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Cheap flights from South Korea to St. Louis from $562

This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from South Korea to St. Louis departing on 9/30. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
1 adult
1 adult, Economy, 0 bags

Find the cheapest flights from South Korea to St. Louis

Recent round-trip flight deals from South Korea to St. Louis

Enter your travel dates to find the best prices.
American Airlines Logo
5:50 pm - 11:43 pmICN  Incheon Intl-STL Lambert-St Louis
19h 53m1 stop Dallas/Fort Worth
American Airlines Logo
5:43 am - 3:45 pmSTL  Lambert-St Louis-ICN Incheon Intl
20h 02m1 stop Dallas/Fort Worth
$929American Airlines
Wed, Sep 9 - Tue, Sep 15
American Airlines Logo
5:50 pm - 12:27 amICN  Incheon Intl-STL Lambert-St Louis
20h 37m2 stops Dallas/Fort Worth Chicago O'Hare Intl
American Airlines Logo
5:43 am - 3:45 pmSTL  Lambert-St Louis-ICN Incheon Intl
20h 02m1 stop Dallas/Fort Worth
$933American Airlines
Wed, Sep 9 - Tue, Sep 15
American Airlines Logo
5:50 pm - 9:24 amICN  Incheon Intl-STL Lambert-St Louis
29h 34m1 stop Dallas/Fort Worth
American Airlines Logo
10:45 am - 3:45 pmSTL  Lambert-St Louis-ICN Incheon Intl
39h 00m2 stops Washington, D.C. Reagan-National Dallas/Fort Worth
$979American Airlines
Fri, Sep 11 - Mon, Sep 14
American Airlines Logo
5:50 pm - 12:15 pmICN  Incheon Intl-STL Lambert-St Louis
32h 25m1 stop Dallas/Fort Worth
American Airlines Logo
10:45 am - 3:45 pmSTL  Lambert-St Louis-ICN Incheon Intl
39h 00m2 stops Washington, D.C. Reagan-National Dallas/Fort Worth
$981American Airlines
Thu, Sep 17 - Sun, Sep 20
American Airlines Logo
5:50 pm - 9:24 amICN  Incheon Intl-STL Lambert-St Louis
29h 34m1 stop Dallas/Fort Worth
American Airlines Logo
10:45 am - 3:45 pmSTL  Lambert-St Louis-ICN Incheon Intl
39h 00m2 stops Washington, D.C. Reagan-National Dallas/Fort Worth
$985American Airlines
Fri, Sep 11 - Mon, Sep 14
American Airlines Logo
5:50 pm - 9:24 amICN  Incheon Intl-STL Lambert-St Louis
29h 34m1 stop Dallas/Fort Worth
American Airlines Logo
10:45 am - 3:45 pmSTL  Lambert-St Louis-ICN Incheon Intl
39h 00m2 stops Washington, D.C. Reagan-National Dallas/Fort Worth
$989American Airlines
Fri, Sep 11 - Mon, Sep 14
American Airlines Logo
5:50 pm - 11:43 pmICN  Incheon Intl-STL Lambert-St Louis
19h 53m1 stop Dallas/Fort Worth
American Airlines Logo
7:00 am - 3:45 pmSTL  Lambert-St Louis-ICN Incheon Intl
18h 45m1 stop Dallas/Fort Worth
$1,083American Airlines
Fri, Sep 11 - Mon, Sep 14
American Airlines Logo
5:50 pm - 11:43 pmICN  Incheon Intl-STL Lambert-St Louis
19h 53m1 stop Dallas/Fort Worth
American Airlines Logo
7:00 am - 3:45 pmSTL  Lambert-St Louis-ICN Incheon Intl
18h 45m1 stop Dallas/Fort Worth
$1,089American Airlines
Fri, Sep 11 - Mon, Sep 14
American Airlines Logo
5:50 pm - 11:43 pmICN  Incheon Intl-STL Lambert-St Louis
19h 53m1 stop Dallas/Fort Worth
American Airlines Logo
7:00 am - 3:45 pmSTL  Lambert-St Louis-ICN Incheon Intl
18h 45m1 stop Dallas/Fort Worth
$1,094American Airlines
Fri, Sep 11 - Mon, Sep 14
American Airlines Logo
5:50 pm - 12:14 amICN  Incheon Intl-STL Lambert-St Louis
20h 24m2 stops Dallas/Fort Worth Chicago O'Hare Intl
American Airlines Logo
7:00 am - 3:45 pmSTL  Lambert-St Louis-ICN Incheon Intl
18h 45m1 stop Dallas/Fort Worth
$1,112American Airlines
Fri, Aug 21 - Fri, Sep 18

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Japan Airlines flights from South Korea to St. Louis

Our best Japan Airlines deals on South Korea to St. Louis flight tickets
Japan Airlines
Sep 10
GMP8:00 amSeoul Gimpo Intl
29h 30m
2 stops
STL11:30 pmLambert-St Louis
Sep 14
STL7:21 amLambert-St Louis
23h 54m
2 stops
GMP9:15 pmSeoul Gimpo Intl
$1,114
Japan Airlines
Sep 10
GMP8:00 amSeoul Gimpo Intl
29h 30m
2 stops
STL11:30 pmLambert-St Louis
Sep 14
STL7:21 amLambert-St Louis
23h 54m
2 stops
GMP9:15 pmSeoul Gimpo Intl
$1,118
Japan Airlines
Sep 10
GMP8:00 amSeoul Gimpo Intl
29h 30m
2 stops
STL11:30 pmLambert-St Louis
Sep 14
STL7:21 amLambert-St Louis
23h 54m
2 stops
GMP9:15 pmSeoul Gimpo Intl
$1,121

American Airlines flights from South Korea to St. Louis

Our best American Airlines deals on South Korea to St. Louis flight tickets
American Airlines
Sep 9
ICN5:50 pmIncheon Intl
19h 53m
1 stop
STL11:43 pmLambert-St Louis
Sep 15
STL5:43 amLambert-St Louis
20h 02m
1 stop
ICN3:45 pmIncheon Intl
$929
American Airlines
Sep 9
ICN5:50 pmIncheon Intl
20h 37m
2 stops
STL12:27 amLambert-St Louis
Sep 15
STL5:43 amLambert-St Louis
20h 02m
1 stop
ICN3:45 pmIncheon Intl
$933
American Airlines
Sep 11
ICN5:50 pmIncheon Intl
29h 34m
1 stop
STL9:24 amLambert-St Louis
Sep 14
STL10:45 amLambert-St Louis
39h 00m
2 stops
ICN3:45 pmIncheon Intl
$979

momondo 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, momondo users made 832,500 searches. Data last updated August 11, 2026.
Use the filters below to find and compare flights from South Korea to St. Louis that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

IncheonSt. Louis

ICN Incheon Intl - STL Lambert-St Louis

ICNSTL

Incheon Intl

Wed 9/9

5:50 pm-11:43 pm

1 stop19h 53m

Lambert-St Louis

Tue 9/15

5:43 am-3:45 pm

1 stop20h 02m

$929

IncheonSt. Louis

ICN Incheon Intl - STL Lambert-St Louis

ICNSTL

Incheon Intl

Wed 9/9

5:50 pm-12:27 am

2 stops20h 37m

Lambert-St Louis

Tue 9/15

5:43 am-3:45 pm

1 stop20h 02m

$933

IncheonSt. Louis

ICN Incheon Intl - STL Lambert-St Louis

ICNSTL

Incheon Intl

Fri 9/11

5:50 pm-9:24 am

1 stop29h 34m

Lambert-St Louis

Mon 9/14

10:45 am-3:45 pm

2 stops39h 00m

$979

IncheonSt. Louis

ICN Incheon Intl - STL Lambert-St Louis

ICNSTL

Incheon Intl

Thu 9/17

5:50 pm-12:15 pm

1 stop32h 25m

Lambert-St Louis

Sun 9/20

10:45 am-3:45 pm

2 stops39h 00m

$981

IncheonSt. Louis

ICN Incheon Intl - STL Lambert-St Louis

ICNSTL

Incheon Intl

Fri 9/11

5:50 pm-9:24 am

1 stop29h 34m

Lambert-St Louis

Mon 9/14

10:45 am-3:45 pm

2 stops39h 00m

$985

IncheonSt. Louis

ICN Incheon Intl - STL Lambert-St Louis

ICNSTL

Incheon Intl

Fri 9/11

5:50 pm-9:24 am

1 stop29h 34m

Lambert-St Louis

Mon 9/14

10:45 am-3:45 pm

2 stops39h 00m

$989
Quickest round-trip

IncheonSt. Louis

ICN Incheon Intl - STL Lambert-St Louis

ICNSTL

Incheon Intl

Fri 9/11

5:50 pm-11:43 pm

1 stop19h 53m

Lambert-St Louis

Mon 9/14

7:00 am-3:45 pm

1 stop18h 45m

$1,083

IncheonSt. Louis

ICN Incheon Intl - STL Lambert-St Louis

ICNSTL

Incheon Intl

Fri 9/11

5:50 pm-11:43 pm

1 stop19h 53m

Lambert-St Louis

Mon 9/14

7:00 am-3:45 pm

1 stop18h 45m

$1,089

IncheonSt. Louis

ICN Incheon Intl - STL Lambert-St Louis

ICNSTL

Incheon Intl

Fri 9/11

5:50 pm-11:43 pm

1 stop19h 53m

Lambert-St Louis

Mon 9/14

7:00 am-3:45 pm

1 stop18h 45m

$1,094

IncheonSt. Louis

ICN Incheon Intl - STL Lambert-St Louis

ICNSTL

Incheon Intl

Fri 8/21

5:50 pm-12:14 am

2 stops20h 24m

Lambert-St Louis

Fri 9/18

7:00 am-3:45 pm

1 stop18h 45m

$1,112

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 20 resultsSorted by cheapest first
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See travel insights to St. Louis from

How to get the cheapest flight ticket from South Korea to St. Louis

Look no further. We've gone through all the searches for this route on momondo so you have the important information and insights to find the cheapest flight ticket for your trip

What is the cheapest month to fly to St. Louis?

In general, August is the cheapest month to fly from South Korea to St. Louis. Due to it being the ‘off-season’ during this time, you can expect flight prices to be around $0. The month of April is another great option to travel to St. Louis, with average flight prices from South Korea averaging around $0.

Can stopping save me money on South Korea to St. Louis flights?

You could potentially save up to 10% on your flight if you consider stops on a South Korea to St. Louis flight.

Cheap South Korea to St. Louis flight deals and tips

Find info about flight duration, direct flights, and airports for your flight from South Korea to St. Louis

Fastest flight time

20h 53m

Direct flights

None
The fastest flight from South Korea to St. Louis takes 20h 53m
There are no direct flights from South Korea to St. Louis. There are no popular flight routes from South Korea to St. Louis.
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Frequently asked questions about flying from South Korea to St. Louis

  • When did momondo last update prices for flights from South Korea to Lambert-St Louis Airport?

    Prices for flights from South Korea to Lambert-St Louis Airport are refreshed on a daily basis.

  • How old do you have to be to fly from South Korea to Lambert-St Louis Airport?

    Although the minimum age for a child to fly alone is five, airlines that offer an unaccompanied minor (UMNR) service may have their own age limits, which could be impacted by factors such as flight length, timing, and layovers. It is recommended that you verify with the airline you are booking with for travel from South Korea to Lambert-St Louis Airport.

  • What documentation or ID do you need to fly to Lambert-St Louis Airport?

    The required travel and health documents for your Lambert-St Louis Airport trip may vary depending on your itinerary and personal circumstances. As a general rule, you should carry multiple documents, including a national ID card or driver's license and a passport valid for six months after your intended arrival at Lambert-St Louis Airport. We recommend that you seek guidance from your airline or a reliable third party such as IATA.

Traveling to a place near St. Louis?

Book flights to St. Louis if you plan to visit one of these locations
St. Charles
Chesterfield
Fairview Heights
Hermann
St. Peters
Maryland Heights
Collinsville
Florissant
Alton
O'Fallon
Farmington
Clayton
Fenton
Festus
Wentzville
Eureka
Edwardsville
Litchfield
Grafton
Shrewsbury

Why use momondo?

Why should I use momondo to find a flight deal from South Korea to St. Louis?

It is quick and easy to find South Korea to St. Louis flights on momondo. We search and return numerous flight options from various airlines and agents. You can then use our filters to narrow your search until you have found the most convenient flight to St. Louis that suits you.

Can I find flights from South Korea to St. Louis with flexible booking policies on momondo?

All flight searches from South Korea to St. Louis on momondo can be filtered to show those which offer flexible booking policies.

How can momondo help me find flights from South Korea to St. Louis?

momondo provides multiple filters to help you find the best flight to St. Louis from South Korea. Filter by price, airline, airports, cabin, aircraft, payment method, number of stops and more.

I’m not ready to book a flight from South Korea to St. Louis right now. Can momondo alert me if prices change?

If you are not ready to book a flight from South Korea to St. Louis now, use our insights above to find helpful tips or alternatively set up a price alert, where momondo will track prices on flights to St. Louis and let you know when they change.

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