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Cheap flights from St. Louis to South Korea from $379

This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from St. Louis to South Korea departing on 2/13. 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
0 bags

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Find the cheapest flights from St. Louis to South Korea

Cheap round-trip flights

Enter your travel dates to find the best prices.
Multiple Airlines Logo
7:00 am - 6:35 pm
STL
-
ICN
20h 35m
1 stop
Multiple Airlines Logo
8:35 pm - 11:59 pm
ICN
-
STL
17h 24m
1 stop
$753Multiple Airlines
Thu, Mar 5 - Sun, Mar 15
Multiple Airlines Logo
7:00 am - 6:35 pm
STL
-
ICN
21h 35m
1 stop
Multiple Airlines Logo
7:35 pm - 11:59 pm
ICN
-
STL
18h 24m
1 stop
$847Multiple Airlines
Thu, Apr 16 - Wed, Apr 22
United Airlines Logo
8:46 am - 4:20 am
STL
-
ICN
29h 34m
2 stops
United Airlines Logo
4:50 pm - 5:47 am
ICN
-
STL
26h 57m
1 stop
$851United Airlines
Sat, May 2 - Fri, May 15
United Airlines Logo
8:30 am - 3:00 pm
STL
-
ICN
40h 30m
1 stop
United Airlines Logo
4:50 pm - 5:47 am
ICN
-
STL
26h 57m
1 stop
$854United Airlines
Sat, May 2 - Fri, May 15
Delta Logo
6:20 am - 5:20 pm
STL
-
ICN
21h 00m
1 stop
Delta Logo
7:40 pm - 11:01 pm
ICN
-
STL
17h 21m
1 stop
$867Delta
Tue, May 5 - Sat, May 9
Japan Airlines Logo
8:53 am - 10:45 am
STL
-
GMP
35h 52m
2 stops
Japan Airlines Logo
7:55 am - 10:14 pm
GMP
-
STL
28h 19m
2 stops
$1,172Japan Airlines
Thu, Apr 16 - Wed, Apr 22
Korean Air Logo
6:35 am - 8:45 pm
STL
-
PUS
23h 10m
2 stops
Korean Air Logo
12:00 pm - 11:23 pm
PUS
-
STL
26h 23m
2 stops
$1,218Korean Air
Sun, Feb 15 - Thu, Feb 19
Korean Air Logo
6:35 am - 7:35 pm
STL
-
PUS
22h 00m
2 stops
Korean Air Logo
7:55 am - 8:41 pm
PUS
-
STL
27h 46m
2 stops
$1,219Korean Air
Sun, Feb 15 - Thu, Feb 19
Japan Airlines Logo
6:20 am - 9:50 pm
STL
-
GMP
25h 30m
2 stops
Japan Airlines Logo
7:55 am - 1:59 pm
GMP
-
STL
20h 04m
2 stops
$1,268Japan Airlines
Sun, Apr 19 - Tue, Apr 28
Delta Logo
6:59 pm - 8:45 pm
STL
-
PUS
35h 46m
2 stops
Delta Logo
12:00 pm - 9:02 am
PUS
-
STL
35h 02m
2 stops
$1,508Delta
Fri, Mar 13 - Fri, Mar 20

United Airlines flights from St. Louis to South Korea

Our best United Airlines deals on St. Louis to South Korea flight tickets
United Airlines
May 2
STL4:15 pmLambert-St Louis
22h 05m
2 stops
ICN4:20 amIncheon Intl
May 12
ICN11:30 amIncheon Intl
20h 52m
1 stop
STL6:22 pmLambert-St Louis
$851
United Airlines
May 2
STL8:30 amLambert-St Louis
40h 30m
1 stop
ICN3:00 pmIncheon Intl
May 11
ICN4:50 pmIncheon Intl
26h 57m
1 stop
STL5:47 amLambert-St Louis
$854
United Airlines
May 3
STL8:30 amLambert-St Louis
29h 50m
1 stop
ICN4:20 amIncheon Intl
May 15
ICN11:30 amIncheon Intl
19h 27m
2 stops
STL4:57 pmLambert-St Louis
$859

Delta flights from St. Louis to South Korea

Our best Delta deals on St. Louis to South Korea flight tickets
Delta
Apr 16
STL7:02 amLambert-St Louis
18h 18m
1 stop
ICN3:20 pmIncheon Intl
Apr 22
ICN4:25 pmIncheon Intl
21h 09m
1 stop
STL11:34 pmLambert-St Louis
$847
Delta
May 5
STL6:20 amLambert-St Louis
21h 00m
1 stop
ICN5:20 pmIncheon Intl
May 9
ICN7:40 pmIncheon Intl
17h 21m
1 stop
STL11:01 pmLambert-St Louis
$867
Delta
Apr 19
STL6:00 amLambert-St Louis
21h 20m
2 stops
ICN5:20 pmIncheon Intl
Apr 26
ICN7:20 pmIncheon Intl
19h 05m
1 stop
STL12:25 amLambert-St Louis
$987

momondo Fare Finder

 
Customize your flight search to find flights from St. Louis to South Korea 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 January 29, 2026.
Use the filters below to find and compare flights from St. Louis to South Korea that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

St. LouisIncheon

STL - ICN

STLICN

Lambert-St Louis

Thu 3/5

7:00 am-6:35 pm

1 stop20h 35m

Incheon Intl

Sun 3/15

8:35 pm-11:59 pm

1 stop17h 24m

$753

St. LouisIncheon

STL - ICN

STLICN

Lambert-St Louis

Thu 4/16

7:00 am-6:35 pm

1 stop21h 35m

Incheon Intl

Wed 4/22

7:35 pm-11:59 pm

1 stop18h 24m

$847

St. LouisIncheon

STL - ICN

STLICN

Lambert-St Louis

Sat 5/2

8:46 am-4:20 am

2 stops29h 34m

Incheon Intl

Fri 5/15

4:50 pm-5:47 am

1 stop26h 57m

$851

St. LouisIncheon

STL - ICN

STLICN

Lambert-St Louis

Sat 5/2

8:30 am-3:00 pm

1 stop40h 30m

Incheon Intl

Fri 5/15

4:50 pm-5:47 am

1 stop26h 57m

$854

St. LouisIncheon

STL - ICN

STLICN

Lambert-St Louis

Tue 5/5

6:20 am-5:20 pm

1 stop21h 00m

Incheon Intl

Sat 5/9

7:40 pm-11:01 pm

1 stop17h 21m

$867

St. LouisSeoul

STL - GMP

STLGMP

Lambert-St Louis

Thu 4/16

8:53 am-10:45 am

2 stops35h 52m

Seoul Gimpo Intl

Wed 4/22

7:55 am-10:14 pm

2 stops28h 19m

$1,172

St. LouisBusan

STL - PUS

STLPUS

Lambert-St Louis

Sun 2/15

6:35 am-8:45 pm

2 stops23h 10m

Busan Gimhae

Thu 2/19

12:00 pm-11:23 pm

2 stops26h 23m

$1,218

St. LouisBusan

STL - PUS

STLPUS

Lambert-St Louis

Sun 2/15

6:35 am-7:35 pm

2 stops22h 00m

Busan Gimhae

Thu 2/19

7:55 am-8:41 pm

2 stops27h 46m

$1,219

St. LouisSeoul

STL - GMP

STLGMP

Lambert-St Louis

Sun 4/19

6:20 am-9:50 pm

2 stops25h 30m

Seoul Gimpo Intl

Tue 4/28

7:55 am-1:59 pm

2 stops20h 04m

$1,268

St. LouisBusan

STL - PUS

STLPUS

Lambert-St Louis

Fri 3/13

6:59 pm-8:45 pm

2 stops35h 46m

Busan Gimhae

Fri 3/20

12:00 pm-9:02 am

2 stops35h 02m

$1,508

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 South Korea from

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

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 South Korea?

If you aren’t able to travel to South Korea during the month of October, then flying in January is also cheap. Prices for this month can be found on momondo for an average of $866.

How far in advance should I book a flight to South Korea?

You are more likely to see cheaper flights to South Korea from St. Louis when booking weeks ahead of your departure date. In general, you can expect to find flights to South Korea for around $1,098 when searching weeks out. However, flight prices might be lower outside of this timeframe. For example, people recently found flights to South Korea from St. Louis for as low as $1,048 on momondo.

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

You could potentially save up to 13% on your flight if you consider stops on a St. Louis to South Korea flight.

Cheap St. Louis to South Korea flight deals and tips

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

Fastest flight time

18h 45m

Direct flights

None
The fastest flight from St. Louis to South Korea takes 18h 45m
There are no direct flights from St. Louis to South Korea. There are no popular flight routes from St. Louis to South Korea.
Search flight deals

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

    Prices for flights from Lambert-St Louis Airport to South Korea were last updated today.

  • How many operators does momondo search for flights from Lambert-St Louis Airport to South Korea?

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

    The minimum age a child must be to fly alone is five but airlines that offer an unaccompanied minor (UNMR) service will have their own age restrictions, including rules around flight length, timings, and stopovers. We always recommend checking with the individual airline you are booking with to travel from Lambert-St Louis Airport to South Korea.

  • What documentation or ID do you need to fly to South Korea?

    The necessary travel and health documents for your South Korea trip may vary depending on your travel plans and individual circumstances. Generally, you should have various documents, such as a national ID card or driver's license and a passport that is valid for six months beyond your scheduled arrival date. We recommend seeking advice from your airline or a trusted third party, such as IATA.

Best airlines flying from St. Louis to South Korea

Compare and see reviews for airlines that fly from St. Louis to South Korea with momondo
Airline
Rating
Free Cancellation
Price
Air CanadaPriceFrom $799Free CancellationRating
7.1
10,667 reviews
Search Air Canada flights
American AirlinesPriceFrom $846Free CancellationRating
7.2
11,206 reviews
Search American Airlines flights
DeltaPriceFrom $846Free CancellationRating
7.9
8,127 reviews
Search Delta flights
United AirlinesPriceFrom $870Free CancellationRating
7.4
9,215 reviews
Search United Airlines flights

Why use momondo?

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

momondo compares prices from hundreds of airlines and agents so you can find and book the best deal on flights from St. Louis to South Korea. Millions of users trust and use momondo every year so you are in good hands.

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

Yes. momondo enables you to select and highlight flights to South Korea from St. Louis with this policy.

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

momondo offers useful filters to help you find the right flight. Choose specific flight times, airports or even what payment method you prefer. We have numerous options to help you book your ideal flight from St. Louis to South Korea.

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

Price alerts on flights to South Korea from St. Louis are quick and easy to set up on momondo. Simply perform a search and select the price alert feature. It is as simple as that.

An easier way to manage your South Korea trip

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