$248+ Cheap flights from Costa Rica to Seattle (SEA)
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 10/12. Fares are subject to change and may not be available on all flights or dates of travel.
SJO — SEA
Sep 12 — Sep 191
Round-trip
1 adult, Economy
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1. Tell us where you want to go
Enter your travel information like dates, passengers, trip type (one-way or round trip), and preferred cabin class then click “Find deals”2. Select your favorite providers
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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 Costa Rica to Seattle
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Cheapest flights from Costa Rica to SeattleExplore the most affordable flight options available from Costa Rica to Seattle. Find the lowest fares from popular airlines and budget airlines, with prices last updated on August 13, 2026.
Explore the most affordable flight options available from Costa Rica to Seattle. Find the lowest fares from popular airlines and budget airlines, with prices last updated on August 13, 2026.
This Avianca deal was found by Cheapflights users on 8/12. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Avianca is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 10/37:45 am -
1 stop15h 14m
Sat 10/108:20 am -
2 stops13h 55m
Deal found 8/12![Multiple Airlines logo]()
$553
This eDestinos deal was found by Cheapflights users on 8/12. 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 9/195:45 am -
1 stop16h 54m
Sun 9/279:27 am -
1 stop22h 03m
Deal found 8/12![Multiple Airlines logo]()
$555
This United Airlines deal was found by Cheapflights users on 8/11. 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.
Sat 9/198:45 am -
1 stop10h 44m
Sun 9/279:05 am -
1 stop21h 10m
Deal found 8/11![United Airlines logo]()
$556
This FlightHub deal was found by Cheapflights users on 8/11. 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 FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 10/255:45 am -
2 stops18h 12m
Tue 11/38:03 am -
2 stops13h 12m
Deal found 8/11![Multiple Airlines logo]()
$559
This SmartFares deal was found by Cheapflights users on 8/8. 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 SmartFares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 9/153:10 pm -
2 stops18h 42m
Wed 9/306:49 am -
2 stops15h 51m
Deal found 8/8![Multiple Airlines logo]()
$561
This Avianca deal was found by Cheapflights users on 8/9. 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 Avianca is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 10/317:45 am -
1 stop15h 14m
Tue 11/36:00 am -
2 stops15h 15m
Deal found 8/9![Multiple Airlines logo]()
$562
This American Airlines deal was found by Cheapflights users on 8/10. 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.
Sun 9/201:00 pm -
1 stop12h 07m
Wed 9/306:15 am -
2 stops12h 52m
Deal found 8/10![American Airlines logo]()
$564
This United Airlines deal was found by Cheapflights users on 8/10. 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.
Sat 9/198:45 am -
1 stop10h 44m
Mon 9/285:05 pm -
1 stop18h 16m
Deal found 8/10![United Airlines logo]()
$565
This eDestinos deal was found by Cheapflights users on 8/11. 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 eDestinos is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 12/225:45 am -
1 stop16h 40m
Thu 12/318:07 am -
1 stop13h 08m
Deal found 8/11![Multiple Airlines logo]()
$566
This FlightHub deal was found by Cheapflights users on 8/9. 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 FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 8/245:05 am -
2 stops15h 34m
Sat 9/56:49 am -
2 stops15h 26m
Deal found 8/9![Multiple Airlines logo]()
$567
This FlightHub deal was found by Cheapflights users on 8/13. 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 9/85:45 am -
2 stops13h 48m
Tue 9/155:59 pm -
3 stops16h 46m
Deal found 8/13![Multiple Airlines logo]()
$568
This United Airlines deal was found by Cheapflights users on 8/11. 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.
Sun 10/251:25 pm -
1 stop10h 37m
Sat 10/3111:59 pm -
1 stop10h 26m
Deal found 8/11![United Airlines logo]()
$569
Best flights from Costa Rica to SeattleDiscover carefully curated flight deals from Costa Rica to Seattle that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated August 13, 2026.
Discover carefully curated flight deals from Costa Rica to Seattle that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated August 13, 2026.
This United Airlines deal was found by Cheapflights users on 8/8. 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 9/21:25 pm -
2 stops21h 34m
Sun 9/137:35 pm -
2 stops23h 02m
Deal found 8/8![United Airlines logo]()
$556
This Air Canada deal was found by Cheapflights users on 8/11. 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.
Tue 11/243:10 pm -
1 stop31h 49m
Mon 11/307:45 am -
1 stop28h 25m
Deal found 8/11![Air Canada logo]()
$636
This Delta deal was found by Cheapflights users on 8/10. 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.
Wed 10/211:00 pm -
1 stop11h 52m
Mon 10/2611:59 pm -
1 stop10h 46m
Deal found 8/10![Delta logo]()
$641
This American Airlines deal was found by Cheapflights users on 8/9. 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 10/212:44 pm -
2 stops22h 34m
Mon 10/2610:48 pm -
2 stops13h 30m
Deal found 8/9![American Airlines logo]()
$654
This Alaska Airlines deal was found by Cheapflights users on 8/12. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 12/311:22 am -
1 stop13h 24m
Mon 12/72:00 pm -
2 stops14h 22m
Deal found 8/12![Alaska Airlines logo]()
$654
This United Airlines deal was found by Cheapflights users on 8/8. 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 9/191:25 pm -
2 stops22h 59m
Mon 9/286:43 pm -
2 stops16h 38m
Deal found 8/8![United Airlines logo]()
$556
This United Airlines deal was found by Cheapflights users on 8/11. 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.
Tue 10/278:40 am -
1 stop15h 51m
Thu 11/511:59 pm -
1 stop9h 26m
Deal found 8/11![United Airlines logo]()
$556
This Air Canada deal was found by Cheapflights users on 8/12. 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 11/213:10 pm -
2 stops25h 27m
Sat 1/163:15 pm -
2 stops20h 55m
Deal found 8/12![Air Canada logo]()
$663
This United Airlines deal was found by Cheapflights users on 8/8. 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 9/191:25 pm -
2 stops21h 24m
Sun 9/276:43 pm -
2 stops40h 38m
Deal found 8/8![United Airlines logo]()
$556
This United Airlines deal was found by Cheapflights users on 8/11. 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.
Sat 12/198:45 am -
2 stops17h 48m
Mon 12/285:00 am -
1 stop15h 00m
Deal found 8/11![United Airlines logo]()
$570
This United Airlines deal was found by Cheapflights users on 8/12. 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 11/259:40 am -
1 stop17h 19m
Wed 12/211:59 pm -
1 stop18h 40m
Deal found 8/12![United Airlines logo]()
$577
This United Airlines deal was found by Cheapflights users on 8/10. 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.
Mon 2/11:15 am -
1 stop13h 30m
Wed 2/31:16 pm -
1 stop17h 16m
Deal found 8/10![United Airlines logo]()
$578
This deal was found by Cheapflights users on 8/8. 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 is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 10/221:20 pm -
1 stop10h 40m
Mon 10/265:05 am -
1 stop9h 05m
Deal found 8/8![United Airlines logo]()
$649
This United Airlines deal was found by Cheapflights users on 8/12. 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 10/11:20 pm -
1 stop26h 33m
Mon 10/511:59 pm -
1 stop11h 11m
Deal found 8/12![United Airlines logo]()
$662
This United Airlines deal was found by Cheapflights users on 8/12. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 10/221:20 pm -
2 stops25h 01m
Sun 10/2512:28 pm -
3 stops22h 42m
Deal found 8/12![United Airlines logo]()
$662
Last-minute flights from Costa Rica to SeattleDiscover last-minute flight deals from Costa Rica to Seattle. Data last updated August 13, 2026 and is based on user searches.
Discover last-minute flight deals from Costa Rica to Seattle. Data last updated August 13, 2026 and is based on user searches.
This FlightHub deal was found by Cheapflights users on 8/9. 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 FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 8/245:05 am -
2 stops15h 34m
Sat 9/56:49 am -
2 stops15h 26m
Deal found 8/9![Multiple Airlines logo]()
$567
This FlightHub deal was found by Cheapflights users on 8/8. 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 FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 8/255:45 am -
2 stops14h 54m
Sat 9/56:49 am -
2 stops15h 26m
Deal found 8/8![Multiple Airlines logo]()
$559
This FlightHub deal was found by Cheapflights users on 8/13. 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 9/85:45 am -
2 stops13h 48m
Tue 9/155:59 pm -
3 stops16h 46m
Deal found 8/13![Multiple Airlines logo]()
$568
This SmartFares deal was found by Cheapflights users on 8/8. 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 SmartFares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 9/153:10 pm -
2 stops18h 42m
Wed 9/306:49 am -
2 stops15h 51m
Deal found 8/8![Multiple Airlines logo]()
$561
This eDestinos deal was found by Cheapflights users on 8/12. 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 9/195:45 am -
1 stop16h 54m
Sun 9/279:27 am -
1 stop22h 03m
Deal found 8/12![Multiple Airlines logo]()
$555
This United Airlines deal was found by Cheapflights users on 8/11. 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.
Sat 9/198:45 am -
1 stop10h 44m
Sun 9/279:05 am -
1 stop21h 10m
Deal found 8/11![United Airlines logo]()
$556
This United Airlines deal was found by Cheapflights users on 8/10. 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.
Sat 9/198:45 am -
1 stop10h 44m
Mon 9/285:05 pm -
1 stop18h 16m
Deal found 8/10![United Airlines logo]()
$565
This American Airlines deal was found by Cheapflights users on 8/10. 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.
Sun 9/201:00 pm -
1 stop12h 07m
Wed 9/306:15 am -
2 stops12h 52m
Deal found 8/10![American Airlines logo]()
$564
This American Airlines deal was found by Cheapflights users on 8/11. 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.
Sun 9/201:00 pm -
1 stop12h 07m
Sat 9/265:34 pm -
1 stop19h 23m
Deal found 8/11![American Airlines logo]()
$566
This United Airlines deal was found by Cheapflights users on 8/10. 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 9/241:20 pm -
1 stop30h 43m
Thu 10/111:59 pm -
1 stop11h 11m
Deal found 8/10![United Airlines logo]()
$681
This Avianca deal was found by Cheapflights users on 8/10. 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 Avianca is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 9/297:45 am -
1 stop15h 09m
Tue 10/610:07 am -
2 stops12h 08m
Deal found 8/10![Multiple Airlines logo]()
$562
One-way flights from Costa Rica to SeattleSearch for one-way flight options from Costa Rica to Seattle. Find affordable one-way fares based on user searches. Data last updated August 13, 2026.
Search for one-way flight options from Costa Rica to Seattle. Find affordable one-way fares based on user searches. Data last updated August 13, 2026.
This Kiwi.com deal was found by Cheapflights users on 8/8. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 10/121:15 pm -
2 stops45h 45m
Deal found 8/8![Multiple Airlines logo]()
$248
This Air Canada deal was found by Cheapflights users on 8/12. 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 11/93:10 pm -
1 stop31h 49m
Deal found 8/12![Air Canada logo]()
$258
This American Airlines deal was found by Cheapflights users on 8/13. 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 10/301:00 pm -
1 stop12h 10m
Deal found 8/13![American Airlines logo]()
$275
This Priceline deal was found by Cheapflights users on 8/12. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Priceline is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 11/101:46 am -
1 stop18h 09m
Deal found 8/12![Alaska Airlines logo]()
$279
This eDestinos deal was found by Cheapflights users on 8/10. 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 eDestinos is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 9/85:45 am -
1 stop31h 10m
Deal found 8/10![Multiple Airlines logo]()
$288
This Expedia deal was found by Cheapflights users on 8/8. 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 Expedia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 11/181:43 am -
1 stop19h 45m
Deal found 8/8![Alaska Airlines logo]()
$292
This Southwest deal was found by Cheapflights users on 8/9. 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.
Fri 10/239:00 am -
2 stops16h 35m
Deal found 8/9![Southwest logo]()
$297
This eDestinos deal was found by Cheapflights users on 8/10. 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 eDestinos is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 8/297:45 pm -
2 stops18h 54m
Deal found 8/10![Multiple Airlines logo]()
$300
This Avianca deal was found by Cheapflights users on 8/11. 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.
Thu 9/175:45 am -
2 stops15h 54m
Deal found 8/11![Multiple Airlines logo]()
$301
This American Airlines deal was found by Cheapflights users on 8/13. 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 10/206:00 am -
1 stop18h 59m
Deal found 8/13![American Airlines logo]()
$302
This Expedia deal was found by Cheapflights users on 8/12. 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 11/303:10 pm -
2 stops25h 27m
Deal found 8/12![Air Canada logo]()
$340
This Delta deal was found by Cheapflights users on 8/11. 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.
Wed 9/161:25 pm -
1 stop11h 33m
Deal found 8/11![Delta logo]()
$360
Find flight deals from Costa Rica to Seattle
Keep the following information in mind while searching for Costa Rica to Seattle flight deals. Data was last updated August 13, 2026.
Most accurate provider | FlightHub 3 stars |
|---|---|
Most trusted provider | FlightHub 3 stars |
Round-trip from | $553 (Avianca) |
One-way from | $248 (Kiwi.com) |
Popular in | June |
Cheapest in | October |
Average price | $663 |
Cheapflights Fare Finder
Customize your flight search to find flights from Costa Rica to Seattle 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 August 13, 2026.
Use the filters below to find and compare flights from Costa Rica to Seattle that are best for you.
Fly from
Fly to
Route
Depart
Return
Cheapest round-trip
San JoséSeattle
SJO San José Juan Santamaria Intl - SEA Seattle/Tacoma Intl
SJOSEA
San José Juan Santamaria Intl
Wed 9/2
1:25 pm-9:59 am
2 stops21h 34m
Seattle/Tacoma Intl
Sun 9/13
7:35 pm-7:37 pm
2 stops23h 02m
$556
San JoséSeattle
SJO San José Juan Santamaria Intl - SEA Seattle/Tacoma Intl
SJOSEA
San José Juan Santamaria Intl
Sat 9/19
1:25 pm-11:24 am
2 stops22h 59m
Seattle/Tacoma Intl
Mon 9/28
6:43 pm-12:21 pm
2 stops16h 38m
$556
San JoséSeattle
SJO San José Juan Santamaria Intl - SEA Seattle/Tacoma Intl
SJOSEA
San José Juan Santamaria Intl
Tue 10/27
8:40 am-11:31 pm
1 stop15h 51m
Seattle/Tacoma Intl
Thu 11/5
11:59 pm-11:25 am
1 stop9h 26m
$556
San JoséSeattle
SJO San José Juan Santamaria Intl - SEA Seattle/Tacoma Intl
SJOSEA
San José Juan Santamaria Intl
Sat 9/19
1:25 pm-9:49 am
2 stops21h 24m
Seattle/Tacoma Intl
Sun 9/27
6:43 pm-12:21 pm
2 stops40h 38m
$556
San JoséSeattle
SJO San José Juan Santamaria Intl - SEA Seattle/Tacoma Intl
SJOSEA
San José Juan Santamaria Intl
Sat 12/19
8:45 am-12:33 am
2 stops17h 48m
Seattle/Tacoma Intl
Mon 12/28
5:00 am-10:00 pm
1 stop15h 00m
$570
San JoséSeattle
SJO San José Juan Santamaria Intl - SEA Seattle/Tacoma Intl
SJOSEA
San José Juan Santamaria Intl
Wed 11/25
9:40 am-12:59 am
1 stop17h 19m
Seattle/Tacoma Intl
Wed 12/2
11:59 pm-8:39 pm
1 stop18h 40m
$577
San JoséSeattle
SJO San José Juan Santamaria Intl - SEA Seattle/Tacoma Intl
SJOSEA
San José Juan Santamaria Intl
Mon 2/1
1:15 am-12:45 pm
1 stop13h 30m
Seattle/Tacoma Intl
Wed 2/3
1:16 pm-8:32 am
1 stop17h 16m
$578
LiberiaSeattle
LIR Liberia - SEA Seattle/Tacoma Intl
LIRSEA
Liberia
Tue 11/24
3:10 pm-8:59 pm
1 stop31h 49m
Seattle/Tacoma Intl
Mon 11/30
7:45 am-2:10 pm
1 stop28h 25m
$636
LiberiaSeattle
LIR Liberia - SEA Seattle/Tacoma Intl
LIRSEA
Liberia
Wed 10/21
1:00 pm-11:52 pm
1 stop11h 52m
Seattle/Tacoma Intl
Mon 10/26
11:59 pm-11:45 am
1 stop10h 46m
$641
Quickest round-trip
LiberiaSeattle
LIR Liberia - SEA Seattle/Tacoma Intl
LIRSEA
Liberia
Thu 10/22
1:20 pm-11:00 pm
1 stop10h 40m
Seattle/Tacoma Intl
Mon 10/26
5:05 am-3:10 pm
1 stop9h 05m
$649
Showing 1-10 of 26 resultsSorted by cheapest first
Best time to book a flight from Costa Rica to Seattle
Have a flexible travel schedule? Discover the best time to fly to Seattle from Costa Rica with our price prediction graph.
SJO-SEA
LIR-SEA
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 Costa Rica to Seattle
CR0-SEA
SJO-SEA
LIR-SEA
What is the cheapest month to book a flight from Costa Rica to Seattle?
Currently, October is the cheapest month in which you can book a flight from Costa Rica to Seattle (average of $494). Flying from Costa Rica to Seattle in June is currently the most expensive (average of $701). 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 Costa Rica to Seattle?
To ensure you get the cheapest price possible for a flight from Costa Rica to Seattle, you should look to book at least 71 days in advance of your intended travel date. The price of your flight may increase if you delay and leave booking until a week or so before departure.
Reviews of airlines servicing Seattle
Get insights into the airlines that provide service to Seattle. 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 Seattle. Reviews last updated August 13, 2026.
Read reviews from past customers who have flown Alaska Airlines,United Airlines, andAmerican Airlines from Costa Rica to Seattle. Users can see the overall rating for each airline as well as how each is rated in terms of entertainment options, comfort, food, crew/service, and boarding process.
Entertainment
7.0
Food
7.0
Boarding
8.1
Overall
7.9
Comfort
7.8
Crew
8.5
Reviews
1 / 20
10.0
ExcellentAnonymous,Jun 2026
LHR - SEA
Entertainment
7.0
Food
7.0
Boarding
8.1
Overall
7.9
Comfort
7.8
Crew
8.5
Reviews
1 / 20
10.0
ExcellentAnonymous,Jun 2026
LHR - SEA
Entertainment
7.0
Food
7.0
Boarding
8.1
Overall
7.9
Comfort
7.8
Crew
8.5
Reviews
1 / 20
10.0
ExcellentAnonymous,Jun 2026
LHR - SEA
Entertainment
7.0
Food
7.0
Boarding
8.1
Overall
7.9
Comfort
7.8
Crew
8.5
Reviews
1 / 20
10.0
ExcellentAnonymous,Jun 2026
LHR - SEA
Related info for your journey
Find useful and relevant information for your journey from Costa Rica to Seattle. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.
Traveling to a place near Seattle?
Book flights to Seattle if you plan to visit one of these locationsSeaTac
Renton
Tacoma
Lacey
Leavenworth
Olympia
Tukwila
Edmonds
Snoqualmie
Lynnwood
Tumwater
Centralia
Puyallup
Marysville
Kent
Ellensburg
Fife
Ocean Shores
Lakewood
Poulsbo
Browse thousands of different options on Cheapflights for your next trip
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Alternative routes for Costa Rica to Seattle
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Complete your trip
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Search flights from Costa Rica to Seattle by cabin class
Find flights from Costa Rica to Seattle, based on your preferred cabin class, be it economy, premium economy, business, or first class.
Costa Rica and Seattle flights
Browse other Costa Rica and Seattle flight options. Last updated on August 13, 2026.
Popular flight searches
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Other flights to Seattle
Explore flights to Seattle departing from other origins. Flights are based on user searches made on Cheapflights and were last updated on August 13, 2026.
Top 3 airlines flying from Costa Rica to Seattle
Discover the top 3 airlines that operate flights from Costa Rica to Seattle. 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 August 13, 2026.
| Airline | Cheapest | Average | Flexibility | On-time |
|---|---|---|---|---|
| Cheapest$368 | Average$639 | FlexibilityNo cancel fee | On-time71% | |
| Cheapest$452 | Average$637 | FlexibilityNo cancel fee | On-time69% | |
| Cheapest$464 | Average$692 | FlexibilityNo cancel fee | On-time75% |