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Cheap flights from Washington, D.C. Dulles Intl Airport to Santiago de los Caballeros from $318

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 7/29. 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.
Delta Logo
12:29 pm - 7:33 pm
IAD
-
STI
7h 04m
1 stop
Delta Logo
6:00 am - 6:32 pm
STI
-
IAD
12h 32m
1 stop
$540Delta
Sun, Jun 21 - Tue, Jun 30
American Airlines Logo
8:15 pm - 12:20 pm
IAD
-
STI
16h 05m
2 stops
American Airlines Logo
1:40 pm - 11:51 pm
STI
-
IAD
10h 11m
2 stops
$545American Airlines
Wed, Sep 23 - Tue, Sep 29
American Airlines Logo
6:33 am - 9:03 pm
IAD
-
STI
14h 30m
2 stops
American Airlines Logo
8:30 am - 10:55 pm
STI
-
IAD
14h 25m
2 stops
$556American Airlines
Thu, Aug 6 - Tue, Aug 11
Delta Logo
12:30 pm - 7:11 pm
IAD
-
STI
6h 41m
1 stop
Delta Logo
8:40 pm - 11:51 am
STI
-
IAD
15h 11m
1 stop
$560Delta
Wed, Sep 23 - Mon, Sep 28
Copa Airlines Logo
2:21 am - 2:59 pm
IAD
-
STI
12h 38m
1 stop
Copa Airlines Logo
4:01 pm - 12:33 am
STI
-
IAD
8h 32m
1 stop
$562Copa Airlines
Sun, Jun 28 - Sat, Jul 4
Copa Airlines Logo
6:25 am - 2:59 pm
IAD
-
STI
8h 34m
1 stop
Copa Airlines Logo
4:01 pm - 4:21 am
STI
-
IAD
12h 20m
1 stop
$577Copa Airlines
Mon, Jun 8 - Mon, Jun 15
Delta Logo
12:29 pm - 1:59 am
IAD
-
STI
13h 30m
1 stop
Delta Logo
6:00 am - 6:32 pm
STI
-
IAD
12h 32m
1 stop
$585Delta
Wed, Jun 10 - Tue, Jun 16
American Airlines Logo
8:22 pm - 2:37 pm
IAD
-
STI
18h 15m
2 stops
American Airlines Logo
9:07 am - 12:13 am
STI
-
IAD
15h 06m
2 stops
$590American Airlines
Tue, Jun 16 - Wed, Jun 24
Delta Logo
6:36 pm - 1:55 am
IAD
-
STI
7h 19m
1 stop
Delta Logo
8:59 pm - 11:49 am
STI
-
IAD
14h 50m
1 stop
$605Delta
Wed, Jul 22 - Sun, Jul 26
Copa Airlines Logo
2:21 am - 2:59 pm
IAD
-
STI
12h 38m
1 stop
Copa Airlines Logo
4:01 pm - 4:21 am
STI
-
IAD
12h 20m
1 stop
$616Copa Airlines
Sun, Jun 7 - Mon, Jun 15

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
Jun 8
IAD6:25 amWashington, D.C. Dulles Intl
8h 34m
1 stop
STI2:59 pmSantiago de los Caballeros
Jun 15
STI4:01 pmSantiago de los Caballeros
12h 20m
1 stop
IAD4:21 amWashington, D.C. Dulles Intl
$577
Copa Airlines
Jun 7
IAD2:21 amWashington, D.C. Dulles Intl
12h 38m
1 stop
STI2:59 pmSantiago de los Caballeros
Jun 15
STI4:01 pmSantiago de los Caballeros
12h 20m
1 stop
IAD4:21 amWashington, D.C. Dulles Intl
$616
Copa Airlines
Jun 26
IAD4:38 pmWashington, D.C. Dulles Intl
22h 21m
1 stop
STI2:59 pmSantiago de los Caballeros
Jun 29
STI4:01 pmSantiago de los Caballeros
8h 32m
1 stop
IAD12:33 amWashington, D.C. Dulles Intl
$633

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
Jun 21
IAD12:29 pmWashington, D.C. Dulles Intl
7h 04m
1 stop
STI7:33 pmSantiago de los Caballeros
Jun 30
STI6:00 amSantiago de los Caballeros
12h 32m
1 stop
IAD6:32 pmWashington, D.C. Dulles Intl
$540
Delta
Sep 23
IAD12:30 pmWashington, D.C. Dulles Intl
6h 41m
1 stop
STI7:11 pmSantiago de los Caballeros
Sep 28
STI8:40 pmSantiago de los Caballeros
15h 11m
1 stop
IAD11:51 amWashington, D.C. Dulles Intl
$560
Delta
Jun 10
IAD12:29 pmWashington, D.C. Dulles Intl
13h 30m
1 stop
STI1:59 amSantiago de los Caballeros
Jun 16
STI6:00 amSantiago de los Caballeros
12h 32m
1 stop
IAD6:32 pmWashington, D.C. Dulles Intl
$585

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 May 16, 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

Cheapest round-trip
Quickest round-trip

Washington, D.C.Santiago de los Caballeros

IAD - STI

IADSTI

Washington, D.C. Dulles Intl

Sun 6/21

12:29 pm-7:33 pm

1 stop7h 04m

Santiago de los Caballeros

Tue 6/30

6:00 am-6:32 pm

1 stop12h 32m

$540

Washington, D.C.Santiago de los Caballeros

IAD - STI

IADSTI

Washington, D.C. Dulles Intl

Wed 9/23

8:15 pm-12:20 pm

2 stops16h 05m

Santiago de los Caballeros

Tue 9/29

1:40 pm-11:51 pm

2 stops10h 11m

$545

Washington, D.C.Santiago de los Caballeros

IAD - STI

IADSTI

Washington, D.C. Dulles Intl

Thu 8/6

6:33 am-9:03 pm

2 stops14h 30m

Santiago de los Caballeros

Tue 8/11

8:30 am-10:55 pm

2 stops14h 25m

$556

Washington, D.C.Santiago de los Caballeros

IAD - STI

IADSTI

Washington, D.C. Dulles Intl

Wed 9/23

12:30 pm-7:11 pm

1 stop6h 41m

Santiago de los Caballeros

Mon 9/28

8:40 pm-11:51 am

1 stop15h 11m

$560

Washington, D.C.Santiago de los Caballeros

IAD - STI

IADSTI

Washington, D.C. Dulles Intl

Sun 6/28

2:21 am-2:59 pm

1 stop12h 38m

Santiago de los Caballeros

Sat 7/4

4:01 pm-12:33 am

1 stop8h 32m

$562

Washington, D.C.Santiago de los Caballeros

IAD - STI

IADSTI

Washington, D.C. Dulles Intl

Mon 6/8

6:25 am-2:59 pm

1 stop8h 34m

Santiago de los Caballeros

Mon 6/15

4:01 pm-4:21 am

1 stop12h 20m

$577

Washington, D.C.Santiago de los Caballeros

IAD - STI

IADSTI

Washington, D.C. Dulles Intl

Wed 6/10

12:29 pm-1:59 am

1 stop13h 30m

Santiago de los Caballeros

Tue 6/16

6:00 am-6:32 pm

1 stop12h 32m

$585

Washington, D.C.Santiago de los Caballeros

IAD - STI

IADSTI

Washington, D.C. Dulles Intl

Tue 6/16

8:22 pm-2:37 pm

2 stops18h 15m

Santiago de los Caballeros

Wed 6/24

9:07 am-12:13 am

2 stops15h 06m

$590

Washington, D.C.Santiago de los Caballeros

IAD - STI

IADSTI

Washington, D.C. Dulles Intl

Wed 7/22

6:36 pm-1:55 am

1 stop7h 19m

Santiago de los Caballeros

Sun 7/26

8:59 pm-11:49 am

1 stop14h 50m

$605

Washington, D.C.Santiago de los Caballeros

IAD - STI

IADSTI

Washington, D.C. Dulles Intl

Sun 6/7

2:21 am-2:59 pm

1 stop12h 38m

Santiago de los Caballeros

Mon 6/15

4:01 pm-4:21 am

1 stop12h 20m

$616

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 typical price of a round-trip flight between Washington, D.C. Dulles Intl Airport and Santiago de los Caballeros?

What is the cheapest month to fly to Santiago de los Caballeros?

The cheapest month to fly to Santiago de los Caballeros from Washington, D.C. Dulles Intl Airport is in September. Flight prices, which tend to average around $153, are often lower during this time because this is during the off-season. If you aren’t able to travel to Santiago de los Caballeros during the month of September, then flying in March is also cheap. Prices for this month can be found on momondo for an average of $467.

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 21m

Direct flights

None
The fastest flight from Washington, D.C. Dulles Intl Airport to Santiago de los Caballeros takes 6h 21m
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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Frequently asked questions about flying from Washington, D.C. Dulles Intl Airport to Santiago de los Caballeros

  • 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 21m 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
9,726 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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