$571+ Cheap flights from Seoul (SEL) to St. Louis (STL)
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 10/16. Fares are subject to change and may not be available on all flights or dates of travel.
SEL — STL
Oct 23 — Oct 301
Round-trip
1 adult, Economy
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Find cheap flights from Seoul to St. Louis 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
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Review each provider’s pricing and select the best option for you! Book through your favorite provider’s website for a seamless experience.Cheap flight deals from Seoul to St. Louis
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Best
Last-minute
One-way
Cheapest flights from Seoul to St. LouisExplore the most affordable flight options available from Seoul to St. Louis. Find the lowest fares from popular airlines and budget airlines, with prices last updated on September 23, 2026.
Explore the most affordable flight options available from Seoul to St. Louis. Find the lowest fares from popular airlines and budget airlines, with prices last updated on September 23, 2026.
This WhyPayMore 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 WhyPayMore is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 12/226:55 pm -
2 stops35h 31m
Tue 1/124:05 pm -
2 stops34h 05m
Deal found 9/19![Air Canada logo]()
$1,151
This American Airlines 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 10/205:50 pm -
1 stop29h 30m
Tue 10/276:32 am -
1 stop20h 13m
Deal found 9/19![American Airlines logo]()
$1,160
This American 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 11/66:50 pm -
1 stop16h 29m
Fri 11/135:00 am -
1 stop20h 45m
Deal found 9/22![American Airlines logo]()
$1,167
This Air Canada 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 Air Canada is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 10/205:45 pm -
2 stops34h 15m
Tue 10/274:05 pm -
2 stops34h 05m
Deal found 9/20![Air Canada logo]()
$1,195
This Air Canada 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 Air Canada is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 12/186:55 pm -
2 stops35h 31m
Fri 1/154:05 pm -
2 stops34h 05m
Deal found 9/21![Air Canada logo]()
$1,241
This WhyPayMore 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 WhyPayMore is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 12/198:10 pm -
1 stop34h 16m
Sat 1/164:05 pm -
2 stops34h 05m
Deal found 9/20![Air Canada logo]()
$1,256
This American 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 12/186:50 pm -
2 stops28h 39m
Fri 1/155:29 am -
1 stop19h 56m
Deal found 9/21![American Airlines logo]()
$1,258
Best flights from Seoul to St. LouisDiscover carefully curated flight deals from Seoul to St. Louis that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated September 23, 2026.
Discover carefully curated flight deals from Seoul to St. Louis that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated September 23, 2026.
This American 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 11/66:50 pm -
2 stops20h 09m
Fri 11/135:00 am -
1 stop20h 45m
Deal found 9/22![American Airlines logo]()
$1,167
This WhyPayMore 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 WhyPayMore is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 12/228:10 pm -
1 stop34h 16m
Tue 1/124:05 pm -
2 stops34h 05m
Deal found 9/21![Air Canada logo]()
$1,171
This Delta 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 10/207:40 pm -
1 stop33h 05m
Tue 10/275:35 pm -
1 stop32h 15m
Deal found 9/20![Delta logo]()
$1,292
This United 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 12/2212:45 pm -
2 stops24h 45m
Tue 1/121:09 pm -
3 stops25h 31m
Deal found 9/21![United Airlines logo]()
$1,292
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.
Thu 11/57:35 pm -
2 stops36h 08m
Mon 11/97:26 am -
2 stops38h 19m
Deal found 9/18![Cathay Pacific logo]()
$1,293
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 12/226:40 pm -
1 stop15h 06m
Tue 1/1210:30 am -
1 stop38h 20m
Deal found 9/21![Delta logo]()
$1,292
Last-minute flights from Seoul to St. LouisDiscover last-minute flight deals from Seoul to St. Louis. Data last updated September 23, 2026 and is based on user searches.
Discover last-minute flight deals from Seoul to St. Louis. Data last updated September 23, 2026 and is based on user searches.
This American Airlines 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 10/205:50 pm -
1 stop29h 30m
Tue 10/276:32 am -
1 stop20h 13m
Deal found 9/19![American Airlines logo]()
$1,160
This Air Canada 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 Air Canada is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 10/205:45 pm -
2 stops34h 15m
Tue 10/274:05 pm -
2 stops34h 05m
Deal found 9/20![Air Canada logo]()
$1,195
This Delta 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 10/207:40 pm -
1 stop33h 05m
Tue 10/275:35 pm -
1 stop32h 15m
Deal found 9/20![Delta logo]()
$1,292
This Korean Air 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 Korean Air is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 10/209:20 am -
1 stop16h 43m
Tue 10/276:21 am -
1 stop19h 29m
Deal found 9/20![Multiple Airlines logo]()
$1,385
One-way flights from Seoul to St. LouisSearch for one-way flight options from Seoul to St. Louis. Find affordable one-way fares based on user searches. Data last updated September 23, 2026.
Search for one-way flight options from Seoul to St. Louis. Find affordable one-way fares based on user searches. Data last updated September 23, 2026.
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.
Fri 10/167:15 pm -
3 stops37h 42m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/20![Multiple Airlines logo]()
$571
This Kiwi.com deal was found by Cheapflights users on 9/23. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 10/187:15 pm -
2 stops38h 00m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/23![Multiple Airlines logo]()
$635
This Mytrip 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 Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 10/155:45 pm -
3 stops32h 50m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/20![Multiple Airlines logo]()
$653
This Kiwi.com deal was found by Cheapflights users on 9/23. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 10/176:00 pm -
2 stops31h 31m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/23![Multiple Airlines logo]()
$690
This Air Canada 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 Air Canada is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 10/157:05 pm -
1 stop39h 15m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/20![Air Canada logo]()
$829
This Travelocity deal was found by Cheapflights users on 9/23. 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 Travelocity is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 10/177:05 pm -
1 stop32h 55m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/23![Air Canada logo]()
$921
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.
Thu 12/318:40 pm -
3 stops29h 06m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/20![Multiple Airlines logo]()
$938
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.
Thu 1/78:40 pm -
3 stops52h 40m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/20![Multiple Airlines logo]()
$1,044
Find flight deals from Seoul to St. Louis
Discover tips and strategies to find the most affordable flight options for your journey from Seoul (SEL) to St. Louis (STL). 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 23, 2026.
Most accurate provider | FlightHub 3 stars |
|---|---|
Most trusted provider | FlightHub 3 stars |
Round-trip from | $1,151 (WhyPayMore) |
One-way from | $571 (Kiwi.com) |
Cheapflights Fare Finder
Customize your flight search to find flights from Seoul to St. Louis 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 23, 2026.
Use the filters below to find and compare flights from Seoul to St. Louis that are best for you.
Fly from
Fly to
Route
Depart
Return
Cheapest round-trip
IncheonSt. Louis
ICN Incheon Intl - STL Lambert-St Louis
ICNSTL
Incheon Intl
Fri 10/16
7:15 pm-6:57 pm
2 stops37h 42m
Lambert-St Louis
Wed 12/31
12:00 am-3:00 pm
Nonstop0h 00m
$582
IncheonSt. Louis
ICN Incheon Intl - STL Lambert-St Louis
ICNSTL
Incheon Intl
Sun 10/18
7:15 pm-7:15 pm
2 stops38h 00m
Lambert-St Louis
Wed 12/31
12:00 am-3:00 pm
Nonstop0h 00m
$635
IncheonSt. Louis
ICN Incheon Intl - STL Lambert-St Louis
ICNSTL
Incheon Intl
Thu 10/15
5:45 pm-12:35 pm
3 stops32h 50m
Lambert-St Louis
Wed 12/31
12:00 am-3:00 pm
Nonstop0h 00m
$653
IncheonSt. Louis
ICN Incheon Intl - STL Lambert-St Louis
ICNSTL
Incheon Intl
Sat 10/17
6:00 pm-11:13 pm
3 stops43h 13m
Lambert-St Louis
Wed 12/31
12:00 am-3:00 pm
Nonstop0h 00m
$720
IncheonSt. Louis
ICN Incheon Intl - STL Lambert-St Louis
ICNSTL
Incheon Intl
Thu 10/15
7:05 pm-8:20 pm
1 stop39h 15m
Lambert-St Louis
Wed 12/31
12:00 am-3:00 pm
Nonstop0h 00m
$829
IncheonSt. Louis
ICN Incheon Intl - STL Lambert-St Louis
ICNSTL
Incheon Intl
Thu 12/31
8:40 pm-10:46 am
3 stops29h 06m
Lambert-St Louis
Wed 12/31
12:00 am-3:00 pm
Nonstop0h 00m
$938
IncheonSt. Louis
ICN Incheon Intl - STL Lambert-St Louis
ICNSTL
Incheon Intl
Sun 10/18
11:30 am-6:43 pm
1 stop21h 13m
Lambert-St Louis
Wed 12/31
12:00 am-3:00 pm
Nonstop0h 00m
$1,120
IncheonSt. Louis
ICN Incheon Intl - STL Lambert-St Louis
ICNSTL
Incheon Intl
Fri 11/6
6:50 pm-11:59 pm
2 stops20h 09m
Lambert-St Louis
Fri 11/13
5:00 am-4:45 pm
1 stop20h 45m
$1,167
IncheonSt. Louis
ICN Incheon Intl - STL Lambert-St Louis
ICNSTL
Incheon Intl
Tue 12/22
8:10 pm-3:26 pm
1 stop34h 16m
Lambert-St Louis
Tue 1/12
4:05 pm-5:10 pm
2 stops34h 05m
$1,171
IncheonSt. Louis
ICN Incheon Intl - STL Lambert-St Louis
ICNSTL
Incheon Intl
Thu 1/7
6:50 pm-8:51 am
1 stop29h 01m
Lambert-St Louis
Wed 12/31
12:00 am-3:00 pm
Nonstop0h 00m
$1,236
Showing 1-10 of 16 resultsSorted by cheapest first
- Most accurate provider: When it comes to deals on Seoul-St. Louis flights, users find the pricing of FlightHub to be most consistent on Cheapflights vs. FlightHub Users can find the same prices on Seoul-St. Louis flight deals on Cheapflights vs. FlightHub >95% of the time. Price accuracy is based on data collected from Seoul-St. Louis flight searches over the past month and is updated monthly.
- Most trusted provider: When it comes to deals on Seoul-St. Louis 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 Seoul-St. Louis 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 Seoul to St. Louis
Have a flexible travel schedule? Discover the best time to fly to St. Louis from Seoul with our price prediction graph.
SEL-STL
ICN-STL
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 Seoul to St. Louis
SEL-STL
ICN-STL
No data available for this route at this time. Please check back soon.
Related info for your journey
Find useful and relevant information for your journey from Seoul to St. Louis. 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 St. Louis?
Book flights to St. Louis if you plan to visit one of these locationsFairview Heights
O'Fallon
Fenton
Swansea
Eureka
Wentzville
Maryland Heights
Collinsville
Edwardsville
Glencoe
Chesterfield
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