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Cheap flights from Washington, D.C. Reagan-National Airport to Santiago de los Caballeros from $178

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. Reagan-National Airport to Santiago de los Caballeros departing on 2/3. 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. Reagan-National Airport to Santiago de los Caballeros

Cheap round-trip flights

Enter your travel dates to find the best prices.
JetBlue Logo
6:00 am - 2:13 amDCA-STI
19h 13m1 stop
JetBlue Logo
5:10 am - 5:35 pmSTI-DCA
13h 25m1 stop
$421JetBlue
Find Deal
Mon, Dec 8 - Sun, Feb 8
JetBlue Logo
6:59 pm - 3:20 amDCA-STI
7h 21m1 stop
JetBlue Logo
6:01 am - 2:44 pmSTI-DCA
9h 43m1 stop
$424JetBlue
Find Deal
Mon, Nov 24 - Wed, Dec 3
JetBlue Logo
5:43 pm - 3:36 amDCA-STI
8h 53m1 stop
JetBlue Logo
6:01 am - 6:04 pmSTI-DCA
13h 03m1 stop
$427JetBlue
Find Deal
Tue, Nov 25 - Wed, Dec 3
JetBlue Logo
6:00 am - 2:13 amDCA-STI
19h 13m1 stop
JetBlue Logo
4:10 am - 10:47 pmSTI-DCA
19h 37m1 stop
$436JetBlue
Find Deal
Mon, Dec 8 - Sat, Feb 7
American Airlines Logo
6:59 am - 8:03 pmDCA-STI
13h 04m1 stop
American Airlines Logo
7:00 am - 3:23 pmSTI-DCA
8h 23m1 stop
$488American Airlines
Find Deal
Wed, Mar 11 - Mon, Mar 16
American Airlines Logo
11:14 am - 8:03 pmDCA-STI
8h 49m2 stops
American Airlines Logo
7:00 am - 9:55 pmSTI-DCA
14h 55m1 stop
$492American Airlines
Find Deal
Wed, Mar 11 - Mon, Mar 16
American Airlines Logo
9:56 am - 10:04 pmDCA-STI
11h 08m2 stops
American Airlines Logo
7:00 am - 11:59 pmSTI-DCA
16h 59m1 stop
$509American Airlines
Find Deal
Wed, Mar 4 - Sun, Mar 8
American Airlines Logo
6:57 am - 8:33 pmDCA-STI
12h 36m2 stops
American Airlines Logo
6:00 am - 5:46 pmSTI-DCA
12h 46m2 stops
$517American Airlines
Find Deal
Mon, Dec 8 - Sun, Feb 8
Delta Logo
8:50 am - 7:36 pmDCA-STI
9h 46m1 stop
Delta Logo
6:40 am - 4:02 pmSTI-DCA
10h 22m1 stop
$548Delta
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Sun, Nov 23 - Thu, Nov 27
Delta Logo
6:07 am - 1:06 pmDCA-STI
5h 59m1 stop
Delta Logo
9:01 pm - 10:05 amSTI-DCA
14h 04m1 stop
$568Delta
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Mon, Nov 24 - Mon, Dec 1

JetBlue flights from Washington, D.C. Reagan-National Airport to Santiago de los Caballeros

Our best JetBlue deals on Washington, D.C. Reagan-National Airport to Santiago de los Caballeros flight tickets
JetBlue
Dec 8
DCA6:00 amWashington, D.C. Reagan-National
19h 13m
1 stop
STI2:13 amSantiago de los Caballeros
Feb 8
STI5:10 amSantiago de los Caballeros
13h 25m
1 stop
DCA5:35 pmWashington, D.C. Reagan-National
$421
Find similar
JetBlue
Nov 24
DCA6:59 pmWashington, D.C. Reagan-National
7h 21m
1 stop
STI3:20 amSantiago de los Caballeros
Dec 3
STI6:01 amSantiago de los Caballeros
9h 43m
1 stop
DCA2:44 pmWashington, D.C. Reagan-National
$424
Find similar
JetBlue
Nov 25
DCA5:43 pmWashington, D.C. Reagan-National
8h 53m
1 stop
STI3:36 amSantiago de los Caballeros
Dec 3
STI6:01 amSantiago de los Caballeros
13h 03m
1 stop
DCA6:04 pmWashington, D.C. Reagan-National
$427
Find similar

American Airlines flights from Washington, D.C. Reagan-National Airport to Santiago de los Caballeros

Our best American Airlines deals on Washington, D.C. Reagan-National Airport to Santiago de los Caballeros flight tickets
American Airlines
Mar 11
DCA6:59 amWashington, D.C. Reagan-National
13h 04m
1 stop
STI8:03 pmSantiago de los Caballeros
Mar 16
STI7:00 amSantiago de los Caballeros
8h 23m
1 stop
DCA3:23 pmWashington, D.C. Reagan-National
$488
Find similar
American Airlines
Mar 11
DCA11:14 amWashington, D.C. Reagan-National
8h 49m
2 stops
STI8:03 pmSantiago de los Caballeros
Mar 16
STI7:00 amSantiago de los Caballeros
14h 55m
1 stop
DCA9:55 pmWashington, D.C. Reagan-National
$492
Find similar
American Airlines
Mar 4
DCA9:56 amWashington, D.C. Reagan-National
11h 08m
2 stops
STI10:04 pmSantiago de los Caballeros
Mar 8
STI7:00 amSantiago de los Caballeros
16h 59m
1 stop
DCA11:59 pmWashington, D.C. Reagan-National
$509
Find similar

momondo Fare Finder

 
Customize your flight search to find flights from Washington, D.C. Reagan-National 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 9, 2025.
Use the filters below to find and compare flights from Washington, D.C. Reagan-National 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

DCA - STI

DCASTI

Washington, D.C. Reagan-National

Mon 12/8

6:00 am-2:13 am

1 stop19h 13m

Santiago de los Caballeros

Sun 2/8

5:10 am-5:35 pm

1 stop13h 25m

$421

Washington, D.C.Santiago de los Caballeros

DCA - STI

DCASTI

Washington, D.C. Reagan-National

Mon 11/24

6:59 pm-3:20 am

1 stop7h 21m

Santiago de los Caballeros

Wed 12/3

6:01 am-2:44 pm

1 stop9h 43m

$424

Washington, D.C.Santiago de los Caballeros

DCA - STI

DCASTI

Washington, D.C. Reagan-National

Tue 11/25

5:43 pm-3:36 am

1 stop8h 53m

Santiago de los Caballeros

Wed 12/3

6:01 am-6:04 pm

1 stop13h 03m

$427

Washington, D.C.Santiago de los Caballeros

DCA - STI

DCASTI

Washington, D.C. Reagan-National

Mon 12/8

6:00 am-2:13 am

1 stop19h 13m

Santiago de los Caballeros

Sat 2/7

4:10 am-10:47 pm

1 stop19h 37m

$436

Washington, D.C.Santiago de los Caballeros

DCA - STI

DCASTI

Washington, D.C. Reagan-National

Wed 3/11

6:59 am-8:03 pm

1 stop13h 04m

Santiago de los Caballeros

Mon 3/16

7:00 am-3:23 pm

1 stop8h 23m

$488

Washington, D.C.Santiago de los Caballeros

DCA - STI

DCASTI

Washington, D.C. Reagan-National

Wed 3/11

11:14 am-8:03 pm

2 stops8h 49m

Santiago de los Caballeros

Mon 3/16

7:00 am-9:55 pm

1 stop14h 55m

$492

Washington, D.C.Santiago de los Caballeros

DCA - STI

DCASTI

Washington, D.C. Reagan-National

Wed 3/4

9:56 am-10:04 pm

2 stops11h 08m

Santiago de los Caballeros

Sun 3/8

7:00 am-11:59 pm

1 stop16h 59m

$509

Washington, D.C.Santiago de los Caballeros

DCA - STI

DCASTI

Washington, D.C. Reagan-National

Mon 12/8

6:57 am-8:33 pm

2 stops12h 36m

Santiago de los Caballeros

Sun 2/8

6:00 am-5:46 pm

2 stops12h 46m

$517

Washington, D.C.Santiago de los Caballeros

DCA - STI

DCASTI

Washington, D.C. Reagan-National

Sun 11/23

8:50 am-7:36 pm

1 stop9h 46m

Santiago de los Caballeros

Thu 11/27

6:40 am-4:02 pm

1 stop10h 22m

$548

Washington, D.C.Santiago de los Caballeros

DCA - STI

DCASTI

Washington, D.C. Reagan-National

Mon 11/24

6:07 am-1:06 pm

1 stop5h 59m

Santiago de los Caballeros

Mon 12/1

9:01 pm-10:05 am

1 stop14h 04m

$568

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. Reagan-National 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. Reagan-National Airport is in March. Flight prices, which tend to average around $520, 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 March, then flying in January is also cheap. Prices for this month can be found on momondo for an average of $522.

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

The cheapest day to depart from Washington, D.C. Reagan-National 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. Reagan-National 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. Reagan-National 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.

How far in advance should I book a flight to Santiago de los Caballeros?

You are more likely to see cheaper flights to Santiago de los Caballeros from Washington, D.C. Reagan-National Airport when booking weeks ahead of your departure date. In general, you can expect to find flights to Santiago de los Caballeros for around $601 when searching weeks out. However, flight prices might be lower outside of this timeframe. For example, people recently found flights to Santiago de los Caballeros from Washington, D.C. Reagan-National Airport for as low as $431 on momondo.

How have Washington, D.C. Reagan-National Airport to Santiago de los Caballeros flight prices changed over time?

As of November 2025, prices for Washington, D.C. Reagan-National Airport to Santiago de los Caballeros flights are approximately 34% more expensive when compared to flights at the same time last year.

When to book flights from Washington, D.C. Reagan-National 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. Reagan-National 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. Reagan-National Airport to Santiago de los Caballeros (DCA to STI) flight deals and tips

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

Direct flights

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

    Santiago de los Caballeros is 1392.0 mi away from Washington, D.C. Reagan-National. Typically, this will take 5h 59m by plane in normal conditions.

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

    Prices for flights from Washington, D.C. Reagan-National Airport to Santiago de los Caballeros Airport were last updated today.

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

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

Best airlines flying from Washington, D.C. Reagan-National Airport to Santiago de los Caballeros

Compare and see reviews for airlines that fly from Washington, D.C. Reagan-National Airport to Santiago de los Caballeros with momondo
Airline
Rating
Free Cancellation
Price
JetBluePriceFrom $426Free CancellationRating
7.2
2,908 reviews
Search JetBlue flights
DeltaPriceFrom $483Free CancellationRating
7.9
8,004 reviews
Search Delta flights
American AirlinesPriceFrom $484Free CancellationRating
7.2
11,047 reviews
Search American Airlines flights
United AirlinesPriceFrom $518Free CancellationRating
7.4
9,012 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?

To find the flight that best suits your needs, momondo gathers a range of flights from a large pool of different airlines and agents; you can then use our insights and filters to find and book the right flight to Santiago de los Caballeros from Washington, D.C..

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

Yes. momondo allows you to filter the results for Washington, D.C. to Santiago de los Caballeros flights to just show those with 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?

Yes momondo offers price alerts on flights to Santiago de los Caballeros from Washington, D.C.. After performing a search on this page you should be able to see the price alert set up feature. Simply provide a valid email address and momondo will instantly alert you when prices change.

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