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Santiago de los Caballeros

$174+ Cheap flights from District of Columbia 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 2/18. Fares are subject to change and may not be available on all flights or dates of travel.
IAD — STI
Jan 17 — Jan 241
Sat 1/17
Sat 1/24
1 adult, Economy
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Cheap flight deals from District of Columbia to Santiago de los Caballeros

Cheapest flights from District of Columbia to Santiago de los Caballeros
Explore the most affordable flight options available from District of Columbia to Santiago de los Caballeros. Find the lowest fares from popular airlines and budget airlines, with prices last updated on December 18, 2025.

This CheapOair deal was found by Cheapflights users on 12/17. 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 CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 12/286:15 amDCA - STI
1 stop18h 03mJetBlue
Fri 1/309:33 amSTI - DCA
1 stop6h 26mJetBlue
Deal found 12/17$567
This American Airlines deal was found by Cheapflights users on 12/18. 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.
Sun 12/286:00 amDCA - STI
1 stop14h 04mAmerican Airlines
Fri 1/306:00 amSTI - DCA
2 stops11h 18mAmerican Airlines
Deal found 12/18$627
This American Airlines deal was found by Cheapflights users on 12/17. 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.
Sun 12/286:35 amIAD - STI
2 stops13h 29mAmerican Airlines
Fri 1/306:00 amSTI - IAD
2 stops18h 12mAmerican Airlines
Deal found 12/17$627
This American Airlines deal was found by Cheapflights users on 12/16. 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.
Mon 12/297:59 pmDCA - STI
1 stop17h 25mAmerican Airlines
Sun 1/186:00 amSTI - DCA
1 stop16h 30mAmerican Airlines
Deal found 12/16$644
This American Airlines deal was found by Cheapflights users on 12/16. 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.
Sun 12/289:42 amDCA - STI
1 stop6h 45mAmerican Airlines
Sun 1/186:00 amSTI - DCA
1 stop16h 30mAmerican Airlines
Deal found 12/16$648
This CheapOair deal was found by Cheapflights users on 12/16. 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 CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 12/306:15 pmDCA - STI
1 stop13h 02mJetBlue
Sun 1/1111:47 amSTI - DCA
1 stop22h 28mJetBlue
Deal found 12/16$674
This Expedia deal was found by Cheapflights users on 12/15. 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.
Wed 12/1712:30 pmDCA - STI
2 stops12h 43mJetBlue
Wed 12/2411:25 amSTI - DCA
1 stop8h 10mJetBlue
Deal found 12/15$680
This CheapOair deal was found by Cheapflights users on 12/17. 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 CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 12/286:15 amDCA - STI
1 stop19h 39mJetBlue
Mon 1/1911:47 amSTI - DCA
1 stop22h 28mJetBlue
Deal found 12/17$691
This American Airlines deal was found by Cheapflights users on 12/16. 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.
Mon 12/294:29 pmIAD - STI
2 stops20h 55mAmerican Airlines
Mon 1/194:33 pmSTI - IAD
2 stops19h 25mAmerican Airlines
Deal found 12/16$717
This American Airlines deal was found by Cheapflights users on 12/17. 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.
Sun 12/286:35 amIAD - STI
2 stops9h 52mAmerican Airlines
Mon 1/194:33 pmSTI - IAD
2 stops19h 25mAmerican Airlines
Deal found 12/17$737
This Delta deal was found by Cheapflights users on 12/17. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 12/255:06 pmIAD - STI
1 stop6h 28mDelta
Sun 12/286:25 amSTI - IAD
1 stop11h 23mDelta
Deal found 12/17$778
This American Airlines deal was found by Cheapflights users on 12/16. 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.
Tue 12/306:35 amIAD - STI
2 stops13h 29mAmerican Airlines
Sun 1/114:33 pmSTI - IAD
2 stops21h 03mAmerican Airlines
Deal found 12/16$787

Find flight deals from District of Columbia to Santiago de los Caballeros

Keep the following information in mind while searching for District of Columbia to Santiago de los Caballeros flight deals. Data was last updated December 18, 2025.

Most accurate provider

eDreams
3 stars

Most trusted provider

eDreams
3 stars

Round-trip from

$334
(Expedia)

One-way from

$174
(SmartFares)

Popular in

December

Cheapest in

October

Average price

$672
Provider with most accurate pricing for Washington, D.C. (WAS)-Santiago de los Caballeros flight deals.
Search Deals
Provider most trusted by Cheapflights users for Washington, D.C. (WAS)-Santiago de los Caballeros flights.
Search Deals
From District of Columbia to Santiago de los Caballeros
Search Deals
One-way flight from District of Columbia to Santiago de los Caballeros
Search Deals
Highest demand for flights based on searches. 1% potential increase in price ($8 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 2% potential price decrease ($11 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in December 2025
Search Deals

Cheapflights Fare Finder

 
Customize your flight search to find flights from District of Columbia 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 December 18, 2025.
Use the filters below to find and compare flights from District of Columbia to Santiago de los Caballeros that are best for you.

Fly from

District of Columbia

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

Sat 1/31

3:55 pm-10:37 am

1 stop17h 42m

Santiago de los Caballeros

Sat 2/7

12:12 pm-10:31 pm

1 stop11h 19m

$334

Washington, D.C.Santiago de los Caballeros

DCA - STI

DCASTI

Washington, D.C. Reagan-National

Wed 2/18

6:20 pm-8:19 am

1 stop12h 59m

Santiago de los Caballeros

Wed 3/4

10:11 am-7:53 pm

1 stop10h 42m

$348

Washington, D.C.Santiago de los Caballeros

DCA - STI

DCASTI

Washington, D.C. Reagan-National

Mon 2/2

6:00 am-2:02 pm

1 stop7h 02m

Santiago de los Caballeros

Fri 2/6

12:12 pm-10:31 pm

1 stop11h 19m

$365

Washington, D.C.Santiago de los Caballeros

DCA - STI

DCASTI

Washington, D.C. Reagan-National

Mon 2/9

6:15 am-8:17 pm

1 stop13h 02m

Santiago de los Caballeros

Thu 2/12

9:29 am-5:59 pm

1 stop9h 30m

$365

Washington, D.C.Santiago de los Caballeros

DCA - STI

DCASTI

Washington, D.C. Reagan-National

Thu 3/5

6:00 am-3:44 am

1 stop20h 44m

Santiago de los Caballeros

Mon 3/9

9:12 am-1:10 pm

1 stop27h 58m

$410

Washington, D.C.Santiago de los Caballeros

DCA - STI

DCASTI

Washington, D.C. Reagan-National

Sat 1/3

6:00 am-10:15 am

1 stop27h 15m

Santiago de los Caballeros

Fri 1/16

12:12 pm-10:31 pm

1 stop11h 19m

$421

Washington, D.C.Santiago de los Caballeros

DCA - STI

DCASTI

Washington, D.C. Reagan-National

Wed 3/11

6:00 am-1:47 am

1 stop19h 47m

Santiago de los Caballeros

Mon 3/16

7:05 am-10:59 pm

1 stop15h 54m

$443

Washington, D.C.Santiago de los Caballeros

IAD - STI

IADSTI

Washington, D.C. Dulles Intl

Sun 2/22

1:18 am-2:56 pm

1 stop12h 38m

Santiago de los Caballeros

Mon 3/16

3:51 pm-12:32 am

1 stop8h 41m

$450

Washington, D.C.Santiago de los Caballeros

IAD - STI

IADSTI

Washington, D.C. Dulles Intl

Sat 1/3

9:40 am-2:42 am

2 stops16h 02m

Santiago de los Caballeros

Fri 1/16

4:40 pm-11:21 am

3 stops19h 41m

$467

Washington, D.C.Santiago de los Caballeros

IAD - STI

IADSTI

Washington, D.C. Dulles Intl

Wed 1/28

6:00 am-2:53 pm

1 stop7h 53m

Santiago de los Caballeros

Tue 2/3

12:52 pm-9:13 pm

1 stop9h 21m

$468

Flights are sorted by cheapest round-trip flights first.

Deals found on 12/17

Showing 1-10 of 35 results
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Best time to book a flight from District of Columbia to Santiago de los Caballeros

Have a flexible travel schedule? Discover the best time to fly to Santiago de los Caballeros from District of Columbia 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 District of Columbia to Santiago de los Caballeros

What is the cheapest month to book a flight from District of Columbia to Santiago de los Caballeros?

Currently, August is the cheapest month in which you can book a flight from District of Columbia to Santiago de los Caballeros (average of $214). Flying from District of Columbia to Santiago de los Caballeros in May is currently the most expensive (average of $346). 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 DC to STI?

Find hourly flight availability from District of Columbia 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 December 18, 2025.

It’s optimal to fly from District of Columbia to Santiago de los Caballeros at noon. By choosing this option you can save up to 29% on the cost of your flight, compared to a flight in the afternoon.

What is the cheapest day to fly from District of Columbia to Santiago de los Caballeros?

Use this chart to determine the cheapest time to fly round-trip from District of Columbia to Santiago de los Caballeros. Price data was last updated on December 16, 2024.

Travelers seeking maximum savings on their District of Columbia to Santiago de los Caballeros flight should consider departing on Friday at noon when fares are most often at their lowest. Tuesday at noon flights should be avoided if possible as fares are typically the most expensive at this time.

Related info for your journey

Find useful and relevant information for your journey from District of Columbia 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 District of Columbia?

    For a flight from District of Columbia to Santiago de los Caballeros, you will be flying into Santiago. Santiago de los Caballeros (STI) is just 6.8 mi from the center of the city.

  • How long is the flight from District of Columbia to Santiago de los Caballeros?

    For as low as $468, JetBlue can have you in Santiago de los Caballeros from District of Columbia in 7h 53m. The distance from District of Columbia to Santiago de los Caballeros is about 1410 mi. This flight may include one or multiple stops.

  • What are the cheapest airlines to fly from District of Columbia to Santiago de los Caballeros one-way?

    One-way options have recently been found by users for as low as $148 on JetBlue. Other airlines that offer cheap prices include American Airlines from $241 and Delta from $255 one-way.

  • Can I find deals for flights from District of Columbia to Santiago de los Caballeros that include hotel bookings?

    Yes. In addition to deals on District of Columbia to Santiago de los Caballeros flights, Cheapflights offers vacation packages that include both flights and hotel.

  • How can I find direct flights from District of Columbia 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 District of Columbia to Santiago de los Caballeros.

  • Can I find deals for business class flights from District of Columbia to Santiago de los Caballeros?

    Yes. Cheapflights offers flight deals from District of Columbia 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 District of Columbia to Santiago de los Caballeros?

    Currently, August is the cheapest month in which you can book a flight from District of Columbia to Santiago de los Caballeros (average of $214). Flying from District of Columbia to Santiago de los Caballeros in May is currently the most expensive (average of $346). 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.

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Alternative routes for District of Columbia to Santiago de los Caballeros

See prices for flight routes from nearby airports that may be better suited for you.
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Top 5 airlines flying from District of Columbia to Santiago de los Caballeros

Discover the top 5 airlines that operate flights from District of Columbia 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 December 18, 2025.
AirlineCheapestAverageFlexibilityOn-time
Spirit AirlinesCheapest$315Average$435FlexibilityNo cancel feeOn-time65%
JetBlueCheapest$417Average$551FlexibilityNo cancel feeOn-time62%
United AirlinesCheapest$467Average$673FlexibilityNo cancel feeOn-time69%
American AirlinesCheapest$476Average$651FlexibilityNo cancel feeOn-time71%
DeltaCheapest$483Average$599FlexibilityNo cancel feeOn-timeN/A

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