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Santiago de los Caballeros

$475+ Cheap flights from Seattle (SEA) to Santiago de los Caballeros (STI)

This is the cheapest round-trip flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 5/31. Fares are subject to change and may not be available on all flights or dates of travel.
SEA — STI
Apr 22 — Apr 291
Tue 4/22
Tue 4/29
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 April 17, 2025.

Most accurate provider

AranGrant
3 stars

Most trusted provider

AranGrant
3 stars

Round-trip from

$475
(Delta)

Popular in

December

Cheapest in

January

Average price

$829
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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Highest demand for flights based on searches. 5% potential increase in price ($41 potential increase over avg. RT price).
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Cheapest flight prices on average. 6% potential price decrease ($42 potential savings vs. average RT price).
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Average for round-trip flights in April 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 April 17, 2025.

This Delta deal was found by Cheapflights users on 4/16. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 5/316:00 amSEA - STI
2 stops15h 14mDelta
Sat 6/76:11 amSTI - SEA
2 stops17h 08mDelta
Deal found 4/16$475
This American Airlines deal was found by Cheapflights users on 4/17. 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.
Tue 6/108:01 pmSEA - STI
1 stop22h 04mAmerican Airlines
Fri 6/137:05 amSTI - SEA
1 stop19h 42mAmerican Airlines
Deal found 4/17$521
This JetBlue deal was found by Cheapflights users on 4/16. 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 JetBlue is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 5/3111:38 amSEA - STI
1 stop18h 27mJetBlue
Sat 6/75:25 amSTI - SEA
1 stop17h 48mJetBlue
Deal found 4/16$546
This United Airlines deal was found by Cheapflights users on 4/17. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 4/247:17 pmSEA - STI
2 stops14h 40mUnited Airlines
Tue 5/66:00 amSTI - SEA
3 stops18h 31mUnited Airlines
Deal found 4/17$649

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 April 17, 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

Sat 5/31

6:00 am-12:14 am

2 stops15h 14m

Santiago de los Caballeros

Sat 6/7

6:11 am-8:19 pm

2 stops17h 08m

$475

SeattleSantiago de los Caballeros

SEA - STI

SEASTI

Seattle/Tacoma Intl

Tue 6/10

8:01 pm-9:05 pm

1 stop22h 04m

Santiago de los Caballeros

Fri 6/13

7:05 am-11:47 pm

1 stop19h 42m

$521

SeattleSantiago de los Caballeros

SEA - STI

SEASTI

Seattle/Tacoma Intl

Sat 5/31

11:38 am-9:05 am

1 stop18h 27m

Santiago de los Caballeros

Sat 6/7

5:25 am-8:13 pm

1 stop17h 48m

$546

SeattleSantiago de los Caballeros

SEA - STI

SEASTI

Seattle/Tacoma Intl

Fri 6/20

3:58 pm-10:29 am

2 stops15h 31m

Santiago de los Caballeros

Mon 6/30

11:29 am-3:03 pm

2 stops30h 34m

$795

SeattleSantiago de los Caballeros

SEA - STI

SEASTI

Seattle/Tacoma Intl

Sat 5/31

5:14 pm-3:12 pm

2 stops18h 58m

Santiago de los Caballeros

Sat 6/7

6:00 am-9:11 pm

3 stops18h 11m

$822

Flights are sorted by cheapest round-trip flights first.

Deals found on 4/16

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 April.
ProviderPrice AccuracyTrust Score*
AranGrantPrice Accuracy3 starsTrust Score*3 stars
FlightHubPrice Accuracy3 starsTrust Score*2 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 AranGrant to be most consistent on Cheapflights vs. AranGrant Users can find the same prices on Seattle-Santiago de los Caballeros flight deals on Cheapflights vs. AranGrant >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 AranGrant the most. AranGrant 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 April 17, 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 April 17, 2025.
See what other customers who have flown with Delta, United Airlines and JetBlue from Seattle to Santiago de los Caballeros have to say. Users have also rated airlines in terms of entertainment options, comfort, food, crew/service, and boarding process.
Delta
8.0
Very good
7,916 reviews

Boarding

8.2

Comfort

7.9

Overall

8.0

Food

7.3

Crew

8.5

Entertainment

7.9

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
7,916 reviews
Delta
8.0
Very good
7,916 reviews

Boarding

8.2

Comfort

7.9

Overall

8.0

Food

7.3

Crew

8.5

Entertainment

7.9

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
8,667 reviews
Delta
8.0
Very good
7,916 reviews

Boarding

8.2

Comfort

7.9

Overall

8.0

Food

7.3

Crew

8.5

Entertainment

7.9

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
2,926 reviews
Delta
8.0
Very good
7,916 reviews

Boarding

8.2

Comfort

7.9

Overall

8.0

Food

7.3

Crew

8.5

Entertainment

7.9

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
7,916 reviews

Boarding

8.2

Comfort

7.9

Overall

8.0

Food

7.3

Crew

8.5

Entertainment

7.9

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 $475 on this airline. Additional options worth looking into are American Airlines and JetBlue, starting at $521 and $546 round-trip. You may be able to fly from Seattle to Santiago de los Caballeros for 33% 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

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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 April 17, 2025.
AirlineCheapestAverageFlexibilityOn-time
DeltaCheapest$470Average$625FlexibilityNo cancel feeOn-timeN/A
American AirlinesCheapest$490Average$780FlexibilityNo cancel feeOn-time71%

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