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Cheap flights from St. Louis to South Korea from $498

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 4/7. 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

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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.
United Airlines Logo
7:05 pm - 4:20 am
STL
-
ICN
19h 15m
1 stop
United Airlines Logo
4:50 pm - 5:47 am
ICN
-
STL
26h 57m
1 stop
$966United Airlines
Mon, Apr 20 - Mon, May 4
United Airlines Logo
4:49 pm - 4:20 am
STL
-
ICN
21h 31m
2 stops
United Airlines Logo
4:50 pm - 5:47 am
ICN
-
STL
26h 57m
1 stop
$971United Airlines
Mon, Apr 20 - Mon, May 4
Air Canada Logo
2:40 pm - 4:05 pm
STL
-
ICN
35h 25m
2 stops
Air Canada Logo
7:05 pm - 2:00 pm
ICN
-
STL
32h 55m
1 stop
$984Air Canada
Tue, Sep 22 - Mon, Sep 28
Asiana Airlines Logo
4:49 pm - 4:20 am
STL
-
ICN
21h 31m
2 stops
Asiana Airlines Logo
4:50 pm - 9:30 am
ICN
-
STL
30h 40m
2 stops
$991Asiana Airlines
Mon, Apr 20 - Mon, May 4
Air Canada Logo
8:55 am - 5:30 pm
STL
-
ICN
18h 35m
1 stop
Air Canada Logo
7:05 pm - 2:00 pm
ICN
-
STL
32h 55m
1 stop
$1,021Air Canada
Thu, Sep 17 - Fri, Sep 25
Air Canada Logo
8:55 am - 5:30 pm
STL
-
ICN
18h 35m
1 stop
Air Canada Logo
6:00 pm - 2:00 pm
ICN
-
STL
34h 00m
2 stops
$1,024Air Canada
Thu, Sep 17 - Fri, Sep 25
Delta Logo
6:48 am - 4:25 pm
STL
-
ICN
19h 37m
1 stop
Delta Logo
7:20 pm - 12:25 am
ICN
-
STL
19h 05m
1 stop
$1,066Delta
Wed, Apr 15 - Wed, Apr 22
Japan Airlines Logo
6:21 am - 10:40 am
STL
-
GMP
38h 19m
2 stops
Japan Airlines Logo
7:15 pm - 2:03 pm
GMP
-
STL
32h 48m
2 stops
$1,421Japan Airlines
Sat, Apr 18 - Sun, Apr 26
Japan Airlines Logo
8:54 am - 10:40 am
STL
-
GMP
35h 46m
2 stops
Japan Airlines Logo
7:15 pm - 2:03 pm
GMP
-
STL
32h 48m
2 stops
$1,509Japan Airlines
Thu, Apr 16 - Wed, Apr 22
Delta Logo
6:00 am - 6:20 pm
STL
-
PUS
22h 20m
2 stops
Delta Logo
7:00 am - 11:56 pm
PUS
-
STL
30h 56m
2 stops
$1,845Delta
Tue, Jun 2 - Fri, Jul 3

United Airlines flights from St. Louis to South Korea

Our best United Airlines deals on St. Louis to South Korea flight tickets
United Airlines
Apr 20
STL7:05 pmLambert-St Louis
19h 15m
1 stop
ICN4:20 amIncheon Intl
May 4
ICN4:50 pmIncheon Intl
26h 57m
1 stop
STL5:47 amLambert-St Louis
$966
United Airlines
Apr 20
STL4:49 pmLambert-St Louis
21h 31m
2 stops
ICN4:20 amIncheon Intl
May 4
ICN4:50 pmIncheon Intl
26h 57m
1 stop
STL5:47 amLambert-St Louis
$971
United Airlines
Apr 16
STL7:05 pmLambert-St Louis
19h 15m
1 stop
ICN4:20 amIncheon Intl
Apr 22
ICN4:50 pmIncheon Intl
29h 35m
2 stops
STL8:25 amLambert-St Louis
$1,090

Air Canada flights from St. Louis to South Korea

Our best Air Canada deals on St. Louis to South Korea flight tickets
Air Canada
Sep 22
STL2:40 pmLambert-St Louis
35h 25m
2 stops
ICN4:05 pmIncheon Intl
Sep 28
ICN7:05 pmIncheon Intl
32h 55m
1 stop
STL2:00 pmLambert-St Louis
$984
Air Canada
Sep 17
STL8:55 amLambert-St Louis
18h 35m
1 stop
ICN5:30 pmIncheon Intl
Sep 25
ICN7:05 pmIncheon Intl
32h 55m
1 stop
STL2:00 pmLambert-St Louis
$1,021
Air Canada
Sep 17
STL8:55 amLambert-St Louis
18h 35m
1 stop
ICN5:30 pmIncheon Intl
Sep 25
ICN6:00 pmIncheon Intl
34h 00m
2 stops
STL2:00 pmLambert-St Louis
$1,024

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 March 30, 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

Cheapest round-trip

St. LouisIncheon

STL - ICN

STLICN

Lambert-St Louis

Mon 4/20

7:05 pm-4:20 am

1 stop19h 15m

Incheon Intl

Mon 5/4

4:50 pm-5:47 am

1 stop26h 57m

$966

St. LouisIncheon

STL - ICN

STLICN

Lambert-St Louis

Mon 4/20

4:49 pm-4:20 am

2 stops21h 31m

Incheon Intl

Mon 5/4

4:50 pm-5:47 am

1 stop26h 57m

$971

St. LouisIncheon

STL - ICN

STLICN

Lambert-St Louis

Tue 9/22

2:40 pm-4:05 pm

2 stops35h 25m

Incheon Intl

Mon 9/28

7:05 pm-2:00 pm

1 stop32h 55m

$984

St. LouisIncheon

STL - ICN

STLICN

Lambert-St Louis

Mon 4/20

4:49 pm-4:20 am

2 stops21h 31m

Incheon Intl

Mon 5/4

4:50 pm-9:30 am

2 stops30h 40m

$991

St. LouisIncheon

STL - ICN

STLICN

Lambert-St Louis

Thu 9/17

8:55 am-5:30 pm

1 stop18h 35m

Incheon Intl

Fri 9/25

7:05 pm-2:00 pm

1 stop32h 55m

$1,021

St. LouisIncheon

STL - ICN

STLICN

Lambert-St Louis

Thu 9/17

8:55 am-5:30 pm

1 stop18h 35m

Incheon Intl

Fri 9/25

6:00 pm-2:00 pm

2 stops34h 00m

$1,024
Quickest round-trip

St. LouisIncheon

STL - ICN

STLICN

Lambert-St Louis

Wed 4/15

6:48 am-4:25 pm

1 stop19h 37m

Incheon Intl

Wed 4/22

7:20 pm-12:25 am

1 stop19h 05m

$1,066

St. LouisSeoul

STL - GMP

STLGMP

Lambert-St Louis

Sat 4/18

6:21 am-10:40 am

2 stops38h 19m

Seoul Gimpo Intl

Sun 4/26

7:15 pm-2:03 pm

2 stops32h 48m

$1,421

St. LouisSeoul

STL - GMP

STLGMP

Lambert-St Louis

Thu 4/16

8:54 am-10:40 am

2 stops35h 46m

Seoul Gimpo Intl

Wed 4/22

7:15 pm-2:03 pm

2 stops32h 48m

$1,509

St. LouisBusan

STL - PUS

STLPUS

Lambert-St Louis

Tue 6/2

6:00 am-6:20 pm

2 stops22h 20m

Busan Gimhae

Fri 7/3

7:00 am-11:56 pm

2 stops30h 56m

$1,845

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 February, then flying in October is also cheap. Prices for this month can be found on momondo for an average of $865.

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 week ahead of your departure date. In general, you can expect to find flights to South Korea for around $1,153 when searching week 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 $936 on momondo.

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

You could potentially save up to 10% 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

17h 35m

Direct flights

None
The fastest flight from St. Louis to South Korea takes 17h 35m
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
American AirlinesPriceFrom $846Free CancellationRating
7.1
11,529 reviews
Search American Airlines flights
DeltaPriceFrom $846Free CancellationRating
7.9
8,359 reviews
Search Delta flights
United AirlinesPriceFrom $865Free CancellationRating
7.4
9,515 reviews
Search United Airlines flights
Air CanadaPriceFrom $1,083Free CancellationRating
7.1
10,862 reviews
Search Air Canada 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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