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St. Louis

$463+ Cheap flights from South Korea 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 6/4. Fares are subject to change and may not be available on all flights or dates of travel.
ICN — STL
Mar 9 — Mar 161
Mon 3/9
Mon 3/16
1 adult, Economy
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Cheap flight deals from South Korea to St. Louis

Cheapest flights from South Korea to St. Louis
Explore the most affordable flight options available from South Korea to St. Louis. Find the lowest fares from popular airlines and budget airlines, with prices last updated on February 7, 2026.

This American Airlines deal was found by Cheapflights users on 2/6. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 2/197:15 pm
ICN
-
STL
1 stop30h 46m
American Airlines
Mon 2/232:31 pm
STL
-
ICN
2 stops59h 14m
American Airlines
Deal found 2/6$848
This American Airlines deal was found by Cheapflights users on 2/4. 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 2/57:15 pm
ICN
-
STL
2 stops42h 29m
American Airlines
Mon 2/97:15 am
STL
-
ICN
1 stop18h 30m
American Airlines
Deal found 2/4$898
This Air Canada deal was found by Cheapflights users on 2/5. 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 Air Canada is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 5/45:45 pm
ICN
-
STL
2 stops32h 21m
Air Canada
Fri 5/291:00 pm
STL
-
ICN
2 stops37h 05m
Air Canada
Deal found 2/5$917
This Air Canada deal was found by Cheapflights users on 2/4. 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 Air Canada is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 5/275:45 pm
ICN
-
STL
2 stops32h 21m
Air Canada
Mon 8/315:20 am
STL
-
ICN
2 stops20h 45m
Air Canada
Deal found 2/4$940
This Air Canada deal was found by Cheapflights users on 2/5. 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 Air Canada is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 4/255:45 pm
ICN
-
STL
2 stops35h 39m
Air Canada
Fri 5/11:00 pm
STL
-
ICN
2 stops37h 05m
Air Canada
Deal found 2/5$948
This Air Canada deal was found by Cheapflights users on 2/5. 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 Air Canada is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 2/196:55 pm
ICN
-
STL
2 stops37h 03m
Air Canada
Wed 2/254:05 pm
STL
-
ICN
2 stops32h 55m
Air Canada
Deal found 2/5$950
This Alaska Airlines deal was found by Cheapflights users on 2/4. 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 Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 6/17:35 pm
ICN
-
STL
2 stops35h 31m
Alaska Airlines
Sun 8/306:41 am
STL
-
ICN
1 stop20h 49m
Alaska Airlines
Deal found 2/4$961
This Mytrip deal was found by Cheapflights users on 2/4. 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 Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 5/255:45 pm
ICN
-
STL
2 stops44h 13m
Air Canada
Sun 8/3012:10 pm
STL
-
ICN
2 stops37h 55m
Air Canada
Deal found 2/4$967
This Alaska Airlines deal was found by Cheapflights users on 2/4. 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 Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 5/257:35 pm
ICN
-
STL
2 stops35h 31m
Alaska Airlines
Sun 8/306:41 am
STL
-
ICN
1 stop20h 49m
Alaska Airlines
Deal found 2/4$977
This Air Canada deal was found by Cheapflights users on 2/7. 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 Air Canada is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 4/135:45 pm
ICN
-
STL
2 stops41h 09m
Air Canada
Sat 4/252:40 pm
STL
-
ICN
2 stops35h 25m
Air Canada
Deal found 2/7$985
This American Airlines deal was found by Cheapflights users on 2/6. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 4/118:00 am
GMP
-
STL
2 stops22h 00m
Multiple Airlines
Tue 4/218:54 am
STL
-
GMP
2 stops22h 21m
Multiple Airlines
Deal found 2/6$1,337
This Japan Airlines deal was found by Cheapflights users on 2/5. 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 Japan Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 10/168:00 am
GMP
-
STL
2 stops29h 05m
Japan Airlines
Mon 10/199:47 am
STL
-
GMP
2 stops21h 28m
Japan Airlines
Deal found 2/5$1,346

Find flight deals from South Korea to St. Louis

Keep the following information in mind while searching for South Korea to St. Louis flight deals. Data was last updated February 7, 2026.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$848
(American Airlines)

One-way from

$463
(Mytrip)
Provider with most accurate pricing for Seoul (SEL)-Lambert-St Louis flight deals.
Search Deals
Provider most trusted by Cheapflights users for Seoul (SEL)-Lambert-St Louis flights.
Search Deals
From South Korea to Lambert-St Louis
Search Deals
One-way flight from South Korea to Lambert-St Louis
Search Deals

Cheapflights Fare Finder

 
Customize your flight search to find flights from South Korea 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 February 7, 2026.
Use the filters below to find and compare flights from South Korea to St. Louis that are best for you.

Fly from

South Korea

Fly to

St. Louis

Route

Depart

Return

Price

IncheonSt. Louis

ICN - STL

ICNSTL

Incheon Intl

Thu 2/19

7:15 pm-11:01 am

1 stop30h 46m

Lambert-St Louis

Mon 2/23

2:31 pm-4:45 pm

2 stops59h 14m

$848

IncheonSt. Louis

ICN - STL

ICNSTL

Incheon Intl

Mon 5/4

5:45 pm-12:06 pm

2 stops32h 21m

Lambert-St Louis

Fri 5/29

1:00 pm-4:05 pm

2 stops37h 05m

$917

IncheonSt. Louis

ICN - STL

ICNSTL

Incheon Intl

Sat 4/25

5:45 pm-3:24 pm

2 stops35h 39m

Lambert-St Louis

Fri 5/1

1:00 pm-4:05 pm

2 stops37h 05m

$948

IncheonSt. Louis

ICN - STL

ICNSTL

Incheon Intl

Thu 2/19

8:10 pm-3:29 pm

1 stop34h 19m

Lambert-St Louis

Wed 2/25

4:05 pm-4:00 pm

2 stops32h 55m

$966

IncheonSt. Louis

ICN - STL

ICNSTL

Incheon Intl

Mon 5/25

5:45 pm-11:58 pm

2 stops44h 13m

Lambert-St Louis

Sun 8/30

12:10 pm-4:05 pm

2 stops37h 55m

$967

IncheonSt. Louis

ICN - STL

ICNSTL

Incheon Intl

Mon 6/1

5:45 pm-9:11 pm

2 stops41h 26m

Lambert-St Louis

Sun 8/30

12:10 pm-4:05 pm

2 stops37h 55m

$967

IncheonSt. Louis

ICN - STL

ICNSTL

Incheon Intl

Mon 4/13

5:45 pm-8:54 pm

2 stops41h 09m

Lambert-St Louis

Fri 4/24

2:40 pm-4:05 pm

2 stops35h 25m

$1,042

IncheonSt. Louis

ICN - STL

ICNSTL

Incheon Intl

Tue 4/14

5:45 pm-4:56 pm

2 stops37h 11m

Lambert-St Louis

Tue 4/21

4:30 pm-4:05 pm

2 stops33h 35m

$1,047

IncheonSt. Louis

ICN - STL

ICNSTL

Incheon Intl

Mon 5/25

5:40 pm-9:34 pm

1 stop17h 54m

Lambert-St Louis

Sun 8/30

5:32 pm-3:45 pm

1 stop32h 13m

$1,053

IncheonSt. Louis

ICN - STL

ICNSTL

Incheon Intl

Tue 4/14

9:00 pm-2:51 pm

1 stop31h 51m

Lambert-St Louis

Tue 4/21

3:50 pm-5:15 am

1 stop23h 25m

$1,058

Flights are sorted by cheapest round-trip flights first.

Deals found on 2/6

Showing 1-10 of 33 results
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Best time to book a flight from South Korea to St. Louis

Have a flexible travel schedule? Discover the best time to fly to St. Louis from South Korea with our price prediction graph.
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 South Korea to St. Louis

What is the cheapest time of day to fly from KR to STL?

Find hourly flight availability from South Korea to St. Louis. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated February 7, 2026.

One of the essential ways to save on airfare from South Korea to St. Louis is to remain as flexible as possible. Flights that are at noon tend to be the most expensive. A flight in the afternoon could potentially save you up to 64% on airfare.

What is the cheapest day to fly from South Korea to St. Louis?

Use this chart to determine the cheapest time to fly round-trip from South Korea to St. Louis. Price data was last updated on March 30, 2025.

Travelers seeking maximum savings on their South Korea to St. Louis flight should consider departing on Friday at noon when fares are most often at their lowest. Saturday at noon flights should be avoided if possible as fares are typically the most expensive at this time.

Reviews of airlines servicing St. Louis

Get insights into the airlines that provide service to St. Louis. 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 St. Louis. Reviews last updated February 7, 2026.
See what other customers who have flown with Delta and American Airlines from South Korea to St. Louis have to say. You can also see how each airline compares in terms of entertainment options, comfort, food, crew/service, and boarding process.
Delta
7.9
Good
8,162 reviews

Food

7.2

Overall

7.9

Comfort

7.9

Crew

8.5

Entertainment

7.8

Boarding

8.1

Reviews

1 / 20
6.0
Good

Jim,Nov 2025

AVL - ATL

The exit row seats without a seat in front are great for leg room but don’t have a fold out entertainment console so you’re forced to use the screen several feet in front of you (there is, at least, a remote). Best to bring a tablet loaded with entertainment or a book.
Delta
7.9
Good
8,162 reviews
Delta
7.9
Good
8,162 reviews

Food

7.2

Overall

7.9

Comfort

7.9

Crew

8.5

Entertainment

7.8

Boarding

8.1

Reviews

1 / 20
6.0
Good

Jim,Nov 2025

AVL - ATL

The exit row seats without a seat in front are great for leg room but don’t have a fold out entertainment console so you’re forced to use the screen several feet in front of you (there is, at least, a remote). Best to bring a tablet loaded with entertainment or a book.
American Airlines
7.2
Good
11,248 reviews
Delta
7.9
Good
8,162 reviews

Food

7.2

Overall

7.9

Comfort

7.9

Crew

8.5

Entertainment

7.8

Boarding

8.1

Reviews

1 / 20
6.0
Good

Jim,Nov 2025

AVL - ATL

The exit row seats without a seat in front are great for leg room but don’t have a fold out entertainment console so you’re forced to use the screen several feet in front of you (there is, at least, a remote). Best to bring a tablet loaded with entertainment or a book.

Related info for your journey

Find useful and relevant information for your journey from South Korea to St. Louis. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.

  • What airport do you fly into for flights to St. Louis from South Korea?

    Located just 12.7 mi from the city center, Lambert-St Louis (STL) is the airport most travelers will use when flying to St. Louis from South Korea.

  • How long is the flight from South Korea to St. Louis?

    Airlines like American Airlines, Air Canada, and Japan Airlines fly from South Korea to St. Louis in about 25h 33m. The time it takes to get you to your destination can typically vary by up to 6h 48m. There are 6654 mi between South Korea and St. Louis. This flight may include one or multiple stops.

  • What are the most popular routes from South Korea to St. Louis?

    The most popular route from South Korea to St. Louis is Incheon Intl - Lambert-St Louis. You may also consider Seoul Gimpo Intl - Lambert-St Louis or Busan Gimhae - Lambert-St Louis.

  • Can I find deals for flights from South Korea to St. Louis that include hotel bookings?

    Yes. In addition to deals on South Korea to St. Louis flights, Cheapflights offers vacation packages that include both flights and hotel.

  • How can I find direct flights from South Korea to St. Louis?

    After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from South Korea to St. Louis.

  • Can I find deals for business class flights from South Korea to St. Louis?

    Yes. Cheapflights offers flight deals from South Korea to St. Louis by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.

See more FAQs

Traveling to a place near St. Louis?

Book flights to St. Louis if you plan to visit one of these locations
Edwardsville
O'Fallon
Swansea
Fairview Heights
Maryland Heights
Collinsville
Eureka
Glencoe
Chesterfield
Alton
Farmington
Festus

Browse thousands of different options on Cheapflights for your next trip

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Top 2 airlines flying from South Korea to St. Louis

Discover the top 2 airlines that operate flights from South Korea to St. Louis. 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 February 7, 2026.
AirlineCheapestAverageFlexibilityOn-time
American AirlinesCheapest$568Average$1,621FlexibilityNo cancel feeOn-time71%
DeltaCheapest$630Average$784FlexibilityNo cancel feeOn-timeN/A

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