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Cheap flights from Washington, D.C. Dulles Intl Airport to Santiago de los Caballeros from $181

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 1/5. 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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0 bags

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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 pm
IAD
-
STI
12h 38m1 stop
Copa Airlines Logo
3:51 pm - 12:32 am
STI
-
IAD
8h 41m1 stop
$450Copa Airlines
Sun, Feb 22 - Mon, Mar 16
Multiple Airlines Logo
5:40 pm - 3:33 pm
IAD
-
STI
20h 53m3 stops
Multiple Airlines Logo
4:40 pm - 11:23 am
STI
-
IAD
19h 43m3 stops
$456Multiple Airlines
Tue, Feb 3 - Tue, Feb 10
Delta Logo
12:23 pm - 8:34 pm
IAD
-
STI
7h 11m1 stop
Delta Logo
6:38 am - 7:09 pm
STI
-
IAD
13h 31m1 stop
$468Delta
Tue, Feb 3 - Tue, Feb 10
American Airlines Logo
9:13 am - 10:05 pm
IAD
-
STI
11h 52m2 stops
American Airlines Logo
2:33 pm - 10:22 am
STI
-
IAD
20h 49m2 stops
$472American Airlines
Thu, Feb 19 - Tue, Feb 24
Multiple Airlines Logo
9:40 am - 2:42 am
IAD
-
STI
16h 02m2 stops
Multiple Airlines Logo
4:40 pm - 11:21 am
STI
-
IAD
19h 41m3 stops
$473Multiple Airlines
Sat, Jan 3 - Fri, Jan 16
Delta Logo
1:19 pm - 12:14 am
IAD
-
STI
10h 55m1 stop
Delta Logo
7:15 pm - 11:51 am
STI
-
IAD
16h 36m1 stop
$488Delta
Wed, May 6 - Mon, May 11
Copa Airlines Logo
2:18 am - 2:56 pm
IAD
-
STI
12h 38m1 stop
Copa Airlines Logo
3:51 pm - 4:15 am
STI
-
IAD
12h 24m1 stop
$489Copa Airlines
Wed, Mar 11 - Mon, Mar 16
American Airlines Logo
2:06 pm - 1:31 pm
IAD
-
STI
22h 25m2 stops
American Airlines Logo
1:15 pm - 10:23 am
STI
-
IAD
21h 08m2 stops
$492American Airlines
Mon, Feb 23 - Mon, Mar 16
American Airlines Logo
5:46 pm - 3:50 pm
IAD
-
STI
21h 04m2 stops
American Airlines Logo
2:33 pm - 8:43 am
STI
-
IAD
19h 10m2 stops
$497American Airlines
Mon, Feb 9 - Sun, Feb 15
Copa Airlines Logo
4:36 pm - 2:50 pm
IAD
-
STI
22h 14m1 stop
Copa Airlines Logo
3:59 pm - 3:06 pm
STI
-
IAD
23h 07m1 stop
$499Copa Airlines
Fri, Apr 10 - Mon, Apr 13

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

Our best American Airlines deals on Washington, D.C. Dulles Intl Airport to Santiago de los Caballeros flight tickets
American Airlines
Feb 19
IAD9:13 amWashington, D.C. Dulles Intl
11h 52m
2 stops
STI10:05 pmSantiago de los Caballeros
Feb 24
STI2:33 pmSantiago de los Caballeros
20h 49m
2 stops
IAD10:22 amWashington, D.C. Dulles Intl
$472
Find similar
American Airlines
Feb 23
IAD2:06 pmWashington, D.C. Dulles Intl
22h 25m
2 stops
STI1:31 pmSantiago de los Caballeros
Mar 16
STI1:15 pmSantiago de los Caballeros
21h 08m
2 stops
IAD10:23 amWashington, D.C. Dulles Intl
$492
Find similar
American Airlines
Feb 9
IAD5:46 pmWashington, D.C. Dulles Intl
21h 04m
2 stops
STI3:50 pmSantiago de los Caballeros
Feb 15
STI2:33 pmSantiago de los Caballeros
19h 10m
2 stops
IAD8:43 amWashington, D.C. Dulles Intl
$497
Find similar

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
12h 24m
1 stop
IAD4:15 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
$489
Find similar
Copa Airlines
Apr 10
IAD4:36 pmWashington, D.C. Dulles Intl
22h 14m
1 stop
STI2:50 pmSantiago de los Caballeros
Apr 13
STI3:59 pmSantiago de los Caballeros
23h 07m
1 stop
IAD3:06 pmWashington, D.C. Dulles Intl
$499
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 December 22, 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 2/3

5:40 pm-3:33 pm

3 stops20h 53m

Santiago de los Caballeros

Tue 2/10

4:40 pm-11:23 am

3 stops19h 43m

$456

Washington, D.C.Santiago de los Caballeros

IAD - STI

IADSTI

Washington, D.C. Dulles Intl

Tue 2/3

12:23 pm-8:34 pm

1 stop7h 11m

Santiago de los Caballeros

Tue 2/10

6:38 am-7:09 pm

1 stop13h 31m

$468

Washington, D.C.Santiago de los Caballeros

IAD - STI

IADSTI

Washington, D.C. Dulles Intl

Thu 2/19

9:13 am-10:05 pm

2 stops11h 52m

Santiago de los Caballeros

Tue 2/24

2:33 pm-10:22 am

2 stops20h 49m

$472

Washington, D.C.Santiago de los Caballeros

IAD - STI

IADSTI

Washington, D.C. Dulles Intl

Sat 1/3

9:40 am-2:42 am

2 stops16h 02m

Santiago de los Caballeros

Fri 1/16

4:40 pm-11:21 am

3 stops19h 41m

$473

Washington, D.C.Santiago de los Caballeros

IAD - STI

IADSTI

Washington, D.C. Dulles Intl

Wed 5/6

1:19 pm-12:14 am

1 stop10h 55m

Santiago de los Caballeros

Mon 5/11

7:15 pm-11:51 am

1 stop16h 36m

$488

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

$489

Washington, D.C.Santiago de los Caballeros

IAD - STI

IADSTI

Washington, D.C. Dulles Intl

Mon 2/23

2:06 pm-1:31 pm

2 stops22h 25m

Santiago de los Caballeros

Mon 3/16

1:15 pm-10:23 am

2 stops21h 08m

$492

Washington, D.C.Santiago de los Caballeros

IAD - STI

IADSTI

Washington, D.C. Dulles Intl

Mon 2/9

5:46 pm-3:50 pm

2 stops21h 04m

Santiago de los Caballeros

Sun 2/15

2:33 pm-8:43 am

2 stops19h 10m

$497

Washington, D.C.Santiago de los Caballeros

IAD - STI

IADSTI

Washington, D.C. Dulles Intl

Fri 4/10

4:36 pm-2:50 pm

1 stop22h 14m

Santiago de los Caballeros

Mon 4/13

3:59 pm-3:06 pm

1 stop23h 07m

$499

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 20 resultsSorted by cheapest 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

Fastest flight time

6h 28m

Direct flights

None
The fastest flight from Washington, D.C. Dulles Intl Airport to Santiago de los Caballeros takes 6h 28m
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.
Search flight deals

  • 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 28m 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 $467Free CancellationRating
7.4
9,105 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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