$472+ 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 8/14. Fares are subject to change and may not be available on all flights or dates of travel.
STL — ICN
Aug 23 — Aug 301
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
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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 St. Louis to South Korea
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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 24, 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 24, 2026.
This Delta deal was found by Cheapflights users on 7/24. 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.
Mon 10/52:30 pm
STL
- ICN
1 stop23h 30m
Delta
Wed 11/49:35 am
ICN
- STL
1 stop26h 06m
Delta
Deal found 7/24![Delta logo]()
$1,106
This American Airlines deal was found by Cheapflights users on 7/21. 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.
Mon 10/266:32 am
STL
- ICN
1 stop19h 53m
American Airlines
Wed 11/256:50 pm
ICN
- STL
1 stop29h 40m
American Airlines
Deal found 7/21![American Airlines logo]()
$1,112
This Cathay Pacific deal was found by Cheapflights users on 7/21. 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 Cathay Pacific is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 9/236:29 am
STL
- ICN
2 stops25h 56m
Multiple Airlines
Sun 10/48:05 pm
ICN
- STL
2 stops39h 03m
Multiple Airlines
Deal found 7/21![Multiple Airlines logo]()
$1,120
This Cathay Pacific deal was found by Cheapflights users on 7/20. 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 Cathay Pacific is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 9/26:00 am
STL
- ICN
2 stops28h 25m
Multiple Airlines
Wed 9/238:00 am
ICN
- STL
2 stops29h 43m
Multiple Airlines
Deal found 7/20![Multiple Airlines logo]()
$1,121
This Delta deal was found by Cheapflights users on 7/23. 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 9/168:46 am
STL
- ICN
1 stop18h 34m
Delta
Fri 9/257:40 pm
ICN
- STL
1 stop17h 36m
Delta
Deal found 7/23![Delta logo]()
$1,156
This United Airlines deal was found by Cheapflights users on 7/22. 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.
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 7/22![United Airlines logo]()
$1,161
This American Airlines deal was found by Cheapflights users on 7/22. 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.
Sun 10/187:10 pm
STL
- ICN
1 stop30h 35m
American Airlines
Fri 10/306:50 pm
ICN
- STL
1 stop18h 52m
American Airlines
Deal found 7/22![American Airlines logo]()
$1,162
This Cathay Pacific deal was found by Cheapflights users on 7/22. 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.
Fri 10/167:10 pm
STL
- ICN
2 stops28h 55m
Multiple Airlines
Sun 10/257:35 pm
ICN
- STL
2 stops42h 11m
Multiple Airlines
Deal found 7/22![Multiple Airlines logo]()
$1,170
This Expedia deal was found by Cheapflights users on 7/20. 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 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
Mon 8/248:00 am
GMP
- STL
2 stops28h 59m
Japan Airlines
Deal found 7/20![Japan Airlines logo]()
$1,333
This Travelocity deal was found by Cheapflights users on 7/23. 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.
Wed 8/196:00 am
STL
- GMP
2 stops25h 15m
Japan Airlines
Fri 8/288:00 am
GMP
- STL
2 stops28h 59m
Japan Airlines
Deal found 7/23![Japan Airlines logo]()
$1,362
This Expedia deal was found by Cheapflights users on 7/23. 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 Expedia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 8/236:00 am
STL
- GMP
2 stops25h 15m
Japan Airlines
Sun 8/3012:05 pm
GMP
- STL
2 stops24h 54m
Japan Airlines
Deal found 7/23![Japan Airlines logo]()
$1,392
This KAYAK deal was found by Cheapflights users on 7/19. 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 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 8/208:00 am
GMP
- STL
2 stops22h 23m
Japan Airlines
Deal found 7/19![Japan Airlines logo]()
$1,513
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 24, 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 24, 2026.
This United Airlines deal was found by Cheapflights users on 7/24. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 9/71:36 pm
STL
- ICN
2 stops24h 44m
United Airlines
Mon 9/145:15 pm
ICN
- STL
2 stops30h 24m
United Airlines
Deal found 7/24![United Airlines logo]()
$1,111
This Delta deal was found by Cheapflights users on 7/20. 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.
Mon 10/58:00 am
STL
- ICN
1 stop17h 20m
Delta
Wed 11/49:35 am
ICN
- STL
2 stops21h 48m
Delta
Deal found 7/20![Delta logo]()
$1,111
This Cathay Pacific deal was found by Cheapflights users on 7/21. 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 Cathay Pacific is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 10/263:20 pm
STL
- ICN
2 stops32h 35m
Multiple Airlines
Wed 11/2510:00 am
ICN
- STL
2 stops28h 35m
Multiple Airlines
Deal found 7/21![Multiple Airlines logo]()
$1,120
This Expedia deal was found by Cheapflights users on 7/20. 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 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
Mon 8/248:00 am
GMP
- STL
2 stops28h 59m
Japan Airlines
Deal found 7/20![Japan Airlines logo]()
$1,333
This Korean Air deal was found by Cheapflights users on 7/19. 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 Korean Air is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 10/169:47 am
STL
- TAE
2 stops20h 08m
Korean Air
Tue 10/207:55 am
TAE
- STL
2 stops19h 14m
Korean Air
Deal found 7/19![Korean Air logo]()
$1,816
This United Airlines deal was found by Cheapflights users on 7/23. 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 10/53:12 pm
STL
- ICN
2 stops23h 08m
United Airlines
Wed 11/412:45 pm
ICN
- STL
2 stops23h 28m
United Airlines
Deal found 7/23![United Airlines logo]()
$1,111
This Delta deal was found by Cheapflights users on 7/23. 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 8/198:48 am
STL
- ICN
1 stop18h 32m
Delta
Fri 8/286:50 pm
ICN
- STL
1 stop19h 08m
Delta
Deal found 7/23![Delta logo]()
$1,156
This Cathay Pacific deal was found by Cheapflights users on 7/20. 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 Cathay Pacific is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 10/167:10 pm
STL
- ICN
2 stops28h 55m
Multiple Airlines
Sun 10/257:35 pm
ICN
- STL
2 stops42h 11m
Multiple Airlines
Deal found 7/20![Multiple Airlines logo]()
$1,171
This Delta deal was found by Cheapflights users on 7/21. 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.
Mon 10/266:00 am
STL
- ICN
2 stops20h 50m
Delta
Wed 11/259:35 am
ICN
- STL
1 stop18h 45m
Delta
Deal found 7/21![Delta logo]()
$1,161
This United Airlines deal was found by Cheapflights users on 7/23. 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.
Wed 8/193:32 pm
STL
- ICN
2 stops22h 48m
United Airlines
Fri 8/284:50 pm
ICN
- STL
2 stops20h 09m
United Airlines
Deal found 7/23![United Airlines logo]()
$1,161
This Travelocity deal was found by Cheapflights users on 7/23. 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.
Wed 8/196:00 am
STL
- GMP
2 stops25h 15m
Japan Airlines
Fri 8/288:00 am
GMP
- STL
2 stops28h 59m
Japan Airlines
Deal found 7/23![Japan Airlines logo]()
$1,362
This United Airlines deal was found by Cheapflights users on 7/23. 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.
Sun 8/2312:59 pm
STL
- ICN
2 stops25h 21m
United Airlines
Sun 8/3011:30 am
ICN
- STL
2 stops19h 04m
United Airlines
Deal found 7/23![United Airlines logo]()
$1,211
This Delta deal was found by Cheapflights users on 7/20. 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 8/186:00 am
STL
- ICN
2 stops20h 25m
Delta
Mon 8/247:20 pm
ICN
- STL
1 stop19h 21m
Delta
Deal found 7/20![Delta logo]()
$1,263
This Expedia deal was found by Cheapflights users on 7/23. 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 Expedia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 8/236:00 am
STL
- GMP
2 stops25h 15m
Japan Airlines
Sun 8/3012:05 pm
GMP
- STL
2 stops24h 54m
Japan Airlines
Deal found 7/23![Japan Airlines logo]()
$1,392
This Japan Airlines deal was found by Cheapflights users on 7/21. 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 Japan Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 9/237:21 am
STL
- GMP
2 stops23h 54m
Multiple Airlines
Sun 10/412:05 pm
GMP
- STL
2 stops25h 25m
Multiple Airlines
Deal found 7/21![Multiple Airlines logo]()
$1,521
This Korean Air deal was found by Cheapflights users on 7/19. 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 Korean Air is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 9/65:23 pm
STL
- PUS
2 stops34h 57m
Korean Air
Thu 9/108:00 am
PUS
- STL
2 stops25h 58m
Korean Air
Deal found 7/19![Korean Air logo]()
$1,859
This Japan Airlines deal was found by Cheapflights users on 7/24. 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 9/76:00 am
STL
- GMP
2 stops25h 15m
Multiple Airlines
Mon 9/1412:05 pm
GMP
- STL
2 stops25h 25m
Multiple Airlines
Deal found 7/24![Multiple Airlines logo]()
$1,604
This Japan Airlines deal was found by Cheapflights users on 7/22. 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 Japan Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 10/1811:31 am
STL
- GMP
2 stops19h 44m
Japan Airlines
Fri 10/3012:05 pm
GMP
- STL
2 stops25h 41m
Japan Airlines
Deal found 7/22![Japan Airlines logo]()
$1,807
This Japan Airlines deal was found by Cheapflights users on 7/22. 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 Japan Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 9/59:31 am
STL
- GMP
2 stops21h 44m
Multiple Airlines
Wed 9/2312:05 pm
GMP
- STL
2 stops25h 25m
Multiple Airlines
Deal found 7/22![Multiple Airlines logo]()
$2,078
This Japan Airlines deal was found by Cheapflights users on 7/22. 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 Japan Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 10/316:04 am
STL
- GMP
2 stops26h 01m
Japan Airlines
Wed 11/47:40 pm
GMP
- STL
2 stops43h 05m
Japan Airlines
Deal found 7/22![Japan Airlines logo]()
$2,102
This BusinessClass deal was found by Cheapflights users on 7/22. 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 BusinessClass is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 12/187:00 am
STL
- GMP
2 stops24h 05m
Japan Airlines
Sat 1/28:00 am
GMP
- STL
2 stops22h 00m
Japan Airlines
Deal found 7/22![Japan Airlines logo]()
$2,333
Last-minute flights from St. Louis to South KoreaDiscover last-minute flight deals from St. Louis to South Korea. Data last updated July 24, 2026 and is based on user searches.
Discover last-minute flight deals from St. Louis to South Korea. Data last updated July 24, 2026 and is based on user searches.
This Delta deal was found by Cheapflights users on 7/20. 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.
Sun 7/265:36 pm
STL
- ICN
1 stop33h 44m
Delta
Wed 8/127:20 pm
ICN
- STL
1 stop19h 21m
Delta
Deal found 7/20![Delta logo]()
$1,264
This Delta deal was found by Cheapflights users on 7/23. 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.
Tue 7/288:00 am
STL
- ICN
1 stop17h 20m
Delta
Tue 8/46:50 pm
ICN
- STL
1 stop27h 18m
Delta
Deal found 7/23![Delta logo]()
$1,258
This Delta deal was found by Cheapflights users on 7/22. 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.
Sun 8/26:58 pm
STL
- ICN
1 stop29h 12m
Delta
Thu 8/207:20 pm
ICN
- STL
1 stop19h 21m
Delta
Deal found 7/22![Delta logo]()
$1,308
This Delta deal was found by Cheapflights users on 7/22. 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.
Mon 8/36:00 am
STL
- ICN
2 stops20h 25m
Delta
Sat 8/227:20 pm
ICN
- STL
1 stop15h 40m
Delta
Deal found 7/22![Delta logo]()
$1,313
This FlightHub deal was found by Cheapflights users on 7/22. 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.
Tue 8/412:10 pm
STL
- ICN
2 stops61h 55m
Air Canada
Fri 8/215:45 pm
ICN
- STL
2 stops34h 19m
Air Canada
Deal found 7/22![Air Canada logo]()
$1,286
This BusinessClass deal was found by Cheapflights users on 7/22. 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 BusinessClass is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 8/512:10 pm
STL
- ICN
2 stops37h 55m
Asiana Airlines
Wed 8/195:45 pm
ICN
- STL
2 stops34h 17m
Asiana Airlines
Deal found 7/22![Asiana Airlines logo]()
$1,301
This Expedia deal was found by Cheapflights users on 7/20. 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 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
Mon 8/248:00 am
GMP
- STL
2 stops28h 59m
Japan Airlines
Deal found 7/20![Japan Airlines logo]()
$1,333
This Delta deal was found by Cheapflights users on 7/23. 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 8/198:48 am
STL
- ICN
1 stop18h 32m
Delta
Fri 8/286:50 pm
ICN
- STL
1 stop19h 08m
Delta
Deal found 7/23![Delta logo]()
$1,156
This United Airlines deal was found by Cheapflights users on 7/23. 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.
Wed 8/193:32 pm
STL
- ICN
2 stops22h 48m
United Airlines
Fri 8/284:50 pm
ICN
- STL
2 stops20h 09m
United Airlines
Deal found 7/23![United Airlines logo]()
$1,161
This Travelocity deal was found by Cheapflights users on 7/23. 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.
Wed 8/196:00 am
STL
- GMP
2 stops25h 15m
Japan Airlines
Fri 8/288:00 am
GMP
- STL
2 stops28h 59m
Japan Airlines
Deal found 7/23![Japan Airlines logo]()
$1,362
This United Airlines deal was found by Cheapflights users on 7/23. 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.
Sun 8/235:10 am
STL
- ICN
2 stops19h 50m
United Airlines
Sun 8/3011:30 am
ICN
- STL
1 stop20h 29m
United Airlines
Deal found 7/23![United Airlines logo]()
$1,206
This Delta deal was found by Cheapflights users on 7/23. 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.
Sun 8/236:20 am
STL
- ICN
1 stop21h 00m
Delta
Sun 8/307:20 pm
ICN
- STL
1 stop19h 21m
Delta
Deal found 7/23![Delta logo]()
$1,256
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 24, 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 24, 2026.
This Kiwi.com deal was found by Cheapflights users on 7/22. 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.
Fri 8/144:57 pm
STL
- ICN
3 stops59h 48m
Multiple Airlines
Deal found 7/22![Multiple Airlines logo]()
$472
This Kiwi.com deal was found by Cheapflights users on 7/22. 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 8/58:08 pm
STL
- ICN
2 stops32h 37m
Multiple Airlines
Deal found 7/22![Multiple Airlines logo]()
$516
This Kiwi.com deal was found by Cheapflights users on 7/23. 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.
Thu 9/36:45 pm
STL
- ICN
2 stops36h 55m
Multiple Airlines
Deal found 7/23![Multiple Airlines logo]()
$520
This Kiwi.com deal was found by Cheapflights users on 7/21. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 11/410:35 am
STL
- ICN
2 stops40h 10m
Multiple Airlines
Deal found 7/21![Multiple Airlines logo]()
$534
This Cathay Pacific deal was found by Cheapflights users on 7/22. 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 9/307:21 am
STL
- ICN
2 stops39h 19m
Multiple Airlines
Deal found 7/22![Multiple Airlines logo]()
$587
This Booking.com deal was found by Cheapflights users on 7/21. 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 Booking.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 11/47:00 am
STL
- ICN
1 stop19h 35m
Alaska Airlines
Deal found 7/21![Alaska Airlines logo]()
$603
This American Airlines deal was found by Cheapflights users on 7/22. 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.
Wed 8/56:36 am
STL
- ICN
1 stop19h 09m
American Airlines
Deal found 7/22![American Airlines logo]()
$614
This Air Canada deal was found by Cheapflights users on 7/22. 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.
Fri 8/1412:10 pm
STL
- ICN
1 stop38h 15m
Air Canada
Deal found 7/22![Air Canada logo]()
$634
This Air Canada deal was found by Cheapflights users on 7/22. 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.
Wed 9/3012:10 pm
STL
- ICN
1 stop38h 15m
Air Canada
Deal found 7/22![Air Canada logo]()
$640
This Booking.com deal was found by Cheapflights users on 7/21. 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 Booking.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 11/47:00 am
STL
- GMP
2 stops38h 50m
Multiple Airlines
Deal found 7/21![Multiple Airlines logo]()
$736
This oojo deal was found by Cheapflights users on 7/23. 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 oojo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 12/176:20 am
STL
- GMP
2 stops45h 00m
Japan Airlines
Deal found 7/23![Japan Airlines logo]()
$1,323
This BusinessClass deal was found by Cheapflights users on 7/21. 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 BusinessClass is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 11/47:24 am
STL
- GMP
2 stops23h 41m
Japan Airlines
Deal found 7/21![Japan Airlines logo]()
$2,979
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 24, 2026.
Most accurate provider | FlightHub 3 stars |
|---|---|
Most trusted provider | FlightHub 3 stars |
Round-trip from | $1,093 (American Airlines) |
One-way from | $455 (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 24, 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 9/7
1:36 pm-4:20 am
2 stops24h 44m
Incheon Intl
Mon 9/14
5:15 pm-9:39 am
2 stops30h 24m
$1,111
St. LouisIncheon
STL - ICN
STLICN
Lambert-St Louis
Mon 10/5
8:00 am-3:20 pm
1 stop17h 20m
Incheon Intl
Wed 11/4
9:35 am-4:23 pm
2 stops21h 48m
$1,111
St. LouisIncheon
STL - ICN
STLICN
Lambert-St Louis
Mon 10/5
3:12 pm-4:20 am
2 stops23h 08m
Incheon Intl
Wed 11/4
12:45 pm-9:13 pm
2 stops23h 28m
$1,111
St. LouisIncheon
STL - ICN
STLICN
Lambert-St Louis
Mon 10/26
3:20 pm-1:55 pm
2 stops32h 35m
Incheon Intl
Wed 11/25
10:00 am-11:35 pm
2 stops28h 35m
$1,120
Quickest round-trip
St. LouisIncheon
STL - ICN
STLICN
Lambert-St Louis
Wed 8/19
8:48 am-5:20 pm
1 stop18h 32m
Incheon Intl
Fri 8/28
6:50 pm-11:58 pm
1 stop19h 08m
$1,156
St. LouisIncheon
STL - ICN
STLICN
Lambert-St Louis
Mon 10/26
6:00 am-4:50 pm
2 stops20h 50m
Incheon Intl
Wed 11/25
9:35 am-1:20 pm
1 stop18h 45m
$1,161
St. LouisIncheon
STL - ICN
STLICN
Lambert-St Louis
Wed 8/19
3:32 pm-4:20 am
2 stops22h 48m
Incheon Intl
Fri 8/28
4:50 pm-10:59 pm
2 stops20h 09m
$1,161
St. LouisIncheon
STL - ICN
STLICN
Lambert-St Louis
Fri 10/16
7:10 pm-2:05 pm
2 stops28h 55m
Incheon Intl
Sun 10/25
7:35 pm-11:46 pm
2 stops42h 11m
$1,171
St. LouisIncheon
STL - ICN
STLICN
Lambert-St Louis
Sun 8/23
12:59 pm-4:20 am
2 stops25h 21m
Incheon Intl
Sun 8/30
11:30 am-4:34 pm
2 stops19h 04m
$1,211
St. LouisIncheon
STL - ICN
STLICN
Lambert-St Louis
Tue 8/18
6:00 am-4:25 pm
2 stops20h 25m
Incheon Intl
Mon 8/24
7:20 pm-12:41 am
1 stop19h 21m
$1,263
Showing 1-10 of 34 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
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, February is the cheapest month in which you can book a flight from St. Louis to South Korea (average of $865). Flying from St. Louis to South Korea in July is currently the most expensive (average of $1,536). 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 24, 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.
Food
8.1
Crew
8.7
Overall
8.4
Entertainment
8.2
Boarding
8.5
Comfort
8.3
Reviews
1 / 20
10.0
ExcellentChris,Mar 2025
SEA - ICN
Food
8.1
Crew
8.7
Overall
8.4
Entertainment
8.2
Boarding
8.5
Comfort
8.3
Reviews
1 / 20
10.0
ExcellentChris,Mar 2025
SEA - ICN
Food
8.1
Crew
8.7
Overall
8.4
Entertainment
8.2
Boarding
8.5
Comfort
8.3
Reviews
1 / 20
10.0
ExcellentChris,Mar 2025
SEA - ICN
Food
8.1
Crew
8.7
Overall
8.4
Entertainment
8.2
Boarding
8.5
Comfort
8.3
Reviews
1 / 20
10.0
ExcellentChris,Mar 2025
SEA - ICN
Related info for your journey
Find useful and relevant information for your journey from 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
See prices for flight routes from nearby airports that may be better suited for you.
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 24, 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 24, 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% |