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Cheap flights from St. Louis to South Korea from $586

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 10/31. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
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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.
Qatar Airways Logo
7:00 am - 5:15 pm
STL
-
ICN
43h 15m
2 stops
Qatar Airways Logo
12:20 am - 11:56 pm
ICN
-
STL
38h 36m
2 stops
$1,211Qatar Airways
Mon, Nov 9 - Sun, Nov 15
Air Canada Logo
2:40 pm - 5:30 pm
STL
-
ICN
36h 50m
1 stop
Air Canada Logo
6:00 pm - 6:41 pm
ICN
-
STL
38h 41m
1 stop
$1,256Air Canada
Tue, Sep 22 - Wed, Oct 7
Air Canada Logo
12:10 pm - 4:25 pm
STL
-
ICN
38h 15m
1 stop
Air Canada Logo
5:45 pm - 6:42 pm
ICN
-
STL
38h 57m
2 stops
$1,261Air Canada
Wed, Aug 5 - Thu, Aug 20
Air Canada Logo
2:40 pm - 5:30 pm
STL
-
ICN
36h 50m
1 stop
Air Canada Logo
5:45 pm - 6:42 pm
ICN
-
STL
38h 57m
2 stops
$1,265Air Canada
Tue, Aug 4 - Thu, Aug 20
Asiana Airlines Logo
12:10 pm - 4:25 pm
STL
-
ICN
38h 15m
1 stop
Asiana Airlines Logo
7:05 pm - 2:02 pm
ICN
-
STL
32h 57m
1 stop
$1,269Asiana Airlines
Wed, Aug 5 - Tue, Aug 18
Asiana Airlines Logo
2:40 pm - 5:30 pm
STL
-
ICN
36h 50m
1 stop
Asiana Airlines Logo
7:05 pm - 2:02 pm
ICN
-
STL
32h 57m
1 stop
$1,273Asiana Airlines
Tue, Aug 4 - Wed, Aug 19
Asiana Airlines Logo
12:10 pm - 4:25 pm
STL
-
ICN
38h 15m
1 stop
Asiana Airlines Logo
7:05 pm - 2:02 pm
ICN
-
STL
32h 57m
1 stop
$1,285Asiana Airlines
Wed, Aug 5 - Wed, Aug 19
Japan Airlines Logo
9:31 am - 9:15 pm
STL
-
GMP
21h 44m
2 stops
Japan Airlines Logo
8:00 am - 10:56 am
GMP
-
STL
17h 56m
2 stops
$1,536Japan Airlines
Wed, Aug 19 - Thu, Dec 17
Japan Airlines Logo
7:00 am - 10:05 pm
STL
-
GMP
24h 05m
2 stops
Japan Airlines Logo
12:05 pm - 11:42 pm
GMP
-
STL
26h 37m
2 stops
$1,547Japan Airlines
Mon, Nov 9 - Mon, Nov 16
Delta Logo
6:00 am - 8:45 pm
STL
-
PUS
24h 45m
2 stops
Delta Logo
8:45 am - 9:06 pm
PUS
-
STL
26h 21m
2 stops
$2,324Delta
Wed, May 27 - Sat, May 30

Asiana Airlines flights from St. Louis to South Korea

Our best Asiana Airlines deals on St. Louis to South Korea flight tickets
Asiana Airlines
Aug 5
STL12:10 pmLambert-St Louis
38h 15m
1 stop
ICN4:25 pmIncheon Intl
Aug 18
ICN7:05 pmIncheon Intl
32h 57m
1 stop
STL2:02 pmLambert-St Louis
$1,269
Asiana Airlines
Aug 4
STL2:40 pmLambert-St Louis
36h 50m
1 stop
ICN5:30 pmIncheon Intl
Aug 19
ICN7:05 pmIncheon Intl
32h 57m
1 stop
STL2:02 pmLambert-St Louis
$1,273
Asiana Airlines
Aug 5
STL12:10 pmLambert-St Louis
38h 15m
1 stop
ICN4:25 pmIncheon Intl
Aug 19
ICN7:05 pmIncheon Intl
32h 57m
1 stop
STL2:02 pmLambert-St Louis
$1,285

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
36h 50m
1 stop
ICN5:30 pmIncheon Intl
Oct 7
ICN6:00 pmIncheon Intl
38h 41m
1 stop
STL6:41 pmLambert-St Louis
$1,256
Air Canada
Aug 5
STL12:10 pmLambert-St Louis
38h 15m
1 stop
ICN4:25 pmIncheon Intl
Aug 20
ICN5:45 pmIncheon Intl
38h 57m
2 stops
STL6:42 pmLambert-St Louis
$1,261
Air Canada
Aug 4
STL2:40 pmLambert-St Louis
36h 50m
1 stop
ICN5:30 pmIncheon Intl
Aug 20
ICN5:45 pmIncheon Intl
38h 57m
2 stops
STL6:42 pmLambert-St Louis
$1,265

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 May 14, 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 11/9

7:00 am-5:15 pm

2 stops43h 15m

Incheon Intl

Sun 11/15

12:20 am-11:56 pm

2 stops38h 36m

$1,211

St. LouisIncheon

STL - ICN

STLICN

Lambert-St Louis

Tue 9/22

2:40 pm-5:30 pm

1 stop36h 50m

Incheon Intl

Wed 10/7

6:00 pm-6:41 pm

1 stop38h 41m

$1,256

St. LouisIncheon

STL - ICN

STLICN

Lambert-St Louis

Wed 8/5

12:10 pm-4:25 pm

1 stop38h 15m

Incheon Intl

Thu 8/20

5:45 pm-6:42 pm

2 stops38h 57m

$1,261

St. LouisIncheon

STL - ICN

STLICN

Lambert-St Louis

Tue 8/4

2:40 pm-5:30 pm

1 stop36h 50m

Incheon Intl

Thu 8/20

5:45 pm-6:42 pm

2 stops38h 57m

$1,265

St. LouisIncheon

STL - ICN

STLICN

Lambert-St Louis

Wed 8/5

12:10 pm-4:25 pm

1 stop38h 15m

Incheon Intl

Tue 8/18

7:05 pm-2:02 pm

1 stop32h 57m

$1,269

St. LouisIncheon

STL - ICN

STLICN

Lambert-St Louis

Tue 8/4

2:40 pm-5:30 pm

1 stop36h 50m

Incheon Intl

Wed 8/19

7:05 pm-2:02 pm

1 stop32h 57m

$1,273

St. LouisIncheon

STL - ICN

STLICN

Lambert-St Louis

Wed 8/5

12:10 pm-4:25 pm

1 stop38h 15m

Incheon Intl

Wed 8/19

7:05 pm-2:02 pm

1 stop32h 57m

$1,285
Quickest round-trip

St. LouisSeoul

STL - GMP

STLGMP

Lambert-St Louis

Wed 8/19

9:31 am-9:15 pm

2 stops21h 44m

Seoul Gimpo Intl

Thu 12/17

8:00 am-10:56 am

2 stops17h 56m

$1,536

St. LouisSeoul

STL - GMP

STLGMP

Lambert-St Louis

Mon 11/9

7:00 am-10:05 pm

2 stops24h 05m

Seoul Gimpo Intl

Mon 11/16

12:05 pm-11:42 pm

2 stops26h 37m

$1,547

St. LouisBusan

STL - PUS

STLPUS

Lambert-St Louis

Wed 5/27

6:00 am-8:45 pm

2 stops24h 45m

Busan Gimhae

Sat 5/30

8:45 am-9:06 pm

2 stops26h 21m

$2,324

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 March is also cheap. Prices for this month can be found on momondo for an average of $745.

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

You could potentially save up to 21% 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 50m

Direct flights

None
The fastest flight from St. Louis to South Korea takes 18h 50m
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

Frequently asked questions about flying from St. Louis to South Korea

  • 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 $832Free CancellationRating
7.1
11,664 reviews
Search American Airlines flights
DeltaPriceFrom $846Free CancellationRating
7.9
8,454 reviews
Search Delta flights
United AirlinesPriceFrom $865Free CancellationRating
7.4
9,711 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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