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Santiago de los Caballeros

$222+ Cheap flights from Washington 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 11/24. Fares are subject to change and may not be available on all flights or dates of travel.
SEA — STI
Dec 5 — Dec 121
Fri 12/5
Fri 12/12
1 adult, Economy
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Find flight deals from Washington to Santiago de los Caballeros

Cheapest flights from Washington to Santiago de los Caballeros
Explore the most affordable flight options available from Washington to Santiago de los Caballeros. Find the lowest fares from popular airlines and budget airlines, with prices last updated on November 5, 2025.

This Delta deal was found by Cheapflights users on 11/3. 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.
Mon 11/247:05 amPDX - STI
1 stop13h 54mDelta
Mon 12/86:35 amSTI - PDX
1 stop18h 05mDelta
Deal found 11/3$468
This American Airlines deal was found by Cheapflights users on 11/4. 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.
Fri 12/510:45 pmPDX - STI
1 stop17h 48mAmerican Airlines
Sat 12/136:00 amSTI - PDX
1 stop21h 52mAmerican Airlines
Deal found 11/4$481
This Delta deal was found by Cheapflights users on 11/4. 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.
Fri 12/55:30 amPDX - STI
2 stops15h 38mDelta
Sat 12/136:35 amSTI - PDX
2 stops15h 08mDelta
Deal found 11/4$517
This Delta deal was found by Cheapflights users on 11/5. 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.
Sat 11/2211:15 pmPDX - STI
2 stops16h 21mDelta
Sat 12/66:35 amSTI - PDX
1 stop18h 05mDelta
Deal found 11/5$523
This American Airlines deal was found by Cheapflights users on 11/4. 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.
Sat 11/2210:45 pmPDX - STI
1 stop12h 47mAmerican Airlines
Sat 12/64:32 pmSTI - PDX
1 stop11h 20mAmerican Airlines
Deal found 11/4$594
This American Airlines deal was found by Cheapflights users on 11/3. 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 11/247:40 amPDX - STI
2 stops11h 16mAmerican Airlines
Mon 12/84:32 pmSTI - PDX
1 stop11h 20mAmerican Airlines
Deal found 11/3$597
This United Airlines deal was found by Cheapflights users on 11/4. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 11/2811:12 pmPDX - STI
1 stop11h 41mUnited Airlines
Tue 12/96:00 amSTI - PDX
2 stops16h 45mUnited Airlines
Deal found 11/4$598
This American Airlines deal was found by Cheapflights users on 11/5. 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.
Sat 11/2210:45 pmPDX - STI
1 stop12h 47mAmerican Airlines
Mon 12/86:00 amSTI - PDX
1 stop21h 52mAmerican Airlines
Deal found 11/5$607
This American Airlines deal was found by Cheapflights users on 11/4. 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.
Fri 11/287:40 amPDX - STI
2 stops11h 12mAmerican Airlines
Tue 12/96:00 amSTI - PDX
2 stops18h 17mAmerican Airlines
Deal found 11/4$612
This American Airlines deal was found by Cheapflights users on 11/3. 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 12/2210:06 pmSEA - STI
1 stop18h 58mAmerican Airlines
Fri 1/96:00 amSTI - SEA
2 stops13h 34mAmerican Airlines
Deal found 11/3$1,078
This American Airlines deal was found by Cheapflights users on 11/4. 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.
Wed 12/1712:25 amSEA - STI
2 stops13h 02mAmerican Airlines
Fri 1/96:00 amSTI - SEA
2 stops15h 45mAmerican Airlines
Deal found 11/4$1,141
This American Airlines deal was found by Cheapflights users on 11/3. 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 12/1812:13 amSEA - STI
2 stops13h 14mAmerican Airlines
Thu 12/256:57 amSTI - SEA
1 stop20h 47mAmerican Airlines
Deal found 11/3$1,263

Cheap flight deals from Washington to Santiago de los Caballeros

Keep the following information in mind while searching for Washington to Santiago de los Caballeros flight deals. Data was last updated November 5, 2025.

Most accurate provider

eDreams
3 stars

Most trusted provider

eDreams
3 stars

Round-trip from

$450
(Delta)

One-way from

$222
(Delta)

Popular in

December

Cheapest in

January

Average price

$729
Provider with most accurate pricing for Seattle/Tacoma Intl-Santiago de los Caballeros flight deals.
Search Deals
Provider most trusted by Cheapflights users for Seattle/Tacoma Intl-Santiago de los Caballeros flights.
Search Deals
From Washington to Santiago de los Caballeros
Search Deals
One-way flight from Washington to Santiago de los Caballeros
Search Deals
Highest demand for flights based on searches. 5% potential increase in price ($42 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 5% potential price decrease ($41 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in November 2025
Search Deals

Cheapflights Fare Finder

 
Customize your flight search to find flights from Washington 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 November 5, 2025.
Use the filters below to find and compare flights from Washington to Santiago de los Caballeros that are best for you.

Fly from

Washington

Fly to

Santiago de los Caballeros

Route

Depart

Return

Price

PortlandSantiago de los Caballeros

PDX - STI

PDXSTI

Portland

Mon 11/24

7:05 am-12:59 am

1 stop13h 54m

Santiago de los Caballeros

Mon 12/8

6:35 am-8:40 pm

1 stop18h 05m

$468

PortlandSantiago de los Caballeros

PDX - STI

PDXSTI

Portland

Mon 3/9

7:00 am-11:27 pm

1 stop13h 27m

Santiago de los Caballeros

Wed 3/11

6:00 am-9:35 pm

1 stop18h 35m

$468

PortlandSantiago de los Caballeros

PDX - STI

PDXSTI

Portland

Mon 11/24

5:30 am-12:59 am

2 stops15h 29m

Santiago de los Caballeros

Fri 12/5

8:57 pm-1:14 pm

2 stops20h 17m

$472

SpokaneSantiago de los Caballeros

GEG - STI

GEGSTI

Spokane

Tue 3/3

5:15 am-12:53 am

2 stops15h 38m

Santiago de los Caballeros

Thu 3/5

6:35 am-12:06 am

2 stops21h 31m

$702

SeattleSantiago de los Caballeros

SEA - STI

SEASTI

Seattle/Tacoma Intl

Mon 12/22

10:06 pm-9:04 pm

1 stop18h 58m

Santiago de los Caballeros

Fri 1/9

6:00 am-11:42 pm

1 stop21h 42m

$1,095

SeattleSantiago de los Caballeros

SEA - STI

SEASTI

Seattle/Tacoma Intl

Wed 12/17

12:25 am-5:27 pm

2 stops13h 02m

Santiago de los Caballeros

Fri 1/9

6:00 am-5:45 pm

2 stops15h 45m

$1,141

SeattleSantiago de los Caballeros

SEA - STI

SEASTI

Seattle/Tacoma Intl

Thu 12/18

12:13 am-5:27 pm

2 stops13h 14m

Santiago de los Caballeros

Thu 12/25

6:57 am-5:09 pm

2 stops14h 12m

$1,306

PortlandSantiago de los Caballeros

PDX - STI

PDXSTI

Portland

Mon 11/24

5:30 am-12:59 am

2 stops15h 29m

$222

PortlandSantiago de los Caballeros

PDX - STI

PDXSTI

Portland

Mon 11/24

5:30 am-10:56 pm

2 stops13h 26m

$222

Flights are sorted by cheapest round-trip flights first.

Deals found on 11/3

Best time to book a flight from Washington to Santiago de los Caballeros

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

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

Currently, June is the cheapest month in which you can book a flight from State of Washington to Santiago de los Caballeros (average of $324). Flying from State of Washington to Santiago de los Caballeros in December is currently the most expensive (average of $605). 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 WA to STI?

Find hourly flight availability from Washington 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 November 5, 2025.

It’s optimal to fly from State of Washington to Santiago de los Caballeros in the morning. By choosing this option you can save up to 40% on the cost of your flight, compared to a flight at noon.

Related info for your journey

Find useful and relevant information for your journey from Washington 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?

    Most people fly into Santiago de los Caballeros (STI) if they book a flight to Santiago de los Caballeros from Washington. Santiago is conveniently located just 6.8 mi from Santiago de los Caballeros’s city center.

  • How long is the flight from State of Washington to Santiago de los Caballeros?

    A quick flight from State of Washington to Santiago de los Caballeros can take about 13h 54m. Delta provides one of the quickest options available for as low as $468. State of Washington and Santiago de los Caballeros are separated by a distance of 3447 mi. This flight may include one or multiple stops.

  • What are the most popular routes from State of Washington to Santiago de los Caballeros?

    When deciding which route to take from State of Washington to Santiago de los Caballeros consider Portland - Santiago de los Caballeros, Seattle/Tacoma Intl - Santiago de los Caballeros or Spokane - Santiago de los Caballeros as they are the most popular.

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

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

  • How can I find direct flights from Washington 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 Washington to Santiago de los Caballeros.

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

    Yes. Cheapflights offers flight deals from Washington 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 State of Washington to Santiago de los Caballeros?

    Currently, June is the cheapest month in which you can book a flight from State of Washington to Santiago de los Caballeros (average of $324). Flying from State of Washington to Santiago de los Caballeros in December is currently the most expensive (average of $605). 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

Browse thousands of different options on Cheapflights for your next trip

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Alternative routes for Washington 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 airline flying from Washington to Santiago de los Caballeros

Discover the top airline that operate flights from Washington 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 November 5, 2025.
AirlineCheapestAverageFlexibilityOn-time
American AirlinesCheapest$490Average$806FlexibilityNo cancel feeOn-time71%

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