Dulles Airport - Santiago de los Caballeros Flights

Departure:

Washington Dulles Airport (undefined)United States

Destination:

Santiago de los Caballeros (STI)Dominican Republic

Return flight deals:

Santiago de los Caballeros - Washington Dulles Airport

Cabin classes: