How long does it take to fly to St. Louis?

Flight times from South Korea to St. Louis vary, but if you’re flying out of Incheon and flying into St. Louis (one of the most popular routes), then the duration is 18h 42m on average. Another popular route from South Korea to St. Louis is flying from Busan to St. Louis, which will take roughly 22h 06m. Keep in mind that layovers or delays could extend your travel time.

What is the cheapest airline that flies from South Korea to Lambert-St Louis?

American Airlines, Japan Airlines, and EVA Air are the most popular carriers operating from South Korea to Lambert-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 many operators does momondo search for flights from South Korea to Lambert-St Louis Airport?

As of October 2025, there is 1 operator available to choose from for flights from South Korea to Lambert-St Louis Airport.

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.

$395 Cheap Flights from South Korea to St. Louis in 2025/26

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Find the cheapest flights from South Korea to St. Louis

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

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8:05 pm - 12:24 amICN-STL

19h 19m2 stops

6:00 am - 3:30 pmSTL-ICN

18h 30m1 stop

$620Delta

Find Deal

Çar, Kas 5 - Paz, Kas 9

7:15 pm - 10:34 pmICN-STL

18h 19m1 stop

5:10 am - 4:45 pmSTL-ICN

20h 35m1 stop

$630American Airlines

Find Deal

Çar, Kas 26 - Çar, Ara 3

7:15 pm - 8:08 amICN-STL

27h 53m2 stops

5:17 am - 4:45 pmSTL-ICN

20h 28m1 stop

$634American Airlines

Find Deal

Cum, Kas 7 - Cum, Kas 14

7:15 pm - 4:27 pmICN-STL

36h 12m1 stop

7:00 am - 4:45 pmSTL-ICN

18h 45m1 stop

$636American Airlines

Find Deal

Cum, Kas 7 - Cum, Kas 14

12:45 pm - 10:22 pmICN-STL

24h 37m2 stops

6:43 pm - 4:15 pmSTL-ICN

30h 32m2 stops

$645United Airlines

Find Deal

Çar, Kas 5 - Paz, Kas 9

6:40 pm - 11:06 pmICN-STL

18h 26m1 stop

7:47 pm - 4:30 pmSTL-ICN

29h 43m2 stops

$672Delta

Find Deal

Cmt, Eki 25 - Pzt, Kas 10

6:40 pm - 11:34 amICN-STL

30h 54m1 stop

5:22 pm - 3:30 pmSTL-ICN

31h 08m2 stops

$676Delta

Find Deal

Cmt, Eki 25 - Cmt, Kas 8

8:35 pm - 11:59 pmICN-STL

18h 24m1 stop

7:00 am - 7:25 pmSTL-ICN

45h 25m2 stops

$713Alaska Airlines

Find Deal

Cum, Kas 7 - Cum, Kas 14

10:25 am - 11:10 pmPUS-STL

26h 45m2 stops

6:45 am - 8:45 pmSTL-PUS

24h 00m2 stops

$812Korean Air

Find Deal

Çar, Mar 18 - Çar, Mar 25

12:45 pm - 9:00 pmICN-STL

23h 15m2 stops

10:30 am - 5:40 amSTL-ICN

28h 10m2 stops

$1,038United Airlines

Find Deal

Per, Şub 12 - Pzt, Şub 16

Delta flights from South Korea to St. Louis

Our best Delta deals on South Korea to St. Louis flight tickets

Delta

Nov 5

ICN8:05 pmIncheon Intl

19h 19m

2 stops

STL12:24 amLambert-St Louis

Nov 9

STL6:00 amLambert-St Louis

18h 30m

1 stop

ICN3:30 pmIncheon Intl

$620

Find similar

Delta

Oct 25

ICN6:40 pmIncheon Intl

18h 26m

1 stop

STL11:06 pmLambert-St Louis

Nov 10

STL7:47 pmLambert-St Louis

29h 43m

2 stops

ICN4:30 pmIncheon Intl

$672

Find similar

Delta

Oct 25

ICN6:40 pmIncheon Intl

30h 54m

1 stop

STL11:34 amLambert-St Louis

Nov 8

STL5:22 pmLambert-St Louis

31h 08m

2 stops

ICN3:30 pmIncheon Intl

$676

Find similar

American Airlines flights from South Korea to St. Louis

Our best American Airlines deals on South Korea to St. Louis flight tickets

American Airlines

Nov 26

ICN7:15 pmIncheon Intl

18h 19m

1 stop

STL10:34 pmLambert-St Louis

Dec 3

STL5:10 amLambert-St Louis

20h 35m

1 stop

ICN4:45 pmIncheon Intl

$630

Find similar

American Airlines

Nov 7

ICN7:15 pmIncheon Intl

27h 53m

2 stops

STL8:08 amLambert-St Louis

Nov 14

STL5:17 amLambert-St Louis

20h 28m

1 stop

ICN4:45 pmIncheon Intl

$634

Find similar

American Airlines

Nov 7

ICN7:15 pmIncheon Intl

36h 12m

1 stop

STL4:27 pmLambert-St Louis

Nov 14

STL7:00 amLambert-St Louis

18h 45m

1 stop

ICN4:45 pmIncheon Intl

$636

Find similar

Fly from

Fly to

Route

Depart

Return

Price

IncheonSt. Louis

ICN - STL

ICNSTL

Incheon Intl

Çar 11/5

8:05 pm-12:24 am

2 stops19h 19m

Lambert-St Louis

Paz 11/9

6:00 am-3:30 pm

1 stop18h 30m

$620

IncheonSt. Louis

ICN - STL

ICNSTL

Incheon Intl

Çar 11/26

7:15 pm-10:34 pm

1 stop18h 19m

Lambert-St Louis

Çar 12/3

5:10 am-4:45 pm

1 stop20h 35m

$630

IncheonSt. Louis

ICN - STL

ICNSTL

Incheon Intl

Cum 11/7

7:15 pm-8:08 am

2 stops27h 53m

Lambert-St Louis

Cum 11/14

5:17 am-4:45 pm

1 stop20h 28m

$634

IncheonSt. Louis

ICN - STL

ICNSTL

Incheon Intl

Cum 11/7

7:15 pm-4:27 pm

1 stop36h 12m

Lambert-St Louis

Cum 11/14

7:00 am-4:45 pm

1 stop18h 45m

$636

IncheonSt. Louis

ICN - STL

ICNSTL

Incheon Intl

Çar 11/5

12:45 pm-10:22 pm

2 stops24h 37m

Lambert-St Louis

Paz 11/9

6:43 pm-4:15 pm

2 stops30h 32m

$645

IncheonSt. Louis

ICN - STL

ICNSTL

Incheon Intl

Cmt 10/25

6:40 pm-11:06 pm

1 stop18h 26m

Lambert-St Louis

Pzt 11/10

7:47 pm-4:30 pm

2 stops29h 43m

$672

IncheonSt. Louis

ICN - STL

ICNSTL

Incheon Intl

Cmt 10/25

6:40 pm-11:34 am

1 stop30h 54m

Lambert-St Louis

Cmt 11/8

5:22 pm-3:30 pm

2 stops31h 08m

$676

IncheonSt. Louis

ICN - STL

ICNSTL

Incheon Intl

Cum 11/7

8:35 pm-11:59 pm

1 stop18h 24m

Lambert-St Louis

Cum 11/14

7:00 am-7:25 pm

2 stops45h 25m

$713

BusanSt. Louis

PUS - STL

PUSSTL

Busan Gimhae

Çar 3/18

10:25 am-11:10 pm

2 stops26h 45m

Lambert-St Louis

Çar 3/25

6:45 am-8:45 pm

2 stops24h 00m

$812

IncheonSt. Louis

ICN - STL

ICNSTL

Incheon Intl

Per 2/12

12:45 pm-9:00 pm

2 stops23h 15m

Lambert-St Louis

Pzt 2/16

10:30 am-5:40 am

2 stops28h 10m

$1,038

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 20 resultsSorted by cheapest first

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

Prices

Airlines

Other information

What is the cheapest day to depart on your flight to St. Louis?

The cheapest day to depart on your flight to St. Louis is on a Wednesday when prices can be found for as low as $1,203. This is often the case because there is less demand to fly during this day of the week. If your travel schedule is flexible, try to avoid departing on a Monday because tickets tend to average around $1,719. These prices are subject to change though, so be sure to set up a Price Alert for flights to St. Louis.

What is the cheapest time of day to depart on your flight to St. Louis?

Flying to St. Louis from South Korea in the evening is the least expensive time of day to depart. momondo users have found prices as low as $1,112 when looking at flights departing in the evening. In the morning is when there is more demand to fly to St. Louis, so prices are often more expensive at around $1,719 per ticket.

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

You could potentially save up to 22% 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

Direct flights	None

There are no direct flights from South Korea to St. Louis. There are no popular flight routes from South Korea to St. Louis.

Search flight deals

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 many operators does momondo search for flights from South Korea to Lambert-St Louis Airport?
As of October 2025, there is 1 operator available to choose from for flights from South Korea to Lambert-St Louis Airport.
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.

Best airlines flying from South Korea to St. Louis

Compare and see reviews for airlines that fly from South Korea to St. Louis with momondo

Airline	Rating	Free Cancellation	Price
Delta	PriceFrom $663	Free Cancellation	Rating 7.9 7,973 reviews		Search Delta flights

St. Charles

Chesterfield

Hermann

Fairview Heights

Florissant

Maryland Heights

O'Fallon

Wentzville

Collinsville

Fenton

St. Peters

Alton

Farmington

Festus

Glencoe

Clayton

Edwardsville

Eureka

Litchfield

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.