$545+ Cheap flights from Incheon Intl (ICN) to St. Louis (STL)
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 10/6. Fares are subject to change and may not be available on all flights or dates of travel.
ICN — STL
Jul 28 — Aug 41
Round-trip
1 adult, Economy
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Find cheap flights from Incheon Intl to St. Louis 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 Incheon Intl to St. Louis
Cheapest
Best
Last-minute
One-way
Cheapest flights from Incheon Intl to St. LouisExplore the most affordable flight options available from Incheon Intl to St. Louis. Find the lowest fares from popular airlines and budget airlines, with prices last updated on June 28, 2026.
Explore the most affordable flight options available from Incheon Intl to St. Louis. Find the lowest fares from popular airlines and budget airlines, with prices last updated on June 28, 2026.
This American Airlines deal was found by Cheapflights users on 6/24. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 11/206:35 pm
ICN
- STL
1 stop18h 54m
American Airlines
Wed 11/255:17 am
STL
- ICN
1 stop20h 08m
American Airlines
Deal found 6/24![American Airlines logo]()
$1,106
This American Airlines deal was found by Cheapflights users on 6/24. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 11/126:35 pm
ICN
- STL
2 stops28h 52m
American Airlines
Mon 11/165:17 am
STL
- ICN
1 stop20h 08m
American Airlines
Deal found 6/24![American Airlines logo]()
$1,243
This American Airlines deal was found by Cheapflights users on 6/26. Clicking the “Pick Dates” 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 11/196:35 pm
ICN
- STL
1 stop18h 54m
American Airlines
Sun 11/226:45 pm
STL
- ICN
2 stops30h 40m
American Airlines
Deal found 6/26![American Airlines logo]()
$1,246
This Delta deal was found by Cheapflights users on 6/24. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 11/206:45 pm
ICN
- STL
2 stops20h 51m
Delta
Wed 11/257:30 am
STL
- ICN
2 stops19h 25m
Delta
Deal found 6/24![Delta logo]()
$1,251
This EVA Air deal was found by Cheapflights users on 6/24. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure EVA Air is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 11/207:45 pm
ICN
- STL
3 stops34h 00m
Multiple Airlines
Wed 11/253:24 pm
STL
- ICN
2 stops28h 06m
Multiple Airlines
Deal found 6/24![Multiple Airlines logo]()
$1,486
This Air Canada deal was found by Cheapflights users on 6/24. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Air Canada is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 7/95:45 pm
ICN
- STL
2 stops34h 17m
Air Canada
Sun 7/122:40 pm
STL
- ICN
2 stops35h 25m
Air Canada
Deal found 6/24![Air Canada logo]()
$1,491
This Viajes Falabella deal was found by Cheapflights users on 6/27. 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 Viajes Falabella is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 8/1110:25 am
ICN
- STL
2 stops23h 59m
Multiple Airlines
Tue 8/188:55 am
STL
- ICN
1 stop18h 35m
Multiple Airlines
Deal found 6/27![Multiple Airlines logo]()
$1,543
Best flights from Incheon Intl to St. LouisDiscover carefully curated flight deals from Incheon Intl to St. Louis that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated June 28, 2026.
Discover carefully curated flight deals from Incheon Intl to St. Louis that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated June 28, 2026.
This American Airlines deal was found by Cheapflights users on 6/24. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 11/126:35 pm
ICN
- STL
2 stops28h 52m
American Airlines
Mon 11/165:17 am
STL
- ICN
1 stop20h 08m
American Airlines
Deal found 6/24![American Airlines logo]()
$1,243
This American Airlines deal was found by Cheapflights users on 6/25. Clicking the “Pick Dates” 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 11/196:35 pm
ICN
- STL
1 stop18h 54m
American Airlines
Sun 11/228:40 am
STL
- ICN
2 stops40h 45m
American Airlines
Deal found 6/25![American Airlines logo]()
$1,243
Last-minute flights from Incheon Intl to St. LouisDiscover last-minute flight deals from Incheon Intl to St. Louis. Data last updated June 28, 2026 and is based on user searches.
Discover last-minute flight deals from Incheon Intl to St. Louis. Data last updated June 28, 2026 and is based on user searches.
This Air Canada deal was found by Cheapflights users on 6/24. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Air Canada is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 7/95:45 pm
ICN
- STL
2 stops34h 17m
Air Canada
Sun 7/122:40 pm
STL
- ICN
2 stops35h 25m
Air Canada
Deal found 6/24![Air Canada logo]()
$1,491
This Mytrip deal was found by Cheapflights users on 6/24. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 7/99:15 pm
ICN
- STL
3 stops35h 42m
Multiple Airlines
Sun 7/1212:10 pm
STL
- ICN
2 stops37h 55m
Multiple Airlines
Deal found 6/24![Multiple Airlines logo]()
$2,017
This Air Canada deal was found by Cheapflights users on 6/24. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Air Canada is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 7/177:05 pm
ICN
- STL
2 stops27h 34m
Air Canada
Sat 7/252:40 pm
STL
- ICN
2 stops35h 25m
Air Canada
Deal found 6/24![Air Canada logo]()
$1,579
This Mytrip deal was found by Cheapflights users on 6/24. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 7/178:45 pm
ICN
- STL
3 stops31h 17m
Multiple Airlines
Sat 7/258:55 am
STL
- ICN
2 stops24h 10m
Multiple Airlines
Deal found 6/24![Multiple Airlines logo]()
$2,004
This EVA Air deal was found by Cheapflights users on 6/24. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure EVA Air is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 7/1812:00 pm
ICN
- STL
2 stops37h 10m
Multiple Airlines
Sat 7/257:56 pm
STL
- ICN
2 stops25h 04m
Multiple Airlines
Deal found 6/24![Multiple Airlines logo]()
$1,655
This Air Canada deal was found by Cheapflights users on 6/24. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Air Canada is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 7/187:05 pm
ICN
- STL
1 stop32h 57m
Air Canada
Sat 7/258:55 am
STL
- ICN
1 stop18h 35m
Air Canada
Deal found 6/24![Air Canada logo]()
$1,838
One-way flights from Incheon Intl to St. LouisSearch for one-way flight options from Incheon Intl to St. Louis. Find affordable one-way fares based on user searches. Data last updated June 28, 2026.
Search for one-way flight options from Incheon Intl to St. Louis. Find affordable one-way fares based on user searches. Data last updated June 28, 2026.
This Kiwi.com deal was found by Cheapflights users on 6/24. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 10/610:35 pm
ICN
- STL
3 stops49h 05m
Multiple Airlines
Deal found 6/24![Multiple Airlines logo]()
$545
This Kiwi.com deal was found by Cheapflights users on 6/24. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 10/11:35 pm
ICN
- STL
3 stops58h 05m
Multiple Airlines
Deal found 6/24![Multiple Airlines logo]()
$579
This Kiwi.com deal was found by Cheapflights users on 6/24. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 10/49:10 pm
ICN
- STL
3 stops50h 30m
Multiple Airlines
Deal found 6/24![Multiple Airlines logo]()
$597
This Kiwi.com deal was found by Cheapflights users on 6/24. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 9/307:20 am
ICN
- STL
3 stops40h 20m
Multiple Airlines
Deal found 6/24![Multiple Airlines logo]()
$606
This Kiwi.com deal was found by Cheapflights users on 6/24. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 10/77:20 am
ICN
- STL
3 stops40h 20m
Multiple Airlines
Deal found 6/24![Multiple Airlines logo]()
$608
This Kiwi.com deal was found by Cheapflights users on 6/24. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 8/227:20 am
ICN
- STL
3 stops46h 51m
Multiple Airlines
Deal found 6/24![Multiple Airlines logo]()
$612
This Kiwi.com deal was found by Cheapflights users on 6/24. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 10/58:30 pm
ICN
- STL
3 stops53h 21m
Multiple Airlines
Deal found 6/24![Multiple Airlines logo]()
$613
This Kiwi.com deal was found by Cheapflights users on 6/24. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 9/18:30 pm
ICN
- STL
3 stops57h 41m
Multiple Airlines
Deal found 6/24![Multiple Airlines logo]()
$614
This Kiwi.com deal was found by Cheapflights users on 6/24. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 8/177:20 am
ICN
- STL
3 stops48h 30m
Multiple Airlines
Deal found 6/24![Multiple Airlines logo]()
$633
This Kiwi.com deal was found by Cheapflights users on 6/24. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 8/208:30 pm
ICN
- STL
3 stops57h 41m
Multiple Airlines
Deal found 6/24![Multiple Airlines logo]()
$636
This Kiwi.com deal was found by Cheapflights users on 6/27. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 9/48:30 pm
ICN
- STL
3 stops57h 41m
Multiple Airlines
Deal found 6/27![Multiple Airlines logo]()
$646
Find flight deals from Incheon Intl to St. Louis
Discover tips and strategies to find the most affordable flight options for your journey from Incheon Intl (ICN) to St. Louis (STL). 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 28, 2026.
Most accurate provider | FlightHub 3 stars |
|---|---|
Most trusted provider | FlightHub 3 stars |
Round-trip from | $1,491 (Air Canada) |
One-way from | $545 (Kiwi.com) |
Popular in | July |
Cheapest in | November |
Average price | $1,074 |
Cheapflights Fare Finder
Customize your flight search to find flights from Incheon Intl to St. Louis 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 28, 2026.
Use the filters below to find and compare flights from Incheon Intl Airport to St. Louis that are best for you.
Fly from
Fly to
Route
Depart
Return
Cheapest round-trip
Quickest round-trip
IncheonSt. Louis
ICN - STL
ICNSTL
Incheon Intl
Thu 11/12
6:35 pm-8:27 am
2 stops28h 52m
Lambert-St Louis
Mon 11/16
5:17 am-4:25 pm
1 stop20h 08m
$1,243
IncheonSt. Louis
ICN - STL
ICNSTL
Incheon Intl
Thu 11/19
6:35 pm-10:29 pm
1 stop18h 54m
Lambert-St Louis
Sun 11/22
8:40 am-4:25 pm
2 stops40h 45m
$1,243
Cheapest one-way
IncheonSt. Louis
ICN - STL
ICNSTL
Incheon Intl
Thu 8/13
7:10 am-6:15 pm
3 stops49h 05m
$738
IncheonSt. Louis
ICN - STL
ICNSTL
Incheon Intl
Sun 10/4
7:20 am-11:59 pm
2 stops54h 39m
$797
IncheonSt. Louis
ICN - STL
ICNSTL
Incheon Intl
Fri 9/4
7:15 pm-5:50 pm
2 stops36h 35m
$811
IncheonSt. Louis
ICN - STL
ICNSTL
Incheon Intl
Tue 10/6
1:00 pm-11:59 pm
2 stops24h 59m
$838
IncheonSt. Louis
ICN - STL
ICNSTL
Incheon Intl
Wed 10/7
7:40 pm-11:50 am
1 stop30h 10m
$926
IncheonSt. Louis
ICN - STL
ICNSTL
Incheon Intl
Fri 10/2
7:40 pm-10:34 am
1 stop28h 54m
$926
IncheonSt. Louis
ICN - STL
ICNSTL
Incheon Intl
Mon 10/5
7:20 pm-6:56 pm
1 stop37h 36m
$926
IncheonSt. Louis
ICN - STL
ICNSTL
Incheon Intl
Wed 8/19
12:00 pm-11:59 pm
2 stops49h 59m
$979
Showing 1-10 of 11 resultsSorted by cheapest first
Compare providers for flights from Incheon Intl to St. Louis
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 Incheon Intl to St. Louis in June.
| Provider | Price Accuracy | Trust Score* |
|---|---|---|
| Price Accuracy3 stars | Trust Score*3 stars | |
| Price Accuracy3 stars | Trust Score*3 stars | |
| Price Accuracy2 stars | Trust Score*3 stars |
- Most accurate provider: When it comes to deals on Incheon Intl Airport-St. Louis flights, users find the pricing of FlightHub to be most consistent on Cheapflights vs. FlightHub Users can find the same prices on Incheon Intl Airport-St. Louis flight deals on Cheapflights vs. FlightHub >95% of the time. Price accuracy is based on data collected from Incheon Intl Airport-St. Louis flight searches over the past month and is updated monthly.
- Most trusted provider: When it comes to deals on Incheon Intl Airport-St. Louis 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 Incheon Intl Airport-St. Louis 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 Incheon Intl to St. Louis
Have a flexible travel schedule? Discover the best time to fly to St. Louis from Incheon Intl with our price prediction graph.
ICN-STL
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.
Related info for your journey
Find useful and relevant information for your journey from Incheon Intl to St. Louis. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.
Traveling to a place near St. Louis?
Book flights to St. Louis if you plan to visit one of these locationsEdwardsville
O'Fallon
Fenton
Swansea
Fairview Heights
Eureka
Maryland Heights
Collinsville
Wentzville
Glencoe
Chesterfield
Alton
Farmington
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