Santiago de los Caballeros

$273+ Cheap flights from Reagan-National (DCA) to Santiago de los Caballeros (STI)

This is the cheapest one-way flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 8/22. Fares are subject to change and may not be available on all flights or dates of travel.
DCA — STI
Aug 18 — Aug 251
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Cheapflights Tip: The best prices from Washington, D.C. Reagan-National to Santiago de los Caballeros are usually found in September or March, booked 27 days in advance, depart on a Sunday or Friday and return on a Saturday

Cheap flight deals from Reagan-National to Santiago de los Caballeros

Discover tips and strategies to find the most affordable flight options for your journey from Reagan-National (DCA) to Santiago de los Caballeros (STI). Learn about various techniques such as flexible date searches, comparing prices across and setting up price alerts. Use these methods to find the cheapest flights available for your travel needs. Data last updated August 13, 2025.

Round-trip from

$437
(JetBlue)

One-way from

$273
(JetBlue)

Popular in

December

Cheapest in

September

Average price

$631
From Washington, D.C. Reagan-National to Santiago de los Caballeros
One-way flight from Washington, D.C. Reagan-National to Santiago de los Caballeros
Highest demand for flights based on searches. 7% potential increase in price ($48 potential increase over avg. RT price).
Cheapest flight prices on average. 5% potential price decrease ($31 potential savings vs. average RT price).
Average for round-trip flights in August 2025

Find flight deals from Reagan-National to Santiago de los Caballeros

Cheapest flights from Reagan-National to Santiago de los Caballeros
Explore the most affordable flight options available from Reagan-National to Santiago de los Caballeros. Find the lowest fares from popular airlines and budget airlines, with prices last updated on August 13, 2025.

This JetBlue deal was found by Cheapflights users on 8/12. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure JetBlue is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 11/136:15 pmDCA - STI
1 stop13h 04mJetBlue
Tue 11/189:29 amSTI - DCA
1 stop8h 33mJetBlue
Deal found 8/12$437
This JetBlue deal was found by Cheapflights users on 8/11. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure JetBlue is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 9/185:42 pmDCA - STI
1 stop8h 39mJetBlue
Thu 9/2510:10 amSTI - DCA
1 stop8h 06mJetBlue
Deal found 8/11$441
This Expedia deal was found by Cheapflights users on 8/12. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Expedia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 9/254:00 pmDCA - STI
1 stop16h 59mJetBlue
Mon 9/295:15 amSTI - DCA
1 stop14h 05mJetBlue
Deal found 8/12$446
This Expedia deal was found by Cheapflights users on 8/13. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Expedia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 9/126:19 amDCA - STI
1 stop11h 45mJetBlue
Fri 9/199:55 amSTI - DCA
1 stop13h 01mJetBlue
Deal found 8/13$447
This Expedia deal was found by Cheapflights users on 8/10. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Expedia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 11/66:24 amDCA - STI
1 stop8h 14mJetBlue
Sun 11/94:41 amSTI - DCA
1 stop11h 09mJetBlue
Deal found 8/10$449
This Expedia deal was found by Cheapflights users on 8/13. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Expedia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 9/126:19 amDCA - STI
1 stop11h 45mJetBlue
Mon 9/223:20 amSTI - DCA
1 stop16h 02mJetBlue
Deal found 8/13$452
This Priceline deal was found by Cheapflights users on 8/11. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Priceline is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 9/45:42 pmDCA - STI
1 stop6h 42mJetBlue
Wed 9/1010:10 amSTI - DCA
1 stop8h 06mJetBlue
Deal found 8/11$456
This Expedia deal was found by Cheapflights users on 8/13. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Expedia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 9/276:19 amDCA - STI
1 stop11h 45mJetBlue
Fri 10/33:20 amSTI - DCA
1 stop19h 36mJetBlue
Deal found 8/13$461
This JetBlue deal was found by Cheapflights users on 8/12. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure JetBlue is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 9/45:42 pmDCA - STI
1 stop6h 42mJetBlue
Mon 9/155:15 amSTI - DCA
1 stop14h 05mJetBlue
Deal found 8/12$462
This American Airlines deal was found by Cheapflights users on 8/11. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 9/185:00 amDCA - STI
2 stops7h 27mAmerican Airlines
Thu 9/251:29 pmSTI - DCA
2 stops18h 01mAmerican Airlines
Deal found 8/11$469
This JetBlue deal was found by Cheapflights users on 8/12. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure JetBlue is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 10/28:00 pmDCA - STI
1 stop12h 59mJetBlue
Sun 10/512:48 pmSTI - DCA
1 stop10h 08mJetBlue
Deal found 8/12$476

Cheapflights Fare Finder

 
Customize your flight search to find flights from Reagan-National 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, Cheapflights users made 2,558,603 searches. Data last updated August 13, 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

Reagan-National

Fly to

Santiago de los Caballeros

Route

Depart

Return

Price

Washington, D.C.Santiago de los Caballeros

DCA - STI

DCASTI

Washington, D.C. Reagan-National

Thu 11/13

6:15 pm-8:19 am

1 stop13h 04m

Santiago de los Caballeros

Tue 11/18

9:29 am-5:02 pm

1 stop8h 33m

$437

Washington, D.C.Santiago de los Caballeros

DCA - STI

DCASTI

Washington, D.C. Reagan-National

Mon 9/29

4:00 pm-8:59 am

1 stop16h 59m

Santiago de los Caballeros

Fri 10/3

3:30 pm-10:56 pm

1 stop7h 26m

$441

Washington, D.C.Santiago de los Caballeros

DCA - STI

DCASTI

Washington, D.C. Reagan-National

Tue 9/30

5:42 pm-2:21 am

1 stop8h 39m

Santiago de los Caballeros

Wed 10/8

10:10 am-6:56 pm

1 stop8h 46m

$441

Washington, D.C.Santiago de los Caballeros

DCA - STI

DCASTI

Washington, D.C. Reagan-National

Fri 9/12

6:19 am-6:04 pm

1 stop11h 45m

Santiago de los Caballeros

Tue 9/23

10:10 am-7:19 pm

1 stop9h 09m

$441

Washington, D.C.Santiago de los Caballeros

DCA - STI

DCASTI

Washington, D.C. Reagan-National

Thu 9/18

5:42 pm-2:21 am

1 stop8h 39m

Santiago de los Caballeros

Thu 9/25

10:10 am-6:16 pm

1 stop8h 06m

$441

Washington, D.C.Santiago de los Caballeros

DCA - STI

DCASTI

Washington, D.C. Reagan-National

Wed 11/19

6:15 pm-8:19 am

1 stop13h 04m

Santiago de los Caballeros

Mon 12/8

4:20 pm-10:54 pm

1 stop7h 34m

$443

Washington, D.C.Santiago de los Caballeros

DCA - STI

DCASTI

Washington, D.C. Reagan-National

Thu 9/25

4:00 pm-8:59 am

1 stop16h 59m

Santiago de los Caballeros

Mon 9/29

5:15 am-7:20 pm

1 stop14h 05m

$446

Washington, D.C.Santiago de los Caballeros

DCA - STI

DCASTI

Washington, D.C. Reagan-National

Sun 9/7

6:19 am-2:13 pm

1 stop7h 54m

Santiago de los Caballeros

Fri 9/12

2:00 pm-9:55 pm

1 stop7h 55m

$447

Washington, D.C.Santiago de los Caballeros

DCA - STI

DCASTI

Washington, D.C. Reagan-National

Fri 8/22

6:30 am-5:58 pm

1 stop11h 28m

$273

Washington, D.C.Santiago de los Caballeros

DCA - STI

DCASTI

Washington, D.C. Reagan-National

Fri 8/29

11:45 am-10:09 pm

1 stop10h 24m

$289

Flights are sorted by cheapest round-trip flights first.

Deals found on 8/10

Showing 1-10 of 13 results
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Best time to book a flight from Reagan-National to Santiago de los Caballeros

Have a flexible travel schedule? Discover the best time to fly to Santiago de los Caballeros from Reagan-National with our price prediction graph.
Estimated round-trip price
Rates are based on past data. Find the cheapest month and day to book your flight based on your travel requirements, then search for cheap deals.

Cheapflights Insights

Everything you need to know about your flight from Washington, D.C. Reagan-National Airport to Santiago de los Caballeros

How far ahead should I book a flight from Washington, D.C. Reagan-National Airport to Santiago de los Caballeros?

Use this chart to determine the optimal time to book a round-trip flight from Reagan-National to Santiago de los Caballeros. Price data was last updated on August 8, 2025.

To ensure you get the cheapest price possible for a flight from Washington, D.C. Reagan-National Airport to Santiago de los Caballeros, you should look to book at least 26 days in advance of your intended travel date. The price of your flight may increase if you delay and leave booking until a week or so before departure.

What is the cheapest month to book a flight from Washington, D.C. Reagan-National Airport to Santiago de los Caballeros?

Currently, May is the cheapest month in which you can book a flight from Washington, D.C. Reagan-National Airport to Santiago de los Caballeros (average of $347). Flying from Washington, D.C. Reagan-National Airport to Santiago de los Caballeros in July is currently the most expensive (average of $601). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

What is the cheapest time of day to fly from DCA to STI?

Find hourly flight availability from Reagan-National to Santiago de los Caballeros. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated August 13, 2025.

Unlike at noon, when flights are generally more expensive, you can save up to 21% on flights from Washington, D.C. Reagan-National Airport to Santiago de los Caballeros by exploring options for tickets in the morning.

Reviews of airlines servicing Santiago de los Caballeros

Get insights into the airlines that provide service to Santiago de los Caballeros. Read reviews, discover amenities, and learn about the overall travel experience offered by airlines. Use this information to make informed decisions when choosing an airline for your flight to Santiago de los Caballeros. Reviews last updated August 13, 2025.
Read reviews from past customers who have flown Delta, United Airlines, and American Airlines from Washington, D.C. Reagan-National Airport to Santiago de los Caballeros. Users can see the overall rating for each airline as well as how each is rated in terms of entertainment options, comfort, food, crew/service, and boarding process.
8.0
Very good

Entertainment

7.9

Crew

8.5

Food

7.3

Comfort

7.9

Boarding

8.2

Overall

8.0

Reviews

1 / 20
10.0
Excellent

Kim,May 2025

PIH - SLC

This trip was fine even with delay I had plenty of time to get connection flight!
8.0
Very good
8.0
Very good

Entertainment

7.9

Crew

8.5

Food

7.3

Comfort

7.9

Boarding

8.2

Overall

8.0

Reviews

1 / 20
10.0
Excellent

Kim,May 2025

PIH - SLC

This trip was fine even with delay I had plenty of time to get connection flight!
8.0
Very good

Entertainment

7.9

Crew

8.5

Food

7.3

Comfort

7.9

Boarding

8.2

Overall

8.0

Reviews

1 / 20
10.0
Excellent

Kim,May 2025

PIH - SLC

This trip was fine even with delay I had plenty of time to get connection flight!
8.0
Very good

Entertainment

7.9

Crew

8.5

Food

7.3

Comfort

7.9

Boarding

8.2

Overall

8.0

Reviews

1 / 20
10.0
Excellent

Kim,May 2025

PIH - SLC

This trip was fine even with delay I had plenty of time to get connection flight!
8.0
Very good

Entertainment

7.9

Crew

8.5

Food

7.3

Comfort

7.9

Boarding

8.2

Overall

8.0

Reviews

1 / 20
10.0
Excellent

Kim,May 2025

PIH - SLC

This trip was fine even with delay I had plenty of time to get connection flight!

Related info for your journey

Find useful and relevant information for your journey from Reagan-National to Santiago de los Caballeros. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.
  • What airport do you fly into for flights to Santiago de los Caballeros from Washington, D.C. Reagan-National?

    Most people fly into Santiago de los Caballeros (STI) if they book a flight to Santiago de los Caballeros from Washington, D.C. Reagan-National. On average, Santiago has 0 inbound flights from Washington, D.C. Reagan-National per day from 4 airlines. Santiago de los Caballeros is conveniently located just 6.8 mi from Santiago de los Caballeros’s city center.

  • What is the cheapest airline to fly from Washington, D.C. Reagan-National Airport to Santiago de los Caballeros round-trip?

    According to our current data, JetBlue ($437), offers the cheapest pricing from Washington, D.C. Reagan-National Airport to Santiago de los Caballeros. You may be able to fly from Washington, D.C. Reagan-National Airport to Santiago de los Caballeros for 29% less than the average price by searching for this airline.

  • Can I find deals for flights from Reagan-National to Santiago de los Caballeros that include hotel bookings?

    Yes. In addition to deals on Reagan-National to Santiago de los Caballeros flights, Cheapflights offers vacation packages that include both flights and hotel.

  • How can I find direct flights from Reagan-National to Santiago de los Caballeros?

    After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Reagan-National to Santiago de los Caballeros.

  • Can I find deals for business class flights from Reagan-National to Santiago de los Caballeros?

    Yes. Cheapflights offers flight deals from Reagan-National to Santiago de los Caballeros by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.

  • What is the cheapest month to book a flight from Washington, D.C. Reagan-National Airport to Santiago de los Caballeros?

    Currently, May is the cheapest month in which you can book a flight from Washington, D.C. Reagan-National Airport to Santiago de los Caballeros (average of $347). Flying from Washington, D.C. Reagan-National Airport to Santiago de los Caballeros in July is currently the most expensive (average of $601). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

See more FAQs

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Top 4 airlines flying from Reagan-National to Santiago de los Caballeros

Discover the top 4 airlines that operate flights from Reagan-National to Santiago de los Caballeros. Compare their services, reliability, and customer satisfaction ratings to choose the airline that best suits your travel preferences and needs. Over the last 7 days, Cheapflights users made 2,558,603 searches. Data last updated August 13, 2025.
AirlineCheapestAverageFlexibilityOn-time
JetBlueCheapest$427Average$575FlexibilityNo cancel feeOn-time62%
DeltaCheapest$483Average$599FlexibilityNo cancel feeOn-timeN/A
American AirlinesCheapest$484Average$674FlexibilityNo cancel feeOn-time71%
United AirlinesCheapest$518Average$754FlexibilityNo cancel feeOn-time69%

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