$566+ Cheap flights from Incheon Intl (ICN) to St. Louis (STL)
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 11/8. Fares are subject to change and may not be available on all flights or dates of travel.
ICN — STL
Oct 27 — Nov 31
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
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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 September 27, 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 September 27, 2026.
This American Airlines deal was found by Cheapflights users on 9/23. 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 10/225:50 pm -
2 stops20h 29m
Thu 11/57:06 pm -
1 stop30h 39m
Deal found 9/23![American Airlines logo]()
$1,182
This American Airlines deal was found by Cheapflights users on 9/25. 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.
Tue 11/106:50 pm -
1 stop16h 29m
Tue 11/176:00 am -
1 stop19h 45m
Deal found 9/25![American Airlines logo]()
$1,188
This Cathay Pacific deal was found by Cheapflights users on 9/25. 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 Cathay Pacific is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 11/91:55 am -
2 stops33h 47m
Tue 11/176:20 pm -
2 stops36h 05m
Deal found 9/25![Multiple Airlines logo]()
$1,212
This Cathay Pacific deal was found by Cheapflights users on 9/23. 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.
Thu 10/228:00 am -
2 stops26h 57m
Thu 11/56:20 pm -
2 stops33h 15m
Deal found 9/23![Multiple Airlines logo]()
$1,219
This American Airlines deal was found by Cheapflights users on 9/25. 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.
Sun 11/86:50 pm -
1 stop19h 43m
Sun 11/292:48 pm -
1 stop34h 57m
Deal found 9/25![American Airlines logo]()
$1,250
This WhyPayMore deal was found by Cheapflights users on 9/23. 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 WhyPayMore is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 12/226:55 pm -
2 stops35h 31m
Tue 1/124:05 pm -
2 stops34h 05m
Deal found 9/23![Air Canada logo]()
$1,257
This American Airlines deal was found by Cheapflights users on 9/25. 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.
Fri 12/186:50 pm -
2 stops28h 39m
Fri 1/155:29 am -
1 stop19h 56m
Deal found 9/25![American Airlines logo]()
$1,272
This American Airlines deal was found by Cheapflights users on 9/24. 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 11/56:50 pm -
1 stop18h 09m
Mon 11/91:15 pm -
2 stops36h 30m
Deal found 9/24![American Airlines logo]()
$1,278
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 September 27, 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 September 27, 2026.
This Cathay Pacific deal was found by Cheapflights users on 9/23. 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.
Thu 10/228:00 am -
2 stops26h 57m
Thu 11/56:20 pm -
2 stops33h 15m
Deal found 9/23![Multiple Airlines logo]()
$1,219
This WhyPayMore deal was found by Cheapflights users on 9/23. 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 WhyPayMore is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 12/228:10 pm -
1 stop34h 16m
Tue 1/124:05 pm -
2 stops34h 05m
Deal found 9/23![Air Canada logo]()
$1,278
This American Airlines deal was found by Cheapflights users on 9/25. 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 11/56:50 pm -
1 stop18h 09m
Mon 11/91:15 pm -
2 stops36h 30m
Deal found 9/25![American Airlines logo]()
$1,289
This Cathay Pacific deal was found by Cheapflights users on 9/24. 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 Cathay Pacific is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 11/57:35 pm -
2 stops36h 08m
Mon 11/97:26 am -
2 stops38h 19m
Deal found 9/24![Cathay Pacific logo]()
$1,299
This American Airlines deal was found by Cheapflights users on 9/25. 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.
Fri 12/186:50 pm -
2 stops28h 39m
Fri 1/156:08 pm -
2 stops31h 17m
Deal found 9/25![American Airlines logo]()
$1,327
Last-minute flights from Incheon Intl to St. LouisDiscover last-minute flight deals from Incheon Intl to St. Louis. Data last updated September 27, 2026 and is based on user searches.
Discover last-minute flight deals from Incheon Intl to St. Louis. Data last updated September 27, 2026 and is based on user searches.
This American Airlines deal was found by Cheapflights users on 9/23. 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 10/225:50 pm -
2 stops20h 29m
Thu 11/57:06 pm -
1 stop30h 39m
Deal found 9/23![American Airlines logo]()
$1,182
This Cathay Pacific deal was found by Cheapflights users on 9/23. 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.
Thu 10/228:00 am -
2 stops26h 57m
Thu 11/56:20 pm -
2 stops33h 15m
Deal found 9/23![Multiple Airlines logo]()
$1,219
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 September 27, 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 September 27, 2026.
This Kiwi.com deal was found by Cheapflights users on 9/25. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 11/88:40 pm -
3 stops36h 00m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/25![Multiple Airlines logo]()
$566
This Kiwi.com deal was found by Cheapflights users on 9/24. 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 10/318:40 pm -
3 stops60h 00m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/24![Multiple Airlines logo]()
$571
This Kiwi.com deal was found by Cheapflights users on 9/23. 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 10/187:15 pm -
2 stops38h 00m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/23![Multiple Airlines logo]()
$635
This Kiwi.com deal was found by Cheapflights users on 9/25. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 11/99:30 pm -
2 stops56h 53m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/25![Multiple Airlines logo]()
$663
This Kiwi.com deal was found by Cheapflights users on 9/23. 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 10/176:00 pm -
2 stops31h 31m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/23![Multiple Airlines logo]()
$690
This Kiwi.com deal was found by Cheapflights users on 9/24. 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.
Fri 1/157:45 pm -
2 stops29h 35m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/24![Multiple Airlines logo]()
$700
This Kiwi.com deal was found by Cheapflights users on 9/24. 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 1/141:05 pm -
3 stops36h 15m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/24![Multiple Airlines logo]()
$726
This Kiwi.com deal was found by Cheapflights users on 9/24. 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 1/137:45 pm -
2 stops53h 35m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/24![Multiple Airlines logo]()
$780
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 September 27, 2026.
Most accurate provider | FlightHub 3 stars |
|---|---|
Most trusted provider | FlightHub 3 stars |
Round-trip from | $1,182 (American Airlines) |
One-way from | $566 (Kiwi.com) |
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 7,457,451 searches. Data last updated September 27, 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
IncheonSt. Louis
ICN Incheon Intl - STL Lambert-St Louis
ICNSTL
Incheon Intl
Sun 11/8
8:40 pm-11:22 pm
2 stops41h 42m
Lambert-St Louis
Wed 12/31
12:00 am-3:00 pm
Nonstop0h 00m
$580
IncheonSt. Louis
ICN Incheon Intl - STL Lambert-St Louis
ICNSTL
Incheon Intl
Sun 10/18
7:15 pm-7:15 pm
2 stops38h 00m
Lambert-St Louis
Wed 12/31
12:00 am-3:00 pm
Nonstop0h 00m
$635
IncheonSt. Louis
ICN Incheon Intl - STL Lambert-St Louis
ICNSTL
Incheon Intl
Thu 1/14
1:05 pm-10:20 am
3 stops36h 15m
Lambert-St Louis
Wed 12/31
12:00 am-3:00 pm
Nonstop0h 00m
$726
IncheonSt. Louis
ICN Incheon Intl - STL Lambert-St Louis
ICNSTL
Incheon Intl
Sat 1/16
8:40 pm-10:48 am
3 stops29h 08m
Lambert-St Louis
Wed 12/31
12:00 am-3:00 pm
Nonstop0h 00m
$819
IncheonSt. Louis
ICN Incheon Intl - STL Lambert-St Louis
ICNSTL
Incheon Intl
Fri 1/15
6:50 pm-6:30 pm
1 stop38h 40m
Lambert-St Louis
Wed 12/31
12:00 am-3:00 pm
Nonstop0h 00m
$900
IncheonSt. Louis
ICN Incheon Intl - STL Lambert-St Louis
ICNSTL
Incheon Intl
Sun 11/8
6:50 pm-11:33 pm
1 stop19h 43m
Lambert-St Louis
Wed 12/31
12:00 am-3:00 pm
Nonstop0h 00m
$955
IncheonSt. Louis
ICN Incheon Intl - STL Lambert-St Louis
ICNSTL
Incheon Intl
Thu 1/14
6:50 pm-11:32 pm
1 stop19h 42m
Lambert-St Louis
Wed 12/31
12:00 am-3:00 pm
Nonstop0h 00m
$988
IncheonSt. Louis
ICN Incheon Intl - STL Lambert-St Louis
ICNSTL
Incheon Intl
Wed 1/13
6:50 pm-2:55 pm
1 stop35h 05m
Lambert-St Louis
Wed 12/31
12:00 am-3:00 pm
Nonstop0h 00m
$997
IncheonSt. Louis
ICN Incheon Intl - STL Lambert-St Louis
ICNSTL
Incheon Intl
Sat 1/16
6:50 pm-11:32 pm
1 stop19h 42m
Lambert-St Louis
Wed 12/31
12:00 am-3:00 pm
Nonstop0h 00m
$1,043
IncheonSt. Louis
ICN Incheon Intl - STL Lambert-St Louis
ICNSTL
Incheon Intl
Sun 10/18
11:30 am-6:43 pm
1 stop21h 13m
Lambert-St Louis
Wed 12/31
12:00 am-3:00 pm
Nonstop0h 00m
$1,120
Showing 1-10 of 16 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 September.
| Provider | Price Accuracy | Trust Score* |
|---|---|---|
| Price Accuracy3 stars | Trust Score*3 stars | |
| Price Accuracy1 star | 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 locationsFairview Heights
O'Fallon
Fenton
Swansea
Eureka
Wentzville
Maryland Heights
Collinsville
Edwardsville
Glencoe
Chesterfield
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