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

American Airlines, Japan Airlines, and United Airlines are the most popular carriers operating from South Korea to Lambert-St Louis

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 44m on average. Another popular route from South Korea to St. Louis is flying from Seoul to St. Louis, which will take roughly 30h 30m. Keep in mind that layovers or delays could extend your travel time.

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 August 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.

$494 Cheap Flights from South Korea to St. Louis in 2025

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Find the cheapest flights from South Korea to St. Louis

Round-trip

One-way

Last minute

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

6:00 pm - 7:57 pmICN-STL

39h 57m1 stop

4:05 pm - 4:15 pmSTL-ICN

34h 10m2 stops

$587Air Canada

Find Deal

Fri, Sep 19 - Mon, Oct 20

6:00 pm - 3:18 pmICN-STL

35h 18m2 stops

4:05 pm - 4:15 pmSTL-ICN

34h 10m2 stops

$594Air Canada

Find Deal

Fri, Sep 19 - Mon, Oct 20

7:40 pm - 12:24 amICN-STL

18h 44m1 stop

6:40 am - 4:50 pmSTL-ICN

20h 10m1 stop

$632Delta

Find Deal

Wed, Oct 15 - Wed, Oct 29

7:20 pm - 8:51 amICN-STL

27h 31m2 stops

7:30 pm - 4:30 pmSTL-ICN

31h 00m2 stops

$645Delta

Find Deal

Wed, Oct 15 - Wed, Oct 29

11:30 am - 8:46 pmICN-STL

23h 16m2 stops

9:00 am - 4:40 amSTL-ICN

29h 40m2 stops

$662United Airlines

Find Deal

Wed, Oct 15 - Wed, Oct 29

11:45 am - 4:27 pmICN-STL

18h 42m1 stop

4:55 pm - 5:40 amSTL-ICN

21h 45m2 stops

$664United Airlines

Find Deal

Tue, Oct 28 - Tue, Nov 11

10:15 am - 8:34 pmICN-STL

24h 19m1 stop

2:29 pm - 4:40 pmSTL-ICN

36h 11m2 stops

$703

Find Deal

Mon, Sep 29 - Wed, Oct 22

6:40 pm - 11:09 pmICN-STL

18h 29m1 stop

8:53 am - 5:20 pmSTL-ICN

18h 27m1 stop

$708

Find Deal

Mon, Sep 15 - Tue, Oct 14

7:30 pm - 11:02 pmICN-STL

18h 32m1 stop

6:04 am - 3:30 pmSTL-ICN

18h 26m1 stop

$709Korean Air

Find Deal

Wed, Dec 17 - Tue, Dec 30

6:40 pm - 11:09 pmICN-STL

18h 29m1 stop

8:53 am - 5:20 pmSTL-ICN

18h 27m1 stop

$713Korean Air

Find Deal

Fri, Sep 19 - Mon, Oct 20

United Airlines flights from South Korea to St. Louis

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

United Airlines

Oct 15

ICN11:30 amIncheon Intl

23h 16m

2 stops

STL8:46 pmLambert-St Louis

Oct 29

STL9:00 amLambert-St Louis

29h 40m

2 stops

ICN4:40 amIncheon Intl

$662

Find similar

United Airlines

Oct 28

ICN11:45 amIncheon Intl

18h 42m

1 stop

STL4:27 pmLambert-St Louis

Nov 11

STL4:55 pmLambert-St Louis

21h 45m

2 stops

ICN5:40 amIncheon Intl

$664

Find similar

United Airlines

Sep 19

ICN4:50 pmIncheon Intl

31h 12m

2 stops

STL10:02 amLambert-St Louis

Oct 26

STL4:17 pmLambert-St Louis

32h 58m

2 stops

ICN3:15 pmIncheon Intl

$667

Find similar

Qatar Airways flights from South Korea to St. Louis

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

Qatar Airways

Aug 20

ICN1:20 amIncheon Intl

49h 15m

2 stops

STL12:35 pmLambert-St Louis

May 13

STL11:14 amLambert-St Louis

33h 16m

2 stops

ICN10:30 amIncheon Intl

$2,060

Find similar

Qatar Airways

Aug 19

ICN1:20 amIncheon Intl

31h 03m

2 stops

STL6:23 pmLambert-St Louis

May 13

STL11:14 amLambert-St Louis

33h 16m

2 stops

ICN10:30 amIncheon Intl

$2,239

Find similar

Qatar Airways

Aug 24

ICN1:20 amIncheon Intl

33h 02m

2 stops

STL8:22 pmLambert-St Louis

Oct 1

STL9:46 amLambert-St Louis

34h 44m

2 stops

ICN10:30 amIncheon Intl

$2,326

Find similar

Fly from

Fly to

Route

Depart

Return

Price

IncheonSt. Louis

ICN - STL

ICNSTL

Incheon Intl

Fri 9/19

6:00 pm-7:57 pm

1 stop39h 57m

Lambert-St Louis

Mon 10/20

4:05 pm-4:15 pm

2 stops34h 10m

$587

IncheonSt. Louis

ICN - STL

ICNSTL

Incheon Intl

Fri 9/19

6:00 pm-3:18 pm

2 stops35h 18m

Lambert-St Louis

Mon 10/20

4:05 pm-4:15 pm

2 stops34h 10m

$594

IncheonSt. Louis

ICN - STL

ICNSTL

Incheon Intl

Wed 10/15

7:40 pm-12:24 am

1 stop18h 44m

Lambert-St Louis

Wed 10/29

6:40 am-4:50 pm

1 stop20h 10m

$632

IncheonSt. Louis

ICN - STL

ICNSTL

Incheon Intl

Wed 10/15

7:20 pm-8:51 am

2 stops27h 31m

Lambert-St Louis

Wed 10/29

7:30 pm-4:30 pm

2 stops31h 00m

$645

IncheonSt. Louis

ICN - STL

ICNSTL

Incheon Intl

Wed 10/15

11:30 am-8:46 pm

2 stops23h 16m

Lambert-St Louis

Wed 10/29

9:00 am-4:40 am

2 stops29h 40m

$662

IncheonSt. Louis

ICN - STL

ICNSTL

Incheon Intl

Tue 10/28

11:45 am-4:27 pm

1 stop18h 42m

Lambert-St Louis

Tue 11/11

4:55 pm-5:40 am

2 stops21h 45m

$664

IncheonSt. Louis

ICN - STL

ICNSTL

Incheon Intl

Mon 9/29

10:15 am-8:34 pm

1 stop24h 19m

Lambert-St Louis

Wed 10/22

2:29 pm-4:40 pm

2 stops36h 11m

$703

IncheonSt. Louis

ICN - STL

ICNSTL

Incheon Intl

Mon 9/15

6:40 pm-11:09 pm

1 stop18h 29m

Lambert-St Louis

Tue 10/14

8:53 am-5:20 pm

1 stop18h 27m

$708

IncheonSt. Louis

ICN - STL

ICNSTL

Incheon Intl

Wed 12/17

7:30 pm-11:02 pm

1 stop18h 32m

Lambert-St Louis

Tue 12/30

6:04 am-3:30 pm

1 stop18h 26m

$709

IncheonSt. Louis

ICN - STL

ICNSTL

Incheon Intl

Fri 9/19

6:40 pm-11:09 pm

1 stop18h 29m

Lambert-St Louis

Mon 10/20

8:53 am-5:20 pm

1 stop18h 27m

$713

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.

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

Best Price Found	$494
Fastest flight time	17h 24m
Direct flights	None
Airports in St. Louis	1 airport

The best one-way flight to St. Louis from South Korea in the past 72 hours is $494. The best round-trip flight deal from South Korea to St. Louis found on momondo in the last 72 hours is $587.

The fastest flight from South Korea to St. Louis takes 17h 24m

There are no direct flights from South Korea to St. Louis. Popular non-direct routes for this connection are Incheon Intl Airport - Lambert-St Louis Airport and Seoul Gimpo Intl Airport - Lambert-St Louis Airport.

There is 1 airport near St. Louis: Lambert-St Louis (STL)

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 August 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 $687	Free Cancellation	Rating 8.0 7,980 reviews		Search Delta flights

St. Charles

Chesterfield

Fairview Heights

Hermann

Maryland Heights

Florissant

O'Fallon

Fenton

Wentzville

Collinsville

Alton

St. Peters

Farmington

Festus

Glencoe

Eureka

Clayton

Edwardsville

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.