$498+ Cheap flights from St. Louis (STL) to Seoul (SEL)
This is the cheapest one-way flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 4/7. Fares are subject to change and may not be available on all flights or dates of travel.
STL — SEL
Apr 27 — May 41
Round-trip
1 adult, Economy
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Find cheap flights from St. Louis to Seoul with Cheapflights
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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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Cheapest flights from St. Louis to SeoulExplore the most affordable flight options available from St. Louis to Seoul. Find the lowest fares from popular airlines and budget airlines, with prices last updated on March 28, 2026.
Explore the most affordable flight options available from St. Louis to Seoul. Find the lowest fares from popular airlines and budget airlines, with prices last updated on March 28, 2026.
This United Airlines deal was found by Cheapflights users on 3/27. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 4/207:05 pm
STL
- ICN
1 stop19h 15m
United Airlines
Mon 5/44:50 pm
ICN
- STL
1 stop26h 57m
United Airlines
Deal found 3/27![United Airlines logo]()
$966
This United Airlines deal was found by Cheapflights users on 3/27. 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.
Fri 10/165:20 am
STL
- ICN
2 stops19h 40m
United Airlines
Sun 10/255:30 pm
ICN
- STL
2 stops21h 04m
United Airlines
Deal found 3/27![United Airlines logo]()
$971
This Air Canada deal was found by Cheapflights users on 3/24. 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.
Tue 11/104:15 pm
STL
- ICN
2 stops33h 55m
Air Canada
Tue 11/246:55 pm
ICN
- STL
2 stops35h 35m
Air Canada
Deal found 3/24![Air Canada logo]()
$984
This KAYAK deal was found by Cheapflights users on 3/27. 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.
Mon 4/204:49 pm
STL
- ICN
2 stops21h 31m
Asiana Airlines
Mon 5/44:50 pm
ICN
- STL
2 stops30h 40m
Asiana Airlines
Deal found 3/27![Asiana Airlines logo]()
$991
This Air Canada deal was found by Cheapflights users on 3/27. 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 9/178:55 am
STL
- ICN
1 stop18h 35m
Air Canada
Fri 9/257:05 pm
ICN
- STL
1 stop32h 55m
Air Canada
Deal found 3/27![Air Canada logo]()
$1,021
This Justfly.com deal was found by Cheapflights users on 3/26. 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 Justfly.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 10/2412:10 pm
STL
- ICN
2 stops62h 00m
Air Canada
Sat 10/315:55 pm
ICN
- STL
2 stops36h 35m
Air Canada
Deal found 3/26![Air Canada logo]()
$1,026
This Air Canada deal was found by Cheapflights users on 3/27. 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 10/294:15 pm
STL
- ICN
2 stops33h 55m
Air Canada
Sat 11/76:55 pm
ICN
- STL
2 stops35h 35m
Air Canada
Deal found 3/27![Air Canada logo]()
$1,059
This Alaska Airlines deal was found by Cheapflights users on 3/24. 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 Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 10/296:41 am
STL
- ICN
1 stop20h 54m
Alaska Airlines
Sat 11/78:00 pm
ICN
- STL
1 stop18h 59m
Alaska Airlines
Deal found 3/24![Alaska Airlines logo]()
$1,066
This United Airlines deal was found by Cheapflights users on 3/27. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 10/246:01 am
STL
- ICN
1 stop19h 24m
United Airlines
Fri 10/305:30 pm
ICN
- STL
1 stop19h 55m
United Airlines
Deal found 3/27![United Airlines logo]()
$1,067
This Delta deal was found by Cheapflights users on 3/26. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 4/156:19 am
STL
- ICN
2 stops20h 31m
Delta
Wed 4/227:20 pm
ICN
- STL
1 stop19h 05m
Delta
Deal found 3/26![Delta logo]()
$1,071
This oojo deal was found by Cheapflights users on 3/26. 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 oojo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 10/76:30 am
STL
- GMP
2 stops24h 45m
Japan Airlines
Wed 10/148:00 am
GMP
- STL
2 stops29h 05m
Japan Airlines
Deal found 3/26![Japan Airlines logo]()
$1,165
This Japan Airlines deal was found by Cheapflights users on 3/26. 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 Japan Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 10/196:30 am
STL
- GMP
2 stops45h 25m
Japan Airlines
Thu 10/228:00 am
GMP
- STL
2 stops22h 15m
Japan Airlines
Deal found 3/26![Japan Airlines logo]()
$1,261
Best flights from St. Louis to SeoulDiscover carefully curated flight deals from St. Louis to Seoul that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated March 28, 2026.
Discover carefully curated flight deals from St. Louis to Seoul that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated March 28, 2026.
This American Airlines deal was found by Cheapflights users on 3/23. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 4/256:11 pm
STL
- ICN
1 stop31h 34m
American Airlines
Wed 5/65:50 pm
ICN
- STL
1 stop19h 09m
American Airlines
Deal found 3/23![American Airlines logo]()
$1,073
This United Airlines deal was found by Cheapflights users on 3/27. 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 4/162:40 pm
STL
- ICN
2 stops23h 40m
United Airlines
Wed 4/224:50 pm
ICN
- STL
2 stops29h 35m
United Airlines
Deal found 3/27![United Airlines logo]()
$1,090
This Air Canada deal was found by Cheapflights users on 3/23. 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 Air Canada is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 5/111:05 pm
STL
- ICN
2 stops37h 00m
Air Canada
Tue 6/236:00 pm
ICN
- STL
2 stops32h 21m
Air Canada
Deal found 3/23![Air Canada logo]()
$1,162
This Delta deal was found by Cheapflights users on 3/28. 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 4/169:26 am
STL
- ICN
1 stop17h 54m
Delta
Wed 4/227:20 pm
ICN
- STL
1 stop19h 05m
Delta
Deal found 3/28![Delta logo]()
$1,166
This FlightHub deal was found by Cheapflights users on 3/25. 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 FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 8/177:56 pm
STL
- GMP
2 stops33h 19m
Multiple Airlines
Sat 8/221:50 pm
GMP
- STL
2 stops48h 09m
Multiple Airlines
Deal found 3/25![Multiple Airlines logo]()
$1,378
This KAYAK deal was found by Cheapflights users on 3/26. 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 KAYAK is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 4/186:21 am
STL
- GMP
2 stops38h 19m
Japan Airlines
Sun 4/267:15 pm
GMP
- STL
2 stops32h 48m
Japan Airlines
Deal found 3/26![Japan Airlines logo]()
$1,421
This United Airlines deal was found by Cheapflights users on 3/27. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 4/158:54 am
STL
- ICN
2 stops29h 26m
United Airlines
Wed 4/224:50 pm
ICN
- STL
2 stops29h 35m
United Airlines
Deal found 3/27![United Airlines logo]()
$1,090
This Delta deal was found by Cheapflights users on 3/24. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 4/157:00 am
STL
- ICN
2 stops19h 50m
Delta
Wed 4/227:20 pm
ICN
- STL
1 stop19h 05m
Delta
Deal found 3/24![Delta logo]()
$1,171
This United Airlines deal was found by Cheapflights users on 3/23. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 8/174:40 pm
STL
- ICN
2 stops21h 40m
United Airlines
Fri 8/214:50 pm
ICN
- STL
2 stops31h 19m
United Airlines
Deal found 3/23![United Airlines logo]()
$1,171
This Delta deal was found by Cheapflights users on 3/25. 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.
Thu 9/177:30 am
STL
- ICN
2 stops19h 20m
Delta
Fri 9/2510:15 am
ICN
- STL
2 stops19h 42m
Delta
Deal found 3/25![Delta logo]()
$1,171
This KAYAK deal was found by Cheapflights users on 3/24. 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 KAYAK is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 4/167:05 am
STL
- GMP
2 stops24h 10m
Japan Airlines
Wed 4/227:15 pm
GMP
- STL
2 stops32h 48m
Japan Airlines
Deal found 3/24![Japan Airlines logo]()
$1,509
This FlightHub deal was found by Cheapflights users on 3/27. 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 4/267:00 am
STL
- GMP
2 stops45h 10m
Multiple Airlines
Sat 5/21:50 pm
GMP
- STL
2 stops48h 09m
Multiple Airlines
Deal found 3/27![Multiple Airlines logo]()
$1,617
This FlightHub deal was found by Cheapflights users on 3/24. 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 FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 4/157:05 am
STL
- GMP
2 stops24h 10m
Japan Airlines
Wed 4/228:00 am
GMP
- STL
2 stops20h 03m
Japan Airlines
Deal found 3/24![Japan Airlines logo]()
$1,557
This Japan Airlines deal was found by Cheapflights users on 3/24. 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 Japan Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 7/269:08 am
STL
- GMP
2 stops22h 07m
Multiple Airlines
Wed 8/128:00 am
GMP
- STL
2 stops21h 48m
Multiple Airlines
Deal found 3/24![Multiple Airlines logo]()
$1,639
This Jetabroad deal was found by Cheapflights users on 3/24. 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 Jetabroad is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 4/227:05 am
STL
- GMP
2 stops24h 10m
Japan Airlines
Wed 4/2912:05 pm
GMP
- STL
2 stops25h 52m
Japan Airlines
Deal found 3/24![Japan Airlines logo]()
$1,574
This KAYAK deal was found by Cheapflights users on 3/27. 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.
Wed 7/299:08 am
STL
- GMP
2 stops22h 07m
Japan Airlines
Wed 8/128:00 am
GMP
- STL
2 stops21h 48m
Japan Airlines
Deal found 3/27![Japan Airlines logo]()
$1,627
Last-minute flights from St. Louis to SeoulDiscover last-minute flight deals from St. Louis to Seoul. Data last updated March 28, 2026 and is based on user searches.
Discover last-minute flight deals from St. Louis to Seoul. Data last updated March 28, 2026 and is based on user searches.
This Delta deal was found by Cheapflights users on 3/26. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 4/156:48 am
STL
- ICN
1 stop19h 37m
Delta
Wed 4/227:20 pm
ICN
- STL
1 stop19h 05m
Delta
Deal found 3/26![Delta logo]()
$1,066
This United Airlines deal was found by Cheapflights users on 3/27. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 4/158:30 am
STL
- ICN
1 stop40h 30m
United Airlines
Wed 4/2211:30 am
ICN
- STL
2 stops23h 24m
United Airlines
Deal found 3/27![United Airlines logo]()
$1,097
This FlightHub deal was found by Cheapflights users on 3/25. 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 FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 4/158:54 am
STL
- GMP
2 stops22h 21m
Japan Airlines
Wed 4/228:00 am
GMP
- STL
2 stops20h 03m
Japan Airlines
Deal found 3/25![Japan Airlines logo]()
$1,557
This United Airlines deal was found by Cheapflights users on 3/27. 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 4/162:40 pm
STL
- ICN
2 stops23h 40m
United Airlines
Wed 4/224:50 pm
ICN
- STL
2 stops29h 35m
United Airlines
Deal found 3/27![United Airlines logo]()
$1,090
This FlightHub deal was found by Cheapflights users on 3/24. 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 FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 4/167:00 am
STL
- ICN
1 stop21h 35m
Multiple Airlines
Wed 4/227:35 pm
ICN
- STL
1 stop18h 24m
Multiple Airlines
Deal found 3/24![Multiple Airlines logo]()
$1,110
This KAYAK deal was found by Cheapflights users on 3/25. 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 KAYAK is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 4/168:54 am
STL
- GMP
2 stops35h 46m
Japan Airlines
Wed 4/227:15 pm
GMP
- STL
2 stops32h 48m
Japan Airlines
Deal found 3/25![Japan Airlines logo]()
$1,509
This KAYAK deal was found by Cheapflights users on 3/26. 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 KAYAK is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 4/186:21 am
STL
- GMP
2 stops38h 19m
Japan Airlines
Sun 4/267:15 pm
GMP
- STL
2 stops32h 48m
Japan Airlines
Deal found 3/26![Japan Airlines logo]()
$1,421
This United Airlines deal was found by Cheapflights users on 3/27. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 4/207:05 pm
STL
- ICN
1 stop19h 15m
United Airlines
Mon 5/44:50 pm
ICN
- STL
1 stop26h 57m
United Airlines
Deal found 3/27![United Airlines logo]()
$966
This KAYAK deal was found by Cheapflights users on 3/27. 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.
Mon 4/204:49 pm
STL
- ICN
2 stops21h 31m
Asiana Airlines
Mon 5/44:50 pm
ICN
- STL
2 stops30h 40m
Asiana Airlines
Deal found 3/27![Asiana Airlines logo]()
$991
This American Airlines deal was found by Cheapflights users on 3/24. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 4/256:11 pm
STL
- ICN
1 stop31h 34m
American Airlines
Wed 5/65:50 pm
ICN
- STL
1 stop19h 09m
American Airlines
Deal found 3/24![American Airlines logo]()
$1,073
This Air Canada deal was found by Cheapflights users on 3/27. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Air Canada is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 4/254:05 pm
STL
- ICN
2 stops34h 00m
Air Canada
Wed 5/65:45 pm
ICN
- STL
2 stops32h 21m
Air Canada
Deal found 3/27![Air Canada logo]()
$1,124
This Air Canada deal was found by Cheapflights users on 3/28. 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 4/264:05 pm
STL
- ICN
2 stops34h 00m
Air Canada
Sat 5/25:45 pm
ICN
- STL
2 stops32h 21m
Air Canada
Deal found 3/28![Air Canada logo]()
$1,105
One-way flights from St. Louis to SeoulSearch for one-way flight options from St. Louis to Seoul. Find affordable one-way fares based on user searches. Data last updated March 28, 2026.
Search for one-way flight options from St. Louis to Seoul. Find affordable one-way fares based on user searches. Data last updated March 28, 2026.
This United Airlines deal was found by Cheapflights users on 3/27. 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 4/74:30 pm
STL
- ICN
2 stops32h 30m
United Airlines
Deal found 3/27![United Airlines logo]()
$498
This Delta deal was found by Cheapflights users on 3/26. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 4/76:32 am
STL
- ICN
1 stop19h 53m
Delta
Deal found 3/26![Delta logo]()
$518
This Kiwi.com deal was found by Cheapflights users on 3/24. 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.
Sat 8/13:33 pm
STL
- ICN
3 stops53h 52m
Multiple Airlines
Deal found 3/24![Multiple Airlines logo]()
$524
This Expedia deal was found by Cheapflights users on 3/24. 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 Expedia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 8/1012:10 pm
STL
- ICN
1 stop38h 15m
Air Canada
Deal found 3/24![Air Canada logo]()
$544
This Kiwi.com deal was found by Cheapflights users on 3/24. 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 8/38:08 pm
STL
- ICN
3 stops49h 17m
Multiple Airlines
Deal found 3/24![Multiple Airlines logo]()
$546
This Air Canada deal was found by Cheapflights users on 3/28. 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 4/74:05 pm
STL
- ICN
1 stop35h 25m
Air Canada
Deal found 3/28![Air Canada logo]()
$548
This Kiwi.com deal was found by Cheapflights users on 3/24. 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.
Fri 8/78:08 pm
STL
- ICN
3 stops49h 17m
Multiple Airlines
Deal found 3/24![Multiple Airlines logo]()
$577
This United Airlines deal was found by Cheapflights users on 3/26. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 5/207:09 pm
STL
- ICN
2 stops29h 51m
United Airlines
Deal found 3/26![United Airlines logo]()
$578
This Kiwi.com deal was found by Cheapflights users on 3/24. 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.
Wed 8/53:33 pm
STL
- ICN
3 stops53h 52m
Multiple Airlines
Deal found 3/24![Multiple Airlines logo]()
$593
This Kiwi.com deal was found by Cheapflights users on 3/24. 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.
Tue 5/126:33 pm
STL
- ICN
2 stops33h 22m
Multiple Airlines
Deal found 3/24![Multiple Airlines logo]()
$595
This Expedia deal was found by Cheapflights users on 3/24. 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 Expedia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 8/108:35 am
STL
- GMP
2 stops22h 40m
Japan Airlines
Deal found 3/24![Japan Airlines logo]()
$666
This Japan Airlines deal was found by Cheapflights users on 3/24. 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 Japan Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 8/36:36 am
STL
- GMP
2 stops24h 39m
Japan Airlines
Deal found 3/24![Japan Airlines logo]()
$674
Find flight deals from St. Louis to Seoul
Discover tips and strategies to find the most affordable flight options for your journey from St. Louis (STL) 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 March 28, 2026.
Most accurate provider | FlightHub 3 stars |
|---|---|
Most trusted provider | FlightHub 3 stars |
Round-trip from | $966 (United Airlines) |
One-way from | $498 (United Airlines) |
Popular in | July |
Cheapest in | February |
Average price | $991 |
Cheapflights Fare Finder
Customize your flight search to find flights from St. Louis 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 2,558,603 searches. Data last updated March 28, 2026.
Use the filters below to find and compare flights from St. Louis to Seoul that are best for you.
Fly from
Fly to
Route
Depart
Return
Cheapest round-trip
St. LouisIncheon
STL - ICN
STLICN
Lambert-St Louis
Sat 4/25
6:11 pm-3:45 pm
1 stop31h 34m
Incheon Intl
Wed 5/6
5:50 pm-10:59 pm
1 stop19h 09m
$1,073
St. LouisIncheon
STL - ICN
STLICN
Lambert-St Louis
Thu 4/16
2:40 pm-4:20 am
2 stops23h 40m
Incheon Intl
Wed 4/22
4:50 pm-8:25 am
2 stops29h 35m
$1,090
St. LouisIncheon
STL - ICN
STLICN
Lambert-St Louis
Wed 4/15
8:54 am-4:20 am
2 stops29h 26m
Incheon Intl
Wed 4/22
4:50 pm-8:25 am
2 stops29h 35m
$1,090
St. LouisIncheon
STL - ICN
STLICN
Lambert-St Louis
Mon 5/11
1:05 pm-4:05 pm
2 stops37h 00m
Incheon Intl
Tue 6/23
6:00 pm-12:21 pm
2 stops32h 21m
$1,162
Quickest round-trip
St. LouisIncheon
STL - ICN
STLICN
Lambert-St Louis
Thu 4/16
9:26 am-5:20 pm
1 stop17h 54m
Incheon Intl
Wed 4/22
7:20 pm-12:25 am
1 stop19h 05m
$1,166
St. LouisIncheon
STL - ICN
STLICN
Lambert-St Louis
Wed 4/15
7:00 am-4:50 pm
2 stops19h 50m
Incheon Intl
Wed 4/22
7:20 pm-12:25 am
1 stop19h 05m
$1,171
St. LouisIncheon
STL - ICN
STLICN
Lambert-St Louis
Mon 8/17
4:40 pm-4:20 am
2 stops21h 40m
Incheon Intl
Fri 8/21
4:50 pm-10:09 am
2 stops31h 19m
$1,171
St. LouisIncheon
STL - ICN
STLICN
Lambert-St Louis
Thu 9/17
7:30 am-4:50 pm
2 stops19h 20m
Incheon Intl
Fri 9/25
10:15 am-3:57 pm
2 stops19h 42m
$1,171
St. LouisSeoul
STL - GMP
STLGMP
Lambert-St Louis
Mon 8/17
7:56 pm-7:15 pm
2 stops33h 19m
Seoul Gimpo Intl
Sat 8/22
1:50 pm-11:59 pm
2 stops48h 09m
$1,378
St. LouisSeoul
STL - GMP
STLGMP
Lambert-St Louis
Sat 4/18
6:21 am-10:40 am
2 stops38h 19m
Seoul Gimpo Intl
Sun 4/26
7:15 pm-2:03 pm
2 stops32h 48m
$1,421
Showing 1-10 of 34 resultsSorted by cheapest first
Compare providers for flights from St. Louis 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 St. Louis to Seoul in March.
| Provider | Price Accuracy | Trust Score* |
|---|---|---|
| Price Accuracy1 star | Trust Score*3 stars | |
| Price Accuracy3 stars | Trust Score*3 stars | |
| Price Accuracy2 stars | Trust Score*2 stars |
- Most accurate provider: When it comes to deals on St. Louis-Seoul flights, users find the pricing of FlightHub to be most consistent on Cheapflights vs. FlightHub Users can find the same prices on St. Louis-Seoul flight deals on Cheapflights vs. FlightHub >95% of the time. Price accuracy is based on data collected from St. Louis-Seoul flight searches over the past month and is updated monthly.
- Most trusted provider: When it comes to deals on St. Louis-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 St. Louis-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 St. Louis to Seoul
Have a flexible travel schedule? Discover the best time to fly to Seoul from St. Louis with our price prediction graph.
STL-SEL
STL-ICN
STL-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 St. Louis to Seoul
STL-SEL
STL-ICN
STL-GMP
What is the cheapest month to book a flight from St. Louis to Seoul?
Currently, April is the cheapest month in which you can book a flight from St. Louis to Seoul (average of $679). Flying from St. Louis to Seoul in July is currently the most expensive (average of $1,272). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.
How much does it cost to fly round-trip from St. Louis to Seoul?
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 March 28, 2026.
Read reviews from past customers who have flown Delta,United Airlines, andAmerican Airlines from St. Louis to Seoul. Users can see the overall rating for each airline as well as how each is rated in terms of entertainment options, comfort, food, crew/service, and boarding process.
Comfort
7.9
Crew
8.5
Entertainment
7.8
Overall
7.9
Food
7.2
Boarding
8.1
Reviews
1 / 20
6.0
GoodJim,Nov 2025
AVL - ATL
Comfort
7.9
Crew
8.5
Entertainment
7.8
Overall
7.9
Food
7.2
Boarding
8.1
Reviews
1 / 20
6.0
GoodJim,Nov 2025
AVL - ATL
Comfort
7.9
Crew
8.5
Entertainment
7.8
Overall
7.9
Food
7.2
Boarding
8.1
Reviews
1 / 20
6.0
GoodJim,Nov 2025
AVL - ATL
Comfort
7.9
Crew
8.5
Entertainment
7.8
Overall
7.9
Food
7.2
Boarding
8.1
Reviews
1 / 20
6.0
GoodJim,Nov 2025
AVL - ATL
Comfort
7.9
Crew
8.5
Entertainment
7.8
Overall
7.9
Food
7.2
Boarding
8.1
Reviews
1 / 20
6.0
GoodJim,Nov 2025
AVL - ATL
Related info for your journey
Find useful and relevant information for your journey from St. Louis 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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St. Louis and Seoul flights
Browse other St. Louis and Seoul flight options. Last updated on March 28, 2026.
Other flights from St. Louis
Browse through other flights departing from St. Louis. Flights are based on user searches made on Cheapflights and were last updated on March 28, 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 March 28, 2026.
Top 4 airlines flying from St. Louis to Seoul
Discover the top 4 airlines that operate flights from St. Louis 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 2,558,603 searches. Data last updated March 28, 2026.
| Airline | Cheapest | Average | Flexibility | On-time |
|---|---|---|---|---|
| Cheapest$846 | Average$1,846 | FlexibilityNo cancel fee | On-time71% | |
| Cheapest$846 | Average$1,055 | FlexibilityNo cancel fee | On-timeN/A | |
| Cheapest$865 | Average$1,246 | FlexibilityNo cancel fee | On-time69% | |
| Cheapest$1,083 | Average$1,571 | FlexibilityNo cancel fee | On-time67% |