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Cheap flights from Washington, D.C. Reagan-National Airport to Santiago de los Caballeros from $168

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 1/25. 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. Reagan-National Airport to Santiago de los Caballeros

Cheap round-trip flights

Enter your travel dates to find the best prices.
JetBlue Logo
6:30 pm - 10:37 am
DCA
-
STI
15h 07m1 stop
JetBlue Logo
12:12 pm - 7:18 pm
STI
-
DCA
8h 06m1 stop
$331JetBlue
Sun, Feb 1 - Fri, Feb 6
JetBlue Logo
6:30 pm - 10:37 am
DCA
-
STI
15h 07m1 stop
JetBlue Logo
9:30 am - 6:00 pm
STI
-
DCA
9h 30m1 stop
$337JetBlue
Sun, Jan 25 - Tue, Jan 27
JetBlue Logo
3:55 pm - 10:37 am
DCA
-
STI
17h 42m1 stop
JetBlue Logo
9:30 am - 2:59 pm
STI
-
DCA
6h 29m1 stop
$339JetBlue
Sat, Jan 24 - Tue, Jan 27
JetBlue Logo
5:20 pm - 10:37 am
DCA
-
STI
16h 17m2 stops
JetBlue Logo
9:25 am - 6:00 pm
STI
-
DCA
9h 35m1 stop
$351JetBlue
Sun, Feb 1 - Fri, Feb 6
JetBlue Logo
6:00 am - 8:20 pm
DCA
-
STI
13h 20m1 stop
JetBlue Logo
9:25 am - 6:00 pm
STI
-
DCA
9h 35m1 stop
$365JetBlue
Mon, Feb 2 - Fri, Feb 6
JetBlue Logo
6:00 am - 10:37 am
DCA
-
STI
27h 37m2 stops
JetBlue Logo
9:30 am - 2:59 pm
STI
-
DCA
6h 29m1 stop
$366JetBlue
Sat, Jan 24 - Tue, Jan 27
JetBlue Logo
3:59 pm - 9:01 am
DCA
-
STI
16h 02m1 stop
JetBlue Logo
10:11 am - 8:10 pm
STI
-
DCA
10h 59m1 stop
$369JetBlue
Sat, Feb 21 - Sat, Feb 28
JetBlue Logo
9:00 am - 8:15 pm
DCA
-
STI
10h 15m2 stops
JetBlue Logo
12:12 pm - 7:18 pm
STI
-
DCA
8h 06m1 stop
$372JetBlue
Sat, Jan 31 - Thu, Feb 5
JetBlue Logo
1:00 pm - 11:59 pm
DCA
-
STI
10h 59m1 stop
JetBlue Logo
10:40 am - 10:59 pm
STI
-
DCA
12h 19m1 stop
$382JetBlue
Wed, May 6 - Mon, May 11
JetBlue Logo
3:25 pm - 10:37 am
DCA
-
STI
18h 12m2 stops
JetBlue Logo
12:12 pm - 10:47 pm
STI
-
DCA
11h 35m2 stops
$383JetBlue
Sun, Feb 1 - Fri, Feb 6

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
Feb 1
DCA6:30 pmWashington, D.C. Reagan-National
15h 07m
1 stop
STI10:37 amSantiago de los Caballeros
Feb 6
STI12:12 pmSantiago de los Caballeros
8h 06m
1 stop
DCA7:18 pmWashington, D.C. Reagan-National
$331
Find similar
JetBlue
Jan 25
DCA6:30 pmWashington, D.C. Reagan-National
15h 07m
1 stop
STI10:37 amSantiago de los Caballeros
Jan 27
STI9:30 amSantiago de los Caballeros
9h 30m
1 stop
DCA6:00 pmWashington, D.C. Reagan-National
$337
Find similar
JetBlue
Jan 24
DCA3:55 pmWashington, D.C. Reagan-National
17h 42m
1 stop
STI10:37 amSantiago de los Caballeros
Jan 27
STI9:30 amSantiago de los Caballeros
6h 29m
1 stop
DCA2:59 pmWashington, D.C. Reagan-National
$339
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
May 6
DCA6:39 amWashington, D.C. Reagan-National
7h 41m
2 stops
STI2:20 pmSantiago de los Caballeros
May 11
STI3:35 pmSantiago de los Caballeros
8h 24m
1 stop
DCA11:59 pmWashington, D.C. Reagan-National
$492
Find similar
American Airlines
Feb 26
DCA5:00 amWashington, D.C. Reagan-National
7h 31m
2 stops
STI1:31 pmSantiago de los Caballeros
Mar 1
STI8:00 amSantiago de los Caballeros
16h 20m
1 stop
DCA11:20 pmWashington, D.C. Reagan-National
$497
Find similar
American Airlines
Dec 28
DCA7:00 amWashington, D.C. Reagan-National
6h 24m
1 stop
STI2:24 pmSantiago de los Caballeros
Jan 30
STI6:00 amSantiago de los Caballeros
11h 18m
2 stops
DCA4:18 pmWashington, D.C. Reagan-National
$627
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 December 23, 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

Sun 2/1

6:30 pm-10:37 am

1 stop15h 07m

Santiago de los Caballeros

Fri 2/6

12:12 pm-7:18 pm

1 stop8h 06m

$331

Washington, D.C.Santiago de los Caballeros

DCA - STI

DCASTI

Washington, D.C. Reagan-National

Sun 1/25

6:30 pm-10:37 am

1 stop15h 07m

Santiago de los Caballeros

Tue 1/27

9:30 am-6:00 pm

1 stop9h 30m

$337

Washington, D.C.Santiago de los Caballeros

DCA - STI

DCASTI

Washington, D.C. Reagan-National

Sat 1/24

3:55 pm-10:37 am

1 stop17h 42m

Santiago de los Caballeros

Tue 1/27

9:30 am-2:59 pm

1 stop6h 29m

$339

Washington, D.C.Santiago de los Caballeros

DCA - STI

DCASTI

Washington, D.C. Reagan-National

Sun 2/1

5:20 pm-10:37 am

2 stops16h 17m

Santiago de los Caballeros

Fri 2/6

9:25 am-6:00 pm

1 stop9h 35m

$351

Washington, D.C.Santiago de los Caballeros

DCA - STI

DCASTI

Washington, D.C. Reagan-National

Mon 2/2

6:00 am-8:20 pm

1 stop13h 20m

Santiago de los Caballeros

Fri 2/6

9:25 am-6:00 pm

1 stop9h 35m

$365

Washington, D.C.Santiago de los Caballeros

DCA - STI

DCASTI

Washington, D.C. Reagan-National

Sat 1/24

6:00 am-10:37 am

2 stops27h 37m

Santiago de los Caballeros

Tue 1/27

9:30 am-2:59 pm

1 stop6h 29m

$366

Washington, D.C.Santiago de los Caballeros

DCA - STI

DCASTI

Washington, D.C. Reagan-National

Sat 2/21

3:59 pm-9:01 am

1 stop16h 02m

Santiago de los Caballeros

Sat 2/28

10:11 am-8:10 pm

1 stop10h 59m

$369

Washington, D.C.Santiago de los Caballeros

DCA - STI

DCASTI

Washington, D.C. Reagan-National

Sat 1/31

9:00 am-8:15 pm

2 stops10h 15m

Santiago de los Caballeros

Thu 2/5

12:12 pm-7:18 pm

1 stop8h 06m

$372

Washington, D.C.Santiago de los Caballeros

DCA - STI

DCASTI

Washington, D.C. Reagan-National

Wed 5/6

1:00 pm-11:59 pm

1 stop10h 59m

Santiago de los Caballeros

Mon 5/11

10:40 am-10:59 pm

1 stop12h 19m

$382

Washington, D.C.Santiago de los Caballeros

DCA - STI

DCASTI

Washington, D.C. Reagan-National

Sun 2/1

3:25 pm-10:37 am

2 stops18h 12m

Santiago de los Caballeros

Fri 2/6

12:12 pm-10:47 pm

2 stops11h 35m

$383

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 18 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. 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 November. Flight prices, which tend to average around $526, 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 January is also cheap. Prices for this month can be found on momondo for an average of $530.

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 $615 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 December 2025, prices for Washington, D.C. Reagan-National Airport to Santiago de los Caballeros flights are approximately 12% 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

Fastest flight time

10h 59m

Direct flights

None
The fastest flight from Washington, D.C. Reagan-National Airport to Santiago de los Caballeros takes 10h 59m
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.
Search flight deals

  • 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 10h 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 $417Free CancellationRating
7.2
2,898 reviews
Search JetBlue flights
DeltaPriceFrom $483Free CancellationRating
7.9
8,014 reviews
Search Delta flights
American AirlinesPriceFrom $484Free CancellationRating
7.2
11,050 reviews
Search American Airlines flights
United AirlinesPriceFrom $518Free CancellationRating
7.4
9,106 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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