$457+ Cheap flights from St. Louis (STL) to Seoul (SEL)
This is the cheapest one-way flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 8/14. Fares are subject to change and may not be available on all flights or dates of travel.
STL — SEL
Jul 10 — Jul 171
Round-trip
1 adult, Economy
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Find cheap flights from St. Louis to Seoul 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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Cheapest flights from St. Louis to SeoulExplore the most affordable flight options available from St. Louis to Seoul. Find the lowest fares from popular airlines and budget airlines, with prices last updated on June 10, 2026.
Explore the most affordable flight options available from St. Louis to Seoul. Find the lowest fares from popular airlines and budget airlines, with prices last updated on June 10, 2026.
This Ovago deal was found by Cheapflights users on 6/9. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Ovago is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 9/161:55 pm
STL
- ICN
2 stops38h 50m
WestJet
Fri 9/258:45 pm
ICN
- STL
2 stops32h 04m
WestJet
Deal found 6/9![WestJet logo]()
$1,179
This Cathay Pacific deal was found by Cheapflights users on 6/7. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Cathay Pacific is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 9/16:00 am
STL
- ICN
2 stops28h 25m
Multiple Airlines
Mon 9/141:55 am
ICN
- STL
2 stops32h 49m
Multiple Airlines
Deal found 6/7![Multiple Airlines logo]()
$1,183
This Ovago deal was found by Cheapflights users on 6/10. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Ovago is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 10/162:18 pm
STL
- ICN
2 stops38h 27m
WestJet
Sun 10/258:45 pm
ICN
- STL
2 stops40h 54m
WestJet
Deal found 6/10![WestJet logo]()
$1,224
This Air Canada deal was found by Cheapflights users on 6/8. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Air Canada is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 9/2912:10 pm
STL
- ICN
2 stops37h 55m
Air Canada
Wed 10/76:00 pm
ICN
- STL
1 stop38h 41m
Air Canada
Deal found 6/8![Air Canada logo]()
$1,250
This Air Canada deal was found by Cheapflights users on 6/9. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Air Canada is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 8/1012:10 pm
STL
- ICN
1 stop38h 15m
Air Canada
Mon 8/245:45 pm
ICN
- STL
2 stops34h 17m
Air Canada
Deal found 6/9![Air Canada logo]()
$1,256
This FlightHub deal was found by Cheapflights users on 6/9. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 9/112:10 pm
STL
- ICN
2 stops37h 55m
Air Canada
Wed 9/305:45 pm
ICN
- STL
2 stops38h 56m
Air Canada
Deal found 6/9![Air Canada logo]()
$1,260
This FlightHub deal was found by Cheapflights users on 6/6. Clicking the “Pick Dates” 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 11/13:11 pm
STL
- GMP
2 stops35h 49m
Multiple Airlines
Sat 11/141:50 pm
GMP
- STL
2 stops49h 06m
Multiple Airlines
Deal found 6/6![Multiple Airlines logo]()
$1,346
This Japan Airlines deal was found by Cheapflights users on 6/6. Clicking the “Pick Dates” 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.
Thu 9/108:30 am
STL
- GMP
2 stops36h 10m
Japan Airlines
Mon 9/148:00 am
GMP
- STL
2 stops29h 40m
Japan Airlines
Deal found 6/6![Japan Airlines logo]()
$1,576
This BusinessClass deal was found by Cheapflights users on 6/7. Clicking the “Pick Dates” 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.
Tue 7/288:38 am
STL
- GMP
2 stops22h 37m
Japan Airlines
Thu 8/208:00 am
GMP
- STL
2 stops22h 23m
Japan Airlines
Deal found 6/7![Japan Airlines logo]()
$1,613
This KAYAK deal was found by Cheapflights users on 6/7. Clicking the “Pick Dates” 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 7/298:38 am
STL
- GMP
2 stops22h 37m
Japan Airlines
Thu 8/207:15 pm
GMP
- STL
2 stops35h 09m
Japan Airlines
Deal found 6/7![Japan Airlines logo]()
$1,658
This KAYAK deal was found by Cheapflights users on 6/7. Clicking the “Pick Dates” 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.
Fri 7/316:55 am
STL
- GMP
2 stops37h 45m
Japan Airlines
Thu 8/2012:05 pm
GMP
- STL
2 stops42h 19m
Japan Airlines
Deal found 6/7![Japan Airlines logo]()
$1,742
This American Airlines deal was found by Cheapflights users on 6/9. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 7/295:32 am
STL
- GMP
2 stops22h 23m
Multiple Airlines
Thu 8/2012:05 pm
GMP
- STL
2 stops20h 00m
Multiple Airlines
Deal found 6/9![Multiple Airlines logo]()
$1,763
Best flights from St. Louis to SeoulDiscover carefully curated flight deals from St. Louis to Seoul that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated June 10, 2026.
Discover carefully curated flight deals from St. Louis to Seoul that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated June 10, 2026.
This Cathay Pacific deal was found by Cheapflights users on 6/7. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Cathay Pacific is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 7/285:13 pm
STL
- ICN
2 stops29h 27m
Multiple Airlines
Thu 8/208:00 am
ICN
- STL
2 stops28h 41m
Multiple Airlines
Deal found 6/7![Multiple Airlines logo]()
$1,418
This Delta deal was found by Cheapflights users on 6/7. Clicking the “Pick Dates” 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
Thu 8/206:50 pm
ICN
- STL
1 stop27h 18m
Delta
Deal found 6/7![Delta logo]()
$1,420
This Alaska Airlines deal was found by Cheapflights users on 6/6. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 9/106:29 am
STL
- ICN
1 stop21h 01m
Alaska Airlines
Mon 9/147:35 pm
ICN
- STL
1 stop18h 24m
Alaska Airlines
Deal found 6/6![Alaska Airlines logo]()
$1,420
This United Airlines deal was found by Cheapflights users on 6/6. Clicking the “Pick Dates” 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 7/267:23 pm
STL
- ICN
1 stop29h 37m
United Airlines
Wed 8/124:50 pm
ICN
- STL
2 stops33h 50m
United Airlines
Deal found 6/6![United Airlines logo]()
$1,453
This Japan Airlines deal was found by Cheapflights users on 6/6. Clicking the “Pick Dates” 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.
Thu 9/108:30 am
STL
- GMP
2 stops36h 10m
Japan Airlines
Mon 9/148:00 am
GMP
- STL
2 stops29h 40m
Japan Airlines
Deal found 6/6![Japan Airlines logo]()
$1,576
This Delta deal was found by Cheapflights users on 6/7. Clicking the “Pick Dates” 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 11/246:59 pm
STL
- ICN
1 stop29h 31m
Delta
Fri 12/46:00 pm
ICN
- STL
1 stop20h 39m
Delta
Deal found 6/7![Delta logo]()
$1,420
This United Airlines deal was found by Cheapflights users on 6/10. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 8/17:23 pm
STL
- ICN
1 stop18h 57m
United Airlines
Mon 8/174:50 pm
ICN
- STL
2 stops31h 20m
United Airlines
Deal found 6/10![United Airlines logo]()
$1,472
This Delta deal was found by Cheapflights users on 6/6. Clicking the “Pick Dates” 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 7/296:21 am
STL
- ICN
2 stops20h 29m
Delta
Mon 8/177:00 pm
ICN
- STL
2 stops27h 37m
Delta
Deal found 6/6![Delta logo]()
$1,424
This BusinessClass deal was found by Cheapflights users on 6/7. Clicking the “Pick Dates” 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.
Tue 7/288:38 am
STL
- GMP
2 stops22h 37m
Japan Airlines
Thu 8/208:00 am
GMP
- STL
2 stops22h 23m
Japan Airlines
Deal found 6/7![Japan Airlines logo]()
$1,613
This Delta deal was found by Cheapflights users on 6/6. Clicking the “Pick Dates” 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 7/286:21 am
STL
- ICN
2 stops20h 29m
Delta
Sun 8/167:20 pm
ICN
- STL
1 stop19h 21m
Delta
Deal found 6/6![Delta logo]()
$1,424
This Delta deal was found by Cheapflights users on 6/6. Clicking the “Pick Dates” 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 7/267:55 pm
STL
- ICN
1 stop29h 25m
Delta
Wed 8/127:20 pm
ICN
- STL
1 stop19h 21m
Delta
Deal found 6/6![Delta logo]()
$1,425
This Japan Airlines deal was found by Cheapflights users on 6/9. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Japan Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 7/39:08 am
STL
- GMP
2 stops22h 07m
Multiple Airlines
Fri 7/1012:05 pm
GMP
- STL
2 stops25h 54m
Multiple Airlines
Deal found 6/9![Multiple Airlines logo]()
$1,994
This KAYAK deal was found by Cheapflights users on 6/6. Clicking the “Pick Dates” 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.
Sun 7/268:38 am
STL
- GMP
2 stops22h 37m
Japan Airlines
Wed 8/128:00 am
GMP
- STL
2 stops28h 59m
Japan Airlines
Deal found 6/6![Japan Airlines logo]()
$1,813
This Japan Airlines deal was found by Cheapflights users on 6/6. Clicking the “Pick Dates” 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 7/298:38 am
STL
- GMP
2 stops22h 37m
Japan Airlines
Thu 8/208:00 am
GMP
- STL
2 stops22h 23m
Japan Airlines
Deal found 6/6![Japan Airlines logo]()
$1,826
This KAYAK deal was found by Cheapflights users on 6/8. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure KAYAK is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 7/139:08 am
STL
- GMP
2 stops22h 07m
Japan Airlines
Fri 7/178:00 am
GMP
- STL
2 stops23h 46m
Japan Airlines
Deal found 6/8![Japan Airlines logo]()
$1,886
This KAYAK deal was found by Cheapflights users on 6/6. Clicking the “Pick Dates” 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 10/2910:14 am
STL
- GMP
2 stops21h 51m
Japan Airlines
Sat 11/78:00 am
GMP
- STL
2 stops19h 37m
Japan Airlines
Deal found 6/6![Japan Airlines logo]()
$1,950
Last-minute flights from St. Louis to SeoulDiscover last-minute flight deals from St. Louis to Seoul. Data last updated June 10, 2026 and is based on user searches.
Discover last-minute flight deals from St. Louis to Seoul. Data last updated June 10, 2026 and is based on user searches.
This Booking.com deal was found by Cheapflights users on 6/9. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Booking.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 7/96:02 am
STL
- ICN
2 stops20h 03m
Multiple Airlines
Thu 7/167:05 pm
ICN
- STL
1 stop32h 57m
Multiple Airlines
Deal found 6/9![Multiple Airlines logo]()
$1,413
This Delta deal was found by Cheapflights users on 6/6. Clicking the “Pick Dates” 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 7/267:55 pm
STL
- ICN
1 stop29h 25m
Delta
Wed 8/127:20 pm
ICN
- STL
1 stop19h 21m
Delta
Deal found 6/6![Delta logo]()
$1,425
This Delta deal was found by Cheapflights users on 6/6. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 7/266:58 pm
STL
- ICN
1 stop29h 12m
Delta
Tue 8/187:20 pm
ICN
- STL
1 stop19h 21m
Delta
Deal found 6/6![Delta logo]()
$1,427
This United Airlines deal was found by Cheapflights users on 6/6. Clicking the “Pick Dates” 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 7/267:23 pm
STL
- ICN
1 stop29h 37m
United Airlines
Tue 8/1811:30 am
ICN
- STL
2 stops23h 16m
United Airlines
Deal found 6/6![United Airlines logo]()
$1,435
This Cathay Pacific deal was found by Cheapflights users on 6/7. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Cathay Pacific is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 7/285:13 pm
STL
- ICN
2 stops29h 27m
Multiple Airlines
Tue 8/188:00 am
ICN
- STL
2 stops29h 42m
Multiple Airlines
Deal found 6/7![Multiple Airlines logo]()
$1,343
This Cathay Pacific deal was found by Cheapflights users on 6/7. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Cathay Pacific is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 7/285:13 pm
STL
- ICN
2 stops29h 27m
Multiple Airlines
Thu 8/208:00 am
ICN
- STL
2 stops28h 41m
Multiple Airlines
Deal found 6/7![Multiple Airlines logo]()
$1,418
This KAYAK deal was found by Cheapflights users on 6/6. Clicking the “Pick Dates” 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 7/284:48 pm
STL
- ICN
2 stops21h 32m
Asiana Airlines
Thu 8/204:50 pm
ICN
- STL
2 stops29h 49m
Asiana Airlines
Deal found 6/6![Asiana Airlines logo]()
$1,434
This United Airlines deal was found by Cheapflights users on 6/8. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 7/297:23 pm
STL
- ICN
1 stop18h 57m
United Airlines
Thu 8/204:50 pm
ICN
- STL
2 stops31h 20m
United Airlines
Deal found 6/8![United Airlines logo]()
$1,424
This Delta deal was found by Cheapflights users on 6/8. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 7/301:22 pm
STL
- ICN
1 stop24h 38m
Delta
Thu 8/206:50 pm
ICN
- STL
1 stop27h 18m
Delta
Deal found 6/8![Delta logo]()
$1,420
This United Airlines deal was found by Cheapflights users on 6/10. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 7/306:01 am
STL
- ICN
2 stops32h 19m
United Airlines
Wed 8/1911:30 am
ICN
- STL
2 stops42h 08m
United Airlines
Deal found 6/10![United Airlines logo]()
$1,437
This United Airlines deal was found by Cheapflights users on 6/8. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 7/301:13 pm
STL
- ICN
2 stops25h 07m
United Airlines
Thu 8/204:50 pm
ICN
- STL
2 stops31h 20m
United Airlines
Deal found 6/8![United Airlines logo]()
$1,442
This Cathay Pacific deal was found by Cheapflights users on 6/7. Clicking the “Pick Dates” 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 7/317:22 pm
STL
- ICN
2 stops39h 03m
Multiple Airlines
Thu 8/208:00 am
ICN
- STL
2 stops28h 41m
Multiple Airlines
Deal found 6/7![Multiple Airlines logo]()
$1,438
One-way flights from St. Louis to SeoulSearch for one-way flight options from St. Louis to Seoul. Find affordable one-way fares based on user searches. Data last updated June 10, 2026.
Search for one-way flight options from St. Louis to Seoul. Find affordable one-way fares based on user searches. Data last updated June 10, 2026.
This Kiwi.com deal was found by Cheapflights users on 6/10. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 8/147:10 pm
STL
- ICN
2 stops33h 35m
Multiple Airlines
Deal found 6/10![Multiple Airlines logo]()
$457
This Justfly.com deal was found by Cheapflights users on 6/10. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Justfly.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 8/15:42 pm
STL
- ICN
2 stops35h 03m
WestJet
Deal found 6/10![WestJet logo]()
$611
This Kiwi.com deal was found by Cheapflights users on 6/5. Clicking the “Pick Dates” 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 7/107:10 pm
STL
- ICN
2 stops35h 00m
Multiple Airlines
Deal found 6/5![Multiple Airlines logo]()
$628
This Expedia deal was found by Cheapflights users on 6/6. Clicking the “Pick Dates” 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 11/14:15 pm
STL
- ICN
1 stop35h 10m
Air Canada
Deal found 6/6![Air Canada logo]()
$680
This FlightHub deal was found by Cheapflights users on 6/6. Clicking the “Pick Dates” 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 11/13:11 pm
STL
- GMP
2 stops35h 49m
Multiple Airlines
Deal found 6/6![Multiple Airlines logo]()
$712
This Air Canada deal was found by Cheapflights users on 6/10. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Air Canada is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 8/1412:10 pm
STL
- ICN
1 stop38h 15m
Air Canada
Deal found 6/10![Air Canada logo]()
$723
This oojo deal was found by Cheapflights users on 6/10. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure oojo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 8/15:19 pm
STL
- GMP
2 stops37h 56m
Japan Airlines
Deal found 6/10![Japan Airlines logo]()
$835
This Delta deal was found by Cheapflights users on 6/10. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 8/16:30 am
STL
- ICN
1 stop19h 55m
Delta
Deal found 6/10![Delta logo]()
$839
This BusinessClass deal was found by Cheapflights users on 6/10. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure BusinessClass is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 8/17:23 pm
STL
- ICN
1 stop18h 57m
Asiana Airlines
Deal found 6/10![Asiana Airlines logo]()
$843
This United Airlines deal was found by Cheapflights users on 6/5. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 7/107:23 pm
STL
- ICN
1 stop18h 57m
United Airlines
Deal found 6/5![United Airlines logo]()
$852
This Kiwi.com deal was found by Cheapflights users on 6/5. Clicking the “Pick Dates” 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 7/107:10 pm
STL
- GMP
3 stops50h 10m
Multiple Airlines
Deal found 6/5![Multiple Airlines logo]()
$980
This oojo deal was found by Cheapflights users on 6/5. Clicking the “Pick Dates” 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.
Fri 7/106:55 am
STL
- GMP
2 stops24h 20m
Japan Airlines
Deal found 6/5![Japan Airlines logo]()
$1,016
Find flight deals from St. Louis to Seoul
Discover tips and strategies to find the most affordable flight options for your journey from St. Louis (STL) to Seoul (SEL). Learn about various techniques such as flexible date searches, comparing prices across and setting up price alerts. Use these methods to find the cheapest flights available for your travel needs. Data last updated June 10, 2026.
Most accurate provider | FlightHub 3 stars |
|---|---|
Most trusted provider | FlightHub 3 stars |
Round-trip from | $1,179 (Ovago) |
One-way from | $457 (Kiwi.com) |
Popular in | July |
Cheapest in | February |
Average price | $1,353 |
Cheapflights Fare Finder
Customize your flight search to find flights from St. Louis to Seoul that fit within your specific budget. Explore options based on user searches and filter the results based on your desired price range. Find flights that match your budget for a cost-effective journey. Over the last 7 days, Cheapflights users made 2,558,603 searches. Data last updated June 10, 2026.
Use the filters below to find and compare flights from St. Louis to Seoul that are best for you.
Fly from
Fly to
Route
Depart
Return
Cheapest round-trip
St. LouisIncheon
STL - ICN
STLICN
Lambert-St Louis
Tue 7/28
5:13 pm-12:40 pm
2 stops29h 27m
Incheon Intl
Thu 8/20
8:00 am-10:41 pm
2 stops28h 41m
$1,418
St. LouisIncheon
STL - ICN
STLICN
Lambert-St Louis
Tue 7/28
8:00 am-3:20 pm
1 stop17h 20m
Incheon Intl
Thu 8/20
6:50 pm-8:08 am
1 stop27h 18m
$1,420
Quickest round-trip
St. LouisIncheon
STL - ICN
STLICN
Lambert-St Louis
Thu 9/10
6:29 am-5:30 pm
1 stop21h 01m
Incheon Intl
Mon 9/14
7:35 pm-11:59 pm
1 stop18h 24m
$1,420
St. LouisIncheon
STL - ICN
STLICN
Lambert-St Louis
Tue 11/24
6:59 pm-3:30 pm
1 stop29h 31m
Incheon Intl
Fri 12/4
6:00 pm-11:39 pm
1 stop20h 39m
$1,420
St. LouisIncheon
STL - ICN
STLICN
Lambert-St Louis
Wed 7/29
6:21 am-4:50 pm
2 stops20h 29m
Incheon Intl
Mon 8/17
7:00 pm-8:37 am
2 stops27h 37m
$1,424
St. LouisIncheon
STL - ICN
STLICN
Lambert-St Louis
Tue 7/28
6:21 am-4:50 pm
2 stops20h 29m
Incheon Intl
Sun 8/16
7:20 pm-12:41 am
1 stop19h 21m
$1,424
St. LouisIncheon
STL - ICN
STLICN
Lambert-St Louis
Sun 7/26
7:55 pm-3:20 pm
1 stop29h 25m
Incheon Intl
Wed 8/12
7:20 pm-12:41 am
1 stop19h 21m
$1,425
St. LouisIncheon
STL - ICN
STLICN
Lambert-St Louis
Sun 7/26
7:23 pm-3:00 pm
1 stop29h 37m
Incheon Intl
Wed 8/12
4:50 pm-12:40 pm
2 stops33h 50m
$1,453
St. LouisIncheon
STL - ICN
STLICN
Lambert-St Louis
Sat 8/1
7:23 pm-4:20 am
1 stop18h 57m
Incheon Intl
Mon 8/17
4:50 pm-10:10 am
2 stops31h 20m
$1,472
St. LouisSeoul
STL - GMP
STLGMP
Lambert-St Louis
Thu 9/10
8:30 am-10:40 am
2 stops36h 10m
Seoul Gimpo Intl
Mon 9/14
8:00 am-11:40 pm
2 stops29h 40m
$1,576
Showing 1-10 of 29 resultsSorted by cheapest first
Compare providers for flights from St. Louis to Seoul
Provider information is updated monthly. Please note that these providers often have deals for this flight, but the availability may vary on a day-by-day basis on Cheapflights.
Use the table below to compare price accuracy, trust ratings, and cancellation policies for each provider offering flight deals from St. Louis to Seoul in June.
| Provider | Price Accuracy | Trust Score* |
|---|---|---|
| Price Accuracy1 star | Trust Score*3 stars | |
| Price Accuracy3 stars | Trust Score*3 stars | |
| Price Accuracy3 stars | Trust Score*3 stars | |
| Price Accuracy3 stars | Trust Score*3 stars |
- Most accurate provider: When it comes to deals on St. Louis-Seoul flights, users find the pricing of FlightHub to be most consistent on Cheapflights vs. FlightHub Users can find the same prices on St. Louis-Seoul flight deals on Cheapflights vs. FlightHub >95% of the time. Price accuracy is based on data collected from St. Louis-Seoul flight searches over the past month and is updated monthly.
- Most trusted provider: When it comes to deals on St. Louis-Seoul flights, Cheapflights users trust FlightHub the most. FlightHub has received a user feedback score of 3 out of 3 stars (3 being the best), meaning they have been trusted the most by Cheapflights users looking for St. Louis-Seoul flight deals. Provider user feedback score is based on Cheapflights searches over the past month and is updated monthly.
Best time to book a flight from St. Louis to Seoul
Have a flexible travel schedule? Discover the best time to fly to Seoul from St. Louis with our price prediction graph.
STL-SEL
STL-ICN
STL-GMP
Estimated round-trip price
Rates are based on past data. Find the cheapest month and day to book your flight based on your travel requirements, then search for cheap deals.
Cheapflights Insights
Everything you need to know about your flight from St. Louis to Seoul
STL-SEL
STL-ICN
STL-GMP
What is the cheapest month to book a flight from St. Louis to Seoul?
Currently, March is the cheapest month in which you can book a flight from St. Louis to Seoul (average of $745). Flying from St. Louis to Seoul in June is currently the most expensive (average of $1,083). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.
How much does it cost to fly round-trip from St. Louis to Seoul?
Reviews of airlines servicing Seoul
Get insights into the airlines that provide service to Seoul. Read reviews, discover amenities, and learn about the overall travel experience offered by airlines. Use this information to make informed decisions when choosing an airline for your flight to Seoul. Reviews last updated June 10, 2026.
Read reviews from past customers who have flown Korean Air,Delta, andUnited Airlines from St. Louis to Seoul. Users can see the overall rating for each airline as well as how each is rated in terms of entertainment options, comfort, food, crew/service, and boarding process.
Boarding
8.5
Entertainment
8.2
Overall
8.4
Comfort
8.3
Food
8.1
Crew
8.7
Reviews
1 / 20
10.0
ExcellentChris,Mar 2025
SEA - ICN
Boarding
8.5
Entertainment
8.2
Overall
8.4
Comfort
8.3
Food
8.1
Crew
8.7
Reviews
1 / 20
10.0
ExcellentChris,Mar 2025
SEA - ICN
Boarding
8.5
Entertainment
8.2
Overall
8.4
Comfort
8.3
Food
8.1
Crew
8.7
Reviews
1 / 20
10.0
ExcellentChris,Mar 2025
SEA - ICN
Boarding
8.5
Entertainment
8.2
Overall
8.4
Comfort
8.3
Food
8.1
Crew
8.7
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 Seoul. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.
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St. Louis and Seoul flights
Browse other St. Louis and Seoul flight options. Last updated on June 10, 2026.
Other flights from St. Louis
Browse through other flights departing from St. Louis. Flights are based on user searches made on Cheapflights and were last updated on June 10, 2026.
Popular flight searches
Check out other popular destinations found by fellow travelers in 2026
Other flights to Seoul
Explore flights to Seoul departing from other origins. Flights are based on user searches made on Cheapflights and were last updated on June 10, 2026.
Top 3 airlines flying from St. Louis to Seoul
Discover the top 3 airlines that operate flights from St. Louis to Seoul. Compare their services, reliability, and customer satisfaction ratings to choose the airline that best suits your travel preferences and needs. Over the last 7 days, Cheapflights users made 2,558,603 searches. Data last updated June 10, 2026.
| Airline | Cheapest | Average | Flexibility | On-time |
|---|---|---|---|---|
| Cheapest$846 | Average$957 | FlexibilityNo cancel fee | On-timeN/A | |
| Cheapest$865 | Average$1,164 | FlexibilityNo cancel fee | On-time69% | |
| Cheapest$999 | Average$1,624 | FlexibilityNo cancel fee | On-time81% |