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Cheap flights from Washington, D.C. Dulles Intl Airport to Santiago de los Caballeros from $169

This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from Washington, D.C. Dulles Intl Airport to Santiago de los Caballeros departing on 12/6. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
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Find the cheapest flights from Washington, D.C. Dulles Intl Airport to Santiago de los Caballeros

Cheap round-trip flights

Enter your travel dates to find the best prices.
Copa Airlines Logo
1:18 am - 2:56 pmIAD-STI
12h 38m1 stop
Copa Airlines Logo
3:51 pm - 12:32 amSTI-IAD
8h 41m1 stop
$450Copa Airlines
Find Deal
Sun, Feb 22 - Mon, Mar 16
Delta Logo
7:59 pm - 12:08 pmIAD-STI
16h 09m1 stop
Delta Logo
7:41 pm - 11:53 amSTI-IAD
16h 12m1 stop
$468Delta
Find Deal
Tue, Mar 24 - Wed, Apr 1
Copa Airlines Logo
2:18 am - 2:56 pmIAD-STI
12h 38m1 stop
Copa Airlines Logo
3:51 pm - 4:15 amSTI-IAD
12h 24m1 stop
$473Copa Airlines
Find Deal
Wed, Mar 11 - Mon, Mar 16
Delta Logo
12:30 pm - 11:27 pmIAD-STI
10h 57m1 stop
Delta Logo
7:41 pm - 11:53 amSTI-IAD
16h 12m1 stop
$488Delta
Find Deal
Wed, Mar 18 - Mon, Mar 23
American Airlines Logo
4:41 pm - 1:32 pmIAD-STI
19h 51m2 stops
American Airlines Logo
7:00 am - 11:54 pmSTI-IAD
16h 54m2 stops
$492American Airlines
Find Deal
Mon, Feb 23 - Mon, Mar 16
American Airlines Logo
5:29 pm - 3:32 pmIAD-STI
21h 03m2 stops
American Airlines Logo
4:33 pm - 10:58 amSTI-IAD
19h 25m2 stops
$497American Airlines
Find Deal
Mon, Dec 8 - Sun, Feb 8
Delta Logo
12:23 pm - 8:40 pmIAD-STI
7h 17m1 stop
Delta Logo
7:41 pm - 11:53 amSTI-IAD
16h 12m1 stop
$513Delta
Find Deal
Mon, Feb 23 - Mon, Mar 16
American Airlines Logo
8:05 pm - 3:32 pmIAD-STI
18h 27m2 stops
American Airlines Logo
4:32 pm - 10:20 amSTI-IAD
18h 48m2 stops
$517American Airlines
Find Deal
Sat, Dec 6 - Sun, Dec 14
United Airlines Logo
6:00 am - 2:53 pmIAD-STI
7h 53m1 stop
United Airlines Logo
4:00 pm - 11:21 pmSTI-IAD
8h 21m1 stop
$585United Airlines
Find Deal
Thu, Dec 4 - Mon, Dec 8
United Airlines Logo
6:00 am - 2:53 pmIAD-STI
7h 53m1 stop
United Airlines Logo
4:00 pm - 11:21 pmSTI-IAD
8h 21m1 stop
$618United Airlines
Find Deal
Wed, Nov 26 - Fri, Dec 5

Copa Airlines flights from Washington, D.C. Dulles Intl Airport to Santiago de los Caballeros

Our best Copa Airlines deals on Washington, D.C. Dulles Intl Airport to Santiago de los Caballeros flight tickets
Copa Airlines
Feb 22
IAD1:18 amWashington, D.C. Dulles Intl
12h 38m
1 stop
STI2:56 pmSantiago de los Caballeros
Mar 16
STI3:51 pmSantiago de los Caballeros
8h 41m
1 stop
IAD12:32 amWashington, D.C. Dulles Intl
$450
Find similar
Copa Airlines
Mar 11
IAD2:18 amWashington, D.C. Dulles Intl
12h 38m
1 stop
STI2:56 pmSantiago de los Caballeros
Mar 16
STI3:51 pmSantiago de los Caballeros
12h 24m
1 stop
IAD4:15 amWashington, D.C. Dulles Intl
$473
Find similar
Copa Airlines
Feb 22
IAD3:35 pmWashington, D.C. Dulles Intl
22h 21m
1 stop
STI2:56 pmSantiago de los Caballeros
Feb 26
STI3:51 pmSantiago de los Caballeros
23h 09m
1 stop
IAD2:00 pmWashington, D.C. Dulles Intl
$536
Find similar

Delta flights from Washington, D.C. Dulles Intl Airport to Santiago de los Caballeros

Our best Delta deals on Washington, D.C. Dulles Intl Airport to Santiago de los Caballeros flight tickets
Delta
Mar 24
IAD7:59 pmWashington, D.C. Dulles Intl
16h 09m
1 stop
STI12:08 pmSantiago de los Caballeros
Apr 1
STI7:41 pmSantiago de los Caballeros
16h 12m
1 stop
IAD11:53 amWashington, D.C. Dulles Intl
$468
Find similar
Delta
Mar 18
IAD12:30 pmWashington, D.C. Dulles Intl
10h 57m
1 stop
STI11:27 pmSantiago de los Caballeros
Mar 23
STI7:41 pmSantiago de los Caballeros
16h 12m
1 stop
IAD11:53 amWashington, D.C. Dulles Intl
$488
Find similar
Delta
Feb 23
IAD12:23 pmWashington, D.C. Dulles Intl
7h 17m
1 stop
STI8:40 pmSantiago de los Caballeros
Mar 16
STI7:41 pmSantiago de los Caballeros
16h 12m
1 stop
IAD11:53 amWashington, D.C. Dulles Intl
$513
Find similar

momondo Fare Finder

 
Customize your flight search to find flights from Washington, D.C. Dulles Intl Airport to Santiago de los Caballeros that fit within your specific budget. Explore options based on user searches and filter the results based on your desired price range. Find flights that match your budget for a cost-effective journey. Over the last 7 days, momondo users made 832,500 searches. Data last updated November 3, 2025.
Use the filters below to find and compare flights from Washington, D.C. Dulles Intl Airport to Santiago de los Caballeros that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Washington, D.C.Santiago de los Caballeros

IAD - STI

IADSTI

Washington, D.C. Dulles Intl

Sun 2/22

1:18 am-2:56 pm

1 stop12h 38m

Santiago de los Caballeros

Mon 3/16

3:51 pm-12:32 am

1 stop8h 41m

$450

Washington, D.C.Santiago de los Caballeros

IAD - STI

IADSTI

Washington, D.C. Dulles Intl

Tue 3/24

7:59 pm-12:08 pm

1 stop16h 09m

Santiago de los Caballeros

Wed 4/1

7:41 pm-11:53 am

1 stop16h 12m

$468

Washington, D.C.Santiago de los Caballeros

IAD - STI

IADSTI

Washington, D.C. Dulles Intl

Wed 3/11

2:18 am-2:56 pm

1 stop12h 38m

Santiago de los Caballeros

Mon 3/16

3:51 pm-4:15 am

1 stop12h 24m

$473

Washington, D.C.Santiago de los Caballeros

IAD - STI

IADSTI

Washington, D.C. Dulles Intl

Wed 3/18

12:30 pm-11:27 pm

1 stop10h 57m

Santiago de los Caballeros

Mon 3/23

7:41 pm-11:53 am

1 stop16h 12m

$488

Washington, D.C.Santiago de los Caballeros

IAD - STI

IADSTI

Washington, D.C. Dulles Intl

Mon 2/23

4:41 pm-1:32 pm

2 stops19h 51m

Santiago de los Caballeros

Mon 3/16

7:00 am-11:54 pm

2 stops16h 54m

$492

Washington, D.C.Santiago de los Caballeros

IAD - STI

IADSTI

Washington, D.C. Dulles Intl

Mon 12/8

5:29 pm-3:32 pm

2 stops21h 03m

Santiago de los Caballeros

Sun 2/8

4:33 pm-10:58 am

2 stops19h 25m

$497

Washington, D.C.Santiago de los Caballeros

IAD - STI

IADSTI

Washington, D.C. Dulles Intl

Mon 2/23

12:23 pm-8:40 pm

1 stop7h 17m

Santiago de los Caballeros

Mon 3/16

7:41 pm-11:53 am

1 stop16h 12m

$513

Washington, D.C.Santiago de los Caballeros

IAD - STI

IADSTI

Washington, D.C. Dulles Intl

Sat 12/6

8:05 pm-3:32 pm

2 stops18h 27m

Santiago de los Caballeros

Sun 12/14

4:32 pm-10:20 am

2 stops18h 48m

$517

Washington, D.C.Santiago de los Caballeros

IAD - STI

IADSTI

Washington, D.C. Dulles Intl

Thu 12/4

6:00 am-2:53 pm

1 stop7h 53m

Santiago de los Caballeros

Mon 12/8

4:00 pm-11:21 pm

1 stop8h 21m

$585

Washington, D.C.Santiago de los Caballeros

IAD - STI

IADSTI

Washington, D.C. Dulles Intl

Wed 11/26

6:00 am-2:53 pm

1 stop7h 53m

Santiago de los Caballeros

Fri 12/5

4:00 pm-11:21 pm

1 stop8h 21m

$618

Flights are sorted by cheapest round-trip flights first.

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See travel insights to Santiago de los Caballeros from

How to get the cheapest flight ticket from Washington, D.C. Dulles Intl Airport to Santiago de los Caballeros

Look no further. We've gone through all the searches for this route on momondo so you have the important information and insights to find the cheapest flight ticket for your trip

What is the cheapest day to depart on your flight to Santiago de los Caballeros?

The cheapest day to depart from Washington, D.C. Dulles Intl Airport to Santiago de los Caballeros is on a Sunday when prices can be found for as low as $475. When flying out on a Friday, the most expensive travel day of the week, you can expect to see flight prices from Washington, D.C. Dulles Intl Airport to Santiago de los Caballeros for around $614.

What is the cheapest time of day to depart on your flight to Santiago de los Caballeros?

Our data shows that the cheapest Washington, D.C. Dulles Intl Airport to Santiago de los Caballeros flights are usually those with departure times in the morning. Our users have found flights to Santiago de los Caballeros in the morning for as low as $520. At noon is when there is more demand to fly to Santiago de los Caballeros, so prices are often more expensive at around $657 per ticket.

When to book flights from Washington, D.C. Dulles Intl Airport to Santiago de los Caballeros

Are you open to changing your travel dates? Check out the ideal times to fly from Washington, D.C. Dulles Intl Airport to Santiago de los Caballeros according to our flight data. Find out which month and days have the cheapest flights.
Estimated round-trip price

Cheap Washington, D.C. Dulles Intl Airport to Santiago de los Caballeros (IAD to STI) flight deals and tips

Find info about flight duration, direct flights, and airports for your flight from Washington, D.C. Dulles Intl Airport to Santiago de los Caballeros

Direct flights

None
There are no direct flights from Washington, D.C. Dulles Intl Airport to Santiago de los Caballeros. There are no popular flight routes from Washington, D.C. Dulles Intl Airport to Santiago de los Caballeros.
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  • How far is Washington, D.C. Dulles Intl to Santiago de los Caballeros by plane?

    A flight from Washington, D.C. Dulles Intl to Santiago de los Caballeros will travel around 1405.2 mi. Typically, this will take 6h 25m by plane in normal conditions.

  • When did momondo last update prices for flights from Washington, D.C. Dulles Intl Airport to Santiago de los Caballeros Airport?

    Prices for flights from Washington, D.C. Dulles Intl Airport to Santiago de los Caballeros Airport are updated daily.

  • How many operators does momondo search for flights from Washington, D.C. Dulles Intl Airport to Santiago de los Caballeros Airport?

  • How old do you have to be to fly from Washington, D.C. Dulles Intl Airport to Santiago de los Caballeros Airport?

    The minimum age for a child to fly alone is five, but airlines that offer an unaccompanied minor (UNMR) service may have their own age limitations. Flight duration, scheduling, and layovers are among the considerations that may influence age limits. We recommend that you double-check with the airline you are booking with for travel from Washington, D.C. Dulles Intl Airport to Santiago de los Caballeros Airport.

  • What documentation or ID do you need to fly to Santiago de los Caballeros Airport?

    The travel and health documents required for your trip to Santiago de los Caballeros Airport can vary based on your itinerary and personal situation. As a rule, consider having multiple documents such as a national ID card or driver’s license, and a passport valid for six-months after you plan to arrive at Santiago de los Caballeros Airport. We always recommend checking with your airline or a trusted third party such as IATA to get advice.

  • What is the most popular airline from Washington, D.C. Dulles Intl Airport to Santiago de los Caballeros?

Best airlines flying from Washington, D.C. Dulles Intl Airport to Santiago de los Caballeros

Compare and see reviews for airlines that fly from Washington, D.C. Dulles Intl Airport to Santiago de los Caballeros with momondo
Airline
Rating
Free Cancellation
Price
United AirlinesPriceFrom $488Free CancellationRating
7.4
8,997 reviews
Search United Airlines flights

Why use momondo?

Why should I use momondo to find a flight deal from Washington, D.C. to Santiago de los Caballeros?

momondo compares prices from hundreds of airlines and agents so you can find and book the best deal on flights from Washington, D.C. to Santiago de los Caballeros. Millions of users trust and use momondo every year so you are in good hands.

Can I find flights from Washington, D.C. to Santiago de los Caballeros with flexible booking policies on momondo?

All flight searches from Washington, D.C. to Santiago de los Caballeros on momondo can be filtered to show those which offer flexible booking policies.

How can momondo help me find flights from Washington, D.C. to Santiago de los Caballeros?

momondo provides multiple filters to help you find the best flight to Santiago de los Caballeros from Washington, D.C.. Filter by price, airline, airports, cabin, aircraft, payment method, number of stops and more.

I’m not ready to book a flight from Washington, D.C. to Santiago de los Caballeros right now. Can momondo alert me if prices change?

If you are not ready to book a flight from Washington, D.C. to Santiago de los Caballeros now, use our insights above to find helpful tips or alternatively set up a price alert, where momondo will track prices on flights to Santiago de los Caballeros and let you know when they change.

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