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Cheap flights from St. Louis to South Korea from $533

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 8/7. 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

Discover deals from 900+ travel sites with momondo.

Find the cheapest flights from St. Louis to South Korea

Cheap round-trip flights

Enter your travel dates to find the best prices.
Delta Logo
2:30 pm - 4:00 am
STL
-
ICN
23h 30m
1 stop
Delta Logo
9:35 am - 8:41 pm
ICN
-
STL
26h 06m
1 stop
$1,106Delta
Mon, Oct 5 - Wed, Nov 4
Delta Logo
6:00 am - 5:20 pm
STL
-
ICN
21h 20m
2 stops
Delta Logo
6:45 pm - 11:26 pm
ICN
-
STL
19h 41m
2 stops
$1,111Delta
Mon, Oct 5 - Wed, Nov 4
Multiple Airlines Logo
5:16 pm - 12:40 pm
STL
-
ICN
29h 24m
2 stops
Multiple Airlines Logo
7:35 pm - 9:08 pm
ICN
-
STL
40h 33m
2 stops
$1,120Multiple Airlines
Mon, Sep 28 - Wed, Nov 25
Delta Logo
8:46 am - 5:20 pm
STL
-
ICN
18h 34m
1 stop
Delta Logo
7:40 pm - 11:16 pm
ICN
-
STL
17h 36m
1 stop
$1,156Delta
Wed, Sep 16 - Fri, Sep 25
Delta Logo
6:00 am - 4:25 pm
STL
-
ICN
20h 25m
2 stops
Delta Logo
7:40 pm - 11:16 pm
ICN
-
STL
17h 36m
1 stop
$1,161Delta
Wed, Sep 16 - Fri, Sep 25
Multiple Airlines Logo
7:10 pm - 2:05 pm
STL
-
ICN
28h 55m
2 stops
Multiple Airlines Logo
7:35 pm - 11:46 pm
ICN
-
STL
42h 11m
2 stops
$1,170Multiple Airlines
Fri, Oct 16 - Sun, Oct 25
United Airlines Logo
1:08 pm - 5:40 am
STL
-
ICN
25h 32m
2 stops
United Airlines Logo
12:45 pm - 7:29 pm
ICN
-
STL
21h 44m
2 stops
$1,178United Airlines
Tue, Nov 24 - Fri, Dec 4
Cathay Pacific Logo
9:32 am - 12:40 pm
STL
-
ICN
37h 08m
2 stops
Cathay Pacific Logo
8:00 am - 11:42 pm
ICN
-
STL
29h 42m
2 stops
$1,186Cathay Pacific
Thu, Aug 27 - Mon, Aug 31
Korean Air Logo
3:54 pm - 7:45 am
STL
-
PUS
25h 51m
2 stops
Korean Air Logo
4:30 pm - 11:42 pm
PUS
-
STL
21h 12m
2 stops
$1,768Korean Air
Thu, Sep 10 - Mon, Sep 14
Korean Air Logo
9:47 am - 7:55 pm
STL
-
TAE
20h 08m
2 stops
Korean Air Logo
7:55 am - 1:09 pm
TAE
-
STL
19h 14m
2 stops
$1,816Korean Air
Fri, Oct 16 - Tue, Oct 20

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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 4
STL2:40 pmLambert-St Louis
36h 50m
1 stop
ICN5:30 pmIncheon Intl
Aug 21
ICN5:45 pmIncheon Intl
34h 19m
2 stops
STL2:04 pmLambert-St Louis
$1,305
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
$1,334
Asiana Airlines
Aug 4
STL2:40 pmLambert-St Louis
36h 50m
1 stop
ICN5:30 pmIncheon Intl
Aug 18
ICN7:05 pmIncheon Intl
32h 57m
1 stop
STL2:02 pmLambert-St Louis
$1,339

Delta flights from St. Louis to South Korea

Our best Delta deals on St. Louis to South Korea flight tickets
Delta
Oct 5
STL2:30 pmLambert-St Louis
23h 30m
1 stop
ICN4:00 amIncheon Intl
Nov 4
ICN9:35 amIncheon Intl
26h 06m
1 stop
STL8:41 pmLambert-St Louis
$1,106
Delta
Oct 5
STL6:00 amLambert-St Louis
21h 20m
2 stops
ICN5:20 pmIncheon Intl
Nov 4
ICN6:45 pmIncheon Intl
19h 41m
2 stops
STL11:26 pmLambert-St Louis
$1,111
Delta
Sep 16
STL8:46 amLambert-St Louis
18h 34m
1 stop
ICN5:20 pmIncheon Intl
Sep 25
ICN7:40 pmIncheon Intl
17h 36m
1 stop
STL11:16 pmLambert-St Louis
$1,156

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 July 18, 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 10/5

2:30 pm-4:00 am

1 stop23h 30m

Incheon Intl

Wed 11/4

9:35 am-8:41 pm

1 stop26h 06m

$1,106

St. LouisIncheon

STL - ICN

STLICN

Lambert-St Louis

Mon 10/5

6:00 am-5:20 pm

2 stops21h 20m

Incheon Intl

Wed 11/4

6:45 pm-11:26 pm

2 stops19h 41m

$1,111

St. LouisIncheon

STL - ICN

STLICN

Lambert-St Louis

Mon 9/28

5:16 pm-12:40 pm

2 stops29h 24m

Incheon Intl

Wed 11/25

7:35 pm-9:08 pm

2 stops40h 33m

$1,120
Quickest round-trip

St. LouisIncheon

STL - ICN

STLICN

Lambert-St Louis

Wed 9/16

8:46 am-5:20 pm

1 stop18h 34m

Incheon Intl

Fri 9/25

7:40 pm-11:16 pm

1 stop17h 36m

$1,156

St. LouisIncheon

STL - ICN

STLICN

Lambert-St Louis

Wed 9/16

6:00 am-4:25 pm

2 stops20h 25m

Incheon Intl

Fri 9/25

7:40 pm-11:16 pm

1 stop17h 36m

$1,161

St. LouisIncheon

STL - ICN

STLICN

Lambert-St Louis

Fri 10/16

7:10 pm-2:05 pm

2 stops28h 55m

Incheon Intl

Sun 10/25

7:35 pm-11:46 pm

2 stops42h 11m

$1,170

St. LouisIncheon

STL - ICN

STLICN

Lambert-St Louis

Tue 11/24

1:08 pm-5:40 am

2 stops25h 32m

Incheon Intl

Fri 12/4

12:45 pm-7:29 pm

2 stops21h 44m

$1,178

St. LouisIncheon

STL - ICN

STLICN

Lambert-St Louis

Thu 8/27

9:32 am-12:40 pm

2 stops37h 08m

Incheon Intl

Mon 8/31

8:00 am-11:42 pm

2 stops29h 42m

$1,186

St. LouisBusan

STL - PUS

STLPUS

Lambert-St Louis

Thu 9/10

3:54 pm-7:45 am

2 stops25h 51m

Busan Gimhae

Mon 9/14

4:30 pm-11:42 pm

2 stops21h 12m

$1,768

St. LouisDaegu

STL - TAE

STLTAE

Lambert-St Louis

Fri 10/16

9:47 am-7:55 pm

2 stops20h 08m

Daegu

Tue 10/20

7:55 am-1:09 pm

2 stops19h 14m

$1,816

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 $866.

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

You could potentially save up to 43% 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 10m

Direct flights

None
The fastest flight from St. Louis to South Korea takes 18h 10m
There are no direct flights from St. Louis to South Korea. There are no popular flight routes from St. Louis to South Korea.
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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
DeltaPriceFrom $846Free CancellationRating
7.8
8,476 reviews
Search Delta flights
United AirlinesPriceFrom $865Free CancellationRating
7.4
10,006 reviews
Search United Airlines flights
Korean AirPriceFrom $999Free CancellationRating
8.4
1,221 reviews
Search Korean Air 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.

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