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$149+ Cheap flights from Seattle (SEA) to Costa Rica

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 4/9. Fares are subject to change and may not be available on all flights or dates of travel.
SEA — SJO
Feb 25 — Mar 41
Tue 2/25
Tue 3/4
1 adult, Economy
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Cheap flight deals from Seattle to Costa Rica

Keep the following information in mind while searching for Seattle to Costa Rica flight deals. Data was last updated February 20, 2025.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$499
(American Airlines)

One-way from

$149
(FlightHub)

Popular in

December

Cheapest in

May

Average price

$685

Good one-way deal

$355 or less
Provider with most accurate pricing for Seattle/Tacoma Intl-San José Juan Santamaria Intl flight deals.
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Provider most trusted by Cheapflights users for Seattle/Tacoma Intl-San José Juan Santamaria Intl flights.
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From Seattle/Tacoma Intl to Costa Rica
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One-way flight from Seattle/Tacoma Intl to Costa Rica
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Highest demand for flights based on searches. 7% potential increase in price ($53 potential increase over avg. RT price).
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Cheapest flight prices on average. 3% potential price decrease ($23 potential savings vs. average RT price).
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Average for round-trip flights in February 2025
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Price to beat on a one-way flight from Seattle/Tacoma Intl to Costa Rica.
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Find flight deals from Seattle to Costa Rica

Cheapest flights from Seattle to Costa Rica
Explore the most affordable flight options available from Seattle to Costa Rica. Find the lowest fares from popular airlines and budget airlines, with prices last updated on February 20, 2025.

This Kiwi.com deal was found by Cheapflights users on 2/19. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 3/2311:35 pmSEA - SJO
1 stop10h 46mMultiple Airlines
Tue 3/2512:26 pmSJO - SEA
2 stops21h 17mMultiple Airlines
Deal found 2/19$500
This Mytrip deal was found by Cheapflights users on 2/20. 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 Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 4/2212:30 pmSEA - SJO
2 stops21h 48mSpirit Airlines
Mon 4/2812:55 amSJO - SEA
2 stops35h 40mSpirit Airlines
Deal found 2/20$502
This American Airlines deal was found by Cheapflights users on 2/20. 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 3/1111:59 pmSEA - SJO
2 stops12h 21mAmerican Airlines
Wed 3/196:05 amSJO - SEA
1 stop18h 21mAmerican Airlines
Deal found 2/20$511
This Delta deal was found by Cheapflights users on 2/20. 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 3/2411:30 pmSEA - SJO
1 stop11h 26mDelta
Thu 3/277:25 amSJO - SEA
1 stop14h 21mDelta
Deal found 2/20$521
This United Airlines deal was found by Cheapflights users on 2/20. 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.
Wed 3/196:15 amSEA - SJO
2 stops13h 40mUnited Airlines
Thu 3/275:30 amSJO - SEA
2 stops20h 25mUnited Airlines
Deal found 2/20$550
This Alaska Airlines deal was found by Cheapflights users on 2/20. 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 Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 6/47:00 amSEA - SJO
1 stop15h 46mAlaska Airlines
Tue 6/101:06 amSJO - SEA
1 stop18h 21mAlaska Airlines
Deal found 2/20$553
This American Airlines deal was found by Cheapflights users on 2/19. 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 3/235:30 pmSEA - LIR
1 stop16h 43mAmerican Airlines
Wed 4/22:11 pmLIR - SEA
2 stops20h 22mAmerican Airlines
Deal found 2/19$558
This Alaska Airlines deal was found by Cheapflights users on 2/18. 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 Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 4/85:59 pmSEA - LIR
1 stop11h 37mAlaska Airlines
Wed 4/166:06 pmLIR - SEA
1 stop16h 49mAlaska Airlines
Deal found 2/18$563
This Air Canada deal was found by Cheapflights users on 2/18. 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 Air Canada is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 4/86:05 amSEA - LIR
1 stop30h 05mAir Canada
Thu 4/172:30 pmLIR - SEA
1 stop31h 56mAir Canada
Deal found 2/18$595
This Kiwi.com deal was found by Cheapflights users on 2/18. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 4/911:30 amSEA - LIR
2 stops17h 37mMultiple Airlines
Sun 4/132:55 pmLIR - SEA
1 stop19h 09mMultiple Airlines
Deal found 2/18$610
This United Airlines deal was found by Cheapflights users on 2/19. 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 4/107:17 pmSEA - LIR
2 stops15h 53mUnited Airlines
Thu 4/173:25 pmLIR - SEA
2 stops19h 22mUnited Airlines
Deal found 2/19$611
This Southwest deal was found by Cheapflights users on 2/20. 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 Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 2/215:35 pmSEA - SJO
2 stops18h 10mSouthwest
Fri 2/289:55 amSJO - SEA
2 stops16h 30mSouthwest
Deal found 2/20$647

Find flights from Seattle to Costa Rica within your budget

Customize your flight search to find flights from Seattle to Costa Rica 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 February 20, 2025.

Fly from

Seattle

Fly to

Costa Rica

Route

Depart

Return

Price

SeattleSan José

SEA - SJO

SEASJO

Seattle/Tacoma Intl

Sun 3/23

11:35 pm-11:21 am

1 stop10h 46m

San José Juan Santamaria Intl

Tue 3/25

12:26 pm-8:43 am

2 stops21h 17m

$500

SeattleSan José

SEA - SJO

SEASJO

Seattle/Tacoma Intl

Tue 4/22

12:30 pm-11:18 am

2 stops21h 48m

San José Juan Santamaria Intl

Mon 4/28

12:55 am-11:35 am

2 stops35h 40m

$502

SeattleSan José

SEA - SJO

SEASJO

Seattle/Tacoma Intl

Tue 3/11

11:59 pm-1:20 pm

2 stops12h 21m

San José Juan Santamaria Intl

Wed 3/19

6:05 am-11:26 pm

1 stop18h 21m

$511

SeattleSan José

SEA - SJO

SEASJO

Seattle/Tacoma Intl

Mon 3/24

11:30 pm-11:56 am

1 stop11h 26m

San José Juan Santamaria Intl

Thu 3/27

7:25 am-8:46 pm

1 stop14h 21m

$521

SeattleSan José

SEA - SJO

SEASJO

Seattle/Tacoma Intl

Wed 3/19

6:15 am-8:55 pm

2 stops13h 40m

San José Juan Santamaria Intl

Thu 3/27

5:30 am-10:49 pm

1 stop18h 19m

$550

SeattleLiberia

SEA - LIR

SEALIR

Seattle/Tacoma Intl

Sun 3/23

5:30 pm-11:13 am

1 stop16h 43m

Liberia

Wed 4/2

2:11 pm-9:33 am

2 stops20h 22m

$558

SeattleLiberia

SEA - LIR

SEALIR

Seattle/Tacoma Intl

Tue 4/8

5:59 pm-6:36 am

1 stop11h 37m

Liberia

Wed 4/16

6:06 pm-9:55 am

1 stop16h 49m

$563

SeattleSan José

SEA - SJO

SEASJO

Seattle/Tacoma Intl

Tue 3/11

9:51 am-10:59 pm

2 stops12h 08m

San José Juan Santamaria Intl

Tue 3/18

1:22 am-2:53 pm

1 stop14h 31m

$571

SeattleLiberia

SEA - LIR

SEALIR

Seattle/Tacoma Intl

Tue 4/8

5:45 am-1:10 pm

2 stops30h 25m

Liberia

Thu 4/17

2:30 pm-9:26 pm

1 stop31h 56m

$595

SeattleLiberia

SEA - LIR

SEALIR

Seattle/Tacoma Intl

Wed 4/9

11:30 am-6:07 am

2 stops17h 37m

Liberia

Sun 4/13

2:55 pm-9:04 am

1 stop19h 09m

$610

Flights are sorted by cheapest round-trip flights first.

Deals found on 2/19

Showing 1-10 of 30 results
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Best time to book a flight from Seattle to Costa Rica

Have a flexible travel schedule? Discover the best time to fly to Costa Rica 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.

Travel insights for flights from Seattle to Costa Rica

Get recent, data-driven insights about flights from Seattle to Costa Rica including ideal travel times, pricing trends, and more.

What is the cheapest month to book a flight from Seattle to Costa Rica?

Currently, September is the cheapest month in which you can book a flight from Seattle to Costa Rica (average of $398). Flying from Seattle to Costa Rica in March is currently the most expensive (average of $555). 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 CR?

Find hourly flight availability from Seattle to Costa Rica. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated February 20, 2025.

Unlike at noon, when flights are generally more expensive, you can save up to 72% on flights from Seattle to Costa Rica by exploring options for tickets in the morning.

What is the cheapest day to fly from Seattle to Costa Rica?

Use this chart to determine the cheapest time to fly round-trip from Seattle to Costa Rica. Price data was last updated on December 16, 2024.

Travelers seeking maximum savings on their Seattle to Costa Rica flight should consider departing on Saturday mornings 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.

Rainfall in Costa Rica by month

Plan your trip to Costa Rica by taking into account the average rainfall totals by month.

In terms of precipitation, rainfall in Costa Rica ranges from 0.0 - 11.8 inches per month. September is typically the wettest month, when rainfall can reach 11.8 in. February is typically the driest time to visit Costa Rica when rainfall is around 0.0 in.

Temperature in Costa Rica by month

Plan your trip to Costa Rica by taking into account the average temperature totals by month.

If weather is an important factor for your trip to Costa Rica, use this chart to help with planning. For those seeking warmer temperatures, April is the ideal time of year to visit, when temperatures reach an average of 69.8 F. Travelers looking to avoid the cold should look outside of January, when temperatures are typically at their lowest (around 64.4 F).

Reviews of airlines servicing Costa Rica

Get insights into the airlines that provide service to Costa Rica. 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 Costa Rica. Reviews last updated February 20, 2025.
See what other customers who have flown with Southwest, Delta and Alaska Airlines from Seattle to Costa Rica have to say. You can also see how each airline compares in terms of entertainment options, comfort, food, crew/service, and boarding process.
Southwest
8.1
Very good
4,411 reviews

Comfort

8.1

Overall

8.1

Crew

8.7

Food

7.1

Boarding

8.2

Entertainment

7.6

Reviews

1 / 20

2.0
Mediocre

Anonymous,Feb 2025

MCO - STL

Cancelled at last minute, SWA unable to assist in formulating alternate plans. Wound up renting a car and driving 13 hours to beat bad weather forecast at home. Not SWA’s fault that there was significant bad weather across the country.

Southwest
8.1
Very good
4,411 reviews
Southwest
8.1
Very good
4,411 reviews

Comfort

8.1

Overall

8.1

Crew

8.7

Food

7.1

Boarding

8.2

Entertainment

7.6

Reviews

1 / 20

2.0
Mediocre

Anonymous,Feb 2025

MCO - STL

Cancelled at last minute, SWA unable to assist in formulating alternate plans. Wound up renting a car and driving 13 hours to beat bad weather forecast at home. Not SWA’s fault that there was significant bad weather across the country.

Delta
8.0
Very good
8,220 reviews
Southwest
8.1
Very good
4,411 reviews

Comfort

8.1

Overall

8.1

Crew

8.7

Food

7.1

Boarding

8.2

Entertainment

7.6

Reviews

1 / 20

2.0
Mediocre

Anonymous,Feb 2025

MCO - STL

Cancelled at last minute, SWA unable to assist in formulating alternate plans. Wound up renting a car and driving 13 hours to beat bad weather forecast at home. Not SWA’s fault that there was significant bad weather across the country.

Alaska Airlines
8.0
Very good
9,692 reviews
Southwest
8.1
Very good
4,411 reviews

Comfort

8.1

Overall

8.1

Crew

8.7

Food

7.1

Boarding

8.2

Entertainment

7.6

Reviews

1 / 20

2.0
Mediocre

Anonymous,Feb 2025

MCO - STL

Cancelled at last minute, SWA unable to assist in formulating alternate plans. Wound up renting a car and driving 13 hours to beat bad weather forecast at home. Not SWA’s fault that there was significant bad weather across the country.

KLM
7.8
Good
1,333 reviews
Southwest
8.1
Very good
4,411 reviews

Comfort

8.1

Overall

8.1

Crew

8.7

Food

7.1

Boarding

8.2

Entertainment

7.6

Reviews

1 / 20

2.0
Mediocre

Anonymous,Feb 2025

MCO - STL

Cancelled at last minute, SWA unable to assist in formulating alternate plans. Wound up renting a car and driving 13 hours to beat bad weather forecast at home. Not SWA’s fault that there was significant bad weather across the country.

Copa Airlines
7.6
Good
1,510 reviews
Southwest
8.1
Very good
4,411 reviews

Comfort

8.1

Overall

8.1

Crew

8.7

Food

7.1

Boarding

8.2

Entertainment

7.6

Reviews

1 / 20

2.0
Mediocre

Anonymous,Feb 2025

MCO - STL

Cancelled at last minute, SWA unable to assist in formulating alternate plans. Wound up renting a car and driving 13 hours to beat bad weather forecast at home. Not SWA’s fault that there was significant bad weather across the country.

Related info for your journey

Find useful and relevant information for your journey from Seattle to Costa Rica. 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 from for flights from Seattle to Costa Rica?

    For a flight from Seattle to Costa Rica, you will be flying from Seattle/Tacoma Intl. Seattle/Tacoma Intl (SEA) is just 11.4 mi from the center of the city.

  • What are the cheapest airlines to fly from Seattle to Costa Rica one-way?

    For one-way options, check prices for Spirit Airlines. According to our data, you can fly for as low as $149. Users have also found prices from $162 and $209 on American Airlines and Delta, respectively.

  • Can I find deals for flights from Seattle to Costa Rica that include hotel bookings?

    Yes. In addition to deals on Seattle to Costa Rica flights, Cheapflights offers vacation packages that include both flights and hotel.

  • How can I find direct flights from Seattle to Costa Rica?

    After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Seattle to Costa Rica.

  • Can I find deals for business class flights from Seattle to Costa Rica?

    Yes. Cheapflights offers flight deals from Seattle to Costa Rica 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 Costa Rica?

    Currently, September is the cheapest month in which you can book a flight from Seattle to Costa Rica (average of $398). Flying from Seattle to Costa Rica in March is currently the most expensive (average of $555). 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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Alternative routes for Seattle to Costa Rica

See prices for flight routes from nearby airports that may be better suited for you.
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Top 8 airlines flying from Seattle to Costa Rica

Discover the top 8 airlines that operate flights from Seattle to Costa Rica. 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 February 20, 2025.
AirlineCheapestAverageFlexibilityOn-time
Spirit AirlinesCheapest$254Average$355FlexibilityNo cancel feeOn-time65%
DeltaCheapest$370Average$655FlexibilityNo cancel feeOn-timeN/A
Alaska AirlinesCheapest$414Average$677FlexibilityNo cancel feeOn-time75%
American AirlinesCheapest$432Average$651FlexibilityNo cancel feeOn-time71%
United AirlinesCheapest$485Average$745FlexibilityNo cancel feeOn-time69%
SouthwestCheapest$520Average$637FlexibilityNo cancel feeOn-time63%
Copa AirlinesCheapest$538Average$805FlexibilityNo cancel feeOn-time70%
AeromexicoCheapest$728Average$977FlexibilityNo cancel feeOn-timeN/A
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