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IAD - STI

Find cheap flights from Washington Dulles Airport to Santiago de los Caballeros from $171

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 5/27. 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
Thu 5/23
Thu 5/30

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 44,632,927 times on KAYAK, and here is why:

Save 22% 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
12:35 pm - 12:56 amIAD-STI
12h 21m1 stop
6:15 am - 5:21 pmSTI-IAD
11h 06m1 stop
$437Delta
Find Deal
Wed, May 15 - Wed, May 22
4:59 pm - 12:56 amIAD-STI
7h 57m1 stop
6:15 am - 5:21 pmSTI-IAD
11h 06m1 stop
$456Delta
Find Deal
Sat, May 11 - Wed, May 15
8:12 pm - 4:10 pmIAD-STI
19h 58m2 stops
5:10 pm - 2:57 pmSTI-IAD
21h 47m2 stops
$458American Airlines
Find Deal
Sat, May 11 - Tue, May 14
2:35 am - 2:55 pmIAD-STI
12h 20m1 stop
3:50 pm - 12:31 amSTI-IAD
8h 41m1 stop
$459Copa Airlines
Find Deal
Fri, May 3 - Tue, May 7
2:14 pm - 12:25 pmIAD-STI
22h 11m2 stops
1:25 pm - 8:54 amSTI-IAD
19h 29m2 stops
$473American Airlines
Find Deal
Wed, May 22 - Wed, May 29
1:00 pm - 1:59 amIAD-STI
12h 59m3 stops
2:59 am - 11:35 amSTI-IAD
32h 36m3 stops
Wed, May 22 - Tue, May 28
6:00 am - 12:57 pmIAD-STI
6h 57m1 stop
4:18 pm - 11:18 pmSTI-IAD
7h 00m1 stop
$546United Airlines
Find Deal
Mon, May 6 - Mon, May 13
2:36 am - 3:00 pmIAD-STI
12h 24m1 stop
3:55 pm - 4:20 amSTI-IAD
12h 25m1 stop
$606Copa Airlines
Find Deal
Mon, Jul 8 - Tue, Jul 23
6:14 am - 12:57 pmIAD-STI
6h 43m1 stop
2:07 pm - 10:29 pmSTI-IAD
8h 22m1 stop
$615United Airlines
Find Deal
Thu, Jun 13 - Mon, Jun 17
4:34 pm - 2:55 pmIAD-STI
22h 21m1 stop
4:00 pm - 1:45 pmSTI-IAD
21h 45m2 stops
Fri, May 24 - Mon, May 27

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 September, where tickets cost $441 on average. On the other hand, the most expensive months are December and August, where the average cost of tickets is $771 and $643 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 41 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 Copa Airlines for $171. Delta proposed a round-trip connection from $437 and American Airlines from $458.

Good to know

Low season

May

High season

February

Cheapest flight

$171
Best time to beat the crowds but there is an average 27% increase in price.
Most popular time to fly and prices are also 26% lower on average.
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 $171 for a one-way ticket and $437 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?

    Star Alliance, oneworld, and SkyTeam 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 $591 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 11028 reviews
7.5food
8.6crew
8.0entertainment
7.9comfort
8.2boarding
Airline reviews

On my way home I had a layover. The flight from ATL to CLT was amended 5x while I was waiting. I could have driven home sooner. Overall from Dallas, Tx to Charlotte, NC I started my trip at 4:30pm, I didn’t get home until past midnight. I know things happen, but 5x to make me run back and forth in an airport from different terminals is excessive. I also upgraded to comfort + , I didn’t feel it was worth it. There was no benefit

2.0 MediocreMarisol, Apr 2024DFW - ATL
Read more about Delta reviews

On my way home I had a layover. The flight from ATL to CLT was amended 5x while I was waiting. I could have driven home sooner. Overall from Dallas, Tx to Charlotte, NC I started my trip at 4:30pm, I didn’t get home until past midnight. I know things happen, but 5x to make me run back and forth in an airport from different terminals is excessive. I also upgraded to comfort + , I didn’t feel it was worth it. There was no benefit

On my way home I had a layover. The flight from ATL to CLT was amended 5x while I was waiting. I could have driven home sooner. Overall from Dallas, Tx to Charlotte, NC I started my trip at 4:30pm, I didn’t get home until past midnight. I know things happen, but 5x to make me run back and forth in an airport from different terminals is excessive.

They did a fine job. Can't wait to use Delta in the future.

There was a loud squeaky sound the whole time we were flying.

Had a broken tray in business class. Crew just shrugged it off.

Seat back monitors and outlets were dead and not working.

Everything was great except for the seat. The backrest would not stay in the upright position.

I usually have a positive experience with Delta. Complimentary upgrades are always nice!

Flight delayed about 2 hrs so it made it a VERY late night

The crew, food, and entertainment were all good. But my screen had some sort of bug where if I turned it off, it would turn back on after 2-5 minutes. At full brightness. It made it very hard to get any shut-eye on the overnight flight. Also, the older Boeing plane, while nicely cared for (and no doors fell off 😅👏) doesn't have the nice air quality of newer planes. So I felt a bit greasy by the time we landed in Sweden.

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.

Kayak, the site I went through to book our flight, sent very unclear emails about flight changes. Kayak was incredibly unhelpful in their communications with me about this, promising to work on resolving the issue, and failing to do so. As a result, I needed to get a hotel in Brussels and am now in the process of trying to get reimbursed. On the other hand, the flight personnel in Brussels were very helpful, taking time to look into the issue and determine if they could help. I am very grateful for them and have no problems with the airline. For Kayak, however, I will never use it again and will never recommend it to anyone, and will even discourage people who consider going through that site. My worst experience ever....

My interaction with the flight attendent Eve was horrible. I was seated in 3F and was blown away watching her repeatedly skip me as she took other customer orders for lunch...she took the customer next to me but skipped me, then took everyone's order around me (in front of and behind me) . After she had taken every customer's orders to include those behind me, she came to me and said we are out of everything except one last item. I was mortified, in that, I am a 1k flyer, had pre-ordered AND as an African American could only assume why she repeatedly skipped me...mortified. no words

The Flight was good, pilot seemed very skillful. My wheel chair sister who could barely walk was allotted the second last seat in the aircraft, with great difficulty she managed to reach on her seat, as she required attendance we were given separate seat, even on request no one cared, so much so there were single passengers who were given twin seats. May not be taken as complaint but a reminder to the checkin staff to keep in mind in future the allottment of wheel chair passengers seats.

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.
5/27Mon
1 stopCopa Airlines
12h 20mIAD-STI
$171
5/27Mon
1 stopCopa Airlines
12h 20mIAD-STI
$197
5/14Tue
3 stops
17h 34mIAD-STI
$202
5/13Mon
2 stopsAmerican Airlines
11h 08mIAD-STI
$206
5/13Mon
1 stopDelta
7h 57mIAD-STI
$207
5/14Tue
2 stopsAmerican Airlines
7h 23mIAD-STI
$212
5/8Wed
1 stopCopa Airlines
29h 26mIAD-STI
$216
5/8Wed
3 stops
12h 59mIAD-STI
$222
5/11Sat
2 stopsAmerican Airlines
8h 17mIAD-STI
$225
5/11Sat
1 stopDelta
7h 57mIAD-STI
$226

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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.
4/27Sat
multi-stopAmerican Airlines
16h 37mIAD-STI
5/28Tue
multi-stopAmerican Airlines
20h 51mSTI-IAD
$560
4/27Sat
multi-stopDelta
10h 53mIAD-STI
5/11Sat
multi-stopDelta
11h 06mSTI-IAD
$562
4/27Sat
multi-stopAmerican Airlines
19h 22mIAD-STI
5/11Sat
multi-stopAmerican Airlines
21h 50mSTI-IAD
$564
4/27Sat
multi-stopDelta
10h 53mIAD-STI
5/28Tue
multi-stopDelta
11h 06mSTI-IAD
$598
4/27Sat
multi-stop
30h 17mIAD-STI
5/11Sat
multi-stop
8h 41mSTI-IAD
$798
4/27Sat
multi-stopAmerican Airlines
10h 31mIAD-STI
5/11Sat
multi-stopAmerican Airlines
9h 37mSTI-IAD
$4,361

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Washington Dulles Airport - Santiago de los Caballeros Flights

Departure:

Washington Dulles Airport (IAD)United States

Destination:

Santiago de los Caballeros (STI)Dominican Republic

Return flight deals:

Santiago de los Caballeros - Washington Dulles Airport

Cabin classes: