What is the cheapest day to fly from Seattle to Santiago de los Caballeros?

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

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.

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).

What is the cheapest day to fly round-trip from Seattle to Santiago de los Caballeros?

Thursday flights are generally found to be more expensive for flights from Seattle to Santiago de los Caballeros. This shouldn’t discourage you from searching, as you can still find great deals by being flexible with your options. Use our search form to find deals on tickets to Santiago de los Caballeros.

What is the cheapest month to fly from Seattle to Santiago de los Caballeros?

January is one of the best times of the year to fly to Santiago de los Caballeros from Seattle. Prices for January average $753 per person but you can even find prices for as low as $492. The most expensive prices can be found in the month of December. Opting for a January flight can save you 80% on your journey compared to booking in December

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.

$471+ Flights from Seattle to Santiago de los Caballeros

Home Search by date Vacation packages Hotels Flight deals Car rental Travel tips & news

Find cheap flights from Seattle to Santiago de los Caballeros with Cheapflights

1. Tell us where you want to go

Enter your travel information like dates, passengers, trip type (one-way or round trip), and preferred cabin class then click “Find deals”

2. Select your favorite providers

We find the providers serving your travel needs. Choose up to four travel providers to compare side-by-side for flights, hotels, or car rentals.

3. Compare prices and book

Review each provider’s pricing and select the best option for you! Book through your favorite provider’s website for a seamless experience.

Cheap flight deals from Seattle to Santiago de los Caballeros

Round-trip from	$471 (Expedia)
Popular in	December
Cheapest in	January
Average price	$650

From Seattle/Tacoma Intl to Santiago de los Caballeros

Search Deals

Highest demand for flights based on searches. 14% potential increase in price ($125 potential increase over avg. RT price).

Search Deals

Cheapest flight prices on average. 7% potential price decrease ($55 potential savings vs. average RT price).

Search Deals

Average for round-trip flights in August 2025

Search Deals

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 August 14, 2025.

Tue 9/2311:59 pmSEA - STI

1 stop15h 05mJetBlue

Thu 10/2312:48 pmSTI - SEA

1 stop12h 22mJetBlue

Deal found 8/13

$471

Tue 9/235:43 pmSEA - STI

2 stops15h 44mAmerican Airlines

Thu 10/231:14 pmSTI - SEA

2 stops14h 13mAmerican Airlines

Deal found 8/13

$475

Tue 8/1211:25 pmSEA - STI

1 stop17h 09mJetBlue

Mon 9/291:12 pmSTI - SEA

1 stop12h 12mJetBlue

Deal found 8/12

$910

Tue 8/1211:05 pmSEA - STI

2 stops31h 10mMultiple Airlines

Mon 9/2912:10 pmSTI - SEA

1 stop13h 12mMultiple Airlines

Deal found 8/12

$1,216

Best flights from Seattle to Santiago de los Caballeros
Discover carefully curated flight deals from Seattle to Santiago de los Caballeros that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated August 14, 2025.

Tue 9/2311:59 pmSEA - STI

1 stop15h 05mJetBlue

Thu 10/2312:48 pmSTI - SEA

1 stop12h 22mJetBlue

Deal found 8/13

$471

Wed 1/219:55 pmSEA - STI

1 stop11h 13mDelta

Sun 2/16:35 amSTI - SEA

1 stop19h 41mDelta

Deal found 8/13

$473

Tue 9/235:43 pmSEA - STI

2 stops15h 44mAmerican Airlines

Thu 10/231:14 pmSTI - SEA

2 stops14h 13mAmerican Airlines

Deal found 8/13

$475

Wed 1/213:55 pmSEA - STI

2 stops17h 00mAmerican Airlines

Sun 2/14:35 pmSTI - SEA

2 stops22h 06mAmerican Airlines

Deal found 8/13

$605

Last-minute flights from Seattle to Santiago de los Caballeros
Discover last-minute flight deals from Seattle to Santiago de los Caballeros. Data last updated August 14, 2025 and is based on user searches.

Tue 9/2311:59 pmSEA - STI

1 stop15h 05mJetBlue

Thu 10/2312:48 pmSTI - SEA

1 stop12h 22mJetBlue

Deal found 8/13

$471

Tue 9/235:43 pmSEA - STI

2 stops15h 44mAmerican Airlines

Thu 10/231:14 pmSTI - SEA

2 stops14h 13mAmerican Airlines

Deal found 8/13

$475

Cheapflights Fare Finder

Use the filters below to find and compare flights from Seattle to Santiago de los Caballeros that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

SeattleSantiago de los Caballeros

SEA - STI

SEASTI

Seattle/Tacoma Intl

Tue 9/23

11:59 pm-6:04 pm

1 stop15h 05m

Santiago de los Caballeros

Thu 10/23

12:48 pm-10:10 pm

1 stop12h 22m

$471

SeattleSantiago de los Caballeros

SEA - STI

SEASTI

Seattle/Tacoma Intl

Wed 1/21

9:55 pm-1:08 pm

1 stop11h 13m

Santiago de los Caballeros

Sun 2/1

6:35 am-10:16 pm

1 stop19h 41m

$473

SeattleSantiago de los Caballeros

SEA - STI

SEASTI

Seattle/Tacoma Intl

Tue 9/23

5:43 pm-12:27 pm

2 stops15h 44m

Santiago de los Caballeros

Thu 10/23

1:14 pm-12:27 am

2 stops14h 13m

$475

SeattleSantiago de los Caballeros

SEA - STI

SEASTI

Seattle/Tacoma Intl

Wed 1/21

3:55 pm-12:55 pm

2 stops17h 00m

Santiago de los Caballeros

Sun 2/1

4:35 pm-10:41 am

2 stops22h 06m

$605

Flights are sorted by cheapest round-trip flights first.

Deals found on 8/13

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 $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 SEA to STI?

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.

Reviews of airlines servicing Santiago de los Caballeros

Read reviews from past customers who have flown Delta and American Airlines from Seattle 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.

Delta

8.0

Very good

7,980 reviews

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!

Delta

8.0

Very good

7,980 reviews

Delta

8.0

Very good

7,980 reviews

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!

American Airlines

7.2

Good

10,000 reviews

Delta

8.0

Very good

7,980 reviews

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

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 $470 on this airline. An additional option worth looking into is American Airlines, starting at $490. You may be able to fly from Seattle to Santiago de los Caballeros for 37% 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 $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

Browse thousands of different options on Cheapflights for your next trip

Top 2 airlines flying from Seattle to Santiago de los Caballeros

Airline	Cheapest	Average	Flexibility	On-time
Delta	Cheapest$470	Average$625	FlexibilityNo cancel fee	On-timeN/A
American Airlines	Cheapest$490	Average$769	FlexibilityNo cancel fee	On-time71%

100% Free

Cheapflights is completely free to use, so you can start saving the moment you arrive.

Book with Flexibility

Our users can plan ahead with confidence and find flights with no change fees

Travel Smart

Millions of people come to us for their flight needs every year. We help make travel planning easy by providing useful insights and data-driven graphs that can inform your decisions.

$471+ 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 9/23. Fares are subject to change and may not be available on all flights or dates of travel.

Find cheap flights from Seattle to Santiago de los Caballeros with Cheapflights

1. Tell us where you want to go

2. Select your favorite providers

3. Compare prices and book

Cheap flight deals from Seattle to Santiago de los Caballeros

Round-trip from

Popular in

Cheapest in

Average price

Find flight deals from Seattle to Santiago de los Caballeros

Cheapest flights from Seattle to Santiago de los CaballerosExplore 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 August 14, 2025.

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 August 14, 2025.

Cheapflights Fare Finder

Use the filters below to find and compare flights from Seattle to Santiago de los Caballeros that are best for you.

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.

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?

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 August 14, 2025.

Reviews of airlines servicing Santiago de los Caballeros

Read reviews from past customers who have flown Delta and American Airlines from Seattle 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.

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?

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

How can I 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?

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

Browse thousands of different options on Cheapflights for your next trip

Toggle through the tabs below to find thousands of options on Cheapflights for your next trip.

Alternative routes for Seattle to Santiago de los Caballeros

See prices for flight routes from nearby airports that may be better suited for you.

Top 2 airlines flying from Seattle to Santiago de los Caballeros

100% Free

Book with Flexibility

Travel Smart

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 August 14, 2025.