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Santiago de los Caballeros

$224+ Cheap flights from Seattle (SEA) 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 5/12. Fares are subject to change and may not be available on all flights or dates of travel.
SEA — STI
Apr 2 — Apr 91
Wed 4/2
Wed 4/9
1 adult, Economy
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Cheap flight deals from Seattle to Santiago de los Caballeros

Discover tips and strategies to find the most affordable flight options for your journey from Seattle (SEA) 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 March 28, 2025.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$471
(Delta)

One-way from

$224
(Delta)

Popular in

December

Cheapest in

January

Average price

$570
Provider with most accurate pricing for Seattle/Tacoma Intl-Santiago de los Caballeros flight deals.
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Provider most trusted by Cheapflights users for Seattle/Tacoma Intl-Santiago de los Caballeros flights.
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From Seattle/Tacoma Intl to Santiago de los Caballeros
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One-way flight from Seattle/Tacoma Intl to Santiago de los Caballeros
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Highest demand for flights based on searches. 6% potential increase in price ($46 potential increase over avg. RT price).
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Cheapest flight prices on average. 6% potential price decrease ($43 potential savings vs. average RT price).
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Average for round-trip flights in March 2025
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Find flight deals from Seattle to Santiago de los Caballeros

Cheapest flights from Seattle to Santiago de los Caballeros
Explore the most affordable flight options available from Seattle to Santiago de los Caballeros. Find the lowest fares from popular airlines and budget airlines, with prices last updated on March 28, 2025.

This Delta deal was found by Cheapflights users on 3/28. 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 4/247:23 amSEA - STI
1 stop14h 04mDelta
Tue 5/61:24 pmSTI - SEA
1 stop12h 20mDelta
Deal found 3/28$471
This JetBlue Airways deal was found by Cheapflights users on 3/28. 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 Airways is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 4/2411:55 pmSEA - STI
1 stop14h 14mJetBlue
Wed 5/78:45 amSTI - SEA
1 stop15h 09mJetBlue
Deal found 3/28$551
This United deal was found by Cheapflights users on 3/28. 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 is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 4/246:15 amSEA - STI
2 stops16h 31mUnited Airlines
Wed 5/76:00 amSTI - SEA
3 stops18h 31mUnited Airlines
Deal found 3/28$565
This American Airlines deal was found by Cheapflights users on 3/26. 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 8/145:58 pmSEA - STI
2 stops15h 22mAmerican Airlines
Mon 8/258:15 amSTI - SEA
1 stop19h 13mAmerican Airlines
Deal found 3/26$577

Cheapflights Fare Finder

Customize your flight search to find flights from Seattle 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 March 28, 2025.
Use the filters below to find and compare flights from Seattle to Santiago de los Caballeros that are best for you.

Fly from

Seattle

Fly to

Santiago de los Caballeros

Route

Depart

Return

Price

SeattleSantiago de los Caballeros

SEA - STI

SEASTI

Seattle/Tacoma Intl

Thu 4/24

7:23 am-12:27 am

1 stop14h 04m

Santiago de los Caballeros

Tue 5/6

1:24 pm-10:44 pm

1 stop12h 20m

$471

SeattleSantiago de los Caballeros

SEA - STI

SEASTI

Seattle/Tacoma Intl

Thu 4/24

11:55 pm-5:09 pm

1 stop14h 14m

Santiago de los Caballeros

Wed 5/7

8:45 am-8:54 pm

1 stop15h 09m

$551

SeattleSantiago de los Caballeros

SEA - STI

SEASTI

Seattle/Tacoma Intl

Thu 4/24

6:15 am-1:46 am

2 stops16h 31m

Santiago de los Caballeros

Wed 5/7

6:00 am-9:31 pm

3 stops18h 31m

$565

SeattleSantiago de los Caballeros

SEA - STI

SEASTI

Seattle/Tacoma Intl

Thu 8/14

5:58 pm-12:20 pm

2 stops15h 22m

Santiago de los Caballeros

Mon 8/25

8:15 am-12:28 am

1 stop19h 13m

$577

SeattleSantiago de los Caballeros

SEA - STI

SEASTI

Seattle/Tacoma Intl

Mon 5/12

11:50 pm-5:50 pm

2 stops15h 00m

$224

SeattleSantiago de los Caballeros

SEA - STI

SEASTI

Seattle/Tacoma Intl

Sun 5/11

7:00 am-12:57 pm

3 stops26h 57m

$310

Flights are sorted by cheapest round-trip flights first.

Deals found on 3/28

Compare providers for flights from Seattle to Santiago de los Caballeros

Provider information is updated monthly. Please note that these providers often have deals for this flight, but the availability may vary on a day-by-day basis on Cheapflights.
Use the table below to compare price accuracy, trust ratings, and cancellation policies for each provider offering flight deals from Seattle to Santiago de los Caballeros in March.
ProviderPrice AccuracyTrust Score*
AranGrantPrice Accuracy3 starsTrust Score*1 star
FlightHubPrice Accuracy3 starsTrust Score*3 stars
eDreamsPrice Accuracy3 starsTrust Score*3 stars

*The Trust Score is based on feedback from users after their booking experience. It measures overall satisfaction, helping us identify issues like hidden fees, problems during the ticketing process, and the quality of customer service. This score is our best indicator of the provider's quality and reliability.

  • Most accurate provider: When it comes to deals on Seattle-Santiago de los Caballeros flights, users find the pricing of FlightHub to be most consistent on Cheapflights vs. FlightHub Users can find the same prices on Seattle-Santiago de los Caballeros flight deals on Cheapflights vs. FlightHub >95% of the time. Price accuracy is based on data collected from Seattle-Santiago de los Caballeros flight searches over the past month and is updated monthly.
  • Most trusted provider: When it comes to deals on Seattle-Santiago de los Caballeros flights, Cheapflights users trust FlightHub the most. FlightHub has received a user feedback score of 3 out of 3 stars (3 being the best), meaning they have been trusted the most by Cheapflights users looking for Seattle-Santiago de los Caballeros flight deals. Provider user feedback score is based on Cheapflights searches over the past month and is updated monthly.

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

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

What is the cheapest month to book a flight from Seattle to Santiago de los Caballeros?

Currently, May is the cheapest month in which you can book a flight from Seattle to Santiago de los Caballeros (average of $347). Flying from Seattle to Santiago de los Caballeros in July is currently the most expensive (average of $631). 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 SEA to STI?

Find hourly flight availability from Seattle 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 March 28, 2025.

It’s typically best to fly out from Seattle to Santiago de los Caballeros in the morning. Doing so could potentially save you 19% on the flight price compared to flying at noon, which is usually more expensive.

Rainfall in Santiago de los Caballeros by month

Plan your trip to Santiago de los Caballeros by taking into account the average rainfall totals by month.

In terms of precipitation, rainfall in Santiago de los Caballeros ranges from 3.0 - 11.6 inches per month. December is typically the wettest month, when rainfall can reach 11.6 in. July is typically the driest time to visit Santiago de los Caballeros when rainfall is around 3.0 in.

Temperature in Santiago de los Caballeros by month

Plan your trip to Santiago de los Caballeros by taking into account the average temperature totals by month.

If weather is an important factor for your trip to Santiago de los Caballeros, use this chart to help with planning. For those seeking warmer temperatures, June is the ideal time of year to visit, when temperatures reach an average of 80.6 F. Travelers looking to avoid the cold should look outside of January, when temperatures are typically at their lowest (around 73.4 F).

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 March 28, 2025.
Delta
8.0
Very good
7,897 reviews

Comfort

8.0

Crew

8.5

Food

7.3

Entertainment

7.9

Boarding

8.2

Overall

8.0

Reviews

1 / 20
10.0
Excellent

Aaron,Oct 2024

LAX - LHR

This was a flight operated by Virgin Atlantic in their Upper Class cabin. Overall, an outstanding experience.
Delta
8.0
Very good
7,897 reviews
Delta
8.0
Very good
7,897 reviews

Comfort

8.0

Crew

8.5

Food

7.3

Entertainment

7.9

Boarding

8.2

Overall

8.0

Reviews

1 / 20
10.0
Excellent

Aaron,Oct 2024

LAX - LHR

This was a flight operated by Virgin Atlantic in their Upper Class cabin. Overall, an outstanding experience.
United Airlines
7.4
Good
8,603 reviews
Delta
8.0
Very good
7,897 reviews

Comfort

8.0

Crew

8.5

Food

7.3

Entertainment

7.9

Boarding

8.2

Overall

8.0

Reviews

1 / 20
10.0
Excellent

Aaron,Oct 2024

LAX - LHR

This was a flight operated by Virgin Atlantic in their Upper Class cabin. Overall, an outstanding experience.
JetBlue
7.3
Good
2,923 reviews
Delta
8.0
Very good
7,897 reviews

Comfort

8.0

Crew

8.5

Food

7.3

Entertainment

7.9

Boarding

8.2

Overall

8.0

Reviews

1 / 20
10.0
Excellent

Aaron,Oct 2024

LAX - LHR

This was a flight operated by Virgin Atlantic in their Upper Class cabin. Overall, an outstanding experience.
American Airlines
7.2
Good
10,000 reviews
Delta
8.0
Very good
7,897 reviews

Comfort

8.0

Crew

8.5

Food

7.3

Entertainment

7.9

Boarding

8.2

Overall

8.0

Reviews

1 / 20
10.0
Excellent

Aaron,Oct 2024

LAX - LHR

This was a flight operated by Virgin Atlantic in their Upper Class cabin. Overall, an outstanding experience.

Related info for your journey

Find useful and relevant information for your journey from Seattle 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 are the cheapest airlines flying from Seattle to Santiago de los Caballeros round-trip?

    Our cheapest airline available from Seattle to Santiago de los Caballeros is Delta. Our recent data shows that you can find tickets from as low as $471 on this airline. Additional options worth looking into are JetBlue and United Airlines, starting at $551 and $565 round-trip. You may be able to fly from Seattle to Santiago de los Caballeros for 32% less than the average price by searching for these airlines.

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

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

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

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

    Yes. Cheapflights offers flight deals from Seattle 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 Seattle to Santiago de los Caballeros?

    Currently, May is the cheapest month in which you can book a flight from Seattle to Santiago de los Caballeros (average of $347). Flying from Seattle to Santiago de los Caballeros in July is currently the most expensive (average of $631). 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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Top 2 airlines flying from Seattle to Santiago de los Caballeros

Discover the top 2 airlines that operate flights from Seattle 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 March 28, 2025.
AirlineCheapestAverageFlexibilityOn-time
DeltaCheapest$486Average$625FlexibilityNo cancel feeOn-timeN/A
American AirlinesCheapest$490Average$730FlexibilityNo cancel feeOn-time71%
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