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St. Louis

$414+ 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 2/23. Fares are subject to change and may not be available on all flights or dates of travel.
ICN — STL
Jan 20 — Jan 271
Tue 1/20
Tue 1/27
1 adult, Economy
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Cheap flight deals from South Korea to St. Louis

Best flights from South Korea to St. Louis
Discover carefully curated flight deals from South Korea to St. Louis that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated December 21, 2025.

This American Airlines deal was found by Cheapflights users on 12/19. 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 2/277:15 pmICN - STL
2 stops32h 31mAmerican Airlines
Sun 3/16:50 pmSTL - ICN
1 stop30h 55mAmerican Airlines
Deal found 12/19$618
This United Airlines deal was found by Cheapflights users on 12/20. 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.
Mon 4/134:50 pmICN - STL
2 stops30h 35mUnited Airlines
Mon 4/208:30 amSTL - ICN
1 stop29h 50mUnited Airlines
Deal found 12/20$660
This American Airlines deal was found by Cheapflights users on 12/20. 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 4/145:25 pmICN - STL
2 stops28h 40mAmerican Airlines
Tue 4/217:20 amSTL - ICN
1 stop18h 10mAmerican Airlines
Deal found 12/20$631
This Japan Airlines deal was found by Cheapflights users on 12/19. 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 4/17:55 amGMP - STL
2 stops22h 07mJapan Airlines
Sun 4/59:20 amSTL - GMP
2 stops35h 25mJapan Airlines
Deal found 12/19$1,336
This United Airlines deal was found by Cheapflights users on 12/21. 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.
Mon 4/134:50 pmICN - STL
2 stops30h 35mUnited Airlines
Tue 4/214:49 pmSTL - ICN
2 stops21h 31mUnited Airlines
Deal found 12/21$674
This American Airlines deal was found by Cheapflights users on 12/20. 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 4/95:25 pmICN - STL
2 stops19h 59mAmerican Airlines
Mon 4/207:20 amSTL - ICN
1 stop18h 10mAmerican Airlines
Deal found 12/20$632
This Japan Airlines deal was found by Cheapflights users on 12/20. 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.
Sat 4/117:55 amGMP - STL
2 stops22h 16mMultiple Airlines
Tue 4/217:20 amSTL - GMP
2 stops24h 30mMultiple Airlines
Deal found 12/20$1,518
This American Airlines deal was found by Cheapflights users on 12/21. 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.
Mon 4/135:25 pmICN - STL
1 stop29h 30mAmerican Airlines
Tue 4/215:34 amSTL - ICN
1 stop19h 56mAmerican Airlines
Deal found 12/21$634
This American Airlines deal was found by Cheapflights users on 12/20. 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.
Mon 4/135:25 pmICN - STL
1 stop29h 30mAmerican Airlines
Mon 4/207:20 amSTL - ICN
1 stop18h 10mAmerican Airlines
Deal found 12/20$634
This Delta deal was found by Cheapflights users on 12/20. 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 1/97:00 amPUS - STL
2 stops29h 35mDelta
Sat 1/173:40 pmSTL - PUS
2 stops36h 55mDelta
Deal found 12/20$1,804
This American Airlines deal was found by Cheapflights users on 12/21. 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.
Mon 4/135:25 pmICN - STL
1 stop29h 30mAmerican Airlines
Sun 4/194:09 pmSTL - ICN
1 stop33h 21mAmerican Airlines
Deal found 12/21$640
This FlightHub deal was found by Cheapflights users on 12/19. 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.
Sat 4/117:55 amGMP - STL
2 stops29h 21mJapan Airlines
Tue 4/217:20 amSTL - GMP
2 stops24h 30mJapan Airlines
Deal found 12/19$1,462
This Mytrip deal was found by Cheapflights users on 12/20. 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 1/98:35 amPUS - STL
3 stops30h 24mMultiple Airlines
Sat 1/174:05 pmSTL - PUS
3 stops28h 30mMultiple Airlines
Deal found 12/20$2,635

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 December 21, 2025.

Most accurate provider

eDreams
3 stars

Most trusted provider

eDreams
3 stars

Round-trip from

$618
(American Airlines)

One-way from

$414
(Kiwi.com)
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 December 21, 2025.
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

Fri 2/27

7:15 pm-12:46 pm

2 stops32h 31m

Lambert-St Louis

Sun 3/1

6:50 pm-4:45 pm

1 stop30h 55m

$618

IncheonSt. Louis

ICN - STL

ICNSTL

Incheon Intl

Tue 4/14

5:25 pm-8:05 am

2 stops28h 40m

Lambert-St Louis

Tue 4/21

7:20 am-3:30 pm

1 stop18h 10m

$631

IncheonSt. Louis

ICN - STL

ICNSTL

Incheon Intl

Thu 4/9

5:25 pm-11:24 pm

2 stops19h 59m

Lambert-St Louis

Mon 4/20

7:20 am-3:30 pm

1 stop18h 10m

$632

IncheonSt. Louis

ICN - STL

ICNSTL

Incheon Intl

Mon 4/13

5:25 pm-8:55 am

1 stop29h 30m

Lambert-St Louis

Tue 4/21

5:34 am-3:30 pm

1 stop19h 56m

$634

IncheonSt. Louis

ICN - STL

ICNSTL

Incheon Intl

Mon 4/13

5:25 pm-8:55 am

1 stop29h 30m

Lambert-St Louis

Mon 4/20

7:20 am-3:30 pm

1 stop18h 10m

$634

IncheonSt. Louis

ICN - STL

ICNSTL

Incheon Intl

Mon 4/13

5:25 pm-8:55 am

1 stop29h 30m

Lambert-St Louis

Sun 4/19

4:09 pm-3:30 pm

1 stop33h 21m

$640

IncheonSt. Louis

ICN - STL

ICNSTL

Incheon Intl

Mon 4/13

4:50 pm-9:25 am

2 stops30h 35m

Lambert-St Louis

Mon 4/20

8:30 am-4:20 am

1 stop29h 50m

$660

IncheonSt. Louis

ICN - STL

ICNSTL

Incheon Intl

Mon 4/13

4:50 pm-9:25 am

2 stops30h 35m

Lambert-St Louis

Tue 4/21

4:49 pm-4:20 am

2 stops21h 31m

$674

SeoulSt. Louis

GMP - STL

GMPSTL

Seoul Gimpo Intl

Wed 4/1

7:55 am-4:02 pm

2 stops22h 07m

Lambert-St Louis

Sun 4/5

9:20 am-10:45 am

2 stops35h 25m

$1,336

SeoulSt. Louis

GMP - STL

GMPSTL

Seoul Gimpo Intl

Sat 4/11

7:55 am-11:16 pm

2 stops29h 21m

Lambert-St Louis

Tue 4/21

7:20 am-9:50 pm

2 stops24h 30m

$1,462

Flights are sorted by cheapest round-trip flights first.

Deals found on 12/19

Showing 1-10 of 17 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 month to book a flight from South Korea to St. Louis?

Currently, November is the cheapest month in which you can book a flight from South Korea to St. Louis (average of $568). Flying from South Korea to St. Louis in January is currently the most expensive (average of $1,248). 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.

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 December 21, 2025.

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 in the morning tend to be the most expensive. A flight at noon could potentially save you up to 62% 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 December 16, 2024.

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 December 21, 2025.
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
8,021 reviews

Crew

8.5

Food

7.3

Overall

7.9

Boarding

8.1

Entertainment

7.9

Comfort

7.9

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
8,021 reviews
Delta
7.9
Good
8,021 reviews

Crew

8.5

Food

7.3

Overall

7.9

Boarding

8.1

Entertainment

7.9

Comfort

7.9

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
11,050 reviews
Delta
7.9
Good
8,021 reviews

Crew

8.5

Food

7.3

Overall

7.9

Boarding

8.1

Entertainment

7.9

Comfort

7.9

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 and Japan Airlines fly from South Korea to St. Louis in about 22h 07m. The time it takes to get you to your destination can typically vary by up to 10h 24m. There are 6654 mi between South Korea and St. Louis. This flight may include one or multiple stops.

  • What are the cheapest airlines to fly from South Korea to St. Louis one-way?

    The cheapest airline one-way is American Airlines, with whom users have recently found tickets for as low as $98. However, be on the lookout for offers from Delta and United Airlines, as they are both options that can get you from South Korea to St. Louis for a low price.

  • 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.

  • What is the cheapest month to book a flight from South Korea to St. Louis?

    Currently, November is the cheapest month in which you can book a flight from South Korea to St. Louis (average of $568). Flying from South Korea to St. Louis in January is currently the most expensive (average of $1,248). 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.

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
Fairview Heights
Maryland Heights
Collinsville
Swansea
Eureka
Glencoe
St. Peters
Chesterfield
Alton
Farmington
Festus

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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 December 21, 2025.
AirlineCheapestAverageFlexibilityOn-time
American AirlinesCheapest$568Average$1,621FlexibilityNo cancel feeOn-time71%
DeltaCheapest$630Average$926FlexibilityNo cancel feeOn-timeN/A

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