$201+ Cheap flights from Washington to Costa Rica
This is the cheapest round-trip flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 10/24. Fares are subject to change and may not be available on all flights or dates of travel.
SEA — SJO
Oct 19 — Oct 261
Round-trip
1 adult, Economy
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Find cheap flights from Washington to Costa Rica with Cheapflights
1. Tell us where you want to go
Enter your travel information like dates, passengers, trip type (one-way or round trip), and preferred cabin class then click “Find deals”2. Select your favorite providers
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Cheapest flights from Washington to Costa RicaExplore 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 September 19, 2026.
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 September 19, 2026.
This American Airlines deal was found by Cheapflights users on 9/15. 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 11/39:14 pm -
1 stop13h 19m
Wed 11/111:33 pm -
1 stop12h 26m
Deal found 9/15![American Airlines logo]()
$440
This American Airlines deal was found by Cheapflights users on 9/17. 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 11/29:50 pm -
1 stop13h 17m
Mon 11/162:01 pm -
1 stop11h 58m
Deal found 9/17![American Airlines logo]()
$463
This American Airlines deal was found by Cheapflights users on 9/16. 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 10/1610:55 pm -
2 stops14h 05m
Fri 10/236:00 am -
2 stops18h 05m
Deal found 9/16![American Airlines logo]()
$468
This American Airlines deal was found by Cheapflights users on 9/16. 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.
Sat 10/2411:49 pm -
1 stop13h 11m
Sat 10/311:00 pm -
1 stop24h 07m
Deal found 9/16![American Airlines logo]()
$475
This American Airlines deal was found by Cheapflights users on 9/19. 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.
Sat 12/511:09 pm -
2 stops13h 08m
Thu 12/103:35 pm -
2 stops21h 32m
Deal found 9/19![American Airlines logo]()
$489
This BusinessClass deal was found by Cheapflights users on 9/17. 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 BusinessClass is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 11/22:34 pm -
2 stops20h 33m
Mon 11/162:46 pm -
1 stop10h 57m
Deal found 9/17![GOL logo]()
$490
This Avianca deal was found by Cheapflights users on 9/16. 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 10/176:40 am -
2 stops15h 35m
Sat 10/245:45 am -
2 stops15h 48m
Deal found 9/16![Multiple Airlines logo]()
$508
This American Airlines deal was found by Cheapflights users on 9/14. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 11/711:49 pm -
1 stop12h 46m
Sat 11/143:17 pm -
1 stop10h 26m
Deal found 9/14![American Airlines logo]()
$516
This American Airlines deal was found by Cheapflights users on 9/18. 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 11/111:49 pm -
1 stop12h 46m
Thu 11/123:17 pm -
1 stop10h 46m
Deal found 9/18![American Airlines logo]()
$524
This Avianca deal was found by Cheapflights users on 9/17. 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 10/157:03 am -
2 stops15h 12m
Thu 10/225:45 am -
2 stops15h 48m
Deal found 9/17![Multiple Airlines logo]()
$528
This BusinessClass deal was found by Cheapflights users on 9/17. 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 BusinessClass is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 12/111:21 pm -
2 stops19h 29m
Fri 12/43:54 pm -
2 stops22h 34m
Deal found 9/17![GOL logo]()
$532
This American Airlines deal was found by Cheapflights users on 9/16. 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.
Sat 10/2410:55 pm -
2 stops13h 48m
Sat 10/312:18 pm -
1 stop22h 49m
Deal found 9/16![American Airlines logo]()
$533
Best flights from Washington to Costa RicaDiscover carefully curated flight deals from Washington to Costa Rica that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated September 19, 2026.
Discover carefully curated flight deals from Washington to Costa Rica that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated September 19, 2026.
This American Airlines deal was found by Cheapflights users on 9/19. 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 11/92:13 pm -
2 stops20h 54m
Sat 11/143:54 pm -
2 stops23h 29m
Deal found 9/19![American Airlines logo]()
$545
This Delta deal was found by Cheapflights users on 9/14. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 12/3011:05 am -
2 stops23h 40m
Tue 1/123:25 pm -
2 stops26h 48m
Deal found 9/14![Delta logo]()
$551
This United Airlines deal was found by Cheapflights users on 9/18. 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.
Sun 1/107:49 pm -
1 stop10h 43m
Fri 1/151:15 am -
1 stop13h 04m
Deal found 9/18![United Airlines logo]()
$558
This Alaska Airlines deal was found by Cheapflights users on 9/18. 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 1/152:46 pm -
1 stop27h 44m
Sat 1/236:23 pm -
1 stop18h 28m
Deal found 9/18![Alaska Airlines logo]()
$596
This Priceline deal was found by Cheapflights users on 9/17. 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 2/58:07 am -
1 stop13h 18m
Fri 2/125:35 am -
2 stops18h 54m
Deal found 9/17![Multiple Airlines logo]()
$675
This American Airlines deal was found by Cheapflights users on 9/14. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 10/2912:49 pm -
1 stop24h 11m
Mon 11/22:46 pm -
2 stops24h 37m
Deal found 9/14![American Airlines logo]()
$557
This United Airlines deal was found by Cheapflights users on 9/16. 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 11/33:40 pm -
1 stop14h 52m
Tue 11/179:40 am -
1 stop10h 40m
Deal found 9/16![United Airlines logo]()
$558
This Delta deal was found by Cheapflights users on 9/15. 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 11/125:29 pm -
2 stops17h 16m
Sat 11/213:25 pm -
2 stops26h 56m
Deal found 9/15![Delta logo]()
$571
This United Airlines deal was found by Cheapflights users on 9/14. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 10/237:29 pm -
2 stops15h 24m
Mon 11/212:50 pm -
1 stop10h 23m
Deal found 9/14![United Airlines logo]()
$566
This Delta deal was found by Cheapflights users on 9/17. 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.
Mon 1/41:38 pm -
2 stops20h 57m
Fri 1/153:25 pm -
2 stops27h 34m
Deal found 9/17![Delta logo]()
$585
This Alaska Airlines deal was found by Cheapflights users on 9/18. 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 2/2210:30 am -
1 stop11h 27m
Wed 2/241:45 am -
1 stop16h 42m
Deal found 9/18![Alaska Airlines logo]()
$678
This American Airlines deal was found by Cheapflights users on 9/16. 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 10/233:34 pm -
2 stops21h 26m
Fri 10/303:01 pm -
2 stops26h 39m
Deal found 9/16![American Airlines logo]()
$628
This United Airlines deal was found by Cheapflights users on 9/17. 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.
Wed 3/35:00 am -
1 stop9h 08m
Wed 3/177:35 am -
2 stops17h 03m
Deal found 9/17![United Airlines logo]()
$583
This Delta deal was found by Cheapflights users on 9/15. 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.
Mon 12/711:01 am -
2 stops33h 16m
Fri 12/112:37 pm -
2 stops21h 29m
Deal found 9/15![Delta logo]()
$592
This Mytrip deal was found by Cheapflights users on 9/14. 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 Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 11/252:30 pm -
3 stops21h 08m
Mon 11/302:40 pm -
2 stops25h 00m
Deal found 9/14![Multiple Airlines logo]()
$742
This Alaska Airlines deal was found by Cheapflights users on 9/14. 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 Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 12/314:34 pm -
1 stop12h 38m
Fri 1/158:33 am -
2 stops26h 53m
Deal found 9/14![Alaska Airlines logo]()
$687
This American Airlines deal was found by Cheapflights users on 9/19. 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 10/1812:49 pm -
2 stops22h 11m
Thu 10/221:00 pm -
1 stop23h 59m
Deal found 9/19![American Airlines logo]()
$650
This United Airlines deal was found by Cheapflights users on 9/18. 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 11/37:35 pm -
1 stop10h 57m
Tue 11/109:40 am -
1 stop10h 46m
Deal found 9/18![United Airlines logo]()
$600
This Delta deal was found by Cheapflights users on 9/15. 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.
Fri 1/2210:50 am -
2 stops26h 35m
Wed 2/33:25 pm -
2 stops22h 52m
Deal found 9/15![Delta logo]()
$613
This Alaska Airlines deal was found by Cheapflights users on 9/15. 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.
Tue 10/1311:33 am -
1 stop31h 18m
Thu 10/229:16 am -
1 stop12h 40m
Deal found 9/15![Alaska Airlines logo]()
$708
This United Airlines deal was found by Cheapflights users on 9/18. 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.
Mon 11/27:26 pm -
2 stops15h 44m
Mon 11/92:20 pm -
1 stop10h 55m
Deal found 9/18![United Airlines logo]()
$619
This Delta deal was found by Cheapflights users on 9/15. 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 10/612:42 pm -
2 stops22h 18m
Tue 10/201:25 pm -
2 stops23h 37m
Deal found 9/15![Delta logo]()
$647
This Alaska Airlines deal was found by Cheapflights users on 9/15. 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 10/129:59 pm -
2 stops44h 52m
Thu 10/229:16 am -
1 stop11h 34m
Deal found 9/15![Alaska Airlines logo]()
$717
This United Airlines deal was found by Cheapflights users on 9/17. 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.
Wed 11/111:10 pm -
1 stop17h 22m
Mon 11/169:40 am -
1 stop13h 17m
Deal found 9/17![United Airlines logo]()
$620
This Alaska Airlines deal was found by Cheapflights users on 9/17. 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.
Wed 1/137:44 am -
1 stop10h 47m
Wed 1/208:33 am -
1 stop10h 44m
Deal found 9/17![Alaska Airlines logo]()
$718
This Justfly.com deal was found by Cheapflights users on 9/15. 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 Justfly.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 3/96:25 pm -
3 stops36h 10m
Sun 3/147:45 am -
2 stops17h 00m
Deal found 9/15![Multiple Airlines logo]()
$991
This Delta deal was found by Cheapflights users on 9/14. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 10/203:55 pm -
1 stop19h 05m
Mon 10/261:25 pm -
1 stop11h 27m
Deal found 9/14![Delta logo]()
$687
This United Airlines deal was found by Cheapflights users on 9/14. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 12/2911:59 pm -
1 stop16h 38m
Wed 1/132:20 pm -
1 stop10h 58m
Deal found 9/14![United Airlines logo]()
$644
This Delta deal was found by Cheapflights users on 9/17. 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.
Mon 10/193:55 pm -
1 stop19h 05m
Mon 10/261:25 pm -
1 stop21h 38m
Deal found 9/17![Delta logo]()
$687
This United Airlines deal was found by Cheapflights users on 9/15. 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 11/103:35 pm -
2 stops19h 35m
Wed 11/1812:50 pm -
1 stop10h 29m
Deal found 9/15![United Airlines logo]()
$646
Last-minute flights from Washington to Costa RicaDiscover last-minute flight deals from Washington to Costa Rica. Data last updated September 19, 2026 and is based on user searches.
Discover last-minute flight deals from Washington to Costa Rica. Data last updated September 19, 2026 and is based on user searches.
This United Airlines deal was found by Cheapflights users on 9/14. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 10/1211:59 pm -
1 stop11h 22m
Mon 10/198:45 am -
1 stop15h 12m
Deal found 9/14![United Airlines logo]()
$538
This Avianca deal was found by Cheapflights users on 9/17. 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 10/157:03 am -
2 stops15h 12m
Thu 10/225:45 am -
2 stops15h 48m
Deal found 9/17![Multiple Airlines logo]()
$528
This American Airlines deal was found by Cheapflights users on 9/16. 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 10/1610:55 pm -
2 stops14h 05m
Fri 10/236:00 am -
2 stops18h 05m
Deal found 9/16![American Airlines logo]()
$468
This American Airlines deal was found by Cheapflights users on 9/18. 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 10/1611:49 pm -
1 stop12h 54m
Fri 10/232:18 pm -
1 stop10h 21m
Deal found 9/18![American Airlines logo]()
$545
This Avianca deal was found by Cheapflights users on 9/16. 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 10/176:40 am -
2 stops15h 35m
Sat 10/245:45 am -
2 stops15h 48m
Deal found 9/16![Multiple Airlines logo]()
$508
This eDestinos deal was found by Cheapflights users on 9/16. 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 eDestinos is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 10/219:28 am -
1 stop22h 02m
Sun 10/254:15 pm -
1 stop28h 45m
Deal found 9/16![Multiple Airlines logo]()
$537
This American Airlines deal was found by Cheapflights users on 9/16. 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.
Sat 10/2411:49 pm -
1 stop13h 11m
Sat 10/311:00 pm -
1 stop24h 07m
Deal found 9/16![American Airlines logo]()
$475
This American Airlines deal was found by Cheapflights users on 9/16. 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.
Sat 10/2410:55 pm -
2 stops13h 48m
Sat 10/312:44 pm -
2 stops23h 44m
Deal found 9/16![American Airlines logo]()
$521
This Southwest deal was found by Cheapflights users on 9/18. 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.
Sun 10/259:55 pm -
2 stops20h 45m
Fri 10/301:30 pm -
2 stops21h 55m
Deal found 9/18![Southwest logo]()
$539
This Avianca deal was found by Cheapflights users on 9/17. 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 -
2 stops15h 12m
Wed 11/115:35 am -
2 stops19h 43m
Deal found 9/17![Multiple Airlines logo]()
$546
This United Airlines deal was found by Cheapflights users on 9/15. 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.
Wed 10/281:10 pm -
2 stops20h 15m
Tue 11/39:40 am -
1 stop11h 01m
Deal found 9/15![United Airlines logo]()
$540
This American Airlines deal was found by Cheapflights users on 9/17. 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 10/2912:49 pm -
2 stops22h 11m
Mon 11/26:20 am -
2 stops16h 20m
Deal found 9/17![American Airlines logo]()
$545
One-way flights from Washington to Costa RicaSearch for one-way flight options from Washington to Costa Rica. Find affordable one-way fares based on user searches. Data last updated September 19, 2026.
Search for one-way flight options from Washington to Costa Rica. Find affordable one-way fares based on user searches. Data last updated September 19, 2026.
This American Airlines deal was found by Cheapflights users on 9/14. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 10/2410:55 pm -
2 stops14h 05m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/14![American Airlines logo]()
$201
This American Airlines deal was found by Cheapflights users on 9/16. 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.
Sat 12/511:34 pm -
2 stops12h 43m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/16![American Airlines logo]()
$204
This American Airlines deal was found by Cheapflights users on 9/14. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 10/152:25 pm -
1 stop22h 35m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/14![American Airlines logo]()
$236
This Avianca deal was found by Cheapflights users on 9/17. 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.
Wed 1/136:00 am -
2 stops15h 15m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/17![Multiple Airlines logo]()
$247
This United Airlines deal was found by Cheapflights users on 9/14. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 10/273:40 pm -
1 stop14h 52m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/14![United Airlines logo]()
$248
This Southwest deal was found by Cheapflights users on 9/14. 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 Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 10/285:35 am -
2 stops13h 05m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/14![Southwest logo]()
$249
This United Airlines deal was found by Cheapflights users on 9/14. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 10/221:05 pm -
1 stop17h 10m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/14![United Airlines logo]()
$249
This Southwest deal was found by Cheapflights users on 9/14. 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 Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 10/235:00 am -
2 stops13h 40m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/14![Southwest logo]()
$254
This eDestinos deal was found by Cheapflights users on 9/15. 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 eDestinos is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 11/166:53 am -
1 stop14h 22m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/15![Multiple Airlines logo]()
$255
This Delta deal was found by Cheapflights users on 9/14. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 10/237:23 pm -
2 stops15h 37m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/14![Delta logo]()
$258
This United Airlines deal was found by Cheapflights users on 9/15. 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.
Mon 1/253:30 pm -
1 stop15h 02m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/15![United Airlines logo]()
$258
This Priceline deal was found by Cheapflights users on 9/15. 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.
Wed 12/309:24 pm -
1 stop31h 48m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/15![Alaska Airlines logo]()
$260
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 September 19, 2026.
Most accurate provider | FlightHub 3 stars |
|---|---|
Most trusted provider | FlightHub 3 stars |
Round-trip from | $440 (American Airlines) |
One-way from | $201 (American Airlines) |
Popular in | March |
Cheapest in | January |
Average price | $634 |
Good round-trip deal | $937 or less |
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 7,457,451 searches. Data last updated September 19, 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
Cheapest round-trip
SeattleLiberia
SEA Seattle/Tacoma Intl - LIR Liberia
SEALIR
Seattle/Tacoma Intl
Sat 12/5
5:47 pm-2:35 pm
1 stop18h 48m
Liberia
Wed 12/31
12:00 am-10:00 pm
Nonstop0h 00m
$204
PortlandSan José
PDX Portland - SJO San José Juan Santamaria Intl
PDXSJO
Portland
Tue 10/27
3:40 pm-7:32 am
1 stop14h 52m
San José Juan Santamaria Intl
Wed 12/31
12:00 am-10:00 pm
Nonstop0h 00m
$248
SpokaneSan José
GEG Spokane - SJO San José Juan Santamaria Intl
GEGSJO
Spokane
Fri 12/4
1:35 pm-12:15 pm
2 stops20h 40m
San José Juan Santamaria Intl
Wed 12/31
12:00 am-10:00 pm
Nonstop0h 00m
$249
SpokaneSan José
GEG Spokane - SJO San José Juan Santamaria Intl
GEGSJO
Spokane
Wed 10/28
6:05 am-7:40 pm
2 stops12h 35m
San José Juan Santamaria Intl
Wed 12/31
12:00 am-10:00 pm
Nonstop0h 00m
$249
SpokaneSan José
GEG Spokane - SJO San José Juan Santamaria Intl
GEGSJO
Spokane
Sat 1/23
12:30 pm-8:32 am
1 stop18h 02m
San José Juan Santamaria Intl
Wed 12/31
12:00 am-10:00 pm
Nonstop0h 00m
$249
SpokaneSan José
GEG Spokane - SJO San José Juan Santamaria Intl
GEGSJO
Spokane
Fri 10/23
5:00 am-7:40 pm
2 stops13h 40m
San José Juan Santamaria Intl
Wed 12/31
12:00 am-10:00 pm
Nonstop0h 00m
$254
PortlandSan José
PDX Portland - SJO San José Juan Santamaria Intl
PDXSJO
Portland
Tue 10/27
5:15 pm-12:00 pm
2 stops17h 45m
San José Juan Santamaria Intl
Wed 12/31
12:00 am-10:00 pm
Nonstop0h 00m
$258
PortlandSan José
PDX Portland - SJO San José Juan Santamaria Intl
PDXSJO
Portland
Mon 11/16
7:04 pm-1:12 pm
2 stops16h 08m
San José Juan Santamaria Intl
Wed 12/31
12:00 am-10:00 pm
Nonstop0h 00m
$258
PortlandSan José
PDX Portland - SJO San José Juan Santamaria Intl
PDXSJO
Portland
Mon 1/25
3:30 pm-8:32 am
1 stop15h 02m
San José Juan Santamaria Intl
Wed 12/31
12:00 am-10:00 pm
Nonstop0h 00m
$258
Quickest round-trip
PortlandSan José
PDX Portland - SJO San José Juan Santamaria Intl
PDXSJO
Portland
Tue 1/26
7:10 am-6:16 pm
1 stop9h 06m
San José Juan Santamaria Intl
Wed 12/31
12:00 am-10:00 pm
Nonstop0h 00m
$258
Showing 1-10 of 60 resultsSorted by cheapest first
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.
SEA-LIR
PDX-SJO
PDX-LIR
SEA-SJO
GEG-SJO
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
USWA-CR0
SEA-LIR
PDX-SJO
PDX-LIR
SEA-SJO
What is the cheapest month to book a flight from State of Washington to Costa Rica?
Currently, January is the cheapest month in which you can book a flight from State of Washington to Costa Rica (average of $542). Flying from State of Washington to Costa Rica in April is currently the most expensive (average of $814). 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.
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.
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.
Browse thousands of different options on Cheapflights for your next trip
Toggle through the tabs below to find thousands of 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.
Complete your trip
Complete your trip to Costa Rica by adding a car rental and/or hotel reservation to your travel itinerary.
Search flights from Washington to Costa Rica by cabin class
Find flights from Washington to Costa Rica, based on your preferred cabin class, be it economy, premium economy, business, or first class.
Washington and Costa Rica flights
Browse other Washington and Costa Rica flight options. Last updated on September 19, 2026.
Popular flight searches
Check out other popular destinations found by fellow travelers in 2026
Find a return flight route from Costa Rica
Find the right flight back to Washington after your stay in Costa Rica
Washington to Costa Rica flights
Consider these flights traveling from Washington to Costa Rica.
Top 7 airlines flying from Washington to Costa Rica
Discover the top 7 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 7,457,451 searches. Data last updated September 19, 2026.
| Airline | Cheapest | Average | Flexibility | On-time |
|---|---|---|---|---|
| Cheapest$316 | Average$668 | FlexibilityNo cancel fee | On-time71% | |
| Cheapest$317 | Average$615 | FlexibilityNo cancel fee | On-time69% | |
| Cheapest$337 | Average$661 | FlexibilityNo cancel fee | On-time75% | |
| Cheapest$362 | Average$682 | FlexibilityNo cancel fee | On-time62% | |
| Cheapest$369 | Average$769 | FlexibilityNo cancel fee | On-timeN/A | |
| Cheapest$384 | Average$740 | FlexibilityNo cancel fee | On-time67% | |
| Cheapest$500 | Average$640 | FlexibilityNo cancel fee | On-time63% |