$352+ 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 4/19. Fares are subject to change and may not be available on all flights or dates of travel.
STL — ICN
Mar 21 — Mar 281
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
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 February 19, 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 February 19, 2026.
This Delta deal was found by Cheapflights users on 2/16. 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 2/196:10 am
STL
- ICN
1 stop18h 20m
Delta
Wed 3/47:30 pm
ICN
- STL
1 stop18h 53m
Delta
Deal found 2/16![Delta logo]()
$817
This Gurufare deal was found by Cheapflights users on 2/18. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Gurufare is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 3/47:00 am
STL
- ICN
1 stop20h 35m
Multiple Airlines
Mon 3/98:35 pm
ICN
- STL
1 stop17h 24m
Multiple Airlines
Deal found 2/18![Multiple Airlines logo]()
$866
This United Airlines deal was found by Cheapflights users on 2/16. 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 2/175:25 pm
STL
- ICN
1 stop21h 15m
United Airlines
Sat 2/2112:45 pm
ICN
- STL
1 stop18h 42m
United Airlines
Deal found 2/16![United Airlines logo]()
$867
This Air Canada deal was found by Cheapflights users on 2/17. 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 4/154:05 pm
STL
- ICN
2 stops34h 00m
Air Canada
Wed 4/225:45 pm
ICN
- STL
2 stops35h 39m
Air Canada
Deal found 2/17![Air Canada logo]()
$871
This Air Canada deal was found by Cheapflights users on 2/19. 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 Air Canada is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 9/12:40 pm
STL
- ICN
2 stops35h 25m
Air Canada
Wed 11/46:55 pm
ICN
- STL
2 stops35h 35m
Air Canada
Deal found 2/19![Air Canada logo]()
$872
This Delta deal was found by Cheapflights users on 2/18. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 2/185:50 pm
STL
- ICN
1 stop32h 00m
Delta
Wed 2/258:05 pm
ICN
- STL
2 stops18h 18m
Delta
Deal found 2/18![Delta logo]()
$877
This BusinessClass deal was found by Cheapflights users on 2/17. 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.
Sun 4/194:05 pm
STL
- ICN
1 stop35h 25m
Asiana Airlines
Tue 4/287:05 pm
ICN
- STL
1 stop34h 19m
Asiana Airlines
Deal found 2/17![Asiana Airlines logo]()
$884
This Air Canada deal was found by Cheapflights users on 2/19. 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 Air Canada is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 4/64:05 pm
STL
- ICN
2 stops34h 00m
Air Canada
Mon 4/135:45 pm
ICN
- STL
2 stops35h 39m
Air Canada
Deal found 2/19![Air Canada logo]()
$885
This Air Canada deal was found by Cheapflights users on 2/16. 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 9/1612:10 pm
STL
- ICN
1 stop38h 05m
Air Canada
Fri 9/256:00 pm
ICN
- STL
1 stop38h 41m
Air Canada
Deal found 2/16![Air Canada logo]()
$899
This Gurufare deal was found by Cheapflights users on 2/17. 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 Gurufare is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 4/194:05 pm
STL
- ICN
1 stop35h 25m
Asiana Airlines
Thu 4/305:45 pm
ICN
- STL
2 stops40h 20m
Asiana Airlines
Deal found 2/17![Asiana Airlines logo]()
$902
This FlightHub deal was found by Cheapflights users on 2/17. 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 8/188:35 am
STL
- GMP
2 stops22h 40m
Japan Airlines
Sun 8/3012:05 pm
GMP
- STL
2 stops25h 03m
Japan Airlines
Deal found 2/17![Japan Airlines logo]()
$1,083
This Gurufare deal was found by Cheapflights users on 2/19. 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 Gurufare 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 01m
Japan Airlines
Deal found 2/19![Japan Airlines logo]()
$1,128
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 February 19, 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 February 19, 2026.
This Air Canada deal was found by Cheapflights users on 2/19. 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 Air Canada is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 4/154:05 pm
STL
- ICN
1 stop35h 25m
Air Canada
Wed 4/227:05 pm
ICN
- STL
1 stop34h 19m
Air Canada
Deal found 2/19![Air Canada logo]()
$871
This Alaska Airlines deal was found by Cheapflights users on 2/17. 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.
Wed 3/47:00 am
STL
- ICN
1 stop20h 35m
Multiple Airlines
Mon 3/98:35 pm
ICN
- STL
1 stop17h 24m
Multiple Airlines
Deal found 2/17![Multiple Airlines logo]()
$907
This FlightHub deal was found by Cheapflights users on 2/17. 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 8/188:35 am
STL
- GMP
2 stops22h 40m
Japan Airlines
Sun 8/3012:05 pm
GMP
- STL
2 stops25h 03m
Japan Airlines
Deal found 2/17![Japan Airlines logo]()
$1,083
This Korean Air deal was found by Cheapflights users on 2/17. 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.
Sat 3/75:01 pm
STL
- TAE
2 stops35h 44m
Korean Air
Sat 3/147:40 am
TAE
- STL
2 stops30h 18m
Korean Air
Deal found 2/17![Korean Air logo]()
$1,474
This Air Canada deal was found by Cheapflights users on 2/17. 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 3/44:05 pm
STL
- ICN
2 stops34h 05m
Air Canada
Mon 3/95:55 pm
ICN
- STL
2 stops35h 34m
Air Canada
Deal found 2/17![Air Canada logo]()
$871
This Air Canada deal was found by Cheapflights users on 2/19. 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 Air Canada is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 4/64:05 pm
STL
- ICN
2 stops34h 00m
Air Canada
Mon 4/135:45 pm
ICN
- STL
2 stops35h 39m
Air Canada
Deal found 2/19![Air Canada logo]()
$885
This Air Canada deal was found by Cheapflights users on 2/17. 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 4/194:05 pm
STL
- ICN
2 stops34h 00m
Air Canada
Sun 4/267:05 pm
ICN
- STL
1 stop34h 19m
Air Canada
Deal found 2/17![Air Canada logo]()
$909
This Gurufare deal was found by Cheapflights users on 2/19. 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 Gurufare 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 4/228:00 am
GMP
- STL
2 stops20h 01m
Japan Airlines
Deal found 2/19![Japan Airlines logo]()
$1,128
This Air Canada deal was found by Cheapflights users on 2/19. 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 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
1 stop35h 25m
Air Canada
Wed 5/67:05 pm
ICN
- STL
1 stop31h 01m
Air Canada
Deal found 2/19![Air Canada logo]()
$909
This Expedia deal was found by Cheapflights users on 2/19. 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 Expedia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 5/177:30 am
STL
- GMP
2 stops37h 35m
Multiple Airlines
Tue 5/267:40 am
GMP
- STL
2 stops42h 26m
Multiple Airlines
Deal found 2/19![Multiple Airlines logo]()
$1,213
This Gurufare deal was found by Cheapflights users on 2/19. 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 Gurufare 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 01m
Japan Airlines
Deal found 2/19![Japan Airlines logo]()
$1,128
This Air Canada deal was found by Cheapflights users on 2/18. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Air Canada is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 4/144:05 pm
STL
- ICN
2 stops34h 00m
Air Canada
Sat 4/255:45 pm
ICN
- STL
2 stops35h 39m
Air Canada
Deal found 2/18![Air Canada logo]()
$909
This KAYAK deal was found by Cheapflights users on 2/17. 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 4/158:54 am
STL
- GMP
2 stops22h 21m
Japan Airlines
Sat 4/258:00 am
GMP
- STL
2 stops20h 01m
Japan Airlines
Deal found 2/17![Japan Airlines logo]()
$1,183
This Air Canada deal was found by Cheapflights users on 2/17. 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 4/164:05 pm
STL
- ICN
2 stops34h 00m
Air Canada
Wed 4/225:45 pm
ICN
- STL
2 stops35h 39m
Air Canada
Deal found 2/17![Air Canada logo]()
$909
This Korean Air deal was found by Cheapflights users on 2/19. 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.
Wed 5/1311:18 am
STL
- PUS
2 stops19h 27m
Korean Air
Wed 6/244:30 pm
PUS
- STL
2 stops22h 06m
Korean Air
Deal found 2/19![Korean Air logo]()
$1,907
This KAYAK deal was found by Cheapflights users on 2/19. 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 7/228:55 am
STL
- CJU
2 stops22h 25m
Multiple Airlines
Sat 7/2511:45 am
CJU
- STL
2 stops40h 17m
Multiple Airlines
Deal found 2/19![Multiple Airlines logo]()
$3,416
Last-minute flights from St. Louis to South KoreaDiscover last-minute flight deals from St. Louis to South Korea. Data last updated February 19, 2026 and is based on user searches.
Discover last-minute flight deals from St. Louis to South Korea. Data last updated February 19, 2026 and is based on user searches.
This Delta deal was found by Cheapflights users on 2/16. 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 2/196:10 am
STL
- ICN
1 stop18h 20m
Delta
Wed 3/47:30 pm
ICN
- STL
1 stop18h 53m
Delta
Deal found 2/16![Delta logo]()
$817
This United Airlines deal was found by Cheapflights users on 2/17. 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 2/214:30 pm
STL
- ICN
2 stops22h 10m
United Airlines
Mon 2/236:00 pm
ICN
- STL
2 stops19h 59m
United Airlines
Deal found 2/17![United Airlines logo]()
$871
This Gurufare deal was found by Cheapflights users on 2/17. 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 Gurufare is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 2/214:30 pm
STL
- ICN
2 stops22h 10m
Asiana Airlines
Mon 2/236:00 pm
ICN
- STL
1 stop37h 44m
Asiana Airlines
Deal found 2/17![Asiana Airlines logo]()
$984
This Ovago deal was found by Cheapflights users on 2/17. 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.
Sat 2/212:47 pm
STL
- ICN
1 stop36h 48m
Multiple Airlines
Mon 2/238:35 pm
ICN
- STL
1 stop18h 24m
Multiple Airlines
Deal found 2/17![Multiple Airlines logo]()
$995
This Gurufare deal was found by Cheapflights users on 2/18. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Gurufare is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 3/47:00 am
STL
- ICN
1 stop20h 35m
Multiple Airlines
Mon 3/98:35 pm
ICN
- STL
1 stop17h 24m
Multiple Airlines
Deal found 2/18![Multiple Airlines logo]()
$866
This Korean Air deal was found by Cheapflights users on 2/17. 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.
Sat 3/75:01 pm
STL
- TAE
2 stops35h 44m
Korean Air
Sat 3/147:40 am
TAE
- STL
2 stops30h 18m
Korean Air
Deal found 2/17![Korean Air logo]()
$1,474
This United Airlines deal was found by Cheapflights users on 2/17. 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 3/165:55 pm
STL
- ICN
2 stops20h 45m
United Airlines
Tue 3/314:50 pm
ICN
- STL
2 stops30h 35m
United Airlines
Deal found 2/17![United Airlines logo]()
$921
This Japan Airlines deal was found by Cheapflights users on 2/19. 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 Japan Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 3/166:38 am
STL
- GMP
2 stops25h 27m
Multiple Airlines
Tue 3/318:00 am
GMP
- STL
2 stops20h 07m
Multiple Airlines
Deal found 2/19![Multiple Airlines logo]()
$1,382
This KAYAK deal was found by Cheapflights users on 2/17. 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 3/197:00 am
STL
- GMP
2 stops37h 55m
Japan Airlines
Thu 3/2612:05 pm
GMP
- STL
2 stops25h 53m
Japan Airlines
Deal found 2/17![Japan Airlines logo]()
$1,442
This United Airlines deal was found by Cheapflights users on 2/17. 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 3/255:15 am
STL
- ICN
2 stops20h 00m
United Airlines
Mon 3/3011:30 am
ICN
- STL
1 stop32h 20m
United Airlines
Deal found 2/17![United Airlines logo]()
$973
This KAYAK deal was found by Cheapflights users on 2/17. 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 3/257:00 am
STL
- GMP
2 stops25h 05m
Japan Airlines
Mon 3/308:00 am
GMP
- STL
2 stops19h 43m
Japan Airlines
Deal found 2/17![Japan Airlines logo]()
$1,510
This Delta deal was found by Cheapflights users on 2/16. 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 3/299:45 am
STL
- ICN
1 stop17h 35m
Delta
Mon 4/67:20 pm
ICN
- STL
1 stop19h 01m
Delta
Deal found 2/16![Delta logo]()
$989
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 February 19, 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 February 19, 2026.
This Gurufare deal was found by Cheapflights users on 2/18. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Gurufare is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 4/197:00 am
STL
- ICN
1 stop21h 35m
Multiple Airlines
Deal found 2/18![Multiple Airlines logo]()
$352
This Gurufare deal was found by Cheapflights users on 2/18. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Gurufare is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 4/73:50 pm
STL
- ICN
1 stop36h 45m
Multiple Airlines
Deal found 2/18![Multiple Airlines logo]()
$365
This Kiwi.com deal was found by Cheapflights users on 2/19. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 5/98:13 pm
STL
- ICN
2 stops43h 02m
Multiple Airlines
Deal found 2/19![Multiple Airlines logo]()
$423
This Delta deal was found by Cheapflights users on 2/19. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 4/76:00 am
STL
- ICN
2 stops21h 20m
Delta
Deal found 2/19![Delta logo]()
$443
This Kiwi.com deal was found by Cheapflights users on 2/19. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 5/118:13 pm
STL
- ICN
2 stops43h 02m
Multiple Airlines
Deal found 2/19![Multiple Airlines logo]()
$454
This Kiwi.com deal was found by Cheapflights users on 2/16. 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 5/168:13 pm
STL
- ICN
2 stops43h 02m
Multiple Airlines
Deal found 2/16![Multiple Airlines logo]()
$455
This Kiwi.com deal was found by Cheapflights users on 2/16. 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 5/64:46 pm
STL
- GMP
3 stops52h 04m
Multiple Airlines
Deal found 2/16![Multiple Airlines logo]()
$612
This Gurufare deal was found by Cheapflights users on 2/18. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Gurufare is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 4/197:12 am
STL
- GMP
2 stops24h 03m
Japan Airlines
Deal found 2/18![Japan Airlines logo]()
$624
This Gurufare deal was found by Cheapflights users on 2/18. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Gurufare is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 5/612:25 pm
STL
- GMP
2 stops42h 50m
Japan Airlines
Deal found 2/18![Japan Airlines logo]()
$629
This KAYAK deal was found by Cheapflights users on 2/16. 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.
Tue 5/56:21 am
STL
- GMP
2 stops24h 54m
Japan Airlines
Deal found 2/16![Japan Airlines logo]()
$643
This Kiwi.com deal was found by Cheapflights users on 2/19. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 5/57:00 am
STL
- GMP
3 stops39h 55m
Multiple Airlines
Deal found 2/19![Multiple Airlines logo]()
$654
This KAYAK deal was found by Cheapflights users on 2/16. 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 5/46:21 am
STL
- GMP
2 stops48h 54m
Japan Airlines
Deal found 2/16![Japan Airlines logo]()
$660
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 February 19, 2026.
Most accurate provider | FlightHub 3 stars |
|---|---|
Most trusted provider | FlightHub 3 stars |
Round-trip from | $866 (Gurufare) |
One-way from | $352 (Gurufare) |
Popular in | July |
Cheapest in | October |
Average price | $877 |
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 February 19, 2026.
Use the filters below to find and compare flights from St. Louis to South Korea that are best for you.
Fly from
St. Louis
Fly to
South Korea
Route
Depart
Return
Price
St. LouisIncheon
STL - ICN
STLICN
Lambert-St Louis
Wed 4/15
4:05 pm-5:30 pm
1 stop35h 25m
Incheon Intl
Wed 4/22
7:05 pm-3:24 pm
1 stop34h 19m
$871
St. LouisIncheon
STL - ICN
STLICN
Lambert-St Louis
Wed 3/4
4:05 pm-5:10 pm
2 stops34h 05m
Incheon Intl
Mon 3/9
5:55 pm-3:29 pm
2 stops35h 34m
$871
St. LouisIncheon
STL - ICN
STLICN
Lambert-St Louis
Mon 4/6
4:05 pm-4:05 pm
2 stops34h 00m
Incheon Intl
Mon 4/13
5:45 pm-3:24 pm
2 stops35h 39m
$885
St. LouisIncheon
STL - ICN
STLICN
Lambert-St Louis
Wed 3/4
7:00 am-6:35 pm
1 stop20h 35m
Incheon Intl
Mon 3/9
8:35 pm-11:59 pm
1 stop17h 24m
$907
St. LouisIncheon
STL - ICN
STLICN
Lambert-St Louis
Sun 4/19
4:05 pm-4:05 pm
2 stops34h 00m
Incheon Intl
Sun 4/26
7:05 pm-3:24 pm
1 stop34h 19m
$909
St. LouisIncheon
STL - ICN
STLICN
Lambert-St Louis
Sat 4/25
4:05 pm-5:30 pm
1 stop35h 25m
Incheon Intl
Wed 5/6
7:05 pm-12:06 pm
1 stop31h 01m
$909
St. LouisIncheon
STL - ICN
STLICN
Lambert-St Louis
Tue 4/14
4:05 pm-4:05 pm
2 stops34h 00m
Incheon Intl
Sat 4/25
5:45 pm-3:24 pm
2 stops35h 39m
$909
St. LouisIncheon
STL - ICN
STLICN
Lambert-St Louis
Thu 4/16
4:05 pm-4:05 pm
2 stops34h 00m
Incheon Intl
Wed 4/22
5:45 pm-3:24 pm
2 stops35h 39m
$909
St. LouisSeoul
STL - GMP
STLGMP
Lambert-St Louis
Tue 8/18
8:35 am-9:15 pm
2 stops22h 40m
Seoul Gimpo Intl
Sun 8/30
12:05 pm-11:08 pm
2 stops25h 03m
$1,083
St. LouisSeoul
STL - GMP
STLGMP
Lambert-St Louis
Thu 4/16
7:05 am-9:15 pm
2 stops24h 10m
Seoul Gimpo Intl
Wed 4/22
8:00 am-2:01 pm
2 stops20h 01m
$1,128
Showing 1-10 of 30 results
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, April is the cheapest month in which you can book a flight from St. Louis to South Korea (average of $643). Flying from St. Louis to South Korea in July is currently the most expensive (average of $1,204). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.
What is the cheapest time of day to fly from STL to KR?
Find hourly flight availability from St. Louis to South Korea. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated February 19, 2026.
It’s optimal to fly from St. Louis to South Korea in the evening. By choosing this option you can save up to 51% on the cost of your flight, compared to a flight in the afternoon.
What is the cheapest day to fly from St. Louis to South Korea?
Use this chart to determine the cheapest time to fly round-trip from St. Louis to South Korea. Price data was last updated on March 30, 2025.
Travelers seeking maximum savings on their St. Louis to South Korea flight should consider departing on Wednesday evenings when fares are most often at their lowest. Tuesday evenings flights should be avoided if possible as fares are typically the most expensive at this time.
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 February 19, 2026.
Get a feel of what it's like to fly with Delta, United Airlines, and American 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.
Entertainment
7.8
Boarding
8.1
Crew
8.5
Comfort
7.9
Food
7.2
Overall
7.9
Reviews
1 / 20
6.0
GoodJim,Nov 2025
AVL - ATL
Entertainment
7.8
Boarding
8.1
Crew
8.5
Comfort
7.9
Food
7.2
Overall
7.9
Reviews
1 / 20
6.0
GoodJim,Nov 2025
AVL - ATL
Entertainment
7.8
Boarding
8.1
Crew
8.5
Comfort
7.9
Food
7.2
Overall
7.9
Reviews
1 / 20
6.0
GoodJim,Nov 2025
AVL - ATL
Entertainment
7.8
Boarding
8.1
Crew
8.5
Comfort
7.9
Food
7.2
Overall
7.9
Reviews
1 / 20
6.0
GoodJim,Nov 2025
AVL - ATL
Entertainment
7.8
Boarding
8.1
Crew
8.5
Comfort
7.9
Food
7.2
Overall
7.9
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 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
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St. Louis and South Korea flights
Browse other St. Louis and South Korea flight options. Last updated on February 19, 2026.
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Top 4 airlines flying from St. Louis to South Korea
Discover the top 4 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 February 19, 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$1,571 | FlexibilityNo cancel fee | On-time69% | |
| Cheapest$874 | Average$1,527 | FlexibilityNo cancel fee | On-time67% |