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Find cheap flights from Washington to Costa Rica from $147

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 9/4. 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
Sat 6/29
Sat 7/6

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In the last 7 days travelers have searched 42,686,544 times on KAYAK, and here is why:

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Good to know

Low season

September

High season

December

Cheapest flight

$147
Best time to beat the crowds with an average 14% drop in price.
Most popular time to fly with an average 27% increase in price.
Flight from Portland 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

8/26Mon
2 stopsSpirit Airlines
23h 16mPDX-SJO
9/10Tue
2 stopsSpirit Airlines
24h 50mSJO-PDX
$309
8/26Mon
3 stopsSpirit Airlines
28h 03mPDX-SJO
9/10Tue
3 stopsSpirit Airlines
35h 24mSJO-PDX
$314
8/24Sat
2 stops
14h 40mSEA-SJO
8/27Tue
3 stops
32h 49mSJO-SEA
$352
8/20Tue
1 stop
16h 05mPDX-SJO
8/21Wed
2 stops
35h 24mSJO-PDX
$354
8/19Mon
1 stopAmerican Airlines
15h 39mSEA-SJO
8/27Tue
1 stopAmerican Airlines
20h 18mSJO-SEA
$362
8/24Sat
1 stopAmerican Airlines
14h 15mPDX-SJO
8/27Tue
1 stopAmerican Airlines
9h 48mSJO-PDX
$370
10/28Mon
2 stopsUnited Airlines
19h 51mPDX-SJO
11/4Mon
1 stopUnited Airlines
10h 48mSJO-PDX
$390
11/3Sun
2 stopsDelta
17h 43mPDX-LIR
11/13Wed
1 stopDelta
22h 38mLIR-PDX
$394
10/28Mon
1 stopUnited Airlines
26h 15mPDX-SJO
11/4Mon
1 stopUnited Airlines
10h 48mSJO-PDX
$400
11/3Sun
1 stopDelta
12h 18mPDX-LIR
11/13Wed
1 stopDelta
22h 38mLIR-PDX
$410

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Recent one-way flight deals

9/4Wed
2 stopsSpirit Airlines
21h 17mPDX-SJO
$147
8/19Mon
2 stopsSpirit Airlines
17h 32mSEA-SJO
$159
8/14Wed
2 stops
14h 40mSEA-SJO
$163
8/13Tue
1 stopAmerican Airlines
19h 54mSEA-SJO
$178
8/13Tue
1 stopDelta
14h 54mGEG-SJO
$180
8/12Mon
1 stopDelta
11h 44mGEG-SJO
$184
9/15Sun
2 stops
37h 20mSEA-SJO
$184
7/29Mon
1 stopAmerican Airlines
14h 10mPDX-LIR
$186
9/1Sun
1 stopUnited Airlines
11h 27mSEA-SJO
$208
9/1Sun
2 stopsUnited Airlines
26h 31mSEA-SJO
$214

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Last minute flights from Washington to Costa Rica

Last minute flight, train and bus deals

6/4Tue
multi-stopSpirit Airlines
22h 28mPDX-SJO
6/9Sun
multi-stopSpirit Airlines
22h 54mSJO-PDX
$531
6/1Sat
multi-stopSpirit Airlines
16h 57mSEA-SJO
6/7Fri
multi-stopSpirit Airlines
20h 25mSJO-SEA
$553
6/4Tue
multi-stopCopa Airlines
21h 19mSEA-SJO
6/18Tue
multi-stopCopa Airlines
19h 00mSJO-SEA
$559
6/1Sat
multi-stopAmerican Airlines
36h 41mPDX-LIR
6/6Thu
multi-stopAmerican Airlines
23h 32mLIR-PDX
$565
6/4Tue
multi-stopAmerican Airlines
36h 35mPDX-LIR
6/11Tue
multi-stopAmerican Airlines
13h 00mLIR-PDX
$599
6/4Tue
multi-stopCopa Airlines
15h 31mSEA-SJO
6/14Fri
multi-stopCopa Airlines
28h 57mSJO-SEA
$645
5/31Fri
multi-stopUnited Airlines
10h 38mPDX-LIR
6/6Thu
multi-stopUnited Airlines
10h 21mLIR-PDX
$658
5/31Fri
multi-stopUnited Airlines
10h 38mPDX-LIR
6/6Thu
multi-stopUnited Airlines
29h 11mLIR-PDX
$689
5/31Fri
multi-stopAlaska Airlines
11h 00mSEA-SJO
6/6Thu
multi-stopAlaska Airlines
19h 12mSJO-SEA
$713
5/31Fri
multi-stopAlaska Airlines
12h 00mSEA-SJO
6/6Thu
multi-stopAlaska Airlines
30h 23mSJO-SEA
$718

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Flights to Costa Rica

Return flight deals:

Costa Rica - Washington

Cabin classes: