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Cheap flights from Washington, D.C. Dulles Intl Airport to Santiago de los Caballeros from $189

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 12/8. 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

Delta Logo
12:11 pm - 7:36 pmIAD-STI
6h 25m1 stop
Delta Logo
6:35 am - 7:08 pmSTI-IAD
13h 33m1 stop
$467Delta
Find Deal
Wed, Nov 12 - Wed, Nov 26
American Airlines Logo
6:24 am - 8:51 pmIAD-STI
13h 27m2 stops
American Airlines Logo
7:00 am - 4:49 pmSTI-IAD
10h 49m2 stops
$480American Airlines
Find Deal
Thu, Nov 13 - Tue, Nov 18
American Airlines Logo
8:09 pm - 3:33 pmIAD-STI
18h 24m2 stops
American Airlines Logo
4:35 pm - 1:35 pmSTI-IAD
22h 00m2 stops
$482American Airlines
Find Deal
Thu, Nov 13 - Tue, Nov 18
Delta Logo
12:11 pm - 12:59 amIAD-STI
11h 48m1 stop
Delta Logo
6:35 am - 7:08 pmSTI-IAD
13h 33m1 stop
$487Delta
Find Deal
Thu, Nov 13 - Tue, Nov 18
American Airlines Logo
8:25 pm - 12:13 pmIAD-STI
15h 48m2 stops
American Airlines Logo
1:14 pm - 9:55 amSTI-IAD
20h 41m2 stops
$489American Airlines
Find Deal
Sat, Oct 18 - Tue, Oct 21
American Airlines Logo
6:25 am - 3:32 pmIAD-STI
8h 07m2 stops
American Airlines Logo
6:00 am - 4:10 pmSTI-IAD
11h 10m2 stops
$497American Airlines
Find Deal
Thu, Dec 4 - Sun, Dec 7
American Airlines Logo
6:24 am - 8:51 pmIAD-STI
13h 27m2 stops
American Airlines Logo
4:35 pm - 1:35 pmSTI-IAD
22h 00m2 stops
$500American Airlines
Find Deal
Thu, Nov 13 - Mon, Nov 17
United Airlines Logo
6:00 am - 2:53 pmIAD-STI
7h 53m1 stop
United Airlines Logo
12:52 pm - 8:57 pmSTI-IAD
9h 05m1 stop
$577United Airlines
Find Deal
Thu, Nov 13 - Fri, Nov 21
United Airlines Logo
6:15 am - 12:57 pmIAD-STI
6h 42m1 stop
United Airlines Logo
2:07 pm - 10:35 pmSTI-IAD
8h 28m1 stop
$592United Airlines
Find Deal
Fri, Oct 3 - Mon, Oct 6
Multiple Airlines Logo
8:25 am - 11:03 amIAD-STI
26h 38m3 stops
Multiple Airlines Logo
11:43 am - 11:23 amSTI-IAD
23h 40m3 stops
$621Multiple Airlines
Find Deal
Fri, Oct 3 - Mon, Oct 6

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
Nov 13
IAD6:24 amWashington, D.C. Dulles Intl
13h 27m
2 stops
STI8:51 pmSantiago de los Caballeros
Nov 18
STI7:00 amSantiago de los Caballeros
10h 49m
2 stops
IAD4:49 pmWashington, D.C. Dulles Intl
$480
Find similar
American Airlines
Nov 13
IAD8:09 pmWashington, D.C. Dulles Intl
18h 24m
2 stops
STI3:33 pmSantiago de los Caballeros
Nov 18
STI4:35 pmSantiago de los Caballeros
22h 00m
2 stops
IAD1:35 pmWashington, D.C. Dulles Intl
$482
Find similar
American Airlines
Oct 18
IAD8:25 pmWashington, D.C. Dulles Intl
15h 48m
2 stops
STI12:13 pmSantiago de los Caballeros
Oct 21
STI1:14 pmSantiago de los Caballeros
20h 41m
2 stops
IAD9:55 amWashington, D.C. Dulles Intl
$489
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
Nov 12
IAD12:11 pmWashington, D.C. Dulles Intl
6h 25m
1 stop
STI7:36 pmSantiago de los Caballeros
Nov 26
STI6:35 amSantiago de los Caballeros
13h 33m
1 stop
IAD7:08 pmWashington, D.C. Dulles Intl
$467
Find similar
Delta
Nov 13
IAD12:11 pmWashington, D.C. Dulles Intl
11h 48m
1 stop
STI12:59 amSantiago de los Caballeros
Nov 18
STI6:35 amSantiago de los Caballeros
13h 33m
1 stop
IAD7:08 pmWashington, D.C. Dulles Intl
$487
Find similar
Delta
Nov 6
IAD12:09 pmWashington, D.C. Dulles Intl
6h 57m
1 stop
STI8:06 pmSantiago de los Caballeros
Nov 10
STI6:35 amSantiago de los Caballeros
13h 33m
1 stop
IAD7:08 pmWashington, D.C. Dulles Intl
$507
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 September 17, 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

Wed 11/12

12:11 pm-7:36 pm

1 stop6h 25m

Santiago de los Caballeros

Wed 11/26

6:35 am-7:08 pm

1 stop13h 33m

$467

Washington, D.C.Santiago de los Caballeros

IAD - STI

IADSTI

Washington, D.C. Dulles Intl

Thu 11/13

6:24 am-8:51 pm

2 stops13h 27m

Santiago de los Caballeros

Tue 11/18

7:00 am-4:49 pm

2 stops10h 49m

$480

Washington, D.C.Santiago de los Caballeros

IAD - STI

IADSTI

Washington, D.C. Dulles Intl

Thu 11/13

8:09 pm-3:33 pm

2 stops18h 24m

Santiago de los Caballeros

Tue 11/18

4:35 pm-1:35 pm

2 stops22h 00m

$482

Washington, D.C.Santiago de los Caballeros

IAD - STI

IADSTI

Washington, D.C. Dulles Intl

Thu 11/13

12:11 pm-12:59 am

1 stop11h 48m

Santiago de los Caballeros

Tue 11/18

6:35 am-7:08 pm

1 stop13h 33m

$487

Washington, D.C.Santiago de los Caballeros

IAD - STI

IADSTI

Washington, D.C. Dulles Intl

Sat 10/18

8:25 pm-12:13 pm

2 stops15h 48m

Santiago de los Caballeros

Tue 10/21

1:14 pm-9:55 am

2 stops20h 41m

$489

Washington, D.C.Santiago de los Caballeros

IAD - STI

IADSTI

Washington, D.C. Dulles Intl

Thu 12/4

6:25 am-3:32 pm

2 stops8h 07m

Santiago de los Caballeros

Sun 12/7

6:00 am-4:10 pm

2 stops11h 10m

$497

Washington, D.C.Santiago de los Caballeros

IAD - STI

IADSTI

Washington, D.C. Dulles Intl

Thu 11/13

6:24 am-8:51 pm

2 stops13h 27m

Santiago de los Caballeros

Mon 11/17

4:35 pm-1:35 pm

2 stops22h 00m

$500

Washington, D.C.Santiago de los Caballeros

IAD - STI

IADSTI

Washington, D.C. Dulles Intl

Thu 11/13

6:00 am-2:53 pm

1 stop7h 53m

Santiago de los Caballeros

Fri 11/21

12:52 pm-8:57 pm

1 stop9h 05m

$577

Washington, D.C.Santiago de los Caballeros

IAD - STI

IADSTI

Washington, D.C. Dulles Intl

Fri 10/3

6:15 am-12:57 pm

1 stop6h 42m

Santiago de los Caballeros

Mon 10/6

2:07 pm-10:35 pm

1 stop8h 28m

$592

Washington, D.C.Santiago de los Caballeros

IAD - STI

IADSTI

Washington, D.C. Dulles Intl

Fri 10/3

8:25 am-11:03 am

3 stops26h 38m

Santiago de los Caballeros

Mon 10/6

11:43 am-11:23 am

3 stops23h 40m

$621

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 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 November. Flight prices, which tend to average around $429, 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 November, then flying in September is also cheap. Prices for this month can be found on momondo for an average of $483.

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
8,926 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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