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Costa Rica

$141+ 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 8/11. Fares are subject to change and may not be available on all flights or dates of travel.
SEA — SJO
Jul 8 — Jul 151
Tue 7/8
Tue 7/15
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 July 3, 2025.

Round-trip from

$313
(Alaska Airlines)

One-way from

$141
(United Airlines)

Popular in

December

Cheapest in

May

Average price

$663
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. 7% potential increase in price ($52 potential increase over avg. RT price).
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Cheapest flight prices on average. 3% potential price decrease ($21 potential savings vs. average RT price).
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Average for round-trip flights in July 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 July 3, 2025.

This Alaska Airlines deal was found by Cheapflights users on 7/2. 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 8/119:30 pmPDX - LIR
1 stop17h 23mAlaska Airlines
Tue 8/194:58 pmLIR - PDX
1 stop17h 27mAlaska Airlines
Deal found 7/2$313
This United Airlines deal was found by Cheapflights users on 7/1. 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 8/126:43 pmPDX - LIR
2 stops16h 27mUnited Airlines
Thu 8/211:20 pmLIR - PDX
2 stops12h 25mUnited Airlines
Deal found 7/1$317
This Delta deal was found by Cheapflights users on 7/1. 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.
Wed 9/171:00 pmGEG - SJO
2 stops22h 08mDelta
Fri 9/261:35 pmSJO - GEG
2 stops25h 20mDelta
Deal found 7/1$320
This American Airlines deal was found by Cheapflights users on 7/2. 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.
Mon 10/272:55 pmPSC - SJO
2 stops26h 21mAmerican Airlines
Fri 10/316:44 amSJO - PSC
2 stops17h 48mAmerican Airlines
Deal found 7/2$320
This American Airlines deal was found by Cheapflights users on 7/1. 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 8/1211:59 pmPDX - LIR
1 stop12h 00mAmerican Airlines
Thu 8/212:00 pmLIR - PDX
1 stop21h 43mAmerican Airlines
Deal found 7/1$321
This American Airlines deal was found by Cheapflights users on 7/1. 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.
Wed 9/1712:35 pmGEG - SJO
1 stop28h 17mAmerican Airlines
Fri 9/267:27 amSJO - GEG
1 stop12h 12mAmerican Airlines
Deal found 7/1$324
This American Airlines deal was found by Cheapflights users on 7/1. 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.
Wed 10/155:29 amPDX - SJO
1 stop11h 47mAmerican Airlines
Tue 10/216:44 amSJO - PDX
1 stop16h 03mAmerican Airlines
Deal found 7/1$326
This Delta deal was found by Cheapflights users on 7/1. 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.
Tue 10/282:30 pmPDX - SJO
1 stop20h 18mDelta
Thu 11/132:17 pmSJO - PDX
2 stops20h 21mDelta
Deal found 7/1$340
This United Airlines deal was found by Cheapflights users on 7/2. 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 8/1512:54 pmPDX - SJO
1 stop8h 45mUnited Airlines
Fri 8/228:37 amSJO - PDX
1 stop15h 00mUnited Airlines
Deal found 7/2$351
This Avianca deal was found by Cheapflights users on 7/1. 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 Avianca is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 12/48:00 amSEA - SJO
1 stop17h 45mMultiple Airlines
Mon 12/85:00 pmSJO - SEA
1 stop18h 45mMultiple Airlines
Deal found 7/1$368
This Southwest deal was found by Cheapflights users on 7/1. 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.
Tue 7/229:10 pmSEA - SJO
2 stops14h 35mSouthwest
Sat 7/2612:00 pmSJO - SEA
1 stop13h 05mSouthwest
Deal found 7/1$381
This Alaska Airlines deal was found by Cheapflights users on 7/1. 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.
Thu 10/169:30 pmPDX - SJO
1 stop20h 30mAlaska Airlines
Thu 10/236:30 amSJO - PDX
1 stop17h 52mAlaska Airlines
Deal found 7/1$383

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 July 3, 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

PortlandLiberia

PDX - LIR

PDXLIR

Portland

Mon 8/11

9:30 pm-3:53 pm

1 stop17h 23m

Liberia

Tue 8/19

4:58 pm-9:25 am

1 stop17h 27m

$313

PortlandLiberia

PDX - LIR

PDXLIR

Portland

Tue 8/12

6:43 pm-12:10 pm

2 stops16h 27m

Liberia

Thu 8/21

1:20 pm-12:45 am

2 stops12h 25m

$317

SpokaneSan José

GEG - SJO

GEGSJO

Spokane

Wed 9/17

1:00 pm-12:08 pm

2 stops22h 08m

San José Juan Santamaria Intl

Fri 9/26

1:35 pm-1:55 pm

2 stops25h 20m

$320

PascoSan José

PSC - SJO

PSCSJO

Pasco Tri Cities

Mon 10/27

2:55 pm-6:16 pm

2 stops26h 21m

San José Juan Santamaria Intl

Fri 10/31

6:44 am-11:32 pm

2 stops17h 48m

$320

PortlandLiberia

PDX - LIR

PDXLIR

Portland

Tue 8/12

11:59 pm-12:59 pm

1 stop12h 00m

Liberia

Thu 8/21

2:00 pm-10:43 am

1 stop21h 43m

$321

SpokaneSan José

GEG - SJO

GEGSJO

Spokane

Wed 9/17

12:35 pm-5:52 pm

1 stop28h 17m

San José Juan Santamaria Intl

Fri 9/26

7:27 am-6:39 pm

1 stop12h 12m

$324

PortlandSan José

PDX - SJO

PDXSJO

Portland

Wed 10/15

5:29 am-6:16 pm

1 stop11h 47m

San José Juan Santamaria Intl

Tue 10/21

6:44 am-9:47 pm

1 stop16h 03m

$326

PortlandSan José

PDX - SJO

PDXSJO

Portland

Tue 10/28

2:30 pm-11:48 am

1 stop20h 18m

San José Juan Santamaria Intl

Fri 11/14

7:00 am-10:20 pm

2 stops17h 20m

$340

PortlandSan José

PDX - SJO

PDXSJO

Portland

Fri 8/15

12:54 pm-10:39 pm

1 stop8h 45m

San José Juan Santamaria Intl

Fri 8/22

8:37 am-10:37 pm

1 stop15h 00m

$351

SeattleSan José

SEA - SJO

SEASJO

Seattle/Tacoma Intl

Tue 7/22

9:10 pm-12:45 pm

2 stops14h 35m

San José Juan Santamaria Intl

Sat 7/26

12:00 pm-12:05 am

1 stop13h 05m

$381

Flights are sorted by cheapest round-trip flights first.

Deals found on 7/1

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 July 3, 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.

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 July 3, 2025.
See what other customers who have flown with Alaska Airlines, Southwest, and Delta from Washington to Costa Rica have to say. 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.
Alaska Airlines
8.0
Very good
10,000 reviews

Comfort

7.8

Entertainment

7.1

Boarding

8.1

Food

7.1

Overall

8.0

Crew

8.5

Reviews

1 / 20
10.0
Excellent

Surinder,May 2025

SEA - YYZ

My wife wanted the aile seat and I always prefer window seat. Luckily we both got the best seats we wanted. The plane was very nice and we enjoyed the best take off and the smooth landing at Toronto. All the services by the staff inside the aeroplane were very nice well appreciated. Thanks again and hope to see you soon.
Alaska Airlines
8.0
Very good
10,000 reviews
Alaska Airlines
8.0
Very good
10,000 reviews

Comfort

7.8

Entertainment

7.1

Boarding

8.1

Food

7.1

Overall

8.0

Crew

8.5

Reviews

1 / 20
10.0
Excellent

Surinder,May 2025

SEA - YYZ

My wife wanted the aile seat and I always prefer window seat. Luckily we both got the best seats we wanted. The plane was very nice and we enjoyed the best take off and the smooth landing at Toronto. All the services by the staff inside the aeroplane were very nice well appreciated. Thanks again and hope to see you soon.
Southwest
8.0
Very good
4,266 reviews
Alaska Airlines
8.0
Very good
10,000 reviews

Comfort

7.8

Entertainment

7.1

Boarding

8.1

Food

7.1

Overall

8.0

Crew

8.5

Reviews

1 / 20
10.0
Excellent

Surinder,May 2025

SEA - YYZ

My wife wanted the aile seat and I always prefer window seat. Luckily we both got the best seats we wanted. The plane was very nice and we enjoyed the best take off and the smooth landing at Toronto. All the services by the staff inside the aeroplane were very nice well appreciated. Thanks again and hope to see you soon.
Delta
8.0
Very good
7,982 reviews
Alaska Airlines
8.0
Very good
10,000 reviews

Comfort

7.8

Entertainment

7.1

Boarding

8.1

Food

7.1

Overall

8.0

Crew

8.5

Reviews

1 / 20
10.0
Excellent

Surinder,May 2025

SEA - YYZ

My wife wanted the aile seat and I always prefer window seat. Luckily we both got the best seats we wanted. The plane was very nice and we enjoyed the best take off and the smooth landing at Toronto. All the services by the staff inside the aeroplane were very nice well appreciated. Thanks again and hope to see you soon.
United Airlines
7.4
Good
8,861 reviews
Alaska Airlines
8.0
Very good
10,000 reviews

Comfort

7.8

Entertainment

7.1

Boarding

8.1

Food

7.1

Overall

8.0

Crew

8.5

Reviews

1 / 20
10.0
Excellent

Surinder,May 2025

SEA - YYZ

My wife wanted the aile seat and I always prefer window seat. Luckily we both got the best seats we wanted. The plane was very nice and we enjoyed the best take off and the smooth landing at Toronto. All the services by the staff inside the aeroplane were very nice well appreciated. Thanks again and hope to see you soon.
JetBlue
7.3
Good
2,916 reviews
Alaska Airlines
8.0
Very good
10,000 reviews

Comfort

7.8

Entertainment

7.1

Boarding

8.1

Food

7.1

Overall

8.0

Crew

8.5

Reviews

1 / 20
10.0
Excellent

Surinder,May 2025

SEA - YYZ

My wife wanted the aile seat and I always prefer window seat. Luckily we both got the best seats we wanted. The plane was very nice and we enjoyed the best take off and the smooth landing at Toronto. All the services by the staff inside the aeroplane were very nice well appreciated. Thanks again and hope to see you soon.

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 United Airlines, which is currently one of the cheapest options available, starting at $141. Delta flights start at $147 while deals on Alaska Airlines start at $161 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 July 3, 2025.
AirlineCheapestAverageFlexibilityOn-time
AviancaCheapest$152Average$217FlexibilityNo cancel feeOn-time71%
Spirit AirlinesCheapest$308Average$394FlexibilityNo cancel feeOn-time65%
DeltaCheapest$390Average$655FlexibilityNo cancel feeOn-timeN/A
American AirlinesCheapest$408Average$710FlexibilityNo cancel feeOn-time71%
United AirlinesCheapest$410Average$783FlexibilityNo cancel feeOn-time69%
Alaska AirlinesCheapest$428Average$626FlexibilityNo cancel feeOn-time75%
SouthwestCheapest$462Average$654FlexibilityNo cancel feeOn-time63%
Copa AirlinesCheapest$634Average$792FlexibilityNo cancel feeOn-time70%
AeromexicoCheapest$734Average$981FlexibilityNo cancel feeOn-timeN/A

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