$381+ Cheap flights from Seattle (SEA) to Incheon Intl (ICN)
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 10/24. Fares are subject to change and may not be available on all flights or dates of travel.
SEA — ICN
Oct 10 — Oct 171
Round-trip
1 adult, Economy
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Find cheap flights from Seattle to Incheon Intl 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 Incheon Intl are usually found in April or August, booked 69 days in advance, depart on a Wednesday or Monday and return on a Monday
Cheap flight deals from Seattle to Incheon Intl
Cheapest
Best
Last-minute
One-way
Cheapest flights from Seattle to Incheon IntlExplore the most affordable flight options available from Seattle to Incheon Intl. Find the lowest fares from popular airlines and budget airlines, with prices last updated on September 10, 2026.
Explore the most affordable flight options available from Seattle to Incheon Intl. Find the lowest fares from popular airlines and budget airlines, with prices last updated on September 10, 2026.
This Kiwi.com deal was found by Cheapflights users on 9/6. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 10/1311:45 am -
1 stop18h 40m
Sun 11/87:35 pm -
1 stop30h 10m
Deal found 9/6![Cathay Pacific logo]()
$853
This Kiwi.com deal was found by Cheapflights users on 9/6. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 10/46:39 am -
1 stop23h 01m
Fri 10/307:45 pm -
1 stop17h 40m
Deal found 9/6![Multiple Airlines logo]()
$854
This Kiwi.com deal was found by Cheapflights users on 9/6. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 10/46:39 am -
1 stop23h 01m
Sat 11/77:45 pm -
1 stop18h 18m
Deal found 9/6![Multiple Airlines logo]()
$855
This Kiwi.com deal was found by Cheapflights users on 9/5. Clicking the “Pick Dates” 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
Fri 11/137:45 pm -
1 stop20h 28m
Deal found 9/5![Multiple Airlines logo]()
$856
This Kiwi.com deal was found by Cheapflights users on 9/5. Clicking the “Pick Dates” 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 10/256:39 am -
1 stop22h 41m
Sat 11/77:45 pm -
1 stop18h 18m
Deal found 9/5![Multiple Airlines logo]()
$857
This Cathay Pacific deal was found by Cheapflights users on 9/6. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Cathay Pacific is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 9/3011:45 am -
1 stop20h 40m
Sun 11/17:35 pm -
1 stop30h 10m
Deal found 9/6![Cathay Pacific logo]()
$861
This oojo deal was found by Cheapflights users on 9/6. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure oojo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 11/1010:25 am -
1 stop21h 15m
Mon 11/3010:00 am -
1 stop39h 45m
Deal found 9/6![Cathay Pacific logo]()
$864
This Kiwi.com deal was found by Cheapflights users on 9/5. Clicking the “Pick Dates” 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 10/249:59 am -
1 stop18h 11m
Fri 11/137:45 pm -
1 stop20h 28m
Deal found 9/5![Multiple Airlines logo]()
$865
This Kiwi.com deal was found by Cheapflights users on 9/6. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 10/711:54 am -
1 stop17h 46m
Wed 11/47:45 pm -
1 stop14h 36m
Deal found 9/6![Multiple Airlines logo]()
$866
This Kiwi.com deal was found by Cheapflights users on 9/6. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 10/711:54 am -
1 stop17h 46m
Wed 11/117:45 pm -
1 stop14h 36m
Deal found 9/6![Multiple Airlines logo]()
$873
This eDestinos deal was found by Cheapflights users on 9/6. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure eDestinos is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 11/110:03 am -
2 stops21h 37m
Tue 11/103:00 pm -
1 stop34h 45m
Deal found 9/6![Cathay Pacific logo]()
$874
Best flights from Seattle to Incheon IntlDiscover carefully curated flight deals from Seattle to Incheon Intl that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated September 10, 2026.
Discover carefully curated flight deals from Seattle to Incheon Intl that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated September 10, 2026.
This Cathay Pacific deal was found by Cheapflights users on 9/7. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Cathay Pacific is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 11/610:03 am -
2 stops21h 37m
Sat 11/1410:00 am -
2 stops25h 41m
Deal found 9/7![Cathay Pacific logo]()
$1,123
This Delta deal was found by Cheapflights users on 9/5. Clicking the “Pick Dates” 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 9/237:15 am -
1 stop18h 05m
Wed 10/284:10 pm -
Nonstop9h 55m
Deal found 9/5![Delta logo]()
$1,198
This Alaska Airlines deal was found by Cheapflights users on 9/7. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 11/712:40 pm -
Nonstop11h 55m
Sat 11/148:00 pm -
Nonstop9h 55m
Deal found 9/7![Alaska Airlines logo]()
$1,215
This Korean Air deal was found by Cheapflights users on 9/7. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Korean Air is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 10/107:16 am -
1 stop18h 04m
Tue 11/106:45 pm -
Nonstop10h 06m
Deal found 9/7![Korean Air logo]()
$1,223
This Delta deal was found by Cheapflights users on 9/8. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 9/217:15 am -
1 stop18h 05m
Wed 9/304:40 pm -
Nonstop10h 00m
Deal found 9/8![Delta logo]()
$1,198
This Delta deal was found by Cheapflights users on 9/6. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 10/67:16 am -
1 stop18h 04m
Thu 10/224:40 pm -
Nonstop10h 00m
Deal found 9/6![Delta logo]()
$1,198
This Delta deal was found by Cheapflights users on 9/9. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 10/127:16 am -
1 stop18h 04m
Tue 11/104:10 pm -
Nonstop9h 55m
Deal found 9/9![Delta logo]()
$1,198
This Delta deal was found by Cheapflights users on 9/6. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 11/111:00 am -
Nonstop11h 55m
Tue 11/104:10 pm -
Nonstop9h 55m
Deal found 9/6![Delta logo]()
$1,215
This Delta deal was found by Cheapflights users on 9/5. Clicking the “Pick Dates” 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 10/71:00 pm -
Nonstop11h 50m
Fri 10/167:00 pm -
Nonstop10h 14m
Deal found 9/5![Delta logo]()
$1,215
This Delta deal was found by Cheapflights users on 9/8. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 10/237:16 am -
1 stop18h 04m
Mon 11/94:10 pm -
Nonstop9h 55m
Deal found 9/8![Delta logo]()
$1,220
This Delta deal was found by Cheapflights users on 9/6. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 10/107:16 am -
1 stop18h 04m
Tue 11/104:10 pm -
Nonstop9h 55m
Deal found 9/6![Delta logo]()
$1,220
Last-minute flights from Seattle to Incheon IntlDiscover last-minute flight deals from Seattle to Incheon Intl. Data last updated September 10, 2026 and is based on user searches.
Discover last-minute flight deals from Seattle to Incheon Intl. Data last updated September 10, 2026 and is based on user searches.
This oojo deal was found by Cheapflights users on 9/5. Clicking the “Pick Dates” 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 9/2411:45 am -
1 stop20h 40m
Fri 10/21:55 am -
1 stop24h 10m
Deal found 9/5![Cathay Pacific logo]()
$876
This Cathay Pacific deal was found by Cheapflights users on 9/6. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Cathay Pacific is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 9/3011:45 am -
1 stop20h 40m
Tue 11/101:50 pm -
1 stop35h 55m
Deal found 9/6![Cathay Pacific logo]()
$861
This oojo deal was found by Cheapflights users on 9/6. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure oojo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 9/3011:45 am -
1 stop20h 40m
Sat 10/106:40 am -
1 stop19h 25m
Deal found 9/6![Cathay Pacific logo]()
$875
This Kiwi.com deal was found by Cheapflights users on 9/6. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 10/46:39 am -
1 stop23h 01m
Fri 10/307:45 pm -
1 stop17h 40m
Deal found 9/6![Multiple Airlines logo]()
$854
This Kiwi.com deal was found by Cheapflights users on 9/6. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 10/46:39 am -
1 stop23h 01m
Sat 11/77:45 pm -
1 stop18h 18m
Deal found 9/6![Multiple Airlines logo]()
$855
This Kiwi.com deal was found by Cheapflights users on 9/6. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 10/711:54 am -
1 stop17h 46m
Wed 11/47:45 pm -
1 stop14h 36m
Deal found 9/6![Multiple Airlines logo]()
$866
This Kiwi.com deal was found by Cheapflights users on 9/6. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 10/711:54 am -
1 stop17h 46m
Wed 11/117:45 pm -
1 stop14h 36m
Deal found 9/6![Multiple Airlines logo]()
$873
This Kiwi.com deal was found by Cheapflights users on 9/6. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 10/1311:45 am -
1 stop18h 40m
Sun 11/87:35 pm -
1 stop30h 10m
Deal found 9/6![Cathay Pacific logo]()
$853
This oojo deal was found by Cheapflights users on 9/6. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure oojo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 10/1911:45 am -
1 stop20h 40m
Wed 11/111:55 am -
1 stop23h 50m
Deal found 9/6![Cathay Pacific logo]()
$864
This Kiwi.com deal was found by Cheapflights users on 9/5. Clicking the “Pick Dates” 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 10/249:59 am -
1 stop18h 11m
Fri 11/137:45 pm -
1 stop20h 28m
Deal found 9/5![Multiple Airlines logo]()
$865
This Kiwi.com deal was found by Cheapflights users on 9/5. Clicking the “Pick Dates” 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 10/256:39 am -
1 stop22h 41m
Sat 11/77:45 pm -
1 stop18h 18m
Deal found 9/5![Multiple Airlines logo]()
$857
One-way flights from Seattle to Incheon IntlSearch for one-way flight options from Seattle to Incheon Intl. Find affordable one-way fares based on user searches. Data last updated September 10, 2026.
Search for one-way flight options from Seattle to Incheon Intl. Find affordable one-way fares based on user searches. Data last updated September 10, 2026.
This Mytrip deal was found by Cheapflights users on 9/9. 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 Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 10/245:50 am -
3 stops20h 55m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/9![Multiple Airlines logo]()
$381
This Kiwi.com deal was found by Cheapflights users on 9/5. Clicking the “Pick Dates” 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 11/711:26 am -
3 stops38h 19m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/5![Multiple Airlines logo]()
$401
This Kiwi.com deal was found by Cheapflights users on 9/10. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 11/118:54 am -
1 stop19h 26m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/10![Multiple Airlines logo]()
$409
This Kiwi.com deal was found by Cheapflights users on 9/7. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 10/319:59 am -
1 stop19h 21m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/7![Multiple Airlines logo]()
$410
This Kiwi.com deal was found by Cheapflights users on 9/9. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 10/183:30 pm -
2 stops35h 15m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/9![Multiple Airlines logo]()
$414
This Kiwi.com deal was found by Cheapflights users on 9/6. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 10/2111:54 am -
1 stop17h 46m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/6![Multiple Airlines logo]()
$416
This Kiwi.com deal was found by Cheapflights users on 9/6. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 11/69:39 pm -
2 stops28h 06m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/6![Multiple Airlines logo]()
$421
This oojo deal was found by Cheapflights users on 9/5. Clicking the “Pick Dates” 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.
Tue 9/1512:25 pm -
1 stop32h 15m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/5![Cathay Pacific logo]()
$424
This Kiwi.com deal was found by Cheapflights users on 9/7. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 10/229:36 pm -
1 stop32h 04m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/7![Multiple Airlines logo]()
$425
Find flight deals from Seattle to Incheon Intl
Discover tips and strategies to find the most affordable flight options for your journey from Seattle (SEA) to Incheon Intl (ICN). 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 10, 2026.
Most accurate provider | FlightHub 3 stars |
|---|---|
Most trusted provider | FlightHub 3 stars |
Round-trip from | $853 (Kiwi.com) |
One-way from | $381 (Mytrip) |
Popular in | December |
Cheapest in | April |
Average price | $812 |
Good round-trip deal | $803 or less |
Good one-way deal | $427 or less |
Cheapflights Fare Finder
Customize your flight search to find flights from Seattle to Incheon Intl 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 10, 2026.
Use the filters below to find and compare flights from Seattle to Incheon Intl Airport 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 11/26
4:59 pm-1:50 pm
2 stops27h 51m
Incheon Intl
Wed 12/31
12:00 am-7:00 am
Nonstop0h 00m
$496
SeattleIncheon
SEA Seattle/Tacoma Intl - ICN Incheon Intl
SEAICN
Seattle/Tacoma Intl
Thu 3/4
12:10 am-11:20 am
1 stop18h 10m
Incheon Intl
Wed 12/31
12:00 am-7:00 am
Nonstop0h 00m
$497
SeattleIncheon
SEA Seattle/Tacoma Intl - ICN Incheon Intl
SEAICN
Seattle/Tacoma Intl
Sat 3/6
10:25 am-12:45 pm
1 stop33h 20m
Incheon Intl
Wed 12/31
12:00 am-7:00 am
Nonstop0h 00m
$501
SeattleIncheon
SEA Seattle/Tacoma Intl - ICN Incheon Intl
SEAICN
Seattle/Tacoma Intl
Sat 9/26
5:59 pm-12:40 pm
2 stops26h 41m
Incheon Intl
Wed 12/31
12:00 am-7:00 am
Nonstop0h 00m
$595
Quickest round-trip
SeattleIncheon
SEA Seattle/Tacoma Intl - ICN Incheon Intl
SEAICN
Seattle/Tacoma Intl
Wed 10/14
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
Sun 10/11
12:50 pm-4:40 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
Thu 10/8
12:50 pm-4:40 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
Mon 9/28
1:35 pm-5:30 pm
Nonstop11h 55m
Incheon Intl
Wed 12/31
12:00 am-7:00 am
Nonstop0h 00m
$684
SeattleIncheon
SEA Seattle/Tacoma Intl - ICN Incheon Intl
SEAICN
Seattle/Tacoma Intl
Fri 11/6
10:03 am-12:40 am
2 stops21h 37m
Incheon Intl
Sat 11/14
10:00 am-6:41 pm
2 stops25h 41m
$1,123
SeattleIncheon
SEA Seattle/Tacoma Intl - ICN Incheon Intl
SEAICN
Seattle/Tacoma Intl
Wed 9/23
7:15 am-5:20 pm
1 stop18h 05m
Incheon Intl
Wed 10/28
4:10 pm-10:05 am
Nonstop9h 55m
$1,198
Showing 1-10 of 19 resultsSorted by cheapest first
Compare providers for flights from Seattle to Incheon Intl
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 Incheon Intl 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 Accuracy2 stars | Trust Score*1 star | |
| Price Accuracy3 stars | Trust Score*3 stars | |
| Price Accuracy2 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-Incheon Intl Airport flights, users find the pricing of FlightHub to be most consistent on Cheapflights vs. FlightHub Users can find the same prices on Seattle-Incheon Intl Airport flight deals on Cheapflights vs. FlightHub >95% of the time. Price accuracy is based on data collected from Seattle-Incheon Intl Airport flight searches over the past month and is updated monthly.
- Most trusted provider: When it comes to deals on Seattle-Incheon Intl Airport 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-Incheon Intl Airport 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 Incheon Intl
Have a flexible travel schedule? Discover the best time to fly to Incheon Intl from Seattle with our price prediction graph.
SEA-ICN
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 Incheon Intl Airport
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How far ahead should I book a flight from Seattle to Incheon Intl Airport?
The price you pay for your flight from Seattle to Incheon Intl Airport may vary depending on when you book. For the best chance of a lower fare, look to book 68 days in advance of your trip. Fares are likely to increase a fortnight or so before your departure date.
What is the cheapest month to book a flight from Seattle to Incheon Intl Airport?
Currently, April is the cheapest month in which you can book a flight from Seattle to Incheon Intl Airport (average of $338). Flying from Seattle to Incheon Intl Airport in December is currently the most expensive (average of $1,398). 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 ICN?
Find hourly flight availability from Seattle to Incheon Intl. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated September 10, 2026.
When flying from Seattle to Incheon Intl Airport, the time of day you fly usually plays a role in the price. Save by searching for a flight at noon, which can drop the price by up to 76% versus a flight in the afternoon.
How often are flights from Seattle to Incheon delayed?
About 28% of weekly flights between Seattle and Incheon have experienced delays in the past year, with the average delay time being 150 minutes.
What is the most punctual flight time for Seattle to Incheon flights?
Historically, flights departing at night are less likely to be delayed, whereas flights leaving in the evening tend to experience delays more often.
What day of the week experiences the fewest flight delays on this route?
Tuesday tends to have the lowest number of delays on this route, whereas Thursday has historically faced a higher average of delays compared to other days of the week.
Which airline has the best punctuality record on Seattle to Incheon flights?
Over the last year, Delta have had the lowest number of delays on this route, with just 19% of flights being delayed.
What’s the top layover airport for flights from Seattle to Incheon Intl Airport?
Share of 1-stop round-trip flights from Seattle to Incheon Intl Airport chosen by Cheapflights users in the past 12 months, using the same layover each way.
Hong Kong (HKG) – chosen by Cheapflights users on 75% of 1-stop itineraries from Seattle to Incheon Intl Airport on Cheapflights.
What’s the cheapest layover airport for flights from Seattle to Incheon Intl Airport?
Average round-trip fare for 1-stop flights from Seattle to Incheon Intl Airport, 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 $855.
What’s the fastest layover option from Seattle to Incheon Intl Airport?
Shortest average travel time for 1-stop one-way flights from Seattle to Incheon Intl Airport, 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 Incheon Intl Airport?
Average layover duration for 1-stop one-way flights from Seattle to Incheon Intl Airport, 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.
The best insider tips for Seattle to Incheon Intl Airport 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 Incheon Intl Airport trip
Our travel experts
Reviews of airlines servicing Incheon Intl
Get insights into the airlines that provide service to Incheon Intl. 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 Incheon Intl. Reviews last updated September 10, 2026.
Peruse reviews from past customers who have flown with Korean Air,Asiana Airlines, andAlaska Airlines from Seattle to Incheon Intl Airport 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.
Food
8.1
Crew
8.7
Overall
8.4
Boarding
8.5
Entertainment
8.2
Comfort
8.3
Reviews
1 / 20
10.0
ExcellentChris,Mar 2025
SEA - ICN
Food
8.1
Crew
8.7
Overall
8.4
Boarding
8.5
Entertainment
8.2
Comfort
8.3
Reviews
1 / 20
10.0
ExcellentChris,Mar 2025
SEA - ICN
Food
8.1
Crew
8.7
Overall
8.4
Boarding
8.5
Entertainment
8.2
Comfort
8.3
Reviews
1 / 20
10.0
ExcellentChris,Mar 2025
SEA - ICN
Food
8.1
Crew
8.7
Overall
8.4
Boarding
8.5
Entertainment
8.2
Comfort
8.3
Reviews
1 / 20
10.0
ExcellentChris,Mar 2025
SEA - ICN
Food
8.1
Crew
8.7
Overall
8.4
Boarding
8.5
Entertainment
8.2
Comfort
8.3
Reviews
1 / 20
10.0
ExcellentChris,Mar 2025
SEA - ICN
Food
8.1
Crew
8.7
Overall
8.4
Boarding
8.5
Entertainment
8.2
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 Incheon Intl. 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 Incheon Intl Airport?
Book flights to Incheon Intl Airport if you plan to visit one of these locationsSeongnam
Suwon
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Explore flights to Incheon Intl departing from other origins. Flights are based on user searches made on Cheapflights and were last updated on September 10, 2026.
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Top 7 airlines flying from Seattle to Incheon Intl
Discover the top 7 airlines that operate flights from Seattle to Incheon Intl. 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 10, 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$673 | FlexibilityNo cancel fee | On-time67% | |
| Cheapest$686 | Average$878 | FlexibilityNo cancel fee | On-time72% | |
| Cheapest$776 | Average$885 | FlexibilityNo cancel fee | On-time76% | |
| Cheapest$823 | Average$1,032 | FlexibilityNo cancel fee | On-timeN/A | |
| Cheapest$848 | Average$1,023 | FlexibilityNo cancel fee | On-time81% |