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Cheap flights from Washington, D.C. Dulles Intl Airport to Santiago de los Caballeros from $190

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 4/25. 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
2:21 am - 2:50 pm
IAD
-
STI
12h 29m
1 stop
Copa Airlines Logo
3:59 pm - 4:22 am
STI
-
IAD
12h 23m
1 stop
$451Copa Airlines
Sun, Apr 12 - Mon, Apr 20
Copa Airlines Logo
2:21 am - 2:50 pm
IAD
-
STI
12h 29m
1 stop
Copa Airlines Logo
3:59 pm - 4:21 am
STI
-
IAD
12h 22m
1 stop
$474Copa Airlines
Wed, May 13 - Mon, May 18
Delta Logo
7:59 pm - 12:02 pm
IAD
-
STI
16h 03m
1 stop
Delta Logo
6:00 am - 6:08 pm
STI
-
IAD
12h 08m
1 stop
$499Delta
Tue, Apr 7 - Tue, Apr 21
Delta Logo
6:00 am - 11:54 pm
IAD
-
STI
17h 54m
2 stops
Delta Logo
8:59 pm - 4:31 pm
STI
-
IAD
19h 32m
2 stops
$503Delta
Tue, Apr 7 - Tue, Apr 21
American Airlines Logo
8:11 pm - 12:23 pm
IAD
-
STI
16h 12m
2 stops
American Airlines Logo
1:32 pm - 11:06 pm
STI
-
IAD
9h 34m
2 stops
$505American Airlines
Thu, Apr 30 - Tue, May 5
American Airlines Logo
2:03 pm - 12:30 pm
IAD
-
STI
22h 27m
2 stops
American Airlines Logo
1:32 pm - 11:59 pm
STI
-
IAD
10h 27m
2 stops
$512American Airlines
Wed, Apr 1 - Wed, May 6
American Airlines Logo
2:03 pm - 12:30 pm
IAD
-
STI
22h 27m
2 stops
American Airlines Logo
1:32 pm - 2:51 pm
STI
-
IAD
25h 19m
2 stops
$513American Airlines
Wed, Apr 1 - Wed, May 6
American Airlines Logo
2:03 pm - 12:30 pm
IAD
-
STI
22h 27m
2 stops
American Airlines Logo
1:32 pm - 11:59 pm
STI
-
IAD
10h 27m
2 stops
$516American Airlines
Wed, Apr 1 - Wed, May 6
Delta Logo
12:45 pm - 7:33 pm
IAD
-
STI
6h 48m
1 stop
Delta Logo
8:59 pm - 12:23 pm
STI
-
IAD
15h 24m
1 stop
$519Delta
Wed, May 6 - Mon, May 11
United Airlines Logo
8:20 am - 3:12 pm
IAD
-
STI
6h 52m
1 stop
United Airlines Logo
4:23 pm - 11:25 pm
STI
-
IAD
7h 02m
1 stop
$522United Airlines
Thu, Apr 30 - Mon, May 4

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
Apr 12
IAD2:21 amWashington, D.C. Dulles Intl
12h 29m
1 stop
STI2:50 pmSantiago de los Caballeros
Apr 20
STI3:59 pmSantiago de los Caballeros
12h 23m
1 stop
IAD4:22 amWashington, D.C. Dulles Intl
$451
Copa Airlines
May 13
IAD2:21 amWashington, D.C. Dulles Intl
12h 29m
1 stop
STI2:50 pmSantiago de los Caballeros
May 18
STI3:59 pmSantiago de los Caballeros
12h 22m
1 stop
IAD4:21 amWashington, D.C. Dulles Intl
$474

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
Apr 7
IAD7:59 pmWashington, D.C. Dulles Intl
16h 03m
1 stop
STI12:02 pmSantiago de los Caballeros
Apr 21
STI6:00 amSantiago de los Caballeros
12h 08m
1 stop
IAD6:08 pmWashington, D.C. Dulles Intl
$499
Delta
Apr 7
IAD6:00 amWashington, D.C. Dulles Intl
17h 54m
2 stops
STI11:54 pmSantiago de los Caballeros
Apr 21
STI8:59 pmSantiago de los Caballeros
19h 32m
2 stops
IAD4:31 pmWashington, D.C. Dulles Intl
$503
Delta
May 6
IAD12:45 pmWashington, D.C. Dulles Intl
6h 48m
1 stop
STI7:33 pmSantiago de los Caballeros
May 11
STI8:59 pmSantiago de los Caballeros
15h 24m
1 stop
IAD12:23 pmWashington, D.C. Dulles Intl
$519

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 March 3, 2026.
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 4/12

2:21 am-2:50 pm

1 stop12h 29m

Santiago de los Caballeros

Mon 4/20

3:59 pm-4:22 am

1 stop12h 23m

$451

Washington, D.C.Santiago de los Caballeros

IAD - STI

IADSTI

Washington, D.C. Dulles Intl

Wed 5/13

2:21 am-2:50 pm

1 stop12h 29m

Santiago de los Caballeros

Mon 5/18

3:59 pm-4:21 am

1 stop12h 22m

$474

Washington, D.C.Santiago de los Caballeros

IAD - STI

IADSTI

Washington, D.C. Dulles Intl

Tue 4/7

7:59 pm-12:02 pm

1 stop16h 03m

Santiago de los Caballeros

Tue 4/21

6:00 am-6:08 pm

1 stop12h 08m

$499

Washington, D.C.Santiago de los Caballeros

IAD - STI

IADSTI

Washington, D.C. Dulles Intl

Tue 4/7

6:00 am-11:54 pm

2 stops17h 54m

Santiago de los Caballeros

Tue 4/21

8:59 pm-4:31 pm

2 stops19h 32m

$503

Washington, D.C.Santiago de los Caballeros

IAD - STI

IADSTI

Washington, D.C. Dulles Intl

Thu 4/30

8:11 pm-12:23 pm

2 stops16h 12m

Santiago de los Caballeros

Tue 5/5

1:32 pm-11:06 pm

2 stops9h 34m

$505

Washington, D.C.Santiago de los Caballeros

IAD - STI

IADSTI

Washington, D.C. Dulles Intl

Wed 4/1

2:03 pm-12:30 pm

2 stops22h 27m

Santiago de los Caballeros

Wed 5/6

1:32 pm-11:59 pm

2 stops10h 27m

$512

Washington, D.C.Santiago de los Caballeros

IAD - STI

IADSTI

Washington, D.C. Dulles Intl

Wed 4/1

2:03 pm-12:30 pm

2 stops22h 27m

Santiago de los Caballeros

Wed 5/6

1:32 pm-2:51 pm

2 stops25h 19m

$513

Washington, D.C.Santiago de los Caballeros

IAD - STI

IADSTI

Washington, D.C. Dulles Intl

Wed 4/1

2:03 pm-12:30 pm

2 stops22h 27m

Santiago de los Caballeros

Wed 5/6

1:32 pm-11:59 pm

2 stops10h 27m

$516

Washington, D.C.Santiago de los Caballeros

IAD - STI

IADSTI

Washington, D.C. Dulles Intl

Wed 5/6

12:45 pm-7:33 pm

1 stop6h 48m

Santiago de los Caballeros

Mon 5/11

8:59 pm-12:23 pm

1 stop15h 24m

$519

Washington, D.C.Santiago de los Caballeros

IAD - STI

IADSTI

Washington, D.C. Dulles Intl

Thu 4/30

8:20 am-3:12 pm

1 stop6h 52m

Santiago de los Caballeros

Mon 5/4

4:23 pm-11:25 pm

1 stop7h 02m

$522

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 airline that flies from Washington, D.C. Dulles Intl to Santiago de los Caballeros?

Delta and American Airlines are the most popular carriers operating from Washington, D.C. Dulles Intl to Santiago de los Caballeros

What airlines fly to Santiago de los Caballeros?

United Airlines, Copa Airlines and Delta are the top three most popular airlines that fly to Santiago de los Caballeros from Washington, D.C. Dulles Intl Airport according to our data. United Airlines is the first choice among our users, with 43% of people opting to fly with this airline when traveling to Santiago de los Caballeros. Keep in mind that there are 5 different airlines that fly to Santiago de los Caballeros on a routine basis, so you have a few additional options to choose from.

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 41m

Direct flights

None
The fastest flight from Washington, D.C. Dulles Intl Airport to Santiago de los Caballeros takes 6h 41m
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 41m 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
9,377 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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