$269+ 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 4/16. Fares are subject to change and may not be available on all flights or dates of travel.
SEA — SJO
Dec 12 — Dec 191
Round-trip
1 adult, Economy
We work with more than 300 partners to bring you better travel deals
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
Cheapest
Best
Last-minute
One-way
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 November 12, 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 November 12, 2026.
This Expedia deal was found by Cheapflights users on 11/11. 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 Expedia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 11/268:13 am -
1 stop28h 02m
Wed 3/107:00 am -
1 stop17h 24m
Deal found 11/11![Multiple Airlines logo]()
$628
This United Airlines deal was found by Cheapflights users on 11/7. 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 12/57:30 pm -
1 stop11h 02m
Sat 12/129:40 am -
1 stop13h 07m
Deal found 11/7![United Airlines logo]()
$631
This Avianca deal was found by Cheapflights users on 11/11. 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.
Fri 11/279:28 pm -
1 stop14h 47m
Wed 12/27:00 am -
1 stop17h 20m
Deal found 11/11![Multiple Airlines logo]()
$632
This American Airlines deal was found by Cheapflights users on 11/11. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 11/285:10 am -
1 stop15h 37m
Fri 12/1811:35 am -
1 stop15h 24m
Deal found 11/11![American Airlines logo]()
$640
This United Airlines deal was found by Cheapflights users on 11/9. 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 12/27:30 pm -
1 stop11h 02m
Wed 12/98:45 am -
2 stops14h 36m
Deal found 11/9![United Airlines logo]()
$644
This Delta deal was found by Cheapflights users on 11/11. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 11/236:00 am -
1 stop14h 15m
Thu 11/267:00 am -
1 stop11h 38m
Deal found 11/11![Delta logo]()
$649
This American Airlines deal was found by Cheapflights users on 11/9. 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 12/3010:29 pm -
1 stop12h 02m
Fri 1/153:00 pm -
1 stop22h 30m
Deal found 11/9![American Airlines logo]()
$650
This United Airlines deal was found by Cheapflights users on 11/11. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 12/27:30 pm -
1 stop11h 02m
Mon 12/78:45 am -
2 stops15h 13m
Deal found 11/11![United Airlines logo]()
$653
This Avianca deal was found by Cheapflights users on 11/6. 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 11/299:28 pm -
1 stop14h 47m
Tue 12/157:00 am -
1 stop17h 20m
Deal found 11/6![Multiple Airlines logo]()
$657
This United Airlines deal was found by Cheapflights users on 11/10. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 11/127:05 am -
1 stop11h 34m
Thu 11/192:25 pm -
1 stop10h 26m
Deal found 11/10![United Airlines logo]()
$660
This American Airlines deal was found by Cheapflights users on 11/10. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 11/1211:34 pm -
2 stops13h 15m
Thu 11/196:00 am -
2 stops16h 50m
Deal found 11/10![American Airlines logo]()
$664
This Air Canada deal was found by Cheapflights users on 11/11. 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 Air Canada is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 12/37:05 pm -
2 stops17h 05m
Thu 12/178:35 am -
1 stop15h 32m
Deal found 11/11![Air Canada logo]()
$684
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 November 12, 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 November 12, 2026.
This Southwest deal was found by Cheapflights users on 11/10. 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 Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 2/194:20 pm -
2 stops17h 10m
Fri 2/262:45 pm -
2 stops21h 25m
Deal found 11/10![Southwest logo]()
$613
This Alaska Airlines deal was found by Cheapflights users on 11/9. 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 1/236:00 am -
1 stop15h 39m
Thu 1/281:23 am -
1 stop13h 04m
Deal found 11/9![Alaska Airlines logo]()
$649
This Delta deal was found by Cheapflights users on 11/11. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 11/236:00 am -
1 stop14h 15m
Wed 11/257:00 am -
1 stop11h 38m
Deal found 11/11![Delta logo]()
$649
This United Airlines deal was found by Cheapflights users on 11/11. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 11/273:35 pm -
2 stops12h 50m
Wed 12/29:40 am -
1 stop10h 48m
Deal found 11/11![United Airlines logo]()
$684
This Alaska Airlines deal was found by Cheapflights users on 11/10. 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.
Tue 2/238:15 pm -
1 stop9h 10m
Mon 3/16:43 pm -
1 stop16h 11m
Deal found 11/10![Alaska Airlines logo]()
$691
This Delta deal was found by Cheapflights users on 11/9. 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 1/193:55 pm -
1 stop18h 40m
Thu 1/282:00 pm -
1 stop11h 25m
Deal found 11/9![Delta logo]()
$707
This United Airlines deal was found by Cheapflights users on 11/9. 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 1/55:44 pm -
2 stops17h 26m
Thu 1/142:20 pm -
1 stop10h 34m
Deal found 11/9![United Airlines logo]()
$707
This Delta deal was found by Cheapflights users on 11/11. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 1/53:55 pm -
1 stop18h 40m
Fri 1/152:00 pm -
1 stop11h 15m
Deal found 11/11![Delta logo]()
$707
This United Airlines deal was found by Cheapflights users on 11/8. 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 4/285:07 am -
1 stop9h 12m
Wed 5/121:20 pm -
2 stops20h 47m
Deal found 11/8![United Airlines logo]()
$711
This Alaska Airlines deal was found by Cheapflights users on 11/6. 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.
Sun 2/287:00 am -
2 stops14h 57m
Sun 3/1412:45 am -
2 stops14h 11m
Deal found 11/6![Alaska Airlines logo]()
$715
This Delta deal was found by Cheapflights users on 11/8. 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 2/13:55 pm -
1 stop18h 40m
Tue 2/92:00 pm -
1 stop11h 25m
Deal found 11/8![Delta logo]()
$707
This United Airlines deal was found by Cheapflights users on 11/7. 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 1/95:44 pm -
1 stop12h 48m
Sat 1/162:25 pm -
1 stop10h 29m
Deal found 11/7![United Airlines logo]()
$713
This Alaska Airlines deal was found by Cheapflights users on 11/10. 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.
Tue 2/28:22 pm -
2 stops22h 08m
Mon 2/88:33 am -
1 stop26h 20m
Deal found 11/10![Alaska Airlines logo]()
$716
This Delta deal was found by Cheapflights users on 11/9. 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 1/216:00 am -
1 stop13h 49m
Sun 1/317:00 am -
1 stop18h 25m
Deal found 11/9![Delta logo]()
$716
This Alaska Airlines deal was found by Cheapflights users on 11/9. 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 1/207:46 am -
2 stops13h 53m
Tue 1/261:23 am -
2 stops19h 20m
Deal found 11/9![Alaska Airlines logo]()
$721
This United Airlines deal was found by Cheapflights users on 11/10. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 2/77:28 pm -
2 stops15h 42m
Mon 2/152:20 pm -
1 stop10h 39m
Deal found 11/10![United Airlines logo]()
$736
This Delta deal was found by Cheapflights users on 11/9. 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 1/2211:10 pm -
1 stop15h 15m
Fri 1/293:25 pm -
1 stop20h 40m
Deal found 11/9![Delta logo]()
$732
This Alaska Airlines deal was found by Cheapflights users on 11/11. 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 Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 2/46:00 am -
1 stop12h 30m
Mon 2/88:33 am -
1 stop26h 20m
Deal found 11/11![Alaska Airlines logo]()
$749
This United Airlines deal was found by Cheapflights users on 11/10. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 2/193:32 pm -
2 stops12h 53m
Wed 3/312:35 pm -
2 stops23h 01m
Deal found 11/10![United Airlines logo]()
$765
This Alaska Airlines deal was found by Cheapflights users on 11/11. 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 Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 12/45:42 pm -
1 stop28h 44m
Sat 12/121:46 am -
1 stop13h 12m
Deal found 11/11![Alaska Airlines logo]()
$844
This United Airlines deal was found by Cheapflights users on 11/9. 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 12/307:10 pm -
2 stops21h 06m
Fri 1/151:25 pm -
2 stops33h 37m
Deal found 11/9![United Airlines logo]()
$862
This Alaska Airlines deal was found by Cheapflights users on 11/10. 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.
Tue 2/98:15 am -
1 stop13h 24m
Thu 2/181:41 am -
1 stop16h 22m
Deal found 11/10![Alaska Airlines logo]()
$867
Last-minute flights from Seattle to Costa RicaDiscover last-minute flight deals from Seattle to Costa Rica. Data last updated November 12, 2026 and is based on user searches.
Discover last-minute flight deals from Seattle to Costa Rica. Data last updated November 12, 2026 and is based on user searches.
This United Airlines deal was found by Cheapflights users on 11/10. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 11/127:05 am -
1 stop11h 34m
Thu 11/192:25 pm -
1 stop10h 26m
Deal found 11/10![United Airlines logo]()
$660
This American Airlines deal was found by Cheapflights users on 11/10. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 11/1211:34 pm -
2 stops13h 15m
Thu 11/196:00 am -
2 stops16h 50m
Deal found 11/10![American Airlines logo]()
$664
This Delta deal was found by Cheapflights users on 11/11. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 11/236:00 am -
1 stop14h 15m
Thu 11/267:00 am -
1 stop11h 38m
Deal found 11/11![Delta logo]()
$649
This Expedia deal was found by Cheapflights users on 11/11. 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 Expedia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 11/268:13 am -
1 stop28h 02m
Wed 3/107:00 am -
1 stop17h 24m
Deal found 11/11![Multiple Airlines logo]()
$628
This Avianca deal was found by Cheapflights users on 11/11. 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.
Fri 11/279:28 pm -
1 stop14h 47m
Wed 12/27:00 am -
1 stop17h 20m
Deal found 11/11![Multiple Airlines logo]()
$632
This American Airlines deal was found by Cheapflights users on 11/11. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 11/285:10 am -
1 stop15h 37m
Fri 12/1811:35 am -
1 stop15h 24m
Deal found 11/11![American Airlines logo]()
$640
This Avianca deal was found by Cheapflights users on 11/6. 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 11/299:28 pm -
1 stop14h 47m
Tue 12/157:00 am -
1 stop17h 20m
Deal found 11/6![Multiple Airlines logo]()
$657
This United Airlines deal was found by Cheapflights users on 11/9. 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 12/27:30 pm -
1 stop11h 02m
Mon 12/78:45 am -
2 stops15h 13m
Deal found 11/9![United Airlines logo]()
$644
This Air Canada deal was found by Cheapflights users on 11/11. 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 Air Canada is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 12/37:05 pm -
2 stops17h 05m
Thu 12/178:35 am -
1 stop15h 32m
Deal found 11/11![Air Canada logo]()
$684
This Air Canada deal was found by Cheapflights users on 11/11. 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 Air Canada is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 12/410:10 am -
2 stops26h 10m
Fri 12/113:10 pm -
2 stops25h 27m
Deal found 11/11![Air Canada logo]()
$687
This United Airlines deal was found by Cheapflights users on 11/7. 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 12/53:28 pm -
2 stops12h 57m
Sat 12/129:40 am -
1 stop10h 48m
Deal found 11/7![United Airlines logo]()
$631
This American Airlines deal was found by Cheapflights users on 11/9. 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 12/3010:29 pm -
1 stop12h 02m
Fri 1/153:00 pm -
1 stop22h 30m
Deal found 11/9![American Airlines logo]()
$650
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 November 12, 2026.
Search for one-way flight options from Seattle to Costa Rica. Find affordable one-way fares based on user searches. Data last updated November 12, 2026.
This Sun Country Air deal was found by Cheapflights users on 11/10. 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 Sun Country Air is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 4/166:20 pm -
1 stop18h 19m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 11/10![Sun Country Air logo]()
$269
This Southwest deal was found by Cheapflights users on 11/10. 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 Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 5/36:15 am -
2 stops11h 45m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 11/10![Southwest logo]()
$279
This Sun Country Air deal was found by Cheapflights users on 11/8. 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 Sun Country Air is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 1/36:28 pm -
1 stop18h 24m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 11/8![Sun Country Air logo]()
$288
This Delta deal was found by Cheapflights users on 11/10. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 5/39:20 pm -
1 stop13h 35m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 11/10![Delta logo]()
$294
This Alaska Airlines deal was found by Cheapflights users on 11/9. 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 12/309:59 pm -
2 stops24h 17m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 11/9![Alaska Airlines logo]()
$299
This United Airlines deal was found by Cheapflights users on 11/8. 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 12/53:28 pm -
1 stop15h 04m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 11/8![United Airlines logo]()
$304
This American Airlines deal was found by Cheapflights users on 11/8. 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 2/76:19 pm -
2 stops15h 59m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 11/8![American Airlines logo]()
$305
This Booking.com deal was found by Cheapflights users on 11/10. 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 Booking.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 1/166:23 pm -
1 stop24h 07m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 11/10![Alaska Airlines logo]()
$313
This Air Canada deal was found by Cheapflights users on 11/7. 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 Air Canada is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 4/310:10 am -
2 stops25h 55m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 11/7![Air Canada logo]()
$317
This Southwest deal was found by Cheapflights users on 11/9. 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 3/218:55 pm -
2 stops21h 45m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 11/9![Southwest logo]()
$319
This Travelocity deal was found by Cheapflights users on 11/7. 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 Travelocity is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 1/236:00 am -
1 stop12h 30m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 11/7![Alaska Airlines logo]()
$329
This Air Canada deal was found by Cheapflights users on 11/11. 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 Air Canada is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 11/287:45 am -
1 stop28h 25m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 11/11![Air Canada logo]()
$333
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 November 12, 2026.
Most accurate provider | Ovago 3 stars |
|---|---|
Most trusted provider | Ovago 3 stars |
Round-trip from | $558 (flugladen.de) |
One-way from | $269 (Sun Country Air) |
Popular in | March |
Cheapest in | January |
Average price | $674 |
Good round-trip deal | $894 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 November 12, 2026.
Use the filters below to find and compare flights from Seattle 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
Sun 1/3
6:28 pm-2:52 pm
1 stop18h 24m
Liberia
Wed 12/31
12:00 am-10:00 pm
Nonstop0h 00m
$288
SeattleSan José
SEA Seattle/Tacoma Intl - SJO San José Juan Santamaria Intl
SEASJO
Seattle/Tacoma Intl
Thu 12/31
5:00 am-8:39 pm
2 stops13h 39m
San José Juan Santamaria Intl
Wed 12/31
12:00 am-10:00 pm
Nonstop0h 00m
$294
SeattleSan José
SEA Seattle/Tacoma Intl - SJO San José Juan Santamaria Intl
SEASJO
Seattle/Tacoma Intl
Mon 1/11
10:21 am-8:32 am
1 stop20h 11m
San José Juan Santamaria Intl
Wed 12/31
12:00 am-10:00 pm
Nonstop0h 00m
$294
SeattleSan José
SEA Seattle/Tacoma Intl - SJO San José Juan Santamaria Intl
SEASJO
Seattle/Tacoma Intl
Wed 12/30
9:59 pm-12:16 am
2 stops24h 17m
San José Juan Santamaria Intl
Wed 12/31
12:00 am-10:00 pm
Nonstop0h 00m
$299
SeattleSan José
SEA Seattle/Tacoma Intl - SJO San José Juan Santamaria Intl
SEASJO
Seattle/Tacoma Intl
Sat 12/5
3:28 pm-8:32 am
1 stop15h 04m
San José Juan Santamaria Intl
Wed 12/31
12:00 am-10:00 pm
Nonstop0h 00m
$304
SeattleSan José
SEA Seattle/Tacoma Intl - SJO San José Juan Santamaria Intl
SEASJO
Seattle/Tacoma Intl
Sun 2/7
6:19 pm-12:18 pm
2 stops15h 59m
San José Juan Santamaria Intl
Wed 12/31
12:00 am-10:00 pm
Nonstop0h 00m
$305
SeattleLiberia
SEA Seattle/Tacoma Intl - LIR Liberia
SEALIR
Seattle/Tacoma Intl
Sat 1/16
6:23 pm-8:30 pm
1 stop24h 07m
Liberia
Wed 12/31
12:00 am-10:00 pm
Nonstop0h 00m
$313
SeattleLiberia
SEA Seattle/Tacoma Intl - LIR Liberia
SEALIR
Seattle/Tacoma Intl
Wed 4/14
7:55 pm-5:25 pm
1 stop20h 30m
Liberia
Wed 12/31
12:00 am-10:00 pm
Nonstop0h 00m
$347
SeattleLiberia
SEA Seattle/Tacoma Intl - LIR Liberia
SEALIR
Seattle/Tacoma Intl
Sat 1/9
2:22 pm-8:30 pm
1 stop28h 08m
Liberia
Wed 12/31
12:00 am-10:00 pm
Nonstop0h 00m
$347
SeattleSan José
SEA Seattle/Tacoma Intl - SJO San José Juan Santamaria Intl
SEASJO
Seattle/Tacoma Intl
Mon 11/30
9:50 pm-12:20 pm
2 stops12h 30m
San José Juan Santamaria Intl
Wed 12/31
12:00 am-10:00 pm
Nonstop0h 00m
$349
Showing 1-10 of 43 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 $606). Flying from Seattle to Costa Rica in April is currently the most expensive (average of $822). 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 November 12, 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.
Crew
8.5
Entertainment
7.0
Comfort
7.8
Food
7.0
Boarding
8.1
Overall
7.9
Reviews
1 / 20
10.0
ExcellentParduman,Nov 2026
SEA - LHR
Crew
8.5
Entertainment
7.0
Comfort
7.8
Food
7.0
Boarding
8.1
Overall
7.9
Reviews
1 / 20
10.0
ExcellentParduman,Nov 2026
SEA - LHR
Crew
8.5
Entertainment
7.0
Comfort
7.8
Food
7.0
Boarding
8.1
Overall
7.9
Reviews
1 / 20
10.0
ExcellentParduman,Nov 2026
SEA - LHR
Crew
8.5
Entertainment
7.0
Comfort
7.8
Food
7.0
Boarding
8.1
Overall
7.9
Reviews
1 / 20
10.0
ExcellentParduman,Nov 2026
SEA - LHR
Crew
8.5
Entertainment
7.0
Comfort
7.8
Food
7.0
Boarding
8.1
Overall
7.9
Reviews
1 / 20
10.0
ExcellentParduman,Nov 2026
SEA - LHR
Crew
8.5
Entertainment
7.0
Comfort
7.8
Food
7.0
Boarding
8.1
Overall
7.9
Reviews
1 / 20
10.0
ExcellentParduman,Nov 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
Toggle through the tabs below to find thousands of options on Cheapflights for your next trip.
Alternative routes
Complete your trip
Flights by cabin class
Other flight options
Popular flights
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 November 12, 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 November 12, 2026.
| Airline | Cheapest | Average | Flexibility | On-time |
|---|---|---|---|---|
| Cheapest$362 | Average$682 | FlexibilityNo cancel fee | On-time62% | |
| Cheapest$366 | Average$736 | FlexibilityNo cancel fee | On-time71% | |
| Cheapest$384 | Average$739 | FlexibilityNo cancel fee | On-time67% | |
| Cheapest$390 | Average$877 | FlexibilityNo cancel fee | On-timeN/A | |
| Cheapest$392 | Average$757 | FlexibilityNo cancel fee | On-time75% | |
| Cheapest$414 | Average$729 | FlexibilityNo cancel fee | On-time69% | |
| Cheapest$506 | Average$703 | FlexibilityNo cancel fee | On-time63% |