$548+ 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 4/7. Fares are subject to change and may not be available on all flights or dates of travel.
STL — ICN
May 2 — May 91
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
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 April 2, 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 April 2, 2026.
This Air Canada deal was found by Cheapflights users on 3/30. 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 5/77:05 am
STL
- ICN
1 stop20h 25m
Air Canada
Wed 6/106:00 pm
ICN
- STL
1 stop40h 25m
Air Canada
Deal found 3/30![Air Canada logo]()
$981
This Air Canada deal was found by Cheapflights users on 3/29. 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 9/222:40 pm
STL
- ICN
2 stops35h 25m
Air Canada
Mon 9/287:05 pm
ICN
- STL
1 stop32h 55m
Air Canada
Deal found 3/29![Air Canada logo]()
$984
This Air Canada deal was found by Cheapflights users on 3/30. 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 5/77:05 am
STL
- ICN
1 stop20h 25m
Air Canada
Thu 6/115:45 pm
ICN
- STL
2 stops32h 21m
Air Canada
Deal found 3/30![Air Canada logo]()
$985
This FlightHub deal was found by Cheapflights users on 3/29. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 11/14:15 pm
STL
- ICN
1 stop35h 10m
Air Canada
Thu 11/56:55 pm
ICN
- STL
2 stops35h 35m
Air Canada
Deal found 3/29![Air Canada logo]()
$994
This FlightHub deal was found by Cheapflights users on 3/28. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 10/512:10 pm
STL
- ICN
2 stops37h 55m
Air Canada
Tue 10/205:45 pm
ICN
- STL
2 stops34h 15m
Air Canada
Deal found 3/28![Air Canada logo]()
$1,003
This FlightHub deal was found by Cheapflights users on 3/28. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 10/68:55 am
STL
- ICN
1 stop18h 35m
Air Canada
Tue 10/205:45 pm
ICN
- STL
2 stops34h 15m
Air Canada
Deal found 3/28![Air Canada logo]()
$1,008
This Justfly.com deal was found by Cheapflights users on 3/31. 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.
Sun 9/2012:10 pm
STL
- ICN
2 stops37h 55m
Air Canada
Thu 11/196:55 pm
ICN
- STL
2 stops35h 35m
Air Canada
Deal found 3/31![Air Canada logo]()
$1,017
This Air Canada deal was found by Cheapflights users on 3/29. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Air Canada is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 9/178:55 am
STL
- ICN
1 stop18h 35m
Air Canada
Fri 9/257:05 pm
ICN
- STL
1 stop32h 55m
Air Canada
Deal found 3/29![Air Canada logo]()
$1,021
This Air Canada deal was found by Cheapflights users on 3/30. 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 5/87:05 am
STL
- ICN
1 stop20h 25m
Air Canada
Thu 6/115:45 pm
ICN
- STL
2 stops32h 21m
Air Canada
Deal found 3/30![Air Canada logo]()
$1,022
This Justfly.com deal was found by Cheapflights users on 3/30. 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.
Thu 10/293:24 pm
STL
- GMP
2 stops31h 26m
Multiple Airlines
Fri 11/61:50 pm
GMP
- STL
2 stops49h 09m
Multiple Airlines
Deal found 3/30![Multiple Airlines logo]()
$1,167
This Japan Airlines deal was found by Cheapflights users on 3/29. 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.
Tue 9/229:46 am
STL
- GMP
2 stops21h 29m
Multiple Airlines
Mon 9/288:00 am
GMP
- STL
2 stops24h 37m
Multiple Airlines
Deal found 3/29![Multiple Airlines logo]()
$1,314
This Japan Airlines deal was found by Cheapflights users on 3/27. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Japan Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 10/196:30 am
STL
- GMP
2 stops45h 25m
Japan Airlines
Thu 10/228:00 am
GMP
- STL
2 stops22h 15m
Japan Airlines
Deal found 3/27![Japan Airlines logo]()
$1,361
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 April 2, 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 April 2, 2026.
This Delta deal was found by Cheapflights users on 3/29. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 4/169:26 am
STL
- ICN
1 stop17h 54m
Delta
Wed 4/227:20 pm
ICN
- STL
1 stop19h 05m
Delta
Deal found 3/29![Delta logo]()
$1,166
This United Airlines deal was found by Cheapflights users on 3/28. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 4/267:05 pm
STL
- ICN
1 stop19h 15m
United Airlines
Sat 5/24:50 pm
ICN
- STL
2 stops20h 29m
United Airlines
Deal found 3/28![United Airlines logo]()
$1,171
This Japan Airlines deal was found by Cheapflights users on 3/29. 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.
Tue 9/229:46 am
STL
- GMP
2 stops21h 29m
Multiple Airlines
Mon 9/288:00 am
GMP
- STL
2 stops24h 37m
Multiple Airlines
Deal found 3/29![Multiple Airlines logo]()
$1,314
This Ovago deal was found by Cheapflights users on 4/1. 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.
Wed 8/198:35 am
STL
- GMP
2 stops22h 40m
Japan Airlines
Wed 9/28:00 am
GMP
- STL
2 stops21h 48m
Japan Airlines
Deal found 4/1![Japan Airlines logo]()
$1,422
This Korean Air deal was found by Cheapflights users on 3/28. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Korean Air is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 9/86:30 am
STL
- PUS
2 stops23h 05m
Korean Air
Thu 9/107:00 am
PUS
- STL
2 stops21h 38m
Korean Air
Deal found 3/28![Korean Air logo]()
$1,539
This Delta deal was found by Cheapflights users on 3/30. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 4/156:19 am
STL
- ICN
2 stops20h 31m
Delta
Wed 4/227:20 pm
ICN
- STL
1 stop19h 05m
Delta
Deal found 3/30![Delta logo]()
$1,171
This United Airlines deal was found by Cheapflights users on 3/29. 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 4/187:05 pm
STL
- ICN
1 stop19h 15m
United Airlines
Sun 4/264:50 pm
ICN
- STL
1 stop27h 00m
United Airlines
Deal found 3/29![United Airlines logo]()
$1,296
This United Airlines deal was found by Cheapflights users on 4/1. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 4/1510:09 am
STL
- ICN
2 stops28h 11m
United Airlines
Wed 4/2211:30 am
ICN
- STL
2 stops23h 24m
United Airlines
Deal found 4/1![United Airlines logo]()
$1,298
This KAYAK deal was found by Cheapflights users on 3/31. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure KAYAK is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 4/307:12 am
STL
- GMP
2 stops20h 43m
Japan Airlines
Thu 5/78:00 am
GMP
- STL
2 stops20h 03m
Japan Airlines
Deal found 3/31![Japan Airlines logo]()
$1,435
This Korean Air deal was found by Cheapflights users on 3/30. 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 9/66:00 am
STL
- TAE
2 stops23h 55m
Korean Air
Tue 9/87:55 am
TAE
- STL
2 stops29h 42m
Korean Air
Deal found 3/30![Korean Air logo]()
$1,557
This FlightHub deal was found by Cheapflights users on 3/27. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 4/267:00 am
STL
- GMP
2 stops45h 10m
Multiple Airlines
Sat 5/21:50 pm
GMP
- STL
2 stops48h 09m
Multiple Airlines
Deal found 3/27![Multiple Airlines logo]()
$1,617
This Korean Air deal was found by Cheapflights users on 3/30. 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.
Mon 9/76:45 am
STL
- PUS
2 stops22h 50m
Korean Air
Wed 9/94:30 pm
PUS
- STL
2 stops20h 31m
Korean Air
Deal found 3/30![Korean Air logo]()
$1,559
This BusinessClass deal was found by Cheapflights users on 3/28. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure BusinessClass is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 4/168:54 am
STL
- GMP
2 stops22h 21m
Japan Airlines
Wed 4/228:00 am
GMP
- STL
2 stops29h 57m
Japan Airlines
Deal found 3/28![Japan Airlines logo]()
$1,564
This Japan Airlines deal was found by Cheapflights users on 4/1. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Japan Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 7/269:08 am
STL
- GMP
2 stops22h 07m
Multiple Airlines
Wed 8/128:00 am
GMP
- STL
2 stops21h 48m
Multiple Airlines
Deal found 4/1![Multiple Airlines logo]()
$1,635
This Delta deal was found by Cheapflights users on 3/29. 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 6/26:00 am
STL
- PUS
2 stops24h 45m
Delta
Tue 6/304:30 pm
PUS
- STL
2 stops36h 10m
Delta
Deal found 3/29![Delta logo]()
$1,845
This KAYAK deal was found by Cheapflights users on 3/29. 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 4/157:05 am
STL
- GMP
2 stops24h 10m
Japan Airlines
Wed 4/228:00 am
GMP
- STL
2 stops20h 03m
Japan Airlines
Deal found 3/29![Japan Airlines logo]()
$1,713
This FlightHub deal was found by Cheapflights users on 3/28. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 4/277:05 am
STL
- GMP
2 stops24h 10m
Japan Airlines
Mon 5/48:00 am
GMP
- STL
2 stops20h 03m
Japan Airlines
Deal found 3/28![Japan Airlines logo]()
$1,790
This Mytrip deal was found by Cheapflights users on 3/29. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 5/137:05 am
STL
- CJU
2 stops25h 20m
Multiple Airlines
Wed 5/206:30 am
CJU
- STL
3 stops27h 55m
Multiple Airlines
Deal found 3/29![Multiple Airlines logo]()
$2,005
This Mytrip deal was found by Cheapflights users on 3/30. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 5/147:05 am
STL
- PUS
3 stops33h 25m
Multiple Airlines
Thu 5/217:30 am
PUS
- STL
2 stops26h 39m
Multiple Airlines
Deal found 3/30![Multiple Airlines logo]()
$2,101
This Mytrip deal was found by Cheapflights users on 3/30. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 6/11:05 pm
STL
- PUS
3 stops32h 30m
Multiple Airlines
Sat 6/137:30 am
PUS
- STL
2 stops42h 36m
Multiple Airlines
Deal found 3/30![Multiple Airlines logo]()
$2,399
This Mytrip deal was found by Cheapflights users on 3/30. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 5/157:05 am
STL
- CJU
2 stops41h 55m
Multiple Airlines
Fri 5/228:45 am
CJU
- STL
3 stops25h 24m
Multiple Airlines
Deal found 3/30![Multiple Airlines logo]()
$2,669
This Mytrip deal was found by Cheapflights users on 4/1. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 5/167:05 am
STL
- CJU
2 stops39h 25m
Multiple Airlines
Sat 5/233:00 pm
CJU
- STL
3 stops35h 06m
Multiple Airlines
Deal found 4/1![Multiple Airlines logo]()
$2,937
This Mytrip deal was found by Cheapflights users on 3/28. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 6/91:05 pm
STL
- PUS
3 stops32h 30m
Multiple Airlines
Fri 7/1012:35 pm
PUS
- STL
2 stops63h 27m
Multiple Airlines
Deal found 3/28![Multiple Airlines logo]()
$3,080
This Mytrip deal was found by Cheapflights users on 3/29. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 6/11:05 pm
STL
- PUS
3 stops32h 30m
Multiple Airlines
Tue 6/3012:35 pm
PUS
- STL
2 stops63h 27m
Multiple Airlines
Deal found 3/29![Multiple Airlines logo]()
$3,268
This KAYAK deal was found by Cheapflights users on 3/31. 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 6/69:23 am
STL
- CJU
2 stops19h 42m
Multiple Airlines
Sun 6/1412:55 pm
CJU
- STL
2 stops19h 18m
Multiple Airlines
Deal found 3/31![Multiple Airlines logo]()
$10,977
Last-minute flights from St. Louis to South KoreaDiscover last-minute flight deals from St. Louis to South Korea. Data last updated April 2, 2026 and is based on user searches.
Discover last-minute flight deals from St. Louis to South Korea. Data last updated April 2, 2026 and is based on user searches.
This KAYAK deal was found by Cheapflights users on 4/1. 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
Wed 4/2212:05 pm
GMP
- STL
2 stops25h 52m
Japan Airlines
Deal found 4/1![Japan Airlines logo]()
$1,519
This BusinessClass deal was found by Cheapflights users on 3/28. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure BusinessClass is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 4/168:54 am
STL
- GMP
2 stops22h 21m
Japan Airlines
Wed 4/228:00 am
GMP
- STL
2 stops29h 57m
Japan Airlines
Deal found 3/28![Japan Airlines logo]()
$1,564
This Air Canada deal was found by Cheapflights users on 3/28. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Air Canada is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 4/264:05 pm
STL
- ICN
2 stops34h 00m
Air Canada
Sat 5/25:45 pm
ICN
- STL
2 stops32h 21m
Air Canada
Deal found 3/28![Air Canada logo]()
$1,105
This FlightHub deal was found by Cheapflights users on 3/27. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 4/267:00 am
STL
- GMP
2 stops45h 10m
Multiple Airlines
Sat 5/21:50 pm
GMP
- STL
2 stops48h 09m
Multiple Airlines
Deal found 3/27![Multiple Airlines logo]()
$1,617
This oojo deal was found by Cheapflights users on 3/30. 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.
Sun 4/267:12 am
STL
- GMP
2 stops20h 43m
Japan Airlines
Sat 5/27:15 pm
GMP
- STL
2 stops42h 42m
Japan Airlines
Deal found 3/30![Japan Airlines logo]()
$1,663
This KAYAK deal was found by Cheapflights users on 3/31. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure KAYAK is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 4/307:12 am
STL
- GMP
2 stops20h 43m
Japan Airlines
Thu 5/78:00 am
GMP
- STL
2 stops20h 03m
Japan Airlines
Deal found 3/31![Japan Airlines logo]()
$1,435
This Air Canada deal was found by Cheapflights users on 3/30. 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 5/77:05 am
STL
- ICN
1 stop20h 25m
Air Canada
Wed 6/106:00 pm
ICN
- STL
1 stop40h 25m
Air Canada
Deal found 3/30![Air Canada logo]()
$981
This Air Canada deal was found by Cheapflights users on 3/30. 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 5/77:05 am
STL
- ICN
1 stop20h 25m
Air Canada
Thu 6/115:45 pm
ICN
- STL
2 stops32h 21m
Air Canada
Deal found 3/30![Air Canada logo]()
$985
This Air Canada deal was found by Cheapflights users on 3/30. 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 5/87:05 am
STL
- ICN
1 stop20h 25m
Air Canada
Thu 6/115:45 pm
ICN
- STL
2 stops32h 21m
Air Canada
Deal found 3/30![Air Canada logo]()
$1,022
This Air Canada deal was found by Cheapflights users on 3/30. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Air Canada is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 5/117:05 am
STL
- ICN
1 stop20h 25m
Air Canada
Tue 6/236:00 pm
ICN
- STL
1 stop40h 25m
Air Canada
Deal found 3/30![Air Canada logo]()
$1,095
This flugladen.de deal was found by Cheapflights users on 3/27. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure flugladen.de is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 5/116:21 am
STL
- GMP
2 stops24h 54m
Japan Airlines
Mon 5/188:00 am
GMP
- STL
2 stops29h 59m
Japan Airlines
Deal found 3/27![Japan Airlines logo]()
$1,666
This Air Canada deal was found by Cheapflights users on 3/28. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Air Canada is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 5/132:15 pm
STL
- ICN
2 stops35h 50m
Air Canada
Wed 5/205:45 pm
ICN
- STL
2 stops32h 21m
Air Canada
Deal found 3/28![Air Canada logo]()
$1,098
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 April 2, 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 April 2, 2026.
This Air Canada deal was found by Cheapflights users on 3/31. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Air Canada is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 4/74:05 pm
STL
- ICN
1 stop35h 25m
Air Canada
Deal found 3/31![Air Canada logo]()
$548
This United Airlines deal was found by Cheapflights users on 3/31. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 4/74:30 pm
STL
- ICN
2 stops21h 50m
United Airlines
Deal found 3/31![United Airlines logo]()
$568
This Trip.com deal was found by Cheapflights users on 3/30. 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.
Wed 4/157:00 am
STL
- PUS
2 stops45h 00m
Multiple Airlines
Deal found 3/30![Multiple Airlines logo]()
$652
This Kiwi.com deal was found by Cheapflights users on 3/30. 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 5/235:27 pm
STL
- ICN
3 stops58h 28m
Multiple Airlines
Deal found 3/30![Multiple Airlines logo]()
$663
This Kiwi.com deal was found by Cheapflights users on 3/31. 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 4/711:21 am
STL
- ICN
3 stops47h 04m
Multiple Airlines
Deal found 3/31![Multiple Airlines logo]()
$679
This Kiwi.com deal was found by Cheapflights users on 3/30. 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 5/225:27 pm
STL
- ICN
2 stops58h 28m
Multiple Airlines
Deal found 3/30![Multiple Airlines logo]()
$701
This Kiwi.com deal was found by Cheapflights users on 3/31. 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 5/268:08 pm
STL
- ICN
3 stops59h 32m
Multiple Airlines
Deal found 3/31![Multiple Airlines logo]()
$703
This FlightHub deal was found by Cheapflights users on 3/31. 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 4/76:21 am
STL
- GMP
2 stops48h 54m
Japan Airlines
Deal found 3/31![Japan Airlines logo]()
$800
This Kiwi.com deal was found by Cheapflights users on 3/30. 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 5/277:41 pm
STL
- GMP
3 stops51h 14m
Multiple Airlines
Deal found 3/30![Multiple Airlines logo]()
$904
This oojo deal was found by Cheapflights users on 3/31. 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.
Mon 6/89:08 am
STL
- GMP
2 stops46h 07m
Japan Airlines
Deal found 3/31![Japan Airlines logo]()
$941
This Kiwi.com deal was found by Cheapflights users on 3/30. 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 5/238:08 pm
STL
- GMP
3 stops52h 17m
Multiple Airlines
Deal found 3/30![Multiple Airlines logo]()
$968
This Kiwi.com deal was found by Cheapflights users on 3/31. 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 6/87:41 pm
STL
- GMP
3 stops51h 14m
Multiple Airlines
Deal found 3/31![Multiple Airlines logo]()
$973
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 April 2, 2026.
Most accurate provider | FlightHub 3 stars |
|---|---|
Most trusted provider | FlightHub 3 stars |
Round-trip from | $981 (Air Canada) |
One-way from | $548 (Air Canada) |
Popular in | July |
Cheapest in | February |
Average price | $891 |
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 April 2, 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
Quickest round-trip
St. LouisIncheon
STL - ICN
STLICN
Lambert-St Louis
Thu 4/16
9:26 am-5:20 pm
1 stop17h 54m
Incheon Intl
Wed 4/22
7:20 pm-12:25 am
1 stop19h 05m
$1,166
St. LouisIncheon
STL - ICN
STLICN
Lambert-St Louis
Sun 4/26
7:05 pm-4:20 am
1 stop19h 15m
Incheon Intl
Sat 5/2
4:50 pm-11:19 pm
2 stops20h 29m
$1,171
St. LouisIncheon
STL - ICN
STLICN
Lambert-St Louis
Wed 4/15
6:19 am-4:50 pm
2 stops20h 31m
Incheon Intl
Wed 4/22
7:20 pm-12:25 am
1 stop19h 05m
$1,171
St. LouisIncheon
STL - ICN
STLICN
Lambert-St Louis
Sat 4/18
7:05 pm-4:20 am
1 stop19h 15m
Incheon Intl
Sun 4/26
4:50 pm-5:50 am
1 stop27h 00m
$1,296
St. LouisIncheon
STL - ICN
STLICN
Lambert-St Louis
Wed 4/15
10:09 am-4:20 am
2 stops28h 11m
Incheon Intl
Wed 4/22
11:30 am-8:54 pm
2 stops23h 24m
$1,298
St. LouisSeoul
STL - GMP
STLGMP
Lambert-St Louis
Tue 9/22
9:46 am-9:15 pm
2 stops21h 29m
Seoul Gimpo Intl
Mon 9/28
8:00 am-6:37 pm
2 stops24h 37m
$1,314
St. LouisSeoul
STL - GMP
STLGMP
Lambert-St Louis
Wed 8/19
8:35 am-9:15 pm
2 stops22h 40m
Seoul Gimpo Intl
Wed 9/2
8:00 am-3:48 pm
2 stops21h 48m
$1,422
St. LouisSeoul
STL - GMP
STLGMP
Lambert-St Louis
Thu 4/30
7:12 am-5:55 pm
2 stops20h 43m
Seoul Gimpo Intl
Thu 5/7
8:00 am-2:03 pm
2 stops20h 03m
$1,435
St. LouisBusan
STL - PUS
STLPUS
Lambert-St Louis
Tue 9/8
6:30 am-7:35 pm
2 stops23h 05m
Busan Gimhae
Thu 9/10
7:00 am-2:38 pm
2 stops21h 38m
$1,539
St. LouisDaegu
STL - TAE
STLTAE
Lambert-St Louis
Sun 9/6
6:00 am-7:55 pm
2 stops23h 55m
Daegu
Tue 9/8
7:55 am-11:37 pm
2 stops29h 42m
$1,557
Showing 1-10 of 45 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-PUS
STL-TAE
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-PUS
STL-TAE
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 $679). Flying from St. Louis to South Korea in July is currently the most expensive (average of $1,272). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.
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 April 2, 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 April 2, 2026.
Get a feel of what it's like to fly with Delta,United Airlines, andAmerican 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.
Comfort
7.9
Overall
7.9
Boarding
8.1
Food
7.2
Crew
8.5
Entertainment
7.8
Reviews
1 / 20
6.0
GoodJim,Nov 2025
AVL - ATL
Comfort
7.9
Overall
7.9
Boarding
8.1
Food
7.2
Crew
8.5
Entertainment
7.8
Reviews
1 / 20
6.0
GoodJim,Nov 2025
AVL - ATL
Comfort
7.9
Overall
7.9
Boarding
8.1
Food
7.2
Crew
8.5
Entertainment
7.8
Reviews
1 / 20
6.0
GoodJim,Nov 2025
AVL - ATL
Comfort
7.9
Overall
7.9
Boarding
8.1
Food
7.2
Crew
8.5
Entertainment
7.8
Reviews
1 / 20
6.0
GoodJim,Nov 2025
AVL - ATL
Comfort
7.9
Overall
7.9
Boarding
8.1
Food
7.2
Crew
8.5
Entertainment
7.8
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
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 April 2, 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 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 April 2, 2026.
| Airline | Cheapest | Average | Flexibility | On-time |
|---|---|---|---|---|
| Cheapest$846 | Average$1,835 | FlexibilityNo cancel fee | On-time71% | |
| Cheapest$846 | Average$1,055 | FlexibilityNo cancel fee | On-timeN/A | |
| Cheapest$865 | Average$1,199 | FlexibilityNo cancel fee | On-time69% | |
| Cheapest$1,083 | Average$1,475 | FlexibilityNo cancel fee | On-time67% |