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Costa Rica

$176+ 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 9/14. Fares are subject to change and may not be available on all flights or dates of travel.
SEA — SJO
Jun 14 — Jun 211
Sun 6/14
Sun 6/21
1 adult, Economy
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Cheap 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 May 15, 2026.

This Avianca deal was found by Cheapflights users on 5/13. 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.
Tue 10/277:03 am
PDX
-
SJO
2 stops15h 12m
Multiple Airlines
Tue 11/36:00 am
SJO
-
PDX
2 stops19h 10m
Multiple Airlines
Deal found 5/13$376
This Avianca deal was found by Cheapflights users on 5/13. 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.
Mon 9/287:50 pm
PDX
-
SJO
2 stops11h 55m
Multiple Airlines
Thu 10/15:45 am
SJO
-
PDX
2 stops15h 51m
Multiple Airlines
Deal found 5/13$378
This Avianca deal was found by Cheapflights users on 5/12. 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.
Sat 5/2310:30 am
PDX
-
SJO
2 stops11h 45m
Multiple Airlines
Sat 5/305:45 am
SJO
-
PDX
2 stops17h 30m
Multiple Airlines
Deal found 5/12$393
This Avianca deal was found by Cheapflights users on 5/13. 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.
Sat 12/57:00 am
PDX
-
SJO
2 stops14h 15m
Multiple Airlines
Sun 12/135:00 am
SJO
-
PDX
2 stops13h 27m
Multiple Airlines
Deal found 5/13$395
This Avianca deal was found by Cheapflights users on 5/14. 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.
Mon 11/307:40 pm
PDX
-
SJO
2 stops13h 45m
Multiple Airlines
Wed 12/95:00 am
SJO
-
PDX
2 stops13h 27m
Multiple Airlines
Deal found 5/14$396
This Avianca deal was found by Cheapflights users on 5/11. 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.
Sat 12/57:00 am
PDX
-
SJO
2 stops14h 15m
Multiple Airlines
Sat 12/126:00 am
SJO
-
PDX
2 stops16h 31m
Multiple Airlines
Deal found 5/11$408
This FlightHub deal was found by Cheapflights users on 5/12. 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 FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 9/17:00 am
PDX
-
SJO
2 stops15h 15m
Multiple Airlines
Mon 9/145:05 am
SJO
-
PDX
2 stops16h 31m
Multiple Airlines
Deal found 5/12$415
This FlightHub deal was found by Cheapflights users on 5/13. 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 FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 5/229:26 pm
PDX
-
SJO
2 stops24h 49m
Multiple Airlines
Sat 5/305:45 am
SJO
-
PDX
2 stops17h 30m
Multiple Airlines
Deal found 5/13$416
This Trip.com deal was found by Cheapflights users on 5/12. 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 Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 5/1610:30 am
PDX
-
SJO
2 stops11h 45m
Multiple Airlines
Mon 5/185:05 am
SJO
-
PDX
2 stops16h 30m
Multiple Airlines
Deal found 5/12$417
This Alaska Airlines deal was found by Cheapflights users on 5/10. 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 5/2812:53 pm
PDX
-
SJO
1 stop9h 40m
Alaska Airlines
Fri 6/512:53 am
SJO
-
PDX
1 stop13h 38m
Alaska Airlines
Deal found 5/10$418
This FlightHub deal was found by Cheapflights users on 5/10. 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 FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 5/229:26 pm
PDX
-
SJO
2 stops24h 49m
Multiple Airlines
Tue 5/265:45 am
SJO
-
PDX
2 stops29h 02m
Multiple Airlines
Deal found 5/10$423
This American Airlines deal was found by Cheapflights users on 5/13. 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 10/1812:45 pm
GEG
-
SJO
2 stops21h 20m
American Airlines
Fri 10/231:05 pm
SJO
-
GEG
2 stops23h 53m
American Airlines
Deal found 5/13$435

Find 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 May 15, 2026.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$376
(Avianca)

One-way from

$176
(Avianca)

Popular in

April

Cheapest in

October

Average price

$630
Provider with most accurate pricing for Seattle/Tacoma Intl-San José Juan Santamaria Intl flight deals.
Search Deals
Provider most trusted by Cheapflights users for Seattle/Tacoma Intl-San José Juan Santamaria Intl flights.
Search Deals
From Washington to Costa Rica
Search Deals
One-way flight from Washington to Costa Rica
Search Deals
Highest demand for flights based on searches. 13% potential increase in price ($97 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 2% potential price decrease ($14 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in May 2026
Search Deals

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 May 15, 2026.
Use the filters below to find and compare flights from Washington to Costa Rica that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

PortlandSan José

PDX - SJO

PDXSJO

Portland

Tue 10/20

6:56 am-7:37 pm

1 stop11h 41m

San José Juan Santamaria Intl

Tue 10/27

1:20 pm-11:11 pm

1 stop10h 51m

$418

PortlandSan José

PDX - SJO

PDXSJO

Portland

Wed 9/9

7:13 pm-7:15 am

1 stop11h 02m

San José Juan Santamaria Intl

Thu 9/17

8:45 am-11:00 pm

1 stop15h 15m

$434

PortlandLiberia

PDX - LIR

PDXLIR

Portland

Tue 10/13

3:36 pm-12:10 pm

2 stops19h 34m

Liberia

Thu 10/22

1:20 pm-10:49 pm

1 stop10h 29m

$450

PascoSan José

PSC - SJO

PSCSJO

Pasco Tri Cities

Sun 5/24

7:17 pm-11:33 pm

2 stops27h 16m

San José Juan Santamaria Intl

Fri 6/5

12:53 am-10:24 pm

1 stop22h 31m

$485
Quickest round-trip

PortlandSan José

PDX - SJO

PDXSJO

Portland

Tue 10/6

6:56 am-7:37 pm

1 stop11h 41m

San José Juan Santamaria Intl

Wed 10/14

1:25 pm-10:49 pm

1 stop10h 24m

$486

PortlandLiberia

PDX - LIR

PDXLIR

Portland

Tue 6/2

6:03 pm-9:50 am

2 stops14h 47m

Liberia

Fri 6/5

1:20 pm-10:48 pm

1 stop10h 28m

$492

PortlandLiberia

PDX - LIR

PDXLIR

Portland

Mon 10/26

7:03 am-7:54 pm

1 stop11h 51m

Liberia

Thu 10/29

9:16 am-10:58 pm

1 stop14h 42m

$506

PortlandLiberia

PDX - LIR

PDXLIR

Portland

Sat 8/15

11:20 pm-1:11 pm

2 stops12h 51m

Liberia

Sat 8/29

2:45 pm-10:51 am

2 stops21h 06m

$515

PascoSan José

PSC - SJO

PSCSJO

Pasco Tri Cities

Sun 5/24

1:35 pm-7:15 am

1 stop16h 40m

San José Juan Santamaria Intl

Sat 6/6

8:45 am-12:46 am

1 stop17h 01m

$531

PortlandSan José

PDX - SJO

PDXSJO

Portland

Mon 9/28

7:15 pm-12:21 pm

2 stops16h 06m

San José Juan Santamaria Intl

Thu 10/1

1:25 pm-10:49 pm

1 stop10h 24m

$543

Flights are sorted by cheapest round-trip flights first.

Deals found on 5/12

Showing 1-10 of 60 resultsSorted by cheapest first
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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

How far ahead should I book a flight from State of Washington to Costa Rica?

The best time to book flights from State of Washington to Costa Rica is 74 days before your desired departure date. The cost of your flight will likely increase significantly if you book two weeks in advance of your flight.

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

Currently, March is the cheapest month in which you can book a flight from State of Washington to Costa Rica (average of $142). Flying from State of Washington to Costa Rica in July is currently the most expensive (average of $463). 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 May 15, 2026.

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.

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.

  • How long is the flight from State of Washington to Costa Rica?

    A quick flight from State of Washington to Costa Rica can take about 11h 41m. United Airlines provides one of the quickest options available for as low as $418. State of Washington and Costa Rica are separated by a distance of 3340 mi. This flight may include one or multiple stops.

  • 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 $132. Alaska Airlines flights start at $168 while deals on Southwest start at $177 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, March is the cheapest month in which you can book a flight from State of Washington to Costa Rica (average of $142). Flying from State of Washington to Costa Rica in July is currently the most expensive (average of $463). 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

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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 8 airlines flying from Washington to Costa Rica

Discover the top 8 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 May 15, 2026.
AirlineCheapestAverageFlexibilityOn-time
AviancaCheapest$152Average$230FlexibilityNo cancel feeOn-time71%
American AirlinesCheapest$287Average$569FlexibilityNo cancel feeOn-time71%
United AirlinesCheapest$297Average$567FlexibilityNo cancel feeOn-time69%
Alaska AirlinesCheapest$311Average$578FlexibilityNo cancel feeOn-time75%
DeltaCheapest$345Average$751FlexibilityNo cancel feeOn-timeN/A
JetBlueCheapest$362Average$681FlexibilityNo cancel feeOn-time62%
SouthwestCheapest$500Average$624FlexibilityNo cancel feeOn-time63%
AeromexicoCheapest$766Average$971FlexibilityNo cancel feeOn-timeN/A

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