$483+ Cheap flights from St. Louis (STL) to South Korea
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 8/30. Fares are subject to change and may not be available on all flights or dates of travel.
STL — ICN
Aug 12 — Aug 191
Round-trip
1 adult, Economy
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Find cheap flights from St. Louis to South Korea 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
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Cheapest flights from St. Louis to South KoreaExplore the most affordable flight options available from St. Louis to South Korea. Find the lowest fares from popular airlines and budget airlines, with prices last updated on July 13, 2026.
Explore the most affordable flight options available from St. Louis to South Korea. Find the lowest fares from popular airlines and budget airlines, with prices last updated on July 13, 2026.
This United Airlines deal was found by Cheapflights users on 7/11. 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 9/15:30 pm
STL
- ICN
2 stops20h 50m
United Airlines
Tue 9/155:15 pm
ICN
- STL
1 stop20h 23m
United Airlines
Deal found 7/11![United Airlines logo]()
$826
This United Airlines deal was found by Cheapflights users on 7/10. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 10/266:00 am
STL
- ICN
1 stop19h 25m
United Airlines
Wed 11/2512:45 pm
ICN
- STL
1 stop24h 25m
United Airlines
Deal found 7/10![United Airlines logo]()
$966
This United Airlines deal was found by Cheapflights users on 7/9. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 9/28:42 am
STL
- ICN
1 stop29h 38m
United Airlines
Tue 10/275:30 pm
ICN
- STL
1 stop18h 21m
United Airlines
Deal found 7/9![United Airlines logo]()
$971
This United Airlines deal was found by Cheapflights users on 7/12. 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 10/59:30 am
STL
- ICN
1 stop39h 50m
United Airlines
Wed 11/46:00 pm
ICN
- STL
1 stop19h 10m
United Airlines
Deal found 7/12![United Airlines logo]()
$973
This United Airlines deal was found by Cheapflights users on 7/9. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 9/612:30 pm
STL
- ICN
1 stop36h 50m
United Airlines
Tue 10/2711:45 am
ICN
- STL
2 stops18h 58m
United Airlines
Deal found 7/9![United Airlines logo]()
$976
This United Airlines deal was found by Cheapflights users on 7/9. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 9/164:40 pm
STL
- ICN
2 stops21h 40m
United Airlines
Fri 9/2511:30 am
ICN
- STL
2 stops23h 51m
United Airlines
Deal found 7/9![United Airlines logo]()
$1,021
This United Airlines deal was found by Cheapflights users on 7/9. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 9/44:50 pm
STL
- ICN
1 stop32h 30m
United Airlines
Mon 11/26:30 pm
ICN
- STL
1 stop18h 21m
United Airlines
Deal found 7/9![United Airlines logo]()
$1,023
This KAYAK deal was found by Cheapflights users on 7/9. 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 KAYAK is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 9/168:35 am
STL
- ICN
1 stop29h 45m
Asiana Airlines
Fri 9/2511:30 am
ICN
- STL
1 stop21h 13m
Asiana Airlines
Deal found 7/9![Asiana Airlines logo]()
$1,071
This Booking.com deal was found by Cheapflights users on 7/11. 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 Booking.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 9/13:04 pm
STL
- ICN
1 stop36h 26m
Alaska Airlines
Wed 9/307:35 pm
ICN
- STL
1 stop32h 46m
Alaska Airlines
Deal found 7/11![Alaska Airlines logo]()
$1,097
This Air Canada deal was found by Cheapflights users on 7/12. 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 8/118:55 am
STL
- GMP
2 stops23h 30m
Multiple Airlines
Tue 8/189:00 am
GMP
- STL
2 stops25h 24m
Multiple Airlines
Deal found 7/12![Multiple Airlines logo]()
$1,306
This Orbitz deal was found by Cheapflights users on 7/9. 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 Orbitz is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 8/208:55 am
STL
- GMP
2 stops23h 30m
Multiple Airlines
Thu 9/107:40 am
GMP
- STL
2 stops26h 40m
Multiple Airlines
Deal found 7/9![Multiple Airlines logo]()
$1,320
This Expedia deal was found by Cheapflights users on 7/8. 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 Expedia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 8/186:00 am
STL
- GMP
2 stops25h 15m
Japan Airlines
Tue 8/258:00 am
GMP
- STL
2 stops28h 59m
Japan Airlines
Deal found 7/8![Japan Airlines logo]()
$1,332
Best flights from St. Louis to South KoreaDiscover carefully curated flight deals from St. Louis to South Korea that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated July 13, 2026.
Discover carefully curated flight deals from St. Louis to South Korea that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated July 13, 2026.
This United Airlines deal was found by Cheapflights users on 7/10. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 10/55:36 pm
STL
- ICN
2 stops31h 44m
United Airlines
Wed 11/412:45 pm
ICN
- STL
2 stops18h 58m
United Airlines
Deal found 7/10![United Airlines logo]()
$971
This Delta deal was found by Cheapflights users on 7/8. 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 10/56:40 am
STL
- ICN
1 stop19h 45m
Delta
Wed 11/46:35 pm
ICN
- STL
1 stop20h 59m
Delta
Deal found 7/8![Delta logo]()
$1,106
This Alaska Airlines deal was found by Cheapflights users on 7/12. 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.
Sun 9/133:19 pm
STL
- ICN
1 stop36h 11m
Alaska Airlines
Thu 9/177:35 pm
ICN
- STL
1 stop18h 24m
Alaska Airlines
Deal found 7/12![Alaska Airlines logo]()
$1,203
This Air Canada deal was found by Cheapflights users on 7/13. 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 1/64:05 pm
STL
- ICN
1 stop35h 20m
Air Canada
Sat 1/238:10 pm
ICN
- STL
1 stop34h 16m
Air Canada
Deal found 7/13![Air Canada logo]()
$1,310
This Orbitz deal was found by Cheapflights users on 7/11. 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 Orbitz is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 9/16:00 am
STL
- GMP
2 stops25h 15m
Japan Airlines
Tue 9/1512:05 pm
GMP
- STL
2 stops25h 25m
Japan Airlines
Deal found 7/11![Japan Airlines logo]()
$1,332
This Cathay Pacific deal was found by Cheapflights users on 7/10. 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 Cathay Pacific is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 11/216:13 pm
STL
- ICN
2 stops33h 22m
Multiple Airlines
Sat 11/281:45 pm
ICN
- STL
2 stops41h 58m
Multiple Airlines
Deal found 7/10![Multiple Airlines logo]()
$1,397
This Korean Air deal was found by Cheapflights users on 7/8. 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 Korean Air is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 9/106:40 am
STL
- TAE
2 stops23h 15m
Korean Air
Mon 9/147:55 am
TAE
- STL
2 stops26h 03m
Korean Air
Deal found 7/8![Korean Air logo]()
$1,765
This Delta deal was found by Cheapflights users on 7/9. 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 10/266:00 am
STL
- ICN
1 stop19h 30m
Delta
Wed 11/256:00 pm
ICN
- STL
1 stop17h 49m
Delta
Deal found 7/9![Delta logo]()
$1,106
This Expedia deal was found by Cheapflights users on 7/8. 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 Expedia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 8/186:00 am
STL
- GMP
2 stops25h 15m
Japan Airlines
Tue 8/258:00 am
GMP
- STL
2 stops28h 59m
Japan Airlines
Deal found 7/8![Japan Airlines logo]()
$1,332
This Air Canada deal was found by Cheapflights users on 7/10. 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 Air Canada is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 9/58:55 am
STL
- GMP
2 stops22h 20m
Multiple Airlines
Fri 9/118:10 am
GMP
- STL
2 stops26h 10m
Multiple Airlines
Deal found 7/10![Multiple Airlines logo]()
$1,400
This Delta deal was found by Cheapflights users on 7/9. 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.
Sun 7/266:00 am
STL
- ICN
2 stops20h 25m
Delta
Wed 8/126:50 pm
ICN
- STL
1 stop18h 31m
Delta
Deal found 7/9![Delta logo]()
$1,313
This Japan Airlines deal was found by Cheapflights users on 7/9. 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 Japan Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 9/66:35 am
STL
- GMP
2 stops38h 05m
Japan Airlines
Tue 10/2712:05 pm
GMP
- STL
2 stops25h 54m
Japan Airlines
Deal found 7/9![Japan Airlines logo]()
$1,402
This Delta deal was found by Cheapflights users on 7/10. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 7/306:30 am
STL
- ICN
1 stop19h 55m
Delta
Thu 8/207:20 pm
ICN
- STL
1 stop19h 21m
Delta
Deal found 7/10![Delta logo]()
$1,387
This Korean Air deal was found by Cheapflights users on 7/9. 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 Korean Air is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 9/106:40 am
STL
- PUS
2 stops22h 55m
Korean Air
Mon 9/144:30 pm
PUS
- STL
2 stops20h 46m
Korean Air
Deal found 7/9![Korean Air logo]()
$1,767
This Japan Airlines deal was found by Cheapflights users on 7/9. 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 Japan Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 9/26:35 am
STL
- GMP
2 stops38h 05m
Japan Airlines
Thu 10/2912:05 pm
GMP
- STL
2 stops25h 54m
Japan Airlines
Deal found 7/9![Japan Airlines logo]()
$1,464
This Delta deal was found by Cheapflights users on 7/13. 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 8/113:39 pm
STL
- ICN
1 stop22h 21m
Delta
Sun 8/237:20 pm
ICN
- STL
1 stop19h 21m
Delta
Deal found 7/13![Delta logo]()
$1,387
This American Airlines deal was found by Cheapflights users on 7/8. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 7/297:07 am
STL
- GMP
2 stops20h 48m
Multiple Airlines
Thu 8/208:00 am
GMP
- STL
2 stops24h 05m
Multiple Airlines
Deal found 7/8![Multiple Airlines logo]()
$1,687
This KAYAK deal was found by Cheapflights users on 7/10. 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 KAYAK is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 7/296:37 am
STL
- GMP
2 stops24h 38m
Japan Airlines
Thu 8/2012:05 pm
GMP
- STL
2 stops24h 54m
Japan Airlines
Deal found 7/10![Japan Airlines logo]()
$1,512
This American Airlines deal was found by Cheapflights users on 7/10. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 7/287:07 am
STL
- GMP
2 stops24h 08m
Multiple Airlines
Thu 8/208:00 am
GMP
- STL
2 stops24h 05m
Multiple Airlines
Deal found 7/10![Multiple Airlines logo]()
$1,687
This Japan Airlines deal was found by Cheapflights users on 7/9. 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 Japan Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 9/66:35 am
STL
- GMP
2 stops38h 05m
Japan Airlines
Mon 11/212:05 pm
GMP
- STL
2 stops26h 51m
Japan Airlines
Deal found 7/9![Japan Airlines logo]()
$1,571
This Japan Airlines deal was found by Cheapflights users on 7/10. 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 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 stops22h 24m
Multiple Airlines
Deal found 7/10![Multiple Airlines logo]()
$1,744
This KAYAK deal was found by Cheapflights users on 7/8. 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 KAYAK is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 7/257:23 pm
STL
- CJU
2 stops28h 17m
Multiple Airlines
Tue 8/1110:20 am
CJU
- STL
2 stops27h 39m
Multiple Airlines
Deal found 7/8![Multiple Airlines logo]()
$1,940
This SmartFares deal was found by Cheapflights users on 7/11. 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 8/253:30 pm
STL
- CJU
2 stops40h 05m
Multiple Airlines
Tue 9/16:25 pm
CJU
- STL
2 stops33h 00m
Multiple Airlines
Deal found 7/11![Multiple Airlines logo]()
$3,811
Last-minute flights from St. Louis to South KoreaDiscover last-minute flight deals from St. Louis to South Korea. Data last updated July 13, 2026 and is based on user searches.
Discover last-minute flight deals from St. Louis to South Korea. Data last updated July 13, 2026 and is based on user searches.
This Delta deal was found by Cheapflights users on 7/9. 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.
Sun 7/262:30 pm
STL
- ICN
1 stop34h 50m
Delta
Wed 8/126:50 pm
ICN
- STL
1 stop27h 18m
Delta
Deal found 7/9![Delta logo]()
$1,263
This Kiwi.com deal was found by Cheapflights users on 7/12. 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 8/83:41 pm
STL
- ICN
1 stop34h 59m
Multiple Airlines
Sun 8/237:15 pm
ICN
- STL
2 stops37h 58m
Multiple Airlines
Deal found 7/12![Multiple Airlines logo]()
$1,260
This Kiwi.com deal was found by Cheapflights users on 7/13. 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 8/113:41 pm
STL
- ICN
1 stop34h 59m
Multiple Airlines
Sun 8/237:15 pm
ICN
- STL
2 stops37h 58m
Multiple Airlines
Deal found 7/13![Multiple Airlines logo]()
$1,274
This Air Canada deal was found by Cheapflights users on 7/12. 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 8/118:55 am
STL
- GMP
2 stops23h 30m
Multiple Airlines
Tue 8/189:00 am
GMP
- STL
2 stops25h 24m
Multiple Airlines
Deal found 7/12![Multiple Airlines logo]()
$1,306
This Delta deal was found by Cheapflights users on 7/8. 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.
Tue 8/185:23 pm
STL
- ICN
1 stop20h 37m
Delta
Tue 8/256:50 pm
ICN
- STL
1 stop18h 31m
Delta
Deal found 7/8![Delta logo]()
$1,106
This Cathay Pacific deal was found by Cheapflights users on 7/8. 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 Cathay Pacific is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 8/186:00 am
STL
- ICN
2 stops28h 25m
Multiple Airlines
Mon 8/241:55 am
ICN
- STL
2 stops35h 04m
Multiple Airlines
Deal found 7/8![Multiple Airlines logo]()
$1,184
This Delta deal was found by Cheapflights users on 7/8. 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.
Thu 8/205:23 pm
STL
- ICN
1 stop20h 37m
Delta
Fri 8/287:20 pm
ICN
- STL
1 stop19h 21m
Delta
Deal found 7/8![Delta logo]()
$1,156
This American Airlines deal was found by Cheapflights users on 7/8. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 8/206:36 am
STL
- ICN
1 stop19h 09m
American Airlines
Fri 8/285:50 pm
ICN
- STL
2 stops20h 24m
American Airlines
Deal found 7/8![American Airlines logo]()
$1,160
This Cathay Pacific deal was found by Cheapflights users on 7/8. 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 Cathay Pacific is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 8/206:00 am
STL
- ICN
2 stops28h 25m
Multiple Airlines
Fri 8/288:00 am
ICN
- STL
2 stops29h 42m
Multiple Airlines
Deal found 7/8![Multiple Airlines logo]()
$1,234
This Ovago deal was found by Cheapflights users on 7/9. 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 Ovago is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 8/209:32 am
STL
- ICN
2 stops37h 08m
Cathay Pacific
Wed 9/91:55 am
ICN
- STL
2 stops34h 02m
Cathay Pacific
Deal found 7/9![Cathay Pacific logo]()
$1,256
This Orbitz deal was found by Cheapflights users on 7/9. 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 Orbitz is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 8/208:55 am
STL
- GMP
2 stops23h 30m
Multiple Airlines
Thu 9/107:40 am
GMP
- STL
2 stops26h 40m
Multiple Airlines
Deal found 7/9![Multiple Airlines logo]()
$1,320
This Delta deal was found by Cheapflights users on 7/11. 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 8/253:39 pm
STL
- ICN
1 stop22h 21m
Delta
Tue 9/2210:15 am
ICN
- STL
2 stops23h 43m
Delta
Deal found 7/11![Delta logo]()
$1,111
One-way flights from St. Louis to South KoreaSearch for one-way flight options from St. Louis to South Korea. Find affordable one-way fares based on user searches. Data last updated July 13, 2026.
Search for one-way flight options from St. Louis to South Korea. Find affordable one-way fares based on user searches. Data last updated July 13, 2026.
This Kiwi.com deal was found by Cheapflights users on 7/10. 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.
Sun 8/306:45 pm
STL
- ICN
2 stops36h 55m
Multiple Airlines
Deal found 7/10![Multiple Airlines logo]()
$483
This Kiwi.com deal was found by Cheapflights users on 7/12. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 9/148:10 pm
STL
- ICN
3 stops59h 30m
Multiple Airlines
Deal found 7/12![Multiple Airlines logo]()
$507
This Booking.com deal was found by Cheapflights users on 7/12. 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 Booking.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 8/246:35 am
STL
- ICN
1 stop20h 55m
Alaska Airlines
Deal found 7/12![Alaska Airlines logo]()
$578
This Delta deal was found by Cheapflights users on 7/12. 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 8/246:20 am
STL
- ICN
2 stops20h 30m
Delta
Deal found 7/12![Delta logo]()
$582
This Delta deal was found by Cheapflights users on 7/10. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 8/302:32 pm
STL
- ICN
1 stop34h 48m
Delta
Deal found 7/10![Delta logo]()
$593
This Booking.com deal was found by Cheapflights users on 7/12. 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 Booking.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 10/176:00 am
STL
- ICN
1 stop21h 30m
Alaska Airlines
Deal found 7/12![Alaska Airlines logo]()
$643
This United Airlines deal was found by Cheapflights users on 7/12. 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 10/178:00 am
STL
- ICN
2 stops30h 20m
United Airlines
Deal found 7/12![United Airlines logo]()
$647
This Trip.com deal was found by Cheapflights users on 7/12. 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 Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 8/246:00 am
STL
- GMP
2 stops25h 15m
Japan Airlines
Deal found 7/12![Japan Airlines logo]()
$680
This Japan Airlines deal was found by Cheapflights users on 7/10. 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 Japan Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 8/306:00 am
STL
- GMP
2 stops25h 15m
Multiple Airlines
Deal found 7/10![Multiple Airlines logo]()
$681
This Justfly.com deal was found by Cheapflights users on 7/12. 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.
Mon 9/147:36 pm
STL
- GMP
2 stops33h 39m
Multiple Airlines
Deal found 7/12![Multiple Airlines logo]()
$772
This United Airlines deal was found by Cheapflights users on 7/11. 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 1/11:09 pm
STL
- ICN
2 stops25h 31m
United Airlines
Deal found 7/11![United Airlines logo]()
$852
This Kiwi.com deal was found by Cheapflights users on 7/12. 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 12/267:49 pm
STL
- ICN
2 stops30h 51m
Multiple Airlines
Deal found 7/12![Multiple Airlines logo]()
$857
Find flight deals from St. Louis to South Korea
Keep the following information in mind while searching for St. Louis to South Korea flight deals. Data was last updated July 13, 2026.
Most accurate provider | FlightHub 3 stars |
|---|---|
Most trusted provider | FlightHub 3 stars |
Round-trip from | $826 (United Airlines) |
One-way from | $483 (Kiwi.com) |
Popular in | July |
Cheapest in | February |
Average price | $1,691 |
Cheapflights Fare Finder
Customize your flight search to find flights from St. Louis to South Korea 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 July 13, 2026.
Use the filters below to find and compare flights from St. Louis to South Korea that are best for you.
Fly from
Fly to
Route
Depart
Return
Cheapest round-trip
St. LouisIncheon
STL - ICN
STLICN
Lambert-St Louis
Mon 10/5
5:36 pm-3:20 pm
2 stops31h 44m
Incheon Intl
Wed 11/4
12:45 pm-4:43 pm
2 stops18h 58m
$971
St. LouisIncheon
STL - ICN
STLICN
Lambert-St Louis
Mon 10/5
6:40 am-4:25 pm
1 stop19h 45m
Incheon Intl
Wed 11/4
6:35 pm-12:34 am
1 stop20h 59m
$1,106
Quickest round-trip
St. LouisIncheon
STL - ICN
STLICN
Lambert-St Louis
Mon 10/26
6:00 am-3:30 pm
1 stop19h 30m
Incheon Intl
Wed 11/25
6:00 pm-8:49 pm
1 stop17h 49m
$1,106
St. LouisIncheon
STL - ICN
STLICN
Lambert-St Louis
Sun 9/13
3:19 pm-5:30 pm
1 stop36h 11m
Incheon Intl
Thu 9/17
7:35 pm-11:59 pm
1 stop18h 24m
$1,203
St. LouisIncheon
STL - ICN
STLICN
Lambert-St Louis
Wed 1/6
4:05 pm-6:25 pm
1 stop35h 20m
Incheon Intl
Sat 1/23
8:10 pm-3:26 pm
1 stop34h 16m
$1,310
St. LouisIncheon
STL - ICN
STLICN
Lambert-St Louis
Sun 7/26
6:00 am-4:25 pm
2 stops20h 25m
Incheon Intl
Wed 8/12
6:50 pm-11:21 pm
1 stop18h 31m
$1,313
St. LouisSeoul
STL - GMP
STLGMP
Lambert-St Louis
Tue 9/1
6:00 am-9:15 pm
2 stops25h 15m
Seoul Gimpo Intl
Tue 9/15
12:05 pm-11:30 pm
2 stops25h 25m
$1,332
St. LouisSeoul
STL - GMP
STLGMP
Lambert-St Louis
Tue 8/18
6:00 am-9:15 pm
2 stops25h 15m
Seoul Gimpo Intl
Tue 8/25
8:00 am-10:59 pm
2 stops28h 59m
$1,332
St. LouisIncheon
STL - ICN
STLICN
Lambert-St Louis
Thu 7/30
6:30 am-4:25 pm
1 stop19h 55m
Incheon Intl
Thu 8/20
7:20 pm-12:41 am
1 stop19h 21m
$1,387
St. LouisIncheon
STL - ICN
STLICN
Lambert-St Louis
Tue 8/11
3:39 pm-4:00 am
1 stop22h 21m
Incheon Intl
Sun 8/23
7:20 pm-12:41 am
1 stop19h 21m
$1,387
Showing 1-10 of 33 resultsSorted by cheapest first
Best time to book a flight from St. Louis to South Korea
Have a flexible travel schedule? Discover the best time to fly to South Korea from St. Louis with our price prediction graph.
STL-ICN
STL-GMP
STL-TAE
STL-PUS
STL-CJU
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 South Korea
STL-KR0
STL-ICN
STL-GMP
STL-TAE
STL-PUS
What is the cheapest month to book a flight from St. Louis to South Korea?
Currently, March is the cheapest month in which you can book a flight from St. Louis to South Korea (average of $745). Flying from St. Louis to South Korea in June is currently the most expensive (average of $1,083). 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.
Reviews of airlines servicing South Korea
Get insights into the airlines that provide service to South Korea. 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 South Korea. Reviews last updated July 13, 2026.
Get a feel of what it's like to fly with Korean Air,Delta, andUnited Airlines from St. Louis to South Korea by reading reviews from past customers. Users have also rated airlines in terms of entertainment options, comfort, food, crew/service, and boarding process.
Boarding
8.5
Overall
8.4
Crew
8.7
Entertainment
8.2
Comfort
8.3
Food
8.1
Reviews
1 / 20
10.0
ExcellentChris,Mar 2025
SEA - ICN
Boarding
8.5
Overall
8.4
Crew
8.7
Entertainment
8.2
Comfort
8.3
Food
8.1
Reviews
1 / 20
10.0
ExcellentChris,Mar 2025
SEA - ICN
Boarding
8.5
Overall
8.4
Crew
8.7
Entertainment
8.2
Comfort
8.3
Food
8.1
Reviews
1 / 20
10.0
ExcellentChris,Mar 2025
SEA - ICN
Boarding
8.5
Overall
8.4
Crew
8.7
Entertainment
8.2
Comfort
8.3
Food
8.1
Reviews
1 / 20
10.0
ExcellentChris,Mar 2025
SEA - ICN
Related info for your journey
Find useful and relevant information for your journey from St. Louis to South Korea. 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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Alternative routes for St. Louis to South Korea
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Complete your trip
Complete your trip to South Korea by adding a car rental and/or hotel reservation to your travel itinerary.
Search flights from St. Louis to South Korea by cabin class
Find flights from St. Louis to South Korea, based on your preferred cabin class, be it economy, premium economy, business, or first class.
St. Louis and South Korea flights
Browse other St. Louis and South Korea flight options. Last updated on July 13, 2026.
Popular flight searches
Check out other popular destinations found by fellow travelers in 2026
Fly to South Korea regions
Consider these flights traveling to South Korea regions.
Top 3 airlines flying from St. Louis to South Korea
Discover the top 3 airlines that operate flights from St. Louis to South Korea. 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 July 13, 2026.
| Airline | Cheapest | Average | Flexibility | On-time |
|---|---|---|---|---|
| Cheapest$846 | Average$1,034 | FlexibilityNo cancel fee | On-timeN/A | |
| Cheapest$865 | Average$1,181 | FlexibilityNo cancel fee | On-time69% | |
| Cheapest$999 | Average$1,624 | FlexibilityNo cancel fee | On-time81% |