$199+ Cheap flights from Seattle (SEA) to Costa Rica
This is the cheapest one-way flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 5/12. Fares are subject to change and may not be available on all flights or dates of travel.
SEA — SJO
Jun 3 — Jun 101
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 May 4, 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 May 4, 2026.
This FlightHub deal was found by Cheapflights users on 4/30. 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.
Thu 10/89:50 am
SEA
- SJO
1 stop12h 25m
Multiple Airlines
Sun 10/114:35 pm
SJO
- SEA
1 stop18h 40m
Multiple Airlines
Deal found 4/30![Multiple Airlines logo]()
$475
This Avianca deal was found by Cheapflights users on 4/30. 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 5/268:00 am
SEA
- SJO
2 stops14h 15m
Multiple Airlines
Sat 5/307:45 am
SJO
- SEA
1 stop15h 04m
Multiple Airlines
Deal found 4/30![Multiple Airlines logo]()
$477
This Avianca deal was found by Cheapflights users on 4/30. 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 5/271:50 pm
SEA
- SJO
2 stops17h 40m
Multiple Airlines
Wed 6/34:35 pm
SJO
- SEA
2 stops18h 37m
Multiple Airlines
Deal found 4/30![Multiple Airlines logo]()
$479
This FlightHub deal was found by Cheapflights users on 5/1. 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 5/159:15 pm
SEA
- SJO
2 stops25h 00m
Multiple Airlines
Fri 5/224:35 pm
SJO
- SEA
2 stops28h 06m
Multiple Airlines
Deal found 5/1![Multiple Airlines logo]()
$480
This Avianca deal was found by Cheapflights users on 4/30. 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 5/239:02 am
SEA
- SJO
2 stops13h 13m
Multiple Airlines
Tue 6/27:45 am
SJO
- SEA
1 stop15h 04m
Multiple Airlines
Deal found 4/30![Multiple Airlines logo]()
$486
This Avianca deal was found by Cheapflights users on 5/3. 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 5/268:00 am
SEA
- SJO
2 stops14h 15m
Multiple Airlines
Tue 6/25:45 am
SJO
- SEA
2 stops14h 11m
Multiple Airlines
Deal found 5/3![Multiple Airlines logo]()
$487
This Avianca deal was found by Cheapflights users on 4/29. 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 8/157:26 am
SEA
- SJO
2 stops14h 49m
Multiple Airlines
Sun 8/235:05 am
SJO
- SEA
2 stops13h 21m
Multiple Airlines
Deal found 4/29![Multiple Airlines logo]()
$489
This FlightHub deal was found by Cheapflights users on 5/2. 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.
Tue 9/16:50 am
SEA
- SJO
1 stop15h 25m
Multiple Airlines
Sat 9/55:45 am
SJO
- SEA
1 stop16h 57m
Multiple Airlines
Deal found 5/2![Multiple Airlines logo]()
$490
This FlightHub deal was found by Cheapflights users on 5/1. 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.
Tue 5/56:25 am
SEA
- SJO
2 stops16h 15m
Multiple Airlines
Thu 5/75:45 am
SJO
- SEA
2 stops13h 55m
Multiple Airlines
Deal found 5/1![Multiple Airlines logo]()
$492
This Expedia deal was found by Cheapflights users on 4/30. 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.
Mon 8/317:07 pm
SEA
- SJO
3 stops15h 38m
Multiple Airlines
Thu 10/15:45 am
SJO
- SEA
2 stops14h 57m
Multiple Airlines
Deal found 4/30![Multiple Airlines logo]()
$493
This FlightHub deal was found by Cheapflights users on 5/1. 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.
Thu 5/289:02 am
SEA
- SJO
2 stops13h 13m
Multiple Airlines
Tue 6/25:45 am
SJO
- SEA
2 stops14h 11m
Multiple Airlines
Deal found 5/1![Multiple Airlines logo]()
$494
This Air Canada deal was found by Cheapflights users on 4/29. 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.
Mon 11/210:35 am
SEA
- LIR
2 stops25h 05m
Air Canada
Mon 11/92:55 pm
LIR
- SEA
1 stop33h 21m
Air Canada
Deal found 4/29![Air Canada logo]()
$605
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 May 4, 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 May 4, 2026.
This Alaska Airlines deal was found by Cheapflights users on 4/30. 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 5/2611:38 am
SEA
- SJO
1 stop10h 55m
Alaska Airlines
Mon 6/812:53 am
SJO
- SEA
1 stop12h 08m
Alaska Airlines
Deal found 4/30![Alaska Airlines logo]()
$572
This Justfly.com deal was found by Cheapflights users on 4/29. 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.
Sun 5/3111:52 pm
SEA
- LIR
1 stop11h 48m
JetBlue
Sat 6/62:30 pm
LIR
- SEA
1 stop31h 26m
JetBlue
Deal found 4/29![JetBlue logo]()
$710
This Southwest deal was found by Cheapflights users on 5/3. 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.
Thu 6/185:15 am
SEA
- SJO
2 stops13h 25m
Southwest
Mon 6/228:45 am
SJO
- SEA
2 stops14h 05m
Southwest
Deal found 5/3![Southwest logo]()
$721
This FlightHub deal was found by Cheapflights users on 4/29. 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.
Mon 7/209:18 pm
SEA
- SJO
2 stops24h 57m
Multiple Airlines
Tue 7/287:45 am
SJO
- SEA
1 stop15h 15m
Multiple Airlines
Deal found 4/29![Multiple Airlines logo]()
$723
This American Airlines deal was found by Cheapflights users on 4/29. 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 5/166:19 pm
SEA
- LIR
2 stops16h 03m
American Airlines
Sat 5/232:19 pm
LIR
- SEA
1 stop11h 40m
American Airlines
Deal found 4/29![American Airlines logo]()
$752
This United Airlines deal was found by Cheapflights users on 5/2. 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 7/27:05 pm
SEA
- SJO
1 stop11h 10m
United Airlines
Sun 7/512:30 am
SJO
- SEA
1 stop11h 17m
United Airlines
Deal found 5/2![United Airlines logo]()
$780
This Alaska Airlines deal was found by Cheapflights users on 4/30. 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 5/267:05 am
SEA
- SJO
2 stops15h 28m
Alaska Airlines
Tue 6/91:06 am
SJO
- SEA
1 stop20h 56m
Alaska Airlines
Deal found 4/30![Alaska Airlines logo]()
$577
This Alaska Airlines deal was found by Cheapflights users on 4/29. 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 5/278:30 pm
SEA
- SJO
2 stops26h 03m
Alaska Airlines
Tue 6/212:53 am
SJO
- SEA
2 stops19h 05m
Alaska Airlines
Deal found 4/29![Alaska Airlines logo]()
$577
This Southwest deal was found by Cheapflights users on 5/2. 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 7/86:15 am
SEA
- SJO
2 stops12h 25m
Southwest
Tue 7/148:45 am
SJO
- SEA
2 stops16h 35m
Southwest
Deal found 5/2![Southwest logo]()
$755
This Alaska Airlines deal was found by Cheapflights users on 4/29. 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 5/138:00 am
SEA
- SJO
1 stop14h 33m
Alaska Airlines
Fri 5/1512:53 am
SJO
- SEA
1 stop16h 43m
Alaska Airlines
Deal found 4/29![Alaska Airlines logo]()
$644
This United Airlines deal was found by Cheapflights users on 5/2. 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 5/911:59 pm
SEA
- LIR
1 stop11h 11m
United Airlines
Sat 5/161:20 pm
LIR
- SEA
1 stop10h 32m
United Airlines
Deal found 5/2![United Airlines logo]()
$825
This Alaska Airlines deal was found by Cheapflights users on 4/30. 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 5/279:15 pm
SEA
- SJO
1 stop25h 18m
Alaska Airlines
Sun 6/712:53 am
SJO
- SEA
2 stops19h 01m
Alaska Airlines
Deal found 4/30![Alaska Airlines logo]()
$644
This Southwest deal was found by Cheapflights users on 4/29. 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 6/197:20 pm
SEA
- LIR
2 stops16h 45m
Southwest
Sat 6/272:30 pm
LIR
- SEA
1 stop10h 35m
Southwest
Deal found 4/29![Southwest logo]()
$783
This United Airlines deal was found by Cheapflights users on 4/29. 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 7/95:00 pm
SEA
- LIR
1 stop15h 50m
United Airlines
Sun 7/198:30 am
LIR
- SEA
1 stop17h 59m
United Airlines
Deal found 4/29![United Airlines logo]()
$826
This Alaska Airlines deal was found by Cheapflights users on 5/3. 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 5/187:00 am
SEA
- SJO
1 stop15h 33m
Alaska Airlines
Sat 5/2312:53 am
SJO
- SEA
1 stop13h 03m
Alaska Airlines
Deal found 5/3![Alaska Airlines logo]()
$655
This Southwest deal was found by Cheapflights users on 4/30. 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 6/127:20 pm
SEA
- SJO
2 stops15h 50m
Southwest
Sat 6/208:45 am
SJO
- SEA
1 stop12h 25m
Southwest
Deal found 4/30![Southwest logo]()
$796
This United Airlines deal was found by Cheapflights users on 5/1. 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 7/165:00 am
SEA
- LIR
1 stop9h 19m
United Airlines
Sat 7/188:30 am
LIR
- SEA
1 stop17h 43m
United Airlines
Deal found 5/1![United Airlines logo]()
$826
This Alaska Airlines deal was found by Cheapflights users on 5/3. 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 6/38:20 pm
SEA
- SJO
1 stop26h 13m
Alaska Airlines
Sun 6/712:53 am
SJO
- SEA
1 stop16h 43m
Alaska Airlines
Deal found 5/3![Alaska Airlines logo]()
$707
This Alaska Airlines deal was found by Cheapflights users on 5/1. 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 8/110:03 am
SEA
- LIR
1 stop19h 34m
Alaska Airlines
Mon 8/106:39 pm
LIR
- SEA
2 stops17h 36m
Alaska Airlines
Deal found 5/1![Alaska Airlines logo]()
$772
This Alaska Airlines deal was found by Cheapflights users on 5/3. 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 7/2910:03 am
SEA
- LIR
1 stop19h 34m
Alaska Airlines
Mon 8/106:39 pm
LIR
- SEA
2 stops17h 36m
Alaska Airlines
Deal found 5/3![Alaska Airlines logo]()
$792
Last-minute flights from Seattle to Costa RicaDiscover last-minute flight deals from Seattle to Costa Rica. Data last updated May 4, 2026 and is based on user searches.
Discover last-minute flight deals from Seattle to Costa Rica. Data last updated May 4, 2026 and is based on user searches.
This FlightHub deal was found by Cheapflights users on 5/1. 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.
Tue 5/56:25 am
SEA
- SJO
2 stops16h 15m
Multiple Airlines
Thu 5/75:45 am
SJO
- SEA
2 stops13h 55m
Multiple Airlines
Deal found 5/1![Multiple Airlines logo]()
$492
This Avianca deal was found by Cheapflights users on 5/2. 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 5/62:20 pm
SEA
- SJO
2 stops17h 10m
Multiple Airlines
Fri 5/87:45 am
SJO
- SEA
1 stop15h 02m
Multiple Airlines
Deal found 5/2![Multiple Airlines logo]()
$502
This FlightHub deal was found by Cheapflights users on 5/1. 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 5/159:15 pm
SEA
- SJO
2 stops25h 00m
Multiple Airlines
Fri 5/224:35 pm
SJO
- SEA
2 stops28h 06m
Multiple Airlines
Deal found 5/1![Multiple Airlines logo]()
$480
This Expedia deal was found by Cheapflights users on 5/3. 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.
Mon 5/186:14 pm
SEA
- SJO
2 stops16h 16m
Multiple Airlines
Sun 5/245:05 am
SJO
- SEA
2 stops14h 51m
Multiple Airlines
Deal found 5/3![Multiple Airlines logo]()
$505
This FlightHub deal was found by Cheapflights users on 4/30. 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 5/229:15 pm
SEA
- SJO
2 stops25h 00m
Multiple Airlines
Tue 6/25:45 am
SJO
- SEA
2 stops16h 22m
Multiple Airlines
Deal found 4/30![Multiple Airlines logo]()
$503
This Avianca deal was found by Cheapflights users on 4/30. 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 5/239:02 am
SEA
- SJO
2 stops13h 13m
Multiple Airlines
Tue 6/27:45 am
SJO
- SEA
1 stop15h 04m
Multiple Airlines
Deal found 4/30![Multiple Airlines logo]()
$486
This Avianca deal was found by Cheapflights users on 4/30. 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 5/268:00 am
SEA
- SJO
2 stops14h 15m
Multiple Airlines
Sat 5/307:45 am
SJO
- SEA
1 stop15h 04m
Multiple Airlines
Deal found 4/30![Multiple Airlines logo]()
$477
This Avianca deal was found by Cheapflights users on 5/3. 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 5/268:00 am
SEA
- SJO
2 stops14h 15m
Multiple Airlines
Tue 6/25:45 am
SJO
- SEA
2 stops14h 11m
Multiple Airlines
Deal found 5/3![Multiple Airlines logo]()
$487
This Kiwi.com deal was found by Cheapflights users on 5/1. 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.
Tue 5/267:35 pm
SEA
- LIR
2 stops15h 50m
Multiple Airlines
Thu 6/411:20 am
LIR
- SEA
1 stop32h 15m
Multiple Airlines
Deal found 5/1![Multiple Airlines logo]()
$679
This Avianca deal was found by Cheapflights users on 4/30. 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 5/271:50 pm
SEA
- SJO
2 stops17h 40m
Multiple Airlines
Wed 6/34:35 pm
SJO
- SEA
2 stops18h 37m
Multiple Airlines
Deal found 4/30![Multiple Airlines logo]()
$479
This FlightHub deal was found by Cheapflights users on 5/1. 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.
Thu 5/289:02 am
SEA
- SJO
2 stops13h 13m
Multiple Airlines
Tue 6/25:45 am
SJO
- SEA
2 stops14h 11m
Multiple Airlines
Deal found 5/1![Multiple Airlines logo]()
$494
This Justfly.com deal was found by Cheapflights users on 5/1. 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.
Thu 5/2811:52 pm
SEA
- LIR
1 stop11h 48m
JetBlue
Mon 6/12:00 pm
LIR
- SEA
1 stop31h 56m
JetBlue
Deal found 5/1![JetBlue logo]()
$672
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 May 4, 2026.
Search for one-way flight options from Seattle to Costa Rica. Find affordable one-way fares based on user searches. Data last updated May 4, 2026.
This eDestinos deal was found by Cheapflights users on 4/29. 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 5/126:25 am
SEA
- SJO
1 stop15h 50m
Multiple Airlines
Deal found 4/29![Multiple Airlines logo]()
$199
This Avianca deal was found by Cheapflights users on 4/30. 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 5/169:02 am
SEA
- SJO
2 stops13h 13m
Multiple Airlines
Deal found 4/30![Multiple Airlines logo]()
$201
This eDestinos deal was found by Cheapflights users on 4/30. 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 5/3010:50 pm
SEA
- SJO
1 stop32h 40m
Multiple Airlines
Deal found 4/30![Multiple Airlines logo]()
$220
This FlightHub deal was found by Cheapflights users on 4/30. 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.
Tue 5/268:00 am
SEA
- SJO
2 stops14h 15m
Multiple Airlines
Deal found 4/30![Multiple Airlines logo]()
$222
This eDestinos deal was found by Cheapflights users on 4/30. 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 5/127:40 am
SEA
- SJO
1 stop14h 35m
Avianca
Deal found 4/30![Avianca logo]()
$224
This Avianca deal was found by Cheapflights users on 4/30. 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 6/122:02 pm
SEA
- SJO
2 stops17h 28m
Multiple Airlines
Deal found 4/30![Multiple Airlines logo]()
$225
This Kiwi.com deal was found by Cheapflights users on 5/1. 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.
Fri 6/197:41 pm
SEA
- SJO
2 stops35h 39m
Frontier
Deal found 5/1![Frontier logo]()
$229
This Kiwi.com deal was found by Cheapflights users on 5/4. 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.
Tue 7/218:12 pm
SEA
- SJO
2 stops35h 08m
Frontier
Deal found 5/4![Frontier logo]()
$234
This Kiwi.com deal was found by Cheapflights users on 4/30. 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.
Tue 5/2610:30 am
SEA
- LIR
2 stops24h 55m
WestJet
Deal found 4/30![WestJet logo]()
$301
This Justfly.com deal was found by Cheapflights users on 4/30. 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 5/2611:52 pm
SEA
- LIR
1 stop11h 48m
JetBlue
Deal found 4/30![JetBlue logo]()
$303
This Kiwi.com deal was found by Cheapflights users on 4/29. 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.
Fri 6/57:35 pm
SEA
- LIR
2 stops15h 50m
WestJet
Deal found 4/29![WestJet logo]()
$304
This Southwest deal was found by Cheapflights users on 4/30. 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 6/148:05 pm
SEA
- LIR
2 stops16h 05m
Southwest
Deal found 4/30![Southwest logo]()
$318
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 May 4, 2026.
Most accurate provider | FlightHub 3 stars |
|---|---|
Most trusted provider | FlightHub 3 stars |
Round-trip from | $475 (FlightHub) |
One-way from | $199 (eDestinos) |
Popular in | April |
Cheapest in | October |
Average price | $592 |
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 2,558,603 searches. Data last updated May 4, 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
SeattleSan José
SEA - SJO
SEASJO
Seattle/Tacoma Intl
Tue 5/26
11:38 am-11:33 pm
1 stop10h 55m
San José Juan Santamaria Intl
Mon 6/8
12:53 am-12:01 pm
1 stop12h 08m
$572
SeattleSan José
SEA - SJO
SEASJO
Seattle/Tacoma Intl
Tue 5/26
7:05 am-11:33 pm
2 stops15h 28m
San José Juan Santamaria Intl
Tue 6/9
1:06 am-9:02 pm
1 stop20h 56m
$577
SeattleSan José
SEA - SJO
SEASJO
Seattle/Tacoma Intl
Wed 5/27
8:30 pm-11:33 pm
2 stops26h 03m
San José Juan Santamaria Intl
Tue 6/2
12:53 am-6:58 pm
2 stops19h 05m
$577
SeattleSan José
SEA - SJO
SEASJO
Seattle/Tacoma Intl
Wed 5/13
8:00 am-11:33 pm
1 stop14h 33m
San José Juan Santamaria Intl
Fri 5/15
12:53 am-4:36 pm
1 stop16h 43m
$644
SeattleSan José
SEA - SJO
SEASJO
Seattle/Tacoma Intl
Wed 5/27
9:15 pm-11:33 pm
1 stop25h 18m
San José Juan Santamaria Intl
Sun 6/7
12:53 am-6:54 pm
2 stops19h 01m
$644
SeattleSan José
SEA - SJO
SEASJO
Seattle/Tacoma Intl
Mon 5/18
7:00 am-11:33 pm
1 stop15h 33m
San José Juan Santamaria Intl
Sat 5/23
12:53 am-12:56 pm
1 stop13h 03m
$655
SeattleSan José
SEA - SJO
SEASJO
Seattle/Tacoma Intl
Wed 6/3
8:20 pm-11:33 pm
1 stop26h 13m
San José Juan Santamaria Intl
Sun 6/7
12:53 am-4:36 pm
1 stop16h 43m
$707
SeattleLiberia
SEA - LIR
SEALIR
Seattle/Tacoma Intl
Sun 5/31
11:52 pm-12:40 pm
1 stop11h 48m
Liberia
Sat 6/6
2:30 pm-8:56 pm
1 stop31h 26m
$710
SeattleSan José
SEA - SJO
SEASJO
Seattle/Tacoma Intl
Thu 6/18
5:15 am-7:40 pm
2 stops13h 25m
San José Juan Santamaria Intl
Mon 6/22
8:45 am-9:50 pm
2 stops14h 05m
$721
SeattleSan José
SEA - SJO
SEASJO
Seattle/Tacoma Intl
Mon 7/20
9:18 pm-11:15 pm
2 stops24h 57m
San José Juan Santamaria Intl
Tue 7/28
7:45 am-10:00 pm
1 stop15h 15m
$723
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
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.
What is the cheapest month to book a flight from Seattle to Costa Rica?
Currently, August is the cheapest month in which you can book a flight from Seattle to Costa Rica (average of $152). Flying from Seattle to Costa Rica in July is currently the most expensive (average of $463). 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.
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 May 4, 2026.
Get a feel of what it's like to fly with Alaska Airlines,Southwest, andDelta 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.
Entertainment
7.0
Crew
8.5
Food
7.1
Boarding
8.1
Overall
7.9
Comfort
7.8
Reviews
1 / 20
4.0
OkayAnonymous,Dec 2025
SEA - MSY
Entertainment
7.0
Crew
8.5
Food
7.1
Boarding
8.1
Overall
7.9
Comfort
7.8
Reviews
1 / 20
4.0
OkayAnonymous,Dec 2025
SEA - MSY
Entertainment
7.0
Crew
8.5
Food
7.1
Boarding
8.1
Overall
7.9
Comfort
7.8
Reviews
1 / 20
4.0
OkayAnonymous,Dec 2025
SEA - MSY
Entertainment
7.0
Crew
8.5
Food
7.1
Boarding
8.1
Overall
7.9
Comfort
7.8
Reviews
1 / 20
4.0
OkayAnonymous,Dec 2025
SEA - MSY
Entertainment
7.0
Crew
8.5
Food
7.1
Boarding
8.1
Overall
7.9
Comfort
7.8
Reviews
1 / 20
4.0
OkayAnonymous,Dec 2025
SEA - MSY
Entertainment
7.0
Crew
8.5
Food
7.1
Boarding
8.1
Overall
7.9
Comfort
7.8
Reviews
1 / 20
4.0
OkayAnonymous,Dec 2025
SEA - MSY
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 May 4, 2026.
Popular flight searches
Check out other popular destinations found by fellow travelers in 2026
Top 8 airlines flying from Seattle to Costa Rica
Discover the top 8 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 2,558,603 searches. Data last updated May 4, 2026.
| Airline | Cheapest | Average | Flexibility | On-time |
|---|---|---|---|---|
| Cheapest$152 | Average$221 | FlexibilityNo cancel fee | On-time71% | |
| Cheapest$316 | Average$617 | FlexibilityNo cancel fee | On-time71% | |
| Cheapest$345 | Average$677 | FlexibilityNo cancel fee | On-timeN/A | |
| Cheapest$357 | Average$608 | FlexibilityNo cancel fee | On-time75% | |
| Cheapest$362 | Average$681 | FlexibilityNo cancel fee | On-time62% | |
| Cheapest$366 | Average$609 | FlexibilityNo cancel fee | On-time69% | |
| Cheapest$516 | Average$666 | FlexibilityNo cancel fee | On-time63% | |
| Cheapest$766 | Average$971 | FlexibilityNo cancel fee | On-timeN/A |