$251+ Cheap flights from Seattle (SEA) 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 2/14. Fares are subject to change and may not be available on all flights or dates of travel.
SEA — SJO
Oct 24 — Oct 311
Round-trip
1 adult, Economy
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Find cheap flights from Seattle 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
We find the providers serving your travel needs. Choose up to four travel providers to compare side-by-side for flights, hotels, or car rentals.3. Compare prices and book
Review each provider’s pricing and select the best option for you! Book through your favorite provider’s website for a seamless experience.Cheap flight deals from Seattle to Costa Rica
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Cheapest flights from Seattle to Costa RicaExplore the most affordable flight options available from Seattle to Costa Rica. Find the lowest fares from popular airlines and budget airlines, with prices last updated on September 24, 2026.
Explore the most affordable flight options available from Seattle to Costa Rica. Find the lowest fares from popular airlines and budget airlines, with prices last updated on September 24, 2026.
This eDestinos deal was found by Cheapflights users on 9/20. 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 12/27:05 am -
1 stop23h 30m
Fri 12/114:15 pm -
1 stop20h 22m
Deal found 9/20![Multiple Airlines logo]()
$568
This Avianca 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 Avianca is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 9/309:27 am -
2 stops22h 03m
Sun 10/44:35 pm -
2 stops19h 00m
Deal found 9/19![Multiple Airlines logo]()
$571
This Avianca 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 Avianca is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 10/162:02 pm -
2 stops17h 28m
Thu 10/227:45 am -
1 stop15h 14m
Deal found 9/19![Multiple Airlines logo]()
$580
This Southwest deal was found by Cheapflights users on 9/21. 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 11/89:25 pm -
2 stops12h 55m
Tue 11/242:10 pm -
2 stops13h 35m
Deal found 9/21![Southwest logo]()
$589
This eDestinos 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 eDestinos is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 9/2611:15 pm -
1 stop32h 15m
Sat 10/37:45 am -
1 stop15h 14m
Deal found 9/19![Multiple Airlines logo]()
$593
This FlightHub 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 FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 12/48:05 am -
2 stops22h 30m
Mon 12/147:00 am -
1 stop17h 20m
Deal found 9/19![Multiple Airlines logo]()
$594
This Southwest deal was found by Cheapflights users on 9/21. 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.
Mon 10/266:15 am -
2 stops12h 25m
Mon 11/22:10 pm -
2 stops13h 05m
Deal found 9/21![Southwest logo]()
$598
This deal was found by Cheapflights users on 9/22. 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 is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 10/3010:35 pm -
1 stop12h 25m
Fri 11/132:37 pm -
1 stop11h 20m
Deal found 9/22![Delta logo]()
$600
This FlightHub 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 FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 10/219:28 am -
2 stops22h 02m
Sun 10/254:15 pm -
2 stops19h 20m
Deal found 9/19![Multiple Airlines logo]()
$603
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.
Wed 10/215:41 pm -
1 stop19h 19m
Sun 10/256:00 am -
1 stop18h 59m
Deal found 9/19![American Airlines logo]()
$605
This Justfly.com deal was found by Cheapflights users on 9/23. 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 10/2010:15 pm -
2 stops33h 15m
Fri 10/234:35 pm -
2 stops24h 45m
Deal found 9/23![Multiple Airlines logo]()
$606
This Kiwi.com deal was found by Cheapflights users on 9/21. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 10/263:31 pm -
2 stops14h 19m
Mon 11/27:40 am -
1 stop32h 00m
Deal found 9/21![Multiple Airlines logo]()
$624
Best flights from Seattle to Costa RicaDiscover carefully curated flight deals from Seattle to Costa Rica that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated September 24, 2026.
Discover carefully curated flight deals from Seattle to Costa Rica that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated September 24, 2026.
This United Airlines deal was found by Cheapflights users on 9/22. 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 1/53:30 pm -
1 stop15h 02m
Wed 5/58:45 am -
1 stop10h 22m
Deal found 9/22![United Airlines logo]()
$600
This Delta deal was found by Cheapflights users on 9/23. 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 10/233:55 pm -
1 stop19h 05m
Tue 10/271:25 pm -
1 stop11h 27m
Deal found 9/23![Delta logo]()
$687
This KAYAK deal was found by Cheapflights users on 9/23. 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 KAYAK is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 10/1010:07 am -
1 stop9h 17m
Sat 10/177:15 am -
1 stop12h 30m
Deal found 9/23![Multiple Airlines logo]()
$872
This Alaska Airlines deal was found by Cheapflights users on 9/20. 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.
Sat 11/288:23 am -
Nonstop7h 07m
Fri 12/411:31 am -
1 stop13h 30m
Deal found 9/20![Alaska Airlines logo]()
$885
This United Airlines deal was found by Cheapflights users on 9/21. 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.
Sat 11/711:59 pm -
1 stop9h 26m
Sun 11/156:40 am -
1 stop14h 57m
Deal found 9/21![United Airlines logo]()
$651
This United Airlines deal was found by Cheapflights users on 9/22. 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 1/77:03 am -
1 stop9h 13m
Sat 5/16:00 am -
2 stops13h 07m
Deal found 9/22![United Airlines logo]()
$654
This United Airlines deal was found by Cheapflights users on 9/22. 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 1/57:32 pm -
1 stop11h 00m
Sat 5/16:00 am -
2 stops13h 07m
Deal found 9/22![United Airlines logo]()
$660
This United Airlines deal was found by Cheapflights users on 9/23. 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 12/75:05 am -
1 stop9h 05m
Mon 12/148:45 am -
1 stop16h 06m
Deal found 9/23![United Airlines logo]()
$671
This United Airlines deal was found by Cheapflights users on 9/23. 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 10/228:29 pm -
2 stops14h 41m
Mon 10/2612:00 pm -
1 stop10h 19m
Deal found 9/23![United Airlines logo]()
$696
This United Airlines deal was found by Cheapflights users on 9/21. 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 10/89:05 am -
1 stop21h 10m
Wed 10/211:25 pm -
2 stops23h 10m
Deal found 9/21![United Airlines logo]()
$732
This United Airlines deal was found by Cheapflights users on 9/23. 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 1/11:18 pm -
2 stops15h 07m
Sat 5/16:00 am -
2 stops15h 48m
Deal found 9/23![United Airlines logo]()
$735
This United 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 1/93:30 pm -
2 stops12h 55m
Mon 1/181:15 am -
2 stops24h 16m
Deal found 9/19![United Airlines logo]()
$735
This United Airlines deal was found by Cheapflights users on 9/23. 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 10/1612:16 pm -
2 stops23h 05m
Thu 10/221:25 pm -
3 stops35h 01m
Deal found 9/23![United Airlines logo]()
$744
This United Airlines deal was found by Cheapflights users on 9/20. 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 11/812:28 pm -
3 stops22h 42m
Mon 11/168:45 am -
2 stops29h 35m
Deal found 9/20![United Airlines logo]()
$806
This United Airlines deal was found by Cheapflights users on 9/21. 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 10/196:05 pm -
2 stops17h 05m
Sun 10/251:20 pm -
1 stop10h 33m
Deal found 9/21![United Airlines logo]()
$806
This United Airlines deal was found by Cheapflights users on 9/20. 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.
Sat 11/2810:00 pm -
2 stops13h 10m
Fri 12/42:20 pm -
3 stops33h 01m
Deal found 9/20![United Airlines logo]()
$806
This United Airlines deal was found by Cheapflights users on 9/21. 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 10/1911:59 pm -
1 stop11h 11m
Fri 10/231:20 pm -
1 stop10h 40m
Deal found 9/21![United Airlines logo]()
$826
This United Airlines deal was found by Cheapflights users on 9/20. 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 11/410:40 am -
2 stops24h 30m
Wed 11/111:00 pm -
1 stop10h 19m
Deal found 9/20![United Airlines logo]()
$831
This United 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 10/33:55 pm -
2 stops19h 15m
Fri 10/91:20 pm -
2 stops12h 55m
Deal found 9/19![United Airlines logo]()
$833
Last-minute flights from Seattle to Costa RicaDiscover last-minute flight deals from Seattle to Costa Rica. Data last updated September 24, 2026 and is based on user searches.
Discover last-minute flight deals from Seattle to Costa Rica. Data last updated September 24, 2026 and is based on user searches.
This eDestinos 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 eDestinos is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 9/2611:15 pm -
1 stop32h 15m
Sat 10/37:45 am -
1 stop15h 14m
Deal found 9/19![Multiple Airlines logo]()
$593
This Avianca 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 Avianca is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 9/309:27 am -
2 stops22h 03m
Sun 10/44:35 pm -
2 stops19h 00m
Deal found 9/19![Multiple Airlines logo]()
$571
This Mytrip deal was found by Cheapflights users on 9/22. 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 10/76:58 am -
2 stops24h 32m
Sun 10/114:35 pm -
2 stops19h 00m
Deal found 9/22![Multiple Airlines logo]()
$610
This Avianca 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 Avianca is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 10/162:02 pm -
2 stops17h 28m
Thu 10/227:45 am -
1 stop15h 14m
Deal found 9/19![Multiple Airlines logo]()
$580
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.
Fri 10/165:41 pm -
1 stop19h 19m
Thu 10/221:00 pm -
1 stop12h 10m
Deal found 9/19![American Airlines logo]()
$609
This oojo deal was found by Cheapflights users on 9/20. 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 oojo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 10/182:02 pm -
2 stops17h 28m
Sun 10/254:15 pm -
2 stops19h 20m
Deal found 9/20![Multiple Airlines logo]()
$608
This Justfly.com deal was found by Cheapflights users on 9/23. 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 10/2010:15 pm -
2 stops33h 15m
Fri 10/234:35 pm -
2 stops24h 45m
Deal found 9/23![Multiple Airlines logo]()
$606
This FlightHub 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 FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 10/219:28 am -
2 stops22h 02m
Sun 10/254:15 pm -
2 stops19h 20m
Deal found 9/19![Multiple Airlines logo]()
$603
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.
Wed 10/215:41 pm -
1 stop19h 19m
Sun 10/256:00 am -
1 stop18h 59m
Deal found 9/19![American Airlines logo]()
$605
This Southwest deal was found by Cheapflights users on 9/21. 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.
Mon 10/266:15 am -
2 stops12h 25m
Mon 11/22:10 pm -
2 stops13h 05m
Deal found 9/21![Southwest logo]()
$598
This Kiwi.com deal was found by Cheapflights users on 9/21. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 10/263:31 pm -
2 stops14h 19m
Mon 11/27:40 am -
1 stop32h 00m
Deal found 9/21![Multiple Airlines logo]()
$624
This deal was found by Cheapflights users on 9/22. 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 is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 10/3010:35 pm -
1 stop12h 25m
Fri 11/132:37 pm -
1 stop11h 20m
Deal found 9/22![Delta logo]()
$600
One-way flights from Seattle to Costa RicaSearch for one-way flight options from Seattle to Costa Rica. Find affordable one-way fares based on user searches. Data last updated September 24, 2026.
Search for one-way flight options from Seattle to Costa Rica. Find affordable one-way fares based on user searches. Data last updated September 24, 2026.
This FlightHub deal was found by Cheapflights users on 9/22. 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.
Sun 2/1411:32 am -
1 stop10h 27m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/22![Multiple Airlines logo]()
$251
This eDestinos deal was found by Cheapflights users on 9/23. 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.
Tue 11/1711:10 pm -
1 stop31h 25m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/23![Multiple Airlines logo]()
$270
This Avianca 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 Avianca is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 1/62:40 pm -
2 stops15h 55m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/19![Multiple Airlines logo]()
$275
This Avianca deal was found by Cheapflights users on 9/22. 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.
Sun 10/189:28 am -
2 stops22h 02m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/22![Multiple Airlines logo]()
$276
This Avianca deal was found by Cheapflights users on 9/23. 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 9/301:30 pm -
2 stops18h 00m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/23![Multiple Airlines logo]()
$278
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.
Tue 11/109:45 pm -
1 stop13h 22m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/19![American Airlines logo]()
$279
This Avianca deal was found by Cheapflights users on 9/20. 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 10/149:28 am -
2 stops22h 02m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/20![Multiple Airlines logo]()
$282
This American Airlines deal was found by Cheapflights users on 9/22. 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 10/185:41 pm -
1 stop19h 19m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/22![American Airlines logo]()
$288
This United Airlines deal was found by Cheapflights users on 9/20. 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 9/2911:59 pm -
1 stop18h 38m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/20![United Airlines logo]()
$289
This FlightHub 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 FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 1/37:00 am -
2 stops23h 35m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/19![Multiple Airlines logo]()
$290
This eDestinos deal was found by Cheapflights users on 9/23. 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 10/198:08 am -
1 stop29h 57m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/23![Multiple Airlines logo]()
$293
This Kiwi.com deal was found by Cheapflights users on 9/24. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 11/232:30 pm -
3 stops20h 05m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/24![WestJet logo]()
$296
Find flight deals from Seattle to Costa Rica
Keep the following information in mind while searching for Seattle to Costa Rica flight deals. Data was last updated September 24, 2026.
Most accurate provider | Ovago 3 stars |
|---|---|
Most trusted provider | Ovago 3 stars |
Round-trip from | $562 (Avianca) |
One-way from | $251 (FlightHub) |
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 Seattle 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 24, 2026.
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Cheapest round-trip
SeattleSan José
SEA Seattle/Tacoma Intl - SJO San José Juan Santamaria Intl
SEASJO
Seattle/Tacoma Intl
Sun 10/18
9:28 am-8:30 am
2 stops22h 02m
San José Juan Santamaria Intl
Wed 12/31
12:00 am-10:00 pm
Nonstop0h 00m
$276
SeattleSan José
SEA Seattle/Tacoma Intl - SJO San José Juan Santamaria Intl
SEASJO
Seattle/Tacoma Intl
Tue 11/3
1:16 pm-8:32 am
1 stop17h 16m
San José Juan Santamaria Intl
Wed 12/31
12:00 am-10:00 pm
Nonstop0h 00m
$279
SeattleSan José
SEA Seattle/Tacoma Intl - SJO San José Juan Santamaria Intl
SEASJO
Seattle/Tacoma Intl
Sat 12/5
6:00 am-10:17 pm
1 stop14h 17m
San José Juan Santamaria Intl
Wed 12/31
12:00 am-10:00 pm
Nonstop0h 00m
$279
SeattleSan José
SEA Seattle/Tacoma Intl - SJO San José Juan Santamaria Intl
SEASJO
Seattle/Tacoma Intl
Sat 10/31
5:23 pm-7:32 am
1 stop13h 09m
San José Juan Santamaria Intl
Wed 12/31
12:00 am-10:00 pm
Nonstop0h 00m
$279
SeattleSan José
SEA Seattle/Tacoma Intl - SJO San José Juan Santamaria Intl
SEASJO
Seattle/Tacoma Intl
Sun 1/10
1:16 pm-8:32 am
1 stop17h 16m
San José Juan Santamaria Intl
Wed 12/31
12:00 am-10:00 pm
Nonstop0h 00m
$279
Quickest round-trip
SeattleSan José
SEA Seattle/Tacoma Intl - SJO San José Juan Santamaria Intl
SEASJO
Seattle/Tacoma Intl
Fri 10/2
7:25 pm-7:15 am
1 stop10h 50m
San José Juan Santamaria Intl
Wed 12/31
12:00 am-10:00 pm
Nonstop0h 00m
$289
SeattleLiberia
SEA Seattle/Tacoma Intl - LIR Liberia
SEALIR
Seattle/Tacoma Intl
Mon 11/23
2:30 pm-12:35 pm
3 stops20h 05m
Liberia
Wed 12/31
12:00 am-10:00 pm
Nonstop0h 00m
$296
SeattleSan José
SEA Seattle/Tacoma Intl - SJO San José Juan Santamaria Intl
SEASJO
Seattle/Tacoma Intl
Sat 10/31
8:20 am-8:31 pm
1 stop11h 11m
San José Juan Santamaria Intl
Wed 12/31
12:00 am-10:00 pm
Nonstop0h 00m
$299
SeattleLiberia
SEA Seattle/Tacoma Intl - LIR Liberia
SEALIR
Seattle/Tacoma Intl
Sun 12/13
3:15 pm-7:35 am
1 stop14h 20m
Liberia
Wed 12/31
12:00 am-10:00 pm
Nonstop0h 00m
$310
SeattleSan José
SEA Seattle/Tacoma Intl - SJO San José Juan Santamaria Intl
SEASJO
Seattle/Tacoma Intl
Tue 11/3
5:47 pm-1:46 pm
1 stop17h 59m
San José Juan Santamaria Intl
Wed 12/31
12:00 am-10:00 pm
Nonstop0h 00m
$317
Showing 1-10 of 38 resultsSorted by cheapest first
Best time to book a flight from Seattle to Costa Rica
Have a flexible travel schedule? Discover the best time to fly to Costa Rica from Seattle with our price prediction graph.
SEA-SJO
SEA-LIR
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 Seattle to Costa Rica
SEA-CR0
SEA-SJO
SEA-LIR
What is the cheapest month to book a flight from Seattle to Costa Rica?
Currently, January is the cheapest month in which you can book a flight from Seattle to Costa Rica (average of $559). Flying from Seattle to Costa Rica in April is currently the most expensive (average of $819). 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 Seattle to Costa Rica?
The best time to book flights from Seattle 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.
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 September 24, 2026.
Get a feel of what it's like to fly with Alaska Airlines,Delta, andUnited Airlines from Seattle to Costa Rica by reading reviews from past customers. Users have also rated airlines in terms of entertainment options, comfort, food, crew/service, and boarding process.
Food
7.0
Entertainment
7.0
Overall
7.9
Boarding
8.1
Comfort
7.8
Crew
8.5
Reviews
1 / 20
6.0
GoodAnonymous,Jul 2026
SEA - LHR
Food
7.0
Entertainment
7.0
Overall
7.9
Boarding
8.1
Comfort
7.8
Crew
8.5
Reviews
1 / 20
6.0
GoodAnonymous,Jul 2026
SEA - LHR
Food
7.0
Entertainment
7.0
Overall
7.9
Boarding
8.1
Comfort
7.8
Crew
8.5
Reviews
1 / 20
6.0
GoodAnonymous,Jul 2026
SEA - LHR
Food
7.0
Entertainment
7.0
Overall
7.9
Boarding
8.1
Comfort
7.8
Crew
8.5
Reviews
1 / 20
6.0
GoodAnonymous,Jul 2026
SEA - LHR
Food
7.0
Entertainment
7.0
Overall
7.9
Boarding
8.1
Comfort
7.8
Crew
8.5
Reviews
1 / 20
6.0
GoodAnonymous,Jul 2026
SEA - LHR
Food
7.0
Entertainment
7.0
Overall
7.9
Boarding
8.1
Comfort
7.8
Crew
8.5
Reviews
1 / 20
6.0
GoodAnonymous,Jul 2026
SEA - LHR
Related info for your journey
Find useful and relevant information for your journey from Seattle 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
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Alternative routes for Seattle 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 Seattle to Costa Rica by cabin class
Find flights from Seattle to Costa Rica, based on your preferred cabin class, be it economy, premium economy, business, or first class.
Seattle and Costa Rica flights
Browse other Seattle and Costa Rica flight options. Last updated on September 24, 2026.
Popular flight searches
Check out other popular destinations found by fellow travelers in 2026
Top 7 airlines flying from Seattle to Costa Rica
Discover the top 7 airlines that operate flights from Seattle 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 24, 2026.
| Airline | Cheapest | Average | Flexibility | On-time |
|---|---|---|---|---|
| Cheapest$316 | Average$708 | FlexibilityNo cancel fee | On-time71% | |
| Cheapest$357 | Average$713 | FlexibilityNo cancel fee | On-time75% | |
| Cheapest$362 | Average$682 | FlexibilityNo cancel fee | On-time62% | |
| Cheapest$384 | Average$740 | FlexibilityNo cancel fee | On-time67% | |
| Cheapest$390 | Average$814 | FlexibilityNo cancel fee | On-timeN/A | |
| Cheapest$390 | Average$708 | FlexibilityNo cancel fee | On-time69% | |
| Cheapest$516 | Average$703 | FlexibilityNo cancel fee | On-time63% |