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Find cheap flights from Washington to Costa Rica from $134

This is the cheapest one-way flight price found by a KAYAK user in the last 72 hours by searching for a flight from Washington to Costa Rica departing on 5/18. Fares are subject to change and may not be available on all flights or dates of travel. Click the price to replicate the search for this deal.
1 adult
0 bags
Fri 5/24
Fri 5/31

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In the last 7 days travelers have searched 45,119,101 times on KAYAK, and here is why:

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Good to know

Low season

October

High season

December

Cheapest flight

$134
Best time to beat the crowds with an average 30% drop in price.
Most popular time to fly with an average 28% increase in price.
Flight from Seattle to San José

FAQs for booking flights from Washington to Costa Rica

  • How does KAYAK find such low prices on flights from Washington to Costa Rica?

    KAYAK is a travel search engine. That means we look across the web to find the best prices we can find for our users. With over 2 billion flight queries processed yearly, we are able to display a variety of prices and options on flights from Washington to Costa Rica.

  • How does KAYAK's flight Price Forecast tool help me choose the right time to buy my flight ticket from Washington to Costa Rica?

    KAYAK’s flight Price Forecast tool uses historical data to determine whether the price for a flight to Costa Rica from Washington is likely to change within 7 days, so travelers know whether to wait or book now.

  • What is the Hacker Fare option on flights from Washington to Costa Rica?

    Hacker Fares allow you to combine one-way tickets in order to save you money over a traditional round-trip ticket. You could then fly to Costa Rica with an airline and back to Washington with another airline.

  • What is KAYAK's "flexible dates" feature and why should I care when looking for a flight from Washington to Costa Rica?

    Sometimes travel dates aren't set in stone. If your preferred travel dates have some wiggle room, flexible dates will show you all the options when flying to Costa Rica from Washington up to 3 days before/after your preferred dates. You can then pick the flights that suit you best.

See more FAQs

Book cheap flights from Washington to Costa Rica

Recent round-trip flight deals

5/4Sat
2 stopsSpirit Airlines
16h 29mSEA-SJO
5/8Wed
2 stopsSpirit Airlines
24h 09mSJO-SEA
$328
5/4Sat
2 stopsSpirit Airlines
16h 29mSEA-SJO
5/7Tue
2 stopsSpirit Airlines
24h 09mSJO-SEA
$359
9/1Sun
2 stopsAmerican Airlines
25h 36mGEG-LIR
9/11Wed
1 stopAmerican Airlines
31h 26mLIR-GEG
$397
9/1Sun
1 stopAmerican Airlines
30h 03mGEG-LIR
9/11Wed
1 stopAmerican Airlines
31h 26mLIR-GEG
$401
5/18Sat
2 stops
22h 11mSEA-SJO
5/25Sat
3 stops
31h 19mSJO-SEA
$415
5/11Sat
2 stops
22h 11mSEA-SJO
6/8Sat
1 stop
33h 24mSJO-SEA
$417
5/14Tue
1 stopAlaska Airlines
11h 56mSEA-SJO
5/21Tue
1 stopAlaska Airlines
12h 49mSJO-SEA
$453
5/14Tue
2 stopsAlaska Airlines
12h 56mSEA-SJO
5/22Wed
1 stopAlaska Airlines
17h 39mSJO-SEA
$458
5/14Tue
1 stopDelta
18h 49mSEA-SJO
6/9Sun
1 stopDelta
18h 06mSJO-SEA
$462
5/17Fri
1 stopDelta
13h 13mSEA-SJO
5/22Wed
1 stopDelta
16h 31mSJO-SEA
$471

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Recent one-way flight deals

5/18Sat
2 stopsSpirit Airlines
22h 11mSEA-SJO
$134
5/4Sat
2 stopsSpirit Airlines
16h 29mSEA-SJO
$138
5/9Thu
2 stops
38h 15mSEA-SJO
$145
5/11Sat
3 stops
34h 14mSEA-SJO
$155
5/12Sun
1 stopAmerican Airlines
12h 52mSEA-LIR
$168
5/11Sat
1 stopAmerican Airlines
10h 55mSEA-LIR
$170
9/25Wed
2 stopsAvianca
25h 25mSEA-SJO
$190
5/20Mon
2 stopsAvianca
23h 42mSEA-SJO
$195
6/10Mon
1 stopDelta
17h 10mSEA-LIR
$221
7/23Tue
1 stopDelta
26h 03mSEA-SJO
$232

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Last minute flights from Washington to Costa Rica

Last minute flight, train and bus deals

4/27Sat
multi-stopSpirit Airlines
16h 29mSEA-SJO
5/18Sat
multi-stopSpirit Airlines
24h 09mSJO-SEA
$478
4/27Sat
multi-stop
16h 29mSEA-SJO
6/7Fri
multi-stop
20h 58mSJO-SEA
$484
4/27Sat
multi-stop
16h 29mSEA-SJO
6/7Fri
multi-stop
31h 57mSJO-SEA
$507
4/27Sat
multi-stop
16h 29mSEA-SJO
5/17Fri
multi-stop
20h 58mSJO-SEA
$532
4/29Mon
multi-stopAmerican Airlines
11h 26mSEA-SJO
5/13Mon
multi-stopAmerican Airlines
12h 49mSJO-SEA
$566
4/27Sat
multi-stopAmerican Airlines
14h 51mSEA-SJO
6/8Sat
multi-stopAmerican Airlines
24h 09mSJO-SEA
$571
4/27Sat
multi-stopAlaska Airlines
10h 56mSEA-SJO
6/7Fri
multi-stopAlaska Airlines
20h 58mSJO-SEA
$583
4/27Sat
multi-stopUnited Airlines
12h 53mSEA-SJO
5/18Sat
multi-stopUnited Airlines
17h 53mSJO-SEA
$596
4/27Sat
multi-stopAlaska Airlines
45h 11mSEA-SJO
6/7Fri
multi-stopAlaska Airlines
43h 38mSJO-SEA
$616
4/27Sat
multi-stopUnited Airlines
15h 00mGEG-SJO
4/29Mon
multi-stopUnited Airlines
26h 35mSJO-GEG
$711

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Flights to Costa Rica

Return flight deals:

Costa Rica - Washington

Cabin classes: