$575+ Cheap flights from St. Louis (STL) to South Korea
This is the cheapest round-trip flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 1/5. Fares are subject to change and may not be available on all flights or dates of travel.
STL — ICN
Oct 8 — Oct 151
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 September 8, 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 September 8, 2026.
This flugladen.de deal was found by Cheapflights users on 9/2. Clicking the “Pick Dates” 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.
Sun 9/132:40 pm -
1 stop36h 50m
Mon 9/287:05 pm -
1 stop32h 55m
Deal found 9/2![Air Canada logo]()
$1,062
This American Airlines deal was found by Cheapflights users on 9/2. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 9/135:45 pm -
2 stops32h 00m
Mon 9/285:50 pm -
1 stop19h 53m
Deal found 9/2![American Airlines logo]()
$1,068
This American Airlines deal was found by Cheapflights users on 9/4. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 9/105:43 am -
1 stop20h 02m
Mon 9/215:50 pm -
1 stop19h 53m
Deal found 9/4![American Airlines logo]()
$1,079
This Cathay Pacific deal was found by Cheapflights users on 9/7. 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.
Mon 10/266:04 am -
2 stops28h 36m
Wed 11/257:35 pm -
2 stops35h 59m
Deal found 9/7![Multiple Airlines logo]()
$1,091
This Gurufare deal was found by Cheapflights users on 9/4. Clicking the “Pick Dates” 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 10/1412:47 pm -
2 stops40h 18m
Mon 10/261:55 am -
2 stops36h 24m
Deal found 9/4![Cathay Pacific logo]()
$1,097
This Air Canada deal was found by Cheapflights users on 9/2. Clicking the “Pick Dates” 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 9/248:55 am -
1 stop18h 35m
Mon 9/287:05 pm -
1 stop32h 55m
Deal found 9/2![Air Canada logo]()
$1,104
This Alaska Airlines deal was found by Cheapflights users on 9/6. 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 9/246:29 am -
1 stop21h 01m
Mon 9/287:35 pm -
1 stop18h 24m
Deal found 9/6![Alaska Airlines logo]()
$1,108
This KAYAK deal was found by Cheapflights users on 9/5. 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 KAYAK is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 10/13:34 pm -
2 stops37h 31m
Sun 11/17:35 pm -
2 stops37h 42m
Deal found 9/5![Cathay Pacific logo]()
$1,123
This American Airlines deal was found by Cheapflights users on 9/2. Clicking the “Pick Dates” 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 9/167:00 am -
1 stop18h 45m
Fri 9/255:50 pm -
1 stop19h 53m
Deal found 9/2![American Airlines logo]()
$1,124
This BusinessClass deal was found by Cheapflights users on 9/4. Clicking the “Pick Dates” 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.
Mon 10/197:10 pm -
2 stops39h 15m
Mon 10/263:00 pm -
2 stops41h 16m
Deal found 9/4![Cathay Pacific logo]()
$1,126
This Orbitz deal was found by Cheapflights users on 9/5. 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 Orbitz is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 9/106:00 am -
2 stops25h 15m
Thu 9/178:00 am -
2 stops40h 18m
Deal found 9/5![Japan Airlines logo]()
$1,341
This Japan Airlines deal was found by Cheapflights users on 9/2. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Japan Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 9/137:27 am -
2 stops23h 48m
Mon 9/288:00 am -
2 stops26h 44m
Deal found 9/2![Multiple Airlines logo]()
$1,383
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 September 8, 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 September 8, 2026.
This Cathay Pacific deal was found by Cheapflights users on 9/7. 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.
Mon 10/266:04 am -
2 stops28h 36m
Wed 11/257:35 pm -
2 stops35h 59m
Deal found 9/7![Multiple Airlines logo]()
$1,091
This Delta deal was found by Cheapflights users on 9/5. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 10/146:00 am -
1 stop18h 10m
Tue 10/277:25 pm -
1 stop18h 29m
Deal found 9/5![Delta logo]()
$1,196
This Japan Airlines deal was found by Cheapflights users on 9/2. Clicking the “Pick Dates” 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 10/226:32 am -
2 stops38h 08m
Mon 10/268:15 am -
2 stops29h 31m
Deal found 9/2![Japan Airlines logo]()
$1,578
This Cathay Pacific deal was found by Cheapflights users on 9/2. Clicking the “Pick Dates” 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 11/242:48 pm -
2 stops32h 02m
Thu 12/31:55 am -
2 stops29h 48m
Deal found 9/2![Multiple Airlines logo]()
$1,141
This Delta deal was found by Cheapflights users on 9/5. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 10/76:00 am -
1 stop18h 10m
Fri 10/236:50 pm -
1 stop19h 04m
Deal found 9/5![Delta logo]()
$1,196
This Delta deal was found by Cheapflights users on 9/4. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 10/199:47 am -
1 stop17h 33m
Mon 10/265:40 pm -
1 stop17h 43m
Deal found 9/4![Delta logo]()
$1,196
This Delta deal was found by Cheapflights users on 9/3. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 10/266:47 am -
1 stop20h 03m
Wed 11/259:35 am -
1 stop25h 54m
Deal found 9/3![Delta logo]()
$1,196
This Delta deal was found by Cheapflights users on 9/7. 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.
Thu 10/229:47 am -
1 stop17h 33m
Sun 10/258:35 pm -
1 stop16h 46m
Deal found 9/7![Delta logo]()
$1,196
This Expedia deal was found by Cheapflights users on 9/4. Clicking the “Pick Dates” 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.
Fri 2/263:24 pm -
2 stops35h 16m
Sat 6/267:10 pm -
2 stops34h 01m
Deal found 9/4![Multiple Airlines logo]()
$1,451
This Justfly.com deal was found by Cheapflights users on 9/4. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Justfly.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 2/111:25 am -
2 stops32h 20m
Mon 2/158:15 am -
2 stops30h 33m
Deal found 9/4![Japan Airlines logo]()
$1,614
This Delta deal was found by Cheapflights users on 9/6. 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.
Mon 10/56:54 pm -
1 stop29h 16m
Wed 11/49:35 am -
1 stop26h 16m
Deal found 9/6![Delta logo]()
$1,196
This Japan Airlines deal was found by Cheapflights users on 9/6. 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 10/226:32 am -
2 stops24h 43m
Thu 10/298:15 am -
2 stops22h 38m
Deal found 9/6![Multiple Airlines logo]()
$1,491
This FlightHub deal was found by Cheapflights users on 9/5. 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 FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 10/226:32 am -
2 stops24h 43m
Sun 10/257:40 pm -
2 stops35h 13m
Deal found 9/5![Japan Airlines logo]()
$1,657
This Expedia deal was found by Cheapflights users on 9/3. Clicking the “Pick Dates” 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 10/186:32 am -
2 stops24h 43m
Sun 10/2512:15 pm -
2 stops25h 31m
Deal found 9/3![Japan Airlines logo]()
$1,724
This Japan Airlines deal was found by Cheapflights users on 9/3. Clicking the “Pick Dates” 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 10/226:32 am -
2 stops24h 43m
Sun 10/258:15 am -
2 stops22h 38m
Deal found 9/3![Multiple Airlines logo]()
$1,628
This Mytrip deal was found by Cheapflights users on 9/5. 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 Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 10/205:36 pm -
3 stops37h 59m
Tue 10/271:50 pm -
3 stops24h 09m
Deal found 9/5![Multiple Airlines logo]()
$4,374
Last-minute flights from St. Louis to South KoreaDiscover last-minute flight deals from St. Louis to South Korea. Data last updated September 8, 2026 and is based on user searches.
Discover last-minute flight deals from St. Louis to South Korea. Data last updated September 8, 2026 and is based on user searches.
This American Airlines deal was found by Cheapflights users on 9/4. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 9/105:43 am -
1 stop20h 02m
Mon 9/215:50 pm -
1 stop19h 53m
Deal found 9/4![American Airlines logo]()
$1,079
This Orbitz deal was found by Cheapflights users on 9/5. 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 Orbitz is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 9/106:00 am -
2 stops25h 15m
Thu 9/178:00 am -
2 stops40h 18m
Deal found 9/5![Japan Airlines logo]()
$1,341
This flugladen.de deal was found by Cheapflights users on 9/2. Clicking the “Pick Dates” 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.
Sun 9/132:40 pm -
1 stop36h 50m
Mon 9/287:05 pm -
1 stop32h 55m
Deal found 9/2![Air Canada logo]()
$1,062
This American Airlines deal was found by Cheapflights users on 9/2. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 9/135:45 pm -
2 stops32h 00m
Mon 9/285:50 pm -
1 stop19h 53m
Deal found 9/2![American Airlines logo]()
$1,068
This Japan Airlines deal was found by Cheapflights users on 9/2. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Japan Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 9/137:27 am -
2 stops23h 48m
Mon 9/288:00 am -
2 stops26h 44m
Deal found 9/2![Multiple Airlines logo]()
$1,383
This American Airlines deal was found by Cheapflights users on 9/2. Clicking the “Pick Dates” 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 9/167:00 am -
1 stop18h 45m
Fri 9/255:50 pm -
1 stop19h 53m
Deal found 9/2![American Airlines logo]()
$1,124
This Air Canada deal was found by Cheapflights users on 9/2. Clicking the “Pick Dates” 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 9/248:55 am -
1 stop18h 35m
Mon 9/287:05 pm -
1 stop32h 55m
Deal found 9/2![Air Canada logo]()
$1,104
This Alaska Airlines deal was found by Cheapflights users on 9/6. 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 9/246:29 am -
1 stop21h 01m
Mon 9/287:35 pm -
1 stop18h 24m
Deal found 9/6![Alaska Airlines logo]()
$1,108
This KAYAK deal was found by Cheapflights users on 9/5. 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 KAYAK is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 10/13:34 pm -
2 stops37h 31m
Sun 11/17:35 pm -
2 stops37h 42m
Deal found 9/5![Cathay Pacific logo]()
$1,123
This Gurufare deal was found by Cheapflights users on 9/4. Clicking the “Pick Dates” 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 10/1412:47 pm -
2 stops40h 18m
Mon 10/261:55 am -
2 stops36h 24m
Deal found 9/4![Cathay Pacific logo]()
$1,097
This BusinessClass deal was found by Cheapflights users on 9/4. Clicking the “Pick Dates” 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.
Mon 10/197:10 pm -
2 stops39h 15m
Mon 10/263:00 pm -
2 stops41h 16m
Deal found 9/4![Cathay Pacific logo]()
$1,126
This Cathay Pacific deal was found by Cheapflights users on 9/7. 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.
Mon 10/266:04 am -
2 stops28h 36m
Wed 11/257:35 pm -
2 stops35h 59m
Deal found 9/7![Multiple Airlines logo]()
$1,091
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 September 8, 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 September 8, 2026.
This Cathay Pacific deal was found by Cheapflights users on 9/7. 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 1/56:02 am -
2 stops39h 43m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/7![Multiple Airlines logo]()
$575
This Delta deal was found by Cheapflights users on 9/7. 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.
Wed 1/66:59 pm -
1 stop29h 31m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/7![Delta logo]()
$582
This FlightHub deal was found by Cheapflights users on 9/7. 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 FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 1/49:20 am -
2 stops37h 30m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/7![Cathay Pacific logo]()
$651
This Kiwi.com deal was found by Cheapflights users on 9/7. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 1/42:59 pm -
3 stops53h 51m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/7![Multiple Airlines logo]()
$738
This Delta deal was found by Cheapflights users on 9/7. 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.
Mon 1/43:40 pm -
1 stop23h 05m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/7![Delta logo]()
$802
This Kiwi.com deal was found by Cheapflights users on 9/5. 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.
Wed 11/188:10 am -
3 stops54h 20m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/5![Multiple Airlines logo]()
$2,119
This Kiwi.com deal was found by Cheapflights users on 9/5. 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.
Wed 11/186:40 am -
1 stop19h 10m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/5![Korean Air logo]()
$3,864
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 September 8, 2026.
Most accurate provider | FlightHub 3 stars |
|---|---|
Most trusted provider | FlightHub 3 stars |
Round-trip from | $1,079 (American Airlines) |
One-way from | $575 (Cathay Pacific) |
Popular in | December |
Cheapest in | February |
Average price | $1,205 |
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 7,457,451 searches. Data last updated September 8, 2026.
Use the filters below to find and compare flights from St. Louis to South Korea that are best for you.
Fly from
Fly to
Route
Depart
Return
Cheapest round-trip
St. LouisIncheon
STL Lambert-St Louis - ICN Incheon Intl
STLICN
Lambert-St Louis
Mon 1/4
9:20 am-1:50 pm
2 stops37h 30m
Incheon Intl
Wed 12/31
12:00 am-9:00 am
Nonstop0h 00m
$651
St. LouisIncheon
STL Lambert-St Louis - ICN Incheon Intl
STLICN
Lambert-St Louis
Tue 1/5
3:54 pm-12:45 pm
3 stops53h 51m
Incheon Intl
Wed 12/31
12:00 am-9:00 am
Nonstop0h 00m
$723
St. LouisIncheon
STL Lambert-St Louis - ICN Incheon Intl
STLICN
Lambert-St Louis
Mon 1/4
2:59 pm-11:50 am
3 stops53h 51m
Incheon Intl
Wed 12/31
12:00 am-9:00 am
Nonstop0h 00m
$738
St. LouisIncheon
STL Lambert-St Louis - ICN Incheon Intl
STLICN
Lambert-St Louis
Mon 1/4
3:40 pm-5:45 am
1 stop23h 05m
Incheon Intl
Wed 12/31
12:00 am-9:00 am
Nonstop0h 00m
$802
Quickest round-trip
St. LouisIncheon
STL Lambert-St Louis - ICN Incheon Intl
STLICN
Lambert-St Louis
Tue 1/5
6:00 am-3:30 pm
1 stop18h 30m
Incheon Intl
Wed 12/31
12:00 am-9:00 am
Nonstop0h 00m
$802
St. LouisIncheon
STL Lambert-St Louis - ICN Incheon Intl
STLICN
Lambert-St Louis
Mon 10/26
6:04 am-12:40 am
2 stops28h 36m
Incheon Intl
Wed 11/25
7:35 pm-4:34 pm
2 stops35h 59m
$1,091
St. LouisIncheon
STL Lambert-St Louis - ICN Incheon Intl
STLICN
Lambert-St Louis
Tue 11/24
2:48 pm-1:50 pm
2 stops32h 02m
Incheon Intl
Thu 12/3
1:55 am-4:43 pm
2 stops29h 48m
$1,141
St. LouisIncheon
STL Lambert-St Louis - ICN Incheon Intl
STLICN
Lambert-St Louis
Wed 10/14
6:00 am-2:10 pm
1 stop18h 10m
Incheon Intl
Tue 10/27
7:25 pm-11:54 pm
1 stop18h 29m
$1,196
St. LouisIncheon
STL Lambert-St Louis - ICN Incheon Intl
STLICN
Lambert-St Louis
Wed 10/7
6:00 am-2:10 pm
1 stop18h 10m
Incheon Intl
Fri 10/23
6:50 pm-11:54 pm
1 stop19h 04m
$1,196
St. LouisIncheon
STL Lambert-St Louis - ICN Incheon Intl
STLICN
Lambert-St Louis
Mon 10/19
9:47 am-5:20 pm
1 stop17h 33m
Incheon Intl
Mon 10/26
5:40 pm-9:23 pm
1 stop17h 43m
$1,196
Showing 1-10 of 22 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-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-CJU
What is the cheapest month to book a flight from St. Louis to South Korea?
Currently, February is the cheapest month in which you can book a flight from St. Louis to South Korea (average of $865). Flying from St. Louis to South Korea in July is currently the most expensive (average of $1,536). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.
Reviews of airlines servicing South Korea
Get insights into the airlines that provide service to South Korea. Read reviews, discover amenities, and learn about the overall travel experience offered by airlines. Use this information to make informed decisions when choosing an airline for your flight to South Korea. Reviews last updated September 8, 2026.
Get a feel of what it's like to fly with Korean Air,Delta, andUnited Airlines from St. Louis to South Korea by reading reviews from past customers. Users have also rated airlines in terms of entertainment options, comfort, food, crew/service, and boarding process.
Boarding
8.5
Overall
8.4
Crew
8.7
Entertainment
8.2
Comfort
8.3
Food
8.1
Reviews
1 / 20
10.0
ExcellentChris,Mar 2025
SEA - ICN
Boarding
8.5
Overall
8.4
Crew
8.7
Entertainment
8.2
Comfort
8.3
Food
8.1
Reviews
1 / 20
10.0
ExcellentChris,Mar 2025
SEA - ICN
Boarding
8.5
Overall
8.4
Crew
8.7
Entertainment
8.2
Comfort
8.3
Food
8.1
Reviews
1 / 20
10.0
ExcellentChris,Mar 2025
SEA - ICN
Boarding
8.5
Overall
8.4
Crew
8.7
Entertainment
8.2
Comfort
8.3
Food
8.1
Reviews
1 / 20
10.0
ExcellentChris,Mar 2025
SEA - ICN
Boarding
8.5
Overall
8.4
Crew
8.7
Entertainment
8.2
Comfort
8.3
Food
8.1
Reviews
1 / 20
10.0
ExcellentChris,Mar 2025
SEA - ICN
Related info for your journey
Find useful and relevant information for your journey from St. Louis to South Korea. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.
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Alternative routes for St. Louis to South Korea
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 September 8, 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 7,457,451 searches. Data last updated September 8, 2026.
| Airline | Cheapest | Average | Flexibility | On-time |
|---|---|---|---|---|
| Cheapest$846 | Average$1,111 | FlexibilityNo cancel fee | On-timeN/A | |
| Cheapest$865 | Average$1,181 | FlexibilityNo cancel fee | On-time69% | |
| Cheapest$999 | Average$1,624 | FlexibilityNo cancel fee | On-time81% | |
| Cheapest$1,083 | Average$1,287 | FlexibilityNo cancel fee | On-time67% |