$412+ 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 11/4. Fares are subject to change and may not be available on all flights or dates of travel.
SEA — ICN
Nov 25 — Dec 21
Round-trip
1 adult, Economy
We work with more than 300 partners to bring you better travel deals
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 8 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 October 26, 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 October 26, 2026.
This Kiwi.com deal was found by Cheapflights users on 10/22. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 11/1610:25 am -
1 stop21h 15m
Wed 11/251:55 am -
1 stop23h 50m
Deal found 10/22![Cathay Pacific logo]()
$856
This Kiwi.com deal was found by Cheapflights users on 10/22. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 11/1810:25 am -
1 stop21h 15m
Mon 11/231:55 am -
1 stop23h 50m
Deal found 10/22![Cathay Pacific logo]()
$858
This Kiwi.com deal was found by Cheapflights users on 10/24. Clicking the “Pick Dates” 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 12/77:20 am -
1 stop21h 00m
Mon 12/147:45 pm -
1 stop17h 19m
Deal found 10/24![Multiple Airlines logo]()
$861
This Cathay Pacific deal was found by Cheapflights users on 10/22. 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 Cathay Pacific is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 11/1810:25 am -
1 stop34h 25m
Sun 11/221:50 pm -
1 stop35h 55m
Deal found 10/22![Cathay Pacific logo]()
$862
This Kiwi.com deal was found by Cheapflights users on 10/25. Clicking the “Pick Dates” 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 11/3010:25 am -
1 stop21h 15m
Mon 12/710:00 am -
1 stop39h 45m
Deal found 10/25![Cathay Pacific logo]()
$865
This Air Canada deal was found by Cheapflights users on 10/22. 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 Air Canada is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 11/87:05 pm -
1 stop29h 05m
Tue 11/176:55 pm -
1 stop12h 37m
Deal found 10/22![Air Canada logo]()
$866
This deal was found by Cheapflights users on 10/25. Clicking the “Pick Dates” 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.
Mon 11/1611:00 am -
Nonstop11h 55m
Thu 12/104:10 pm -
Nonstop9h 55m
Deal found 10/25![Korean Air logo]()
$867
This deal was found by Cheapflights users on 10/25. Clicking the “Pick Dates” 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 11/1211:00 am -
Nonstop11h 55m
Wed 12/24:10 pm -
Nonstop9h 55m
Deal found 10/25![Korean Air logo]()
$868
This deal was found by Cheapflights users on 10/25. Clicking the “Pick Dates” 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.
Mon 11/1612:10 am -
Nonstop12h 10m
Thu 12/109:20 pm -
Nonstop9h 50m
Deal found 10/25![Korean Air logo]()
$869
This deal was found by Cheapflights users on 10/25. Clicking the “Pick Dates” 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.
Tue 11/1011:00 am -
Nonstop11h 55m
Fri 12/49:20 pm -
Nonstop9h 50m
Deal found 10/25![Korean Air logo]()
$870
This Kiwi.com deal was found by Cheapflights users on 10/25. Clicking the “Pick Dates” 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 12/57:36 pm -
1 stop32h 44m
Fri 12/117:45 pm -
1 stop29h 31m
Deal found 10/25![Multiple Airlines logo]()
$871
This deal was found by Cheapflights users on 10/24. Clicking the “Pick Dates” 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.
Mon 11/1611:00 am -
Nonstop11h 55m
Mon 11/239:20 pm -
Nonstop9h 50m
Deal found 10/24![Korean Air logo]()
$872
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 October 26, 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 October 26, 2026.
This Delta deal was found by Cheapflights users on 10/25. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 11/912:30 pm -
Nonstop12h 15m
Mon 11/166:45 pm -
Nonstop10h 06m
Deal found 10/25![Delta logo]()
$894
This Korean Air deal was found by Cheapflights users on 10/25. Clicking the “Pick Dates” 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.
Mon 11/97:20 am -
1 stop17h 20m
Mon 11/164:10 pm -
Nonstop9h 55m
Deal found 10/25![Korean Air logo]()
$901
This Cathay Pacific deal was found by Cheapflights users on 10/23. Clicking the “Pick Dates” 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.
Thu 2/1810:25 am -
1 stop21h 15m
Sat 3/66:45 am -
1 stop19h 00m
Deal found 10/23![Cathay Pacific logo]()
$912
This United Airlines deal was found by Cheapflights users on 10/22. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 11/57:00 am -
1 stop16h 15m
Thu 11/1212:45 pm -
2 stops23h 52m
Deal found 10/22![United Airlines logo]()
$913
This Korean Air deal was found by Cheapflights users on 10/24. Clicking the “Pick Dates” 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.
Tue 11/177:20 am -
1 stop17h 20m
Sun 12/69:20 pm -
Nonstop9h 50m
Deal found 10/24![Korean Air logo]()
$901
This Cathay Pacific deal was found by Cheapflights users on 10/24. Clicking the “Pick Dates” 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.
Sun 11/85:59 pm -
2 stops31h 36m
Wed 11/111:55 am -
2 stops30h 09m
Deal found 10/24![Cathay Pacific logo]()
$1,091
This Delta deal was found by Cheapflights users on 10/22. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 11/2712:30 pm -
Nonstop12h 15m
Sat 12/126:45 pm -
Nonstop10h 11m
Deal found 10/22![Delta logo]()
$1,144
This Korean Air deal was found by Cheapflights users on 10/22. 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 Korean Air is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 11/277:20 am -
1 stop17h 20m
Sat 12/124:10 pm -
Nonstop9h 55m
Deal found 10/22![Korean Air logo]()
$1,151
This Delta deal was found by Cheapflights users on 10/25. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 11/2312:30 pm -
Nonstop12h 15m
Mon 11/306:45 pm -
Nonstop10h 06m
Deal found 10/25![Delta logo]()
$1,194
This Delta deal was found by Cheapflights users on 10/23. Clicking the “Pick Dates” 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 2/312:50 pm -
Nonstop11h 55m
Fri 4/307:00 pm -
Nonstop10h 20m
Deal found 10/23![Delta logo]()
$1,194
Last-minute flights from Seattle to Incheon IntlDiscover last-minute flight deals from Seattle to Incheon Intl. Data last updated October 26, 2026 and is based on user searches.
Discover last-minute flight deals from Seattle to Incheon Intl. Data last updated October 26, 2026 and is based on user searches.
This Air Canada deal was found by Cheapflights users on 10/22. 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 Air Canada is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 11/87:05 pm -
1 stop29h 05m
Tue 11/176:55 pm -
1 stop12h 37m
Deal found 10/22![Air Canada logo]()
$866
This deal was found by Cheapflights users on 10/25. Clicking the “Pick Dates” 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.
Tue 11/1011:00 am -
Nonstop11h 55m
Fri 12/49:20 pm -
Nonstop9h 50m
Deal found 10/25![Korean Air logo]()
$870
This deal was found by Cheapflights users on 10/25. Clicking the “Pick Dates” 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 11/1211:00 am -
Nonstop11h 55m
Wed 12/24:10 pm -
Nonstop9h 55m
Deal found 10/25![Korean Air logo]()
$868
This FlightHub deal was found by Cheapflights users on 10/22. 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 FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 11/153:15 pm -
1 stop32h 55m
Tue 12/86:55 pm -
1 stop16h 27m
Deal found 10/22![Air Canada logo]()
$876
This Kiwi.com deal was found by Cheapflights users on 10/22. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 11/1610:25 am -
1 stop21h 15m
Wed 11/251:55 am -
1 stop23h 50m
Deal found 10/22![Cathay Pacific logo]()
$856
This deal was found by Cheapflights users on 10/25. Clicking the “Pick Dates” 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.
Mon 11/1611:00 am -
Nonstop11h 55m
Thu 12/104:10 pm -
Nonstop9h 55m
Deal found 10/25![Korean Air logo]()
$867
This deal was found by Cheapflights users on 10/25. Clicking the “Pick Dates” 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.
Mon 11/1612:10 am -
Nonstop12h 10m
Thu 12/109:20 pm -
Nonstop9h 50m
Deal found 10/25![Korean Air logo]()
$869
This deal was found by Cheapflights users on 10/25. Clicking the “Pick Dates” 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.
Mon 11/1611:00 am -
Nonstop11h 55m
Tue 12/89:20 pm -
Nonstop9h 50m
Deal found 10/25![Korean Air logo]()
$871
This deal was found by Cheapflights users on 10/24. Clicking the “Pick Dates” 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.
Mon 11/1611:00 am -
Nonstop11h 55m
Mon 11/239:20 pm -
Nonstop9h 50m
Deal found 10/24![Korean Air logo]()
$872
This Kiwi.com deal was found by Cheapflights users on 10/22. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 11/1810:25 am -
1 stop21h 15m
Mon 11/231:55 am -
1 stop23h 50m
Deal found 10/22![Cathay Pacific logo]()
$858
This Cathay Pacific deal was found by Cheapflights users on 10/22. 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 Cathay Pacific is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 11/1810:25 am -
1 stop21h 15m
Wed 12/910:00 am -
1 stop39h 45m
Deal found 10/22![Cathay Pacific logo]()
$862
This Kiwi.com deal was found by Cheapflights users on 10/25. Clicking the “Pick Dates” 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 11/3010:25 am -
1 stop21h 15m
Mon 12/710:00 am -
1 stop39h 45m
Deal found 10/25![Cathay Pacific logo]()
$865
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 October 26, 2026.
Search for one-way flight options from Seattle to Incheon Intl. Find affordable one-way fares based on user searches. Data last updated October 26, 2026.
This SmartFares deal was found by Cheapflights users on 10/24. Clicking the “Pick Dates” 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.
Wed 11/410:25 am -
1 stop21h 15m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 10/24![Cathay Pacific logo]()
$412
This Kiwi.com deal was found by Cheapflights users on 10/26. Clicking the “Pick Dates” 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 1/165:47 pm -
1 stop34h 33m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 10/26![Multiple Airlines logo]()
$418
This SmartFares deal was found by Cheapflights users on 10/22. 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 SmartFares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 11/1010:25 am -
1 stop33h 20m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 10/22![Cathay Pacific logo]()
$422
This Air Canada deal was found by Cheapflights users on 10/24. Clicking the “Pick Dates” 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.
Wed 11/47:05 pm -
1 stop29h 05m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 10/24![Air Canada logo]()
$425
This Expedia deal was found by Cheapflights users on 10/25. Clicking the “Pick Dates” 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.
Sun 1/177:05 pm -
1 stop29h 05m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 10/25![Air Canada logo]()
$426
This FlightHub deal was found by Cheapflights users on 10/21. 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 FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 11/2410:25 am -
1 stop33h 20m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 10/21![Cathay Pacific logo]()
$430
This Kiwi.com deal was found by Cheapflights users on 10/25. Clicking the “Pick Dates” 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 1/97:29 pm -
1 stop32h 51m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 10/25![Multiple Airlines logo]()
$434
This Mytrip deal was found by Cheapflights users on 10/26. Clicking the “Pick Dates” 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.
Mon 11/210:25 am -
1 stop21h 15m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 10/26![Cathay Pacific logo]()
$437
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 October 26, 2026.
Most accurate provider | FlightHub 3 stars |
|---|---|
Most trusted provider | FlightHub 3 stars |
Round-trip from | $856 (Kiwi.com) |
One-way from | $412 (SmartFares) |
Popular in | December |
Cheapest in | April |
Average price | $1,192 |
Good round-trip deal | $851 or less |
Good one-way deal | $444 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 October 26, 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 11/12
12:30 pm-5:45 pm
Nonstop12h 15m
Incheon Intl
Wed 12/31
12:00 am-7:00 am
Nonstop0h 00m
$448
Quickest round-trip
SeattleIncheon
SEA Seattle/Tacoma Intl - ICN Incheon Intl
SEAICN
Seattle/Tacoma Intl
Thu 11/12
12:40 pm-5:35 pm
Nonstop11h 55m
Incheon Intl
Wed 12/31
12:00 am-7:00 am
Nonstop0h 00m
$448
SeattleIncheon
SEA Seattle/Tacoma Intl - ICN Incheon Intl
SEAICN
Seattle/Tacoma Intl
Wed 11/18
12:30 pm-5:45 pm
Nonstop12h 15m
Incheon Intl
Wed 12/31
12:00 am-7:00 am
Nonstop0h 00m
$448
SeattleIncheon
SEA Seattle/Tacoma Intl - ICN Incheon Intl
SEAICN
Seattle/Tacoma Intl
Wed 11/11
12:20 pm-5:40 am
2 stops24h 20m
Incheon Intl
Wed 12/31
12:00 am-7:00 am
Nonstop0h 00m
$452
SeattleIncheon
SEA Seattle/Tacoma Intl - ICN Incheon Intl
SEAICN
Seattle/Tacoma Intl
Sun 11/15
6:30 pm-4:15 pm
2 stops28h 45m
Incheon Intl
Wed 12/31
12:00 am-7:00 am
Nonstop0h 00m
$452
SeattleIncheon
SEA Seattle/Tacoma Intl - ICN Incheon Intl
SEAICN
Seattle/Tacoma Intl
Thu 11/12
10:35 am-5:10 am
1 stop25h 35m
Incheon Intl
Wed 12/31
12:00 am-7:00 am
Nonstop0h 00m
$454
SeattleIncheon
SEA Seattle/Tacoma Intl - ICN Incheon Intl
SEAICN
Seattle/Tacoma Intl
Mon 11/23
12:30 pm-5:45 pm
Nonstop12h 15m
Incheon Intl
Wed 12/31
12:00 am-7:00 am
Nonstop0h 00m
$578
SeattleIncheon
SEA Seattle/Tacoma Intl - ICN Incheon Intl
SEAICN
Seattle/Tacoma Intl
Tue 11/24
12:30 pm-5:45 pm
Nonstop12h 15m
Incheon Intl
Wed 12/31
12:00 am-7:00 am
Nonstop0h 00m
$578
SeattleIncheon
SEA Seattle/Tacoma Intl - ICN Incheon Intl
SEAICN
Seattle/Tacoma Intl
Mon 11/2
12:30 pm-5:45 pm
Nonstop12h 15m
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 11/9
12:30 pm-5:45 pm
Nonstop12h 15m
Incheon Intl
Mon 11/16
6:45 pm-11:51 am
Nonstop10h 06m
$894
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 October.
| 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 Accuracy- | Trust Score*1 star | |
| Price Accuracy3 stars | Trust Score*3 stars | |
| Price Accuracy2 stars | Trust Score*1 star | |
| Price Accuracy3 stars | Trust Score*3 stars | |
| 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
Prices
Airlines
Delays
More
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 7 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 $1,457). 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 October 26, 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 78% versus a flight in the afternoon.
How often are flights from Seattle to Incheon delayed?
About 25% of weekly flights between Seattle and Incheon have experienced delays in the past year, with the average delay time being 147 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 18% 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 81% 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 $835.
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 Vancouver (YVR) have the shortest average one-way travel time for 1-stop routes: 14h 00m.
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 Vancouver (YVR) offer the fastest connection on this route, with an average layover time of 1h 23m.
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 October 26, 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.
Crew
8.7
Comfort
8.3
Boarding
8.5
Overall
8.4
Food
8.1
Entertainment
8.2
Reviews
1 / 20
10.0
ExcellentChris,Mar 2025
SEA - ICN
Crew
8.7
Comfort
8.3
Boarding
8.5
Overall
8.4
Food
8.1
Entertainment
8.2
Reviews
1 / 20
10.0
ExcellentChris,Mar 2025
SEA - ICN
Crew
8.7
Comfort
8.3
Boarding
8.5
Overall
8.4
Food
8.1
Entertainment
8.2
Reviews
1 / 20
10.0
ExcellentChris,Mar 2025
SEA - ICN
Crew
8.7
Comfort
8.3
Boarding
8.5
Overall
8.4
Food
8.1
Entertainment
8.2
Reviews
1 / 20
10.0
ExcellentChris,Mar 2025
SEA - ICN
Crew
8.7
Comfort
8.3
Boarding
8.5
Overall
8.4
Food
8.1
Entertainment
8.2
Reviews
1 / 20
10.0
ExcellentChris,Mar 2025
SEA - ICN
Crew
8.7
Comfort
8.3
Boarding
8.5
Overall
8.4
Food
8.1
Entertainment
8.2
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 locationsSuwon
Browse thousands of different options on Cheapflights for your next trip
Toggle through the tabs below to find thousands of options on Cheapflights for your next trip.
Alternative routes
Complete your trip
Flights by cabin class
Incheon Intl flight routes
Other flight options
Other flights from Seattle
Popular flights
Alternative routes for Seattle to Incheon Intl
See prices for flight routes from nearby airports that may be better suited for you.
Complete your trip
Complete your trip to Incheon Intl by adding a car rental and/or hotel reservation to your travel itinerary.
Search flights from Seattle to Incheon Intl by cabin class
Find flights from Seattle to Incheon Intl, based on your preferred cabin class, be it economy, premium economy, business, or first class.
Other flights to Incheon Intl
Explore flights to Incheon Intl departing from other origins. Flights are based on user searches made on Cheapflights and were last updated on October 26, 2026.
Seattle and Incheon Intl flights
Browse other Seattle and Incheon Intl flight options. Last updated on October 26, 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 October 26, 2026.
Popular flight searches
Check out other popular destinations found by fellow travelers in 2026
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 October 26, 2026.
| Airline | Cheapest | Average | Flexibility | On-time |
|---|---|---|---|---|
| Cheapest$335 | Average$338 | FlexibilityNo cancel fee | On-time75% | |
| Cheapest$523 | Average$787 | FlexibilityNo cancel fee | On-time67% | |
| Cheapest$749 | Average$847 | FlexibilityNo cancel fee | On-time72% | |
| Cheapest$794 | Average$899 | FlexibilityNo cancel fee | On-time76% | |
| Cheapest$852 | Average$1,120 | FlexibilityNo cancel fee | On-time81% | |
| Cheapest$868 | Average$1,115 | FlexibilityNo cancel fee | On-timeN/A | |
| Cheapest$950 | Average$1,139 | FlexibilityNo cancel fee | On-time74% |