$342+ Cheap flights from Seattle (SEA) to Seoul (SEL)
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 11/3. Fares are subject to change and may not be available on all flights or dates of travel.
SEA — SEL
Oct 22 — Oct 291
Round-trip
1 adult, Economy
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Find cheap flights from Seattle to Seoul 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.Cheapflights Tip: The best prices from Seattle/Tacoma Intl to Seoul are usually found in January or February, booked 45 days in advance, depart on a Wednesday or Monday and return on a Monday
Cheap flight deals from Seattle to Seoul
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Cheapest flights from Seattle to SeoulExplore the most affordable flight options available from Seattle to Seoul. Find the lowest fares from popular airlines and budget airlines, with prices last updated on September 22, 2026.
Explore the most affordable flight options available from Seattle to Seoul. Find the lowest fares from popular airlines and budget airlines, with prices last updated on September 22, 2026.
This oojo deal was found by Cheapflights users on 9/17. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure oojo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 9/217:24 pm -
2 stops25h 16m
Wed 9/301:40 pm -
1 stop36h 25m
Deal found 9/17![Multiple Airlines logo]()
$903
This oojo deal was found by Cheapflights users on 9/18. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure oojo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 10/1211:45 am -
1 stop39h 20m
Wed 11/41:50 pm -
2 stops25h 53m
Deal found 9/18![Multiple Airlines logo]()
$907
This KAYAK deal was found by Cheapflights users on 9/18. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure KAYAK is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 10/14:59 pm -
2 stops29h 06m
Sun 10/251:55 am -
1 stop23h 50m
Deal found 9/18![Multiple Airlines logo]()
$908
This Cathay Pacific deal was found by Cheapflights users on 9/18. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Cathay Pacific is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 9/2311:45 am -
1 stop32h 55m
Fri 11/610:00 am -
1 stop39h 45m
Deal found 9/18![Cathay Pacific logo]()
$911
This Kiwi.com deal was found by Cheapflights users on 9/17. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 10/111:45 am -
1 stop20h 40m
Sun 10/183:10 pm -
1 stop34h 55m
Deal found 9/17![Cathay Pacific logo]()
$912
This BusinessClass deal was found by Cheapflights users on 9/19. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure BusinessClass is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 11/17:58 pm -
2 stops48h 52m
Mon 11/161:50 pm -
1 stop35h 55m
Deal found 9/19![Multiple Airlines logo]()
$913
This FlightHub deal was found by Cheapflights users on 9/19. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 11/1010:03 am -
2 stops21h 37m
Tue 12/17:35 pm -
1 stop30h 10m
Deal found 9/19![Cathay Pacific logo]()
$914
This oojo deal was found by Cheapflights users on 9/17. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure oojo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 11/1110:25 am -
1 stop21h 15m
Tue 11/171:55 am -
1 stop23h 50m
Deal found 9/17![Cathay Pacific logo]()
$916
This Kiwi.com deal was found by Cheapflights users on 9/17. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 11/17:18 am -
1 stop21h 02m
Sun 11/87:45 pm -
2 stops36h 27m
Deal found 9/17![Multiple Airlines logo]()
$917
This oojo deal was found by Cheapflights users on 9/18. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure oojo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 10/111:45 am -
1 stop18h 40m
Wed 10/281:55 am -
1 stop23h 50m
Deal found 9/18![Cathay Pacific logo]()
$918
This Kiwi.com deal was found by Cheapflights users on 9/17. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 9/2811:45 am -
1 stop18h 40m
Mon 10/196:40 am -
1 stop19h 25m
Deal found 9/17![Cathay Pacific logo]()
$919
This FlightHub deal was found by Cheapflights users on 9/17. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 9/275:59 pm -
2 stops26h 41m
Wed 10/211:55 am -
1 stop24h 10m
Deal found 9/17![Cathay Pacific logo]()
$920
Best flights from Seattle to SeoulDiscover carefully curated flight deals from Seattle to Seoul that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated September 22, 2026.
Discover carefully curated flight deals from Seattle to Seoul that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated September 22, 2026.
This EVA Air deal was found by Cheapflights users on 9/21. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure EVA Air is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 3/141:10 am -
1 stop24h 50m
Sat 3/271:50 pm -
1 stop21h 30m
Deal found 9/21![EVA Air logo]()
$1,113
This Cathay Pacific deal was found by Cheapflights users on 9/19. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Cathay Pacific is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 11/209:37 pm -
2 stops46h 08m
Fri 11/271:55 am -
2 stops29h 47m
Deal found 9/19![Cathay Pacific logo]()
$1,176
This Qatar Airways deal was found by Cheapflights users on 9/19. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Qatar Airways is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 11/48:47 am -
2 stops32h 43m
Sun 11/2212:20 am -
2 stops39h 29m
Deal found 9/19![Qatar Airways logo]()
$1,177
This Delta deal was found by Cheapflights users on 9/18. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 1/1812:40 pm -
Nonstop12h 05m
Fri 2/56:45 pm -
Nonstop10h 05m
Deal found 9/18![Delta logo]()
$1,193
This Japan Airlines deal was found by Cheapflights users on 9/22. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Japan Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 10/161:55 pm -
2 stops39h 20m
Fri 10/237:15 pm -
2 stops36h 49m
Deal found 9/22![Japan Airlines logo]()
$1,556
This Globehunters deal was found by Cheapflights users on 9/22. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Globehunters is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 10/24:30 pm -
1 stop26h 35m
Sun 10/117:40 am -
1 stop22h 45m
Deal found 9/22![ANA logo]()
$1,965
This EVA Air deal was found by Cheapflights users on 9/21. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure EVA Air is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 3/151:10 am -
1 stop26h 05m
Sat 3/271:50 pm -
1 stop20h 50m
Deal found 9/21![EVA Air logo]()
$1,113
This Delta deal was found by Cheapflights users on 9/21. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 11/511:00 am -
Nonstop11h 55m
Tue 11/104:10 pm -
Nonstop9h 55m
Deal found 9/21![Delta logo]()
$1,193
This EVA Air deal was found by Cheapflights users on 9/21. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure EVA Air is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 3/171:10 am -
1 stop19h 40m
Sat 3/271:50 pm -
1 stop20h 50m
Deal found 9/21![EVA Air logo]()
$1,113
This Delta deal was found by Cheapflights users on 9/21. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 10/121:00 pm -
Nonstop11h 50m
Sat 10/177:00 pm -
Nonstop10h 14m
Deal found 9/21![Delta logo]()
$1,193
This Delta deal was found by Cheapflights users on 9/17. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 11/512:30 pm -
Nonstop12h 15m
Thu 11/126:45 pm -
Nonstop10h 06m
Deal found 9/17![Delta logo]()
$1,193
This Delta deal was found by Cheapflights users on 9/17. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 11/1011:00 am -
Nonstop11h 55m
Mon 11/164:10 pm -
Nonstop9h 55m
Deal found 9/17![Delta logo]()
$1,193
This Japan Airlines deal was found by Cheapflights users on 9/21. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Japan Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 10/206:39 am -
2 stops22h 36m
Thu 10/2212:05 pm -
2 stops19h 59m
Deal found 9/21![Japan Airlines logo]()
$1,592
This Delta deal was found by Cheapflights users on 9/21. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 10/2112:50 pm -
Nonstop11h 50m
Thu 10/294:10 pm -
Nonstop9h 55m
Deal found 9/21![Delta logo]()
$1,193
This Japan Airlines deal was found by Cheapflights users on 9/17. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Japan Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 10/31:55 pm -
2 stops52h 45m
Sun 10/187:15 pm -
2 stops36h 49m
Deal found 9/17![Japan Airlines logo]()
$1,662
This Delta deal was found by Cheapflights users on 9/21. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 10/207:16 am -
1 stop18h 04m
Tue 10/274:10 pm -
Nonstop9h 55m
Deal found 9/21![Delta logo]()
$1,198
This Japan Airlines deal was found by Cheapflights users on 9/17. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Japan Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 10/31:55 pm -
2 stops52h 45m
Sat 10/178:00 am -
2 stops24h 04m
Deal found 9/17![Japan Airlines logo]()
$1,717
This Delta deal was found by Cheapflights users on 9/21. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 11/612:30 pm -
Nonstop12h 15m
Sat 11/216:45 pm -
Nonstop10h 06m
Deal found 9/21![Delta logo]()
$1,215
This Delta deal was found by Cheapflights users on 9/17. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 10/1712:50 pm -
Nonstop11h 50m
Sat 10/244:40 pm -
Nonstop10h 00m
Deal found 9/17![Delta logo]()
$1,215
This Gotogate deal was found by Cheapflights users on 9/21. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Gotogate is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 11/58:15 am -
2 stops20h 50m
Tue 11/1012:05 pm -
2 stops22h 16m
Deal found 9/21![Japan Airlines logo]()
$1,803
This Delta deal was found by Cheapflights users on 9/19. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 10/117:16 am -
1 stop18h 04m
Wed 10/214:40 pm -
Nonstop10h 00m
Deal found 9/19![Delta logo]()
$1,220
This Japan Airlines deal was found by Cheapflights users on 9/17. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Japan Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 12/2510:03 am -
2 stops19h 02m
Thu 1/712:05 pm -
2 stops36h 03m
Deal found 9/17![Japan Airlines logo]()
$1,918
Last-minute flights from Seattle to SeoulDiscover last-minute flight deals from Seattle to Seoul. Data last updated September 22, 2026 and is based on user searches.
Discover last-minute flight deals from Seattle to Seoul. Data last updated September 22, 2026 and is based on user searches.
This oojo deal was found by Cheapflights users on 9/17. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure oojo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 9/217:24 pm -
2 stops25h 16m
Wed 9/301:40 pm -
1 stop36h 25m
Deal found 9/17![Multiple Airlines logo]()
$903
This Kiwi.com deal was found by Cheapflights users on 9/17. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 9/2111:45 am -
1 stop18h 40m
Sun 10/41:55 am -
2 stops30h 31m
Deal found 9/17![Cathay Pacific logo]()
$913
This Cathay Pacific deal was found by Cheapflights users on 9/18. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Cathay Pacific is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 9/2311:45 am -
1 stop32h 55m
Fri 11/610:00 am -
1 stop39h 45m
Deal found 9/18![Cathay Pacific logo]()
$911
This FlightHub deal was found by Cheapflights users on 9/17. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 9/275:59 pm -
2 stops26h 41m
Wed 10/211:55 am -
1 stop24h 10m
Deal found 9/17![Cathay Pacific logo]()
$920
This oojo deal was found by Cheapflights users on 9/17. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure oojo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 9/2811:45 am -
1 stop18h 40m
Sun 10/257:35 pm -
1 stop30h 10m
Deal found 9/17![Cathay Pacific logo]()
$916
This Kiwi.com deal was found by Cheapflights users on 9/17. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 9/2811:45 am -
1 stop18h 40m
Mon 10/196:40 am -
1 stop19h 25m
Deal found 9/17![Cathay Pacific logo]()
$919
This KAYAK deal was found by Cheapflights users on 9/18. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure KAYAK is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 10/14:59 pm -
2 stops29h 06m
Sun 10/251:55 am -
1 stop23h 50m
Deal found 9/18![Multiple Airlines logo]()
$908
This Kiwi.com deal was found by Cheapflights users on 9/17. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 10/111:45 am -
1 stop20h 40m
Sun 10/183:10 pm -
1 stop34h 55m
Deal found 9/17![Cathay Pacific logo]()
$912
This oojo deal was found by Cheapflights users on 9/18. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure oojo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 10/111:45 am -
1 stop18h 40m
Wed 10/281:55 am -
1 stop23h 50m
Deal found 9/18![Cathay Pacific logo]()
$918
This KAYAK deal was found by Cheapflights users on 9/17. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure KAYAK is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 10/111:45 am -
1 stop32h 55m
Thu 10/226:40 am -
1 stop19h 25m
Deal found 9/17![Cathay Pacific logo]()
$921
This oojo deal was found by Cheapflights users on 9/18. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure oojo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 10/1211:45 am -
1 stop39h 20m
Wed 11/41:50 pm -
2 stops25h 53m
Deal found 9/18![Multiple Airlines logo]()
$907
This FlightHub deal was found by Cheapflights users on 9/19. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 10/2811:25 am -
1 stop34h 25m
Tue 11/103:00 pm -
2 stops33h 07m
Deal found 9/19![Cathay Pacific logo]()
$914
One-way flights from Seattle to SeoulSearch for one-way flight options from Seattle to Seoul. Find affordable one-way fares based on user searches. Data last updated September 22, 2026.
Search for one-way flight options from Seattle to Seoul. Find affordable one-way fares based on user searches. Data last updated September 22, 2026.
This Kiwi.com deal was found by Cheapflights users on 9/18. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 11/38:09 pm -
1 stop40h 01m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/18![Multiple Airlines logo]()
$342
This Kiwi.com deal was found by Cheapflights users on 9/21. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 11/48:54 am -
1 stop19h 26m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/21![Multiple Airlines logo]()
$372
This Kiwi.com deal was found by Cheapflights users on 9/18. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 11/144:27 pm -
2 stops35h 53m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/18![Multiple Airlines logo]()
$376
This Kiwi.com deal was found by Cheapflights users on 9/18. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 11/77:33 pm -
1 stop32h 47m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/18![Multiple Airlines logo]()
$377
This Kiwi.com deal was found by Cheapflights users on 9/20. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 10/314:27 pm -
2 stops36h 53m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/20![Multiple Airlines logo]()
$378
This Kiwi.com deal was found by Cheapflights users on 9/17. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 10/237:35 pm -
1 stop31h 10m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/17![WestJet logo]()
$387
This Kiwi.com deal was found by Cheapflights users on 9/17. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 10/207:35 pm -
1 stop31h 10m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/17![WestJet logo]()
$399
This Kiwi.com deal was found by Cheapflights users on 9/17. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 11/159:39 pm -
2 stops46h 26m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/17![Multiple Airlines logo]()
$519
This Kiwi.com deal was found by Cheapflights users on 9/18. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 9/281:15 am -
2 stops39h 50m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/18![Multiple Airlines logo]()
$532
This Kiwi.com deal was found by Cheapflights users on 9/20. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 9/261:15 am -
2 stops41h 20m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/20![Multiple Airlines logo]()
$537
This Kiwi.com deal was found by Cheapflights users on 9/21. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 9/284:30 pm -
2 stops32h 55m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/21![Multiple Airlines logo]()
$547
This Kiwi.com deal was found by Cheapflights users on 9/18. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 9/291:15 am -
2 stops38h 25m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/18![Multiple Airlines logo]()
$557
Find flight deals from Seattle to Seoul
Discover tips and strategies to find the most affordable flight options for your journey from Seattle (SEA) to Seoul (SEL). Learn about various techniques such as flexible date searches, comparing prices across and setting up price alerts. Use these methods to find the cheapest flights available for your travel needs. Data last updated September 22, 2026.
Most accurate provider | FlightHub 3 stars |
|---|---|
Most trusted provider | FlightHub 3 stars |
Round-trip from | $896 (Super.com) |
One-way from | $342 (Kiwi.com) |
Popular in | December |
Cheapest in | January |
Average price | $968 |
Good round-trip deal | $798 or less |
Good one-way deal | $428 or less |
Cheapflights Fare Finder
Customize your flight search to find flights from Seattle to Seoul that fit within your specific budget. Explore options based on user searches and filter the results based on your desired price range. Find flights that match your budget for a cost-effective journey. Over the last 7 days, Cheapflights users made 7,457,451 searches. Data last updated September 22, 2026.
Use the filters below to find and compare flights from Seattle to Seoul that are best for you.
Fly from
Fly to
Route
Depart
Return
Cheapest round-trip
SeattleIncheon
SEA Seattle/Tacoma Intl - ICN Incheon Intl
SEAICN
Seattle/Tacoma Intl
Thu 3/18
1:10 am-11:20 am
1 stop18h 10m
Incheon Intl
Wed 12/31
12:00 am-7:00 am
Nonstop0h 00m
$516
SeattleIncheon
SEA Seattle/Tacoma Intl - ICN Incheon Intl
SEAICN
Seattle/Tacoma Intl
Tue 9/29
5:59 pm-12:25 am
2 stops38h 26m
Incheon Intl
Wed 12/31
12:00 am-7:00 am
Nonstop0h 00m
$535
SeattleSeoul
SEA Seattle/Tacoma Intl - GMP Seoul Gimpo Intl
SEAGMP
Seattle/Tacoma Intl
Tue 9/29
1:15 am-7:40 am
2 stops38h 25m
Seoul Gimpo Intl
Wed 12/31
12:00 am-7:00 am
Nonstop0h 00m
$557
SeattleSeoul
SEA Seattle/Tacoma Intl - GMP Seoul Gimpo Intl
SEAGMP
Seattle/Tacoma Intl
Fri 1/22
8:40 am-1:35 pm
3 stops59h 55m
Seoul Gimpo Intl
Wed 12/31
12:00 am-7:00 am
Nonstop0h 00m
$569
SeattleSeoul
SEA Seattle/Tacoma Intl - GMP Seoul Gimpo Intl
SEAGMP
Seattle/Tacoma Intl
Sat 11/7
10:20 am-9:20 am
3 stops54h 00m
Seoul Gimpo Intl
Wed 12/31
12:00 am-7:00 am
Nonstop0h 00m
$614
SeattleSeoul
SEA Seattle/Tacoma Intl - GMP Seoul Gimpo Intl
SEAGMP
Seattle/Tacoma Intl
Sun 10/18
1:30 am-6:10 pm
1 stop24h 40m
Seoul Gimpo Intl
Wed 12/31
12:00 am-7:00 am
Nonstop0h 00m
$615
SeattleSeoul
SEA Seattle/Tacoma Intl - GMP Seoul Gimpo Intl
SEAGMP
Seattle/Tacoma Intl
Sun 9/27
1:30 am-6:10 pm
1 stop24h 40m
Seoul Gimpo Intl
Wed 12/31
12:00 am-7:00 am
Nonstop0h 00m
$616
Quickest round-trip
SeattleIncheon
SEA Seattle/Tacoma Intl - ICN Incheon Intl
SEAICN
Seattle/Tacoma Intl
Sun 10/11
1:00 pm-4:50 pm
Nonstop11h 50m
Incheon Intl
Wed 12/31
12:00 am-7:00 am
Nonstop0h 00m
$619
SeattleIncheon
SEA Seattle/Tacoma Intl - ICN Incheon Intl
SEAICN
Seattle/Tacoma Intl
Fri 10/30
1:40 pm-5:35 pm
Nonstop11h 55m
Incheon Intl
Wed 12/31
12:00 am-7:00 am
Nonstop0h 00m
$619
SeattleIncheon
SEA Seattle/Tacoma Intl - ICN Incheon Intl
SEAICN
Seattle/Tacoma Intl
Sun 10/18
12:50 pm-4:40 pm
Nonstop11h 50m
Incheon Intl
Wed 12/31
12:00 am-7:00 am
Nonstop0h 00m
$619
Showing 1-10 of 44 resultsSorted by cheapest first
Compare providers for flights from Seattle to Seoul
Provider information is updated monthly. Please note that these providers often have deals for this flight, but the availability may vary on a day-by-day basis on Cheapflights.
Use the table below to compare price accuracy, trust ratings, and cancellation policies for each provider offering flight deals from Seattle to Seoul in September.
| Provider | Price Accuracy | Trust Score* |
|---|---|---|
| Price Accuracy1 star | Trust Score*3 stars | |
| Price Accuracy3 stars | Trust Score*3 stars | |
| Price Accuracy3 stars | Trust Score*3 stars | |
| Price Accuracy- | Trust Score*1 star | |
| Price Accuracy3 stars | Trust Score*3 stars | |
| Price Accuracy3 stars | Trust Score*3 stars |
- Most accurate provider: When it comes to deals on Seattle-Seoul flights, users find the pricing of FlightHub to be most consistent on Cheapflights vs. FlightHub Users can find the same prices on Seattle-Seoul flight deals on Cheapflights vs. FlightHub >95% of the time. Price accuracy is based on data collected from Seattle-Seoul flight searches over the past month and is updated monthly.
- Most trusted provider: When it comes to deals on Seattle-Seoul flights, Cheapflights users trust FlightHub the most. FlightHub has received a user feedback score of 3 out of 3 stars (3 being the best), meaning they have been trusted the most by Cheapflights users looking for Seattle-Seoul flight deals. Provider user feedback score is based on Cheapflights searches over the past month and is updated monthly.
Best time to book a flight from Seattle to Seoul
Have a flexible travel schedule? Discover the best time to fly to Seoul from Seattle with our price prediction graph.
SEA-SEL
SEA-ICN
SEA-GMP
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 Seoul
SEA-SEL
SEA-ICN
SEA-GMP
What is the cheapest month to book a flight from Seattle to Seoul?
Currently, April is the cheapest month in which you can book a flight from Seattle to Seoul (average of $343). Flying from Seattle to Seoul in December is currently the most expensive (average of $1,387). 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.
What is the cheapest time of day to fly from SEA to SEL?
Find hourly flight availability from Seattle to Seoul. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated September 22, 2026.
It’s optimal to fly from Seattle to Seoul at noon. By choosing this option you can save up to 77% on the cost of your flight, compared to a flight in the afternoon.
Weekly flight availability from Seattle to Seoul
Explore weekly flight availability from Seattle to Seoul. Discover flights operating on different days of the week, giving you the flexibility to choose a travel day that best fits your plans. Compare info to find the most convenient option for your journey. Data last updated September 22, 2026.
The most flights from SEA to SEL are scheduled on a Monday (9 on average). You will have fewer flight options on Thursday, which is when the least amount of flights are scheduled (4 on average).
How much does it cost to fly round-trip from Seattle to Seoul?
Airfare is typical for this route at the moment.
Seattle to Seoul flights typically cost between $869 and $1,282 in March.The cheapest round-trip price found within the last 5 days was $905 on Multiple Airlines (Mar 1-Mar 16).
What’s the top layover airport for flights from Seattle to Seoul?
Share of 1-stop round-trip flights from Seattle to Seoul chosen by Cheapflights users in the past 12 months, using the same layover each way.
Hong Kong (HKG) – chosen by Cheapflights users on 78% of 1-stop itineraries from Seattle to Seoul on Cheapflights.
What’s the cheapest layover airport for flights from Seattle to Seoul?
Average round-trip fare for 1-stop flights from Seattle to Seoul, chosen by Cheapflights users in the past 12 months, with the same layover each way.
Hong Kong (HKG) is the most affordable 1-stop option, with an average round-trip price of $837.
What’s the fastest layover option from Seattle to Seoul?
Shortest average travel time for 1-stop one-way flights from Seattle to Seoul, based on itineraries clicked by Cheapflights users over the past 12 months, grouped by layover airport.
Flights via Calgary (YYC) have the shortest average one-way travel time for 1-stop routes: 16h 15m.
Which airport typically offers the quickest layover for flights from Seattle to Seoul?
Average layover duration for 1-stop one-way flights from Seattle to Seoul, chosen by Cheapflights users in the last 12 months, grouped by stopover airport.
Flights via Hong Kong (HKG) offer the fastest connection on this route, with an average layover time of 1h 52m.
How far ahead should I book a flight from Seattle to Seoul?
Booking 68 days in advance of your planned departure date is, on average, the best time to get cheap flights from Seattle to Seoul. The general trend is that the closer you book to the departure date, the more expensive your flight will be.
The best insider tips for Seattle to Seoul flights
AI-powered summary based on content written by travel experts. AI can make mistakes.
Cheapflights partnered with top experts to bring you the best recommendations for your Seattle to Seoul trip
Our travel experts
Reviews of airlines servicing Seoul
Get insights into the airlines that provide service to Seoul. 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 Seoul. Reviews last updated September 22, 2026.
Peruse reviews from past customers who have flown with Korean Air,Asiana Airlines, andAlaska Airlines from Seattle to Seoul to help guide your decision. You can also see how each airline stacks up in terms of entertainment options, comfort, food, crew/service, and boarding process.
Boarding
8.5
Crew
8.7
Entertainment
8.2
Food
8.1
Overall
8.4
Comfort
8.3
Reviews
1 / 20
10.0
ExcellentChris,Mar 2025
SEA - ICN
Boarding
8.5
Crew
8.7
Entertainment
8.2
Food
8.1
Overall
8.4
Comfort
8.3
Reviews
1 / 20
10.0
ExcellentChris,Mar 2025
SEA - ICN
Boarding
8.5
Crew
8.7
Entertainment
8.2
Food
8.1
Overall
8.4
Comfort
8.3
Reviews
1 / 20
10.0
ExcellentChris,Mar 2025
SEA - ICN
Boarding
8.5
Crew
8.7
Entertainment
8.2
Food
8.1
Overall
8.4
Comfort
8.3
Reviews
1 / 20
10.0
ExcellentChris,Mar 2025
SEA - ICN
Boarding
8.5
Crew
8.7
Entertainment
8.2
Food
8.1
Overall
8.4
Comfort
8.3
Reviews
1 / 20
10.0
ExcellentChris,Mar 2025
SEA - ICN
Boarding
8.5
Crew
8.7
Entertainment
8.2
Food
8.1
Overall
8.4
Comfort
8.3
Reviews
1 / 20
10.0
ExcellentChris,Mar 2025
SEA - ICN
Related info for your journey
Find useful and relevant information for your journey from Seattle to Seoul. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.
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Toggle through the tabs below to find thousands of options on Cheapflights for your next trip.
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Complete your trip
Complete your trip to Seoul by adding a car rental and/or hotel reservation to your travel itinerary.
Search flights from Seattle to Seoul by cabin class
Find flights from Seattle to Seoul, based on your preferred cabin class, be it economy, premium economy, business, or first class.
Seattle and Seoul flights
Browse other Seattle and Seoul flight options. Last updated on September 22, 2026.
Other flights from Seattle
Browse through other flights departing from Seattle. Flights are based on user searches made on Cheapflights and were last updated on September 22, 2026.
Popular flight searches
Check out other popular destinations found by fellow travelers in 2026
Other flights to Seoul
Explore flights to Seoul departing from other origins. Flights are based on user searches made on Cheapflights and were last updated on September 22, 2026.
Top 7 airlines flying from Seattle to Seoul
Discover the top 7 airlines that operate flights from Seattle to Seoul. Compare their services, reliability, and customer satisfaction ratings to choose the airline that best suits your travel preferences and needs. Over the last 7 days, Cheapflights users made 7,457,451 searches. Data last updated September 22, 2026.
| Airline | Cheapest | Average | Flexibility | On-time |
|---|---|---|---|---|
| Cheapest$160 | Average$718 | FlexibilityNo cancel fee | On-time85% | |
| Cheapest$335 | Average$338 | FlexibilityNo cancel fee | On-time75% | |
| Cheapest$523 | Average$681 | FlexibilityNo cancel fee | On-time67% | |
| Cheapest$686 | Average$878 | FlexibilityNo cancel fee | On-time72% | |
| Cheapest$788 | Average$890 | FlexibilityNo cancel fee | On-time76% | |
| Cheapest$829 | Average$1,064 | FlexibilityNo cancel fee | On-timeN/A | |
| Cheapest$848 | Average$1,082 | FlexibilityNo cancel fee | On-time81% |