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$142+ Cheap flights from Washington 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 8/17. Fares are subject to change and may not be available on all flights or dates of travel.
SEA — SJO
Apr 29 — May 61
Tue 4/29
Tue 5/6
1 adult, Economy
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Cheap flight deals from Washington to Costa Rica

Keep the following information in mind while searching for Washington to Costa Rica flight deals. Data was last updated April 24, 2025.

Most accurate provider

AranGrant
3 stars

Most trusted provider

AranGrant
3 stars

Round-trip from

$316
(American Airlines)

One-way from

$142
(American Airlines)

Popular in

December

Cheapest in

May

Average price

$725
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 Washington to Costa Rica
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One-way flight from Washington to Costa Rica
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Highest demand for flights based on searches. 6% potential increase in price ($48 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 April 2025
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Find flight deals from Washington to Costa Rica

Cheapest flights from Washington to Costa Rica
Explore the most affordable flight options available from Washington to Costa Rica. Find the lowest fares from popular airlines and budget airlines, with prices last updated on April 24, 2025.

This American Airlines deal was found by Cheapflights users on 4/22. 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 8/146:10 amGEG - SJO
1 stop10h 35mAmerican Airlines
Thu 8/217:40 amSJO - GEG
1 stop13h 47mAmerican Airlines
Deal found 4/22$316
This Alaska Airlines deal was found by Cheapflights users on 4/23. 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.
Fri 8/87:52 pmPSC - SJO
2 stops26h 38mAlaska Airlines
Thu 8/1412:50 amSJO - PSC
2 stops34h 59mAlaska Airlines
Deal found 4/23$363
This Alaska Airlines deal was found by Cheapflights users on 4/22. 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.
Sat 5/316:00 amSEA - SJO
1 stop16h 46mAlaska Airlines
Wed 6/41:06 amSJO - SEA
1 stop16h 47mAlaska Airlines
Deal found 4/22$398
This American Airlines deal was found by Cheapflights users on 4/22. 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 9/125:40 amSEA - SJO
1 stop10h 50mAmerican Airlines
Sat 9/207:35 amSJO - SEA
2 stops13h 33mAmerican Airlines
Deal found 4/22$406
This United Airlines deal was found by Cheapflights users on 4/23. 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 8/81:36 pmPSC - SJO
2 stops21h 50mUnited Airlines
Fri 8/158:45 amSJO - PSC
1 stop15h 08mUnited Airlines
Deal found 4/23$410
This Alaska Airlines deal was found by Cheapflights users on 4/23. 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.
Mon 8/1112:31 pmPDX - LIR
1 stop16h 49mAlaska Airlines
Tue 8/194:58 pmLIR - PDX
1 stop17h 27mAlaska Airlines
Deal found 4/23$415
This Kiwi.com deal was found by Cheapflights users on 4/22. 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.
Thu 6/512:18 pmSEA - SJO
2 stops21h 09mMultiple Airlines
Wed 6/1112:50 amSJO - SEA
1 stop23h 09mMultiple Airlines
Deal found 4/22$419
This Delta deal was found by Cheapflights users on 4/22. 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 12/46:00 amPDX - SJO
2 stops14h 15mDelta
Mon 12/82:17 pmSJO - PDX
2 stops20h 47mDelta
Deal found 4/22$423
This United Airlines deal was found by Cheapflights users on 4/23. 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.
Tue 5/273:42 pmPDX - SJO
1 stop14h 33mUnited Airlines
Sun 6/18:45 amSJO - PDX
1 stop25h 12mUnited Airlines
Deal found 4/23$424
This United Airlines deal was found by Cheapflights users on 4/23. 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 7/45:30 amGEG - SJO
2 stops27h 41mUnited Airlines
Tue 7/225:30 amSJO - GEG
2 stops18h 38mUnited Airlines
Deal found 4/23$425
This Alaska Airlines deal was found by Cheapflights users on 4/22. 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.
Fri 5/3010:30 amPDX - SJO
1 stop12h 16mAlaska Airlines
Sat 5/311:06 amSJO - PDX
2 stops30h 04mAlaska Airlines
Deal found 4/22$425
This Priceline deal was found by Cheapflights users on 4/22. 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 Priceline is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 5/305:40 pmPDX - SJO
2 stops16h 53mSpirit Airlines
Mon 6/212:28 pmSJO - PDX
2 stops25h 14mSpirit Airlines
Deal found 4/22$434

Cheapflights Fare Finder

Customize your flight search to find flights from Washington 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 April 24, 2025.
Use the filters below to find and compare flights from Washington to Costa Rica that are best for you.

Fly from

Washington

Fly to

Costa Rica

Route

Depart

Return

Price

SpokaneSan José

GEG - SJO

GEGSJO

Spokane

Thu 8/14

6:10 am-5:45 pm

1 stop10h 35m

San José Juan Santamaria Intl

Thu 8/21

7:40 am-8:27 pm

1 stop13h 47m

$316

PascoSan José

PSC - SJO

PSCSJO

Pasco Tri Cities

Fri 8/8

7:52 pm-11:30 pm

2 stops26h 38m

San José Juan Santamaria Intl

Thu 8/14

12:50 am-10:49 am

2 stops34h 59m

$363

SeattleSan José

SEA - SJO

SEASJO

Seattle/Tacoma Intl

Sat 5/31

6:00 am-11:46 pm

1 stop16h 46m

San José Juan Santamaria Intl

Wed 6/4

1:06 am-4:53 pm

1 stop16h 47m

$398

PascoSan José

PSC - SJO

PSCSJO

Pasco Tri Cities

Fri 8/8

1:36 pm-12:26 pm

2 stops21h 50m

San José Juan Santamaria Intl

Fri 8/15

5:30 am-10:53 pm

2 stops18h 23m

$410

PortlandLiberia

PDX - LIR

PDXLIR

Portland

Mon 8/11

12:31 pm-6:20 am

1 stop16h 49m

Liberia

Tue 8/19

4:58 pm-9:25 am

1 stop17h 27m

$415

SeattleSan José

SEA - SJO

SEASJO

Seattle/Tacoma Intl

Thu 6/5

12:18 pm-10:27 am

2 stops21h 09m

San José Juan Santamaria Intl

Wed 6/11

12:50 am-10:59 pm

1 stop23h 09m

$419

PortlandSan José

PDX - SJO

PDXSJO

Portland

Tue 5/27

3:42 pm-7:15 am

1 stop14h 33m

San José Juan Santamaria Intl

Sun 6/1

8:45 am-8:57 am

1 stop25h 12m

$424

SpokaneSan José

GEG - SJO

GEGSJO

Spokane

Fri 7/4

5:30 am-10:11 am

2 stops27h 41m

San José Juan Santamaria Intl

Tue 7/22

5:30 am-11:08 pm

2 stops18h 38m

$425

PortlandSan José

PDX - SJO

PDXSJO

Portland

Fri 5/30

10:30 am-11:46 pm

1 stop12h 16m

San José Juan Santamaria Intl

Sat 5/31

1:06 am-6:10 am

2 stops30h 04m

$425

SeattleSan José

SEA - SJO

SEASJO

Seattle/Tacoma Intl

Thu 6/5

5:32 am-10:04 pm

1 stop15h 32m

San José Juan Santamaria Intl

Thu 6/12

6:10 am-11:47 pm

1 stop18h 37m

$429

Flights are sorted by cheapest round-trip flights first.

Deals found on 4/22

Showing 1-10 of 60 results
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Best time to book a flight from Washington to Costa Rica

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

What is the cheapest month to book a flight from State of Washington to Costa Rica?

Currently, September is the cheapest month in which you can book a flight from State of Washington to Costa Rica (average of $398). Flying from State of Washington 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 WA to CR?

Find hourly flight availability from Washington 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 April 24, 2025.

When flying from State of Washington to Costa Rica, the time of day you decide to fly out makes little to no difference towards the overall price you’ll pay on tickets.

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 April 24, 2025.
Read reviews from past customers who have flown Alaska Airlines, Southwest and Delta from Washington to Costa Rica. You can also see how each airline compares in terms of entertainment options, comfort, food, crew/service, and boarding process.
Alaska Airlines
8.0
Very good
9,918 reviews

Food

7.1

Comfort

7.9

Boarding

8.2

Entertainment

7.1

Crew

8.5

Overall

8.0

Reviews

1 / 20
4.0
Okay

Anonymous,Apr 2025

LAS - STS

flight was delayed both ways even tho the weather was clear >
Alaska Airlines
8.0
Very good
9,918 reviews
Alaska Airlines
8.0
Very good
9,918 reviews

Food

7.1

Comfort

7.9

Boarding

8.2

Entertainment

7.1

Crew

8.5

Overall

8.0

Reviews

1 / 20
4.0
Okay

Anonymous,Apr 2025

LAS - STS

flight was delayed both ways even tho the weather was clear >
Southwest
8.0
Very good
4,286 reviews
Alaska Airlines
8.0
Very good
9,918 reviews

Food

7.1

Comfort

7.9

Boarding

8.2

Entertainment

7.1

Crew

8.5

Overall

8.0

Reviews

1 / 20
4.0
Okay

Anonymous,Apr 2025

LAS - STS

flight was delayed both ways even tho the weather was clear >
Delta
8.0
Very good
7,920 reviews
Alaska Airlines
8.0
Very good
9,918 reviews

Food

7.1

Comfort

7.9

Boarding

8.2

Entertainment

7.1

Crew

8.5

Overall

8.0

Reviews

1 / 20
4.0
Okay

Anonymous,Apr 2025

LAS - STS

flight was delayed both ways even tho the weather was clear >
Copa Airlines
7.6
Good
1,411 reviews
Alaska Airlines
8.0
Very good
9,918 reviews

Food

7.1

Comfort

7.9

Boarding

8.2

Entertainment

7.1

Crew

8.5

Overall

8.0

Reviews

1 / 20
4.0
Okay

Anonymous,Apr 2025

LAS - STS

flight was delayed both ways even tho the weather was clear >
SWISS
7.5
Good
1,582 reviews
Alaska Airlines
8.0
Very good
9,918 reviews

Food

7.1

Comfort

7.9

Boarding

8.2

Entertainment

7.1

Crew

8.5

Overall

8.0

Reviews

1 / 20
4.0
Okay

Anonymous,Apr 2025

LAS - STS

flight was delayed both ways even tho the weather was clear >

Related info for your journey

Find useful and relevant information for your journey from Washington 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 are the cheapest airlines to fly from State of Washington to Costa Rica one-way?

    To fly one-way, consider booking your trip with American Airlines, which is currently one of the cheapest options available, starting at $142. Alaska Airlines flights start at $157 while deals on Delta start at $182 one-way.

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

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

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

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

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

    Yes. Cheapflights offers flight deals from Washington 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 State of Washington to Costa Rica?

    Currently, September is the cheapest month in which you can book a flight from State of Washington to Costa Rica (average of $398). Flying from State of Washington 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 Washington to Costa Rica

See prices for flight routes from nearby airports that may be better suited for you.
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Top 9 airlines flying from Washington to Costa Rica

Discover the top 9 airlines that operate flights from Washington 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 April 24, 2025.
AirlineCheapestAverageFlexibilityOn-time
AviancaCheapest$164Average$192FlexibilityNo cancel feeOn-time71%
Spirit AirlinesCheapest$275Average$390FlexibilityNo cancel feeOn-time65%
American AirlinesCheapest$386Average$648FlexibilityNo cancel feeOn-time71%
DeltaCheapest$390Average$671FlexibilityNo cancel feeOn-timeN/A
Alaska AirlinesCheapest$428Average$634FlexibilityNo cancel feeOn-time75%
SouthwestCheapest$462Average$655FlexibilityNo cancel feeOn-time63%
United AirlinesCheapest$491Average$816FlexibilityNo cancel feeOn-time69%
Copa AirlinesCheapest$528Average$805FlexibilityNo cancel feeOn-time70%
AeromexicoCheapest$709Average$912FlexibilityNo cancel feeOn-timeN/A

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