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Cheap flights from Seoul to St. Louis from $574

This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from Seoul to St. Louis departing on 8/16. 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

Find the cheapest flights from Seoul to St. Louis

Cheap round-trip flights

Enter your travel dates to find the best prices.
American Airlines Logo
6:35 pm - 10:37 am
ICN
-
STL
31h 02m
1 stop
American Airlines Logo
6:13 pm - 4:25 pm
STL
-
ICN
31h 12m
1 stop
$1,111American Airlines
Thu, Nov 19 - Sun, Nov 22
American Airlines Logo
6:35 pm - 12:37 pm
ICN
-
STL
33h 02m
1 stop
American Airlines Logo
6:13 pm - 4:25 pm
STL
-
ICN
31h 12m
1 stop
$1,114American Airlines
Thu, Nov 19 - Sun, Nov 22
American Airlines Logo
6:50 pm - 11:58 pm
ICN
-
STL
20h 08m
2 stops
American Airlines Logo
5:14 am - 4:25 pm
STL
-
ICN
20h 11m
1 stop
$1,131American Airlines
Tue, Nov 24 - Thu, Dec 3
American Airlines Logo
6:50 pm - 12:37 pm
ICN
-
STL
32h 47m
1 stop
American Airlines Logo
5:14 am - 4:25 pm
STL
-
ICN
20h 11m
1 stop
$1,134American Airlines
Tue, Nov 24 - Thu, Dec 3
Air Canada Logo
6:55 pm - 3:26 pm
ICN
-
STL
35h 31m
2 stops
Air Canada Logo
4:05 pm - 5:10 pm
STL
-
ICN
34h 05m
2 stops
$1,193Air Canada
Tue, Nov 24 - Thu, Dec 3
Air Canada Logo
6:55 pm - 3:26 pm
ICN
-
STL
35h 31m
2 stops
Air Canada Logo
4:05 pm - 5:10 pm
STL
-
ICN
34h 05m
2 stops
$1,264Air Canada
Thu, Nov 19 - Sun, Nov 22
Japan Airlines Logo
8:00 am - 11:42 pm
GMP
-
STL
30h 42m
2 stops
Japan Airlines Logo
7:00 am - 6:20 pm
STL
-
GMP
44h 20m
2 stops
$1,599Japan Airlines
Thu, Nov 19 - Sun, Nov 22
Japan Airlines Logo
8:00 am - 11:42 pm
GMP
-
STL
30h 42m
2 stops
Japan Airlines Logo
7:00 am - 6:20 pm
STL
-
GMP
44h 20m
2 stops
$1,605Japan Airlines
Thu, Nov 19 - Sun, Nov 22
Multiple Airlines Logo
12:40 pm - 8:24 pm
GMP
-
STL
21h 44m
2 stops
Multiple Airlines Logo
8:55 am - 10:25 pm
STL
-
GMP
23h 30m
2 stops
$1,636Multiple Airlines
Tue, Aug 18 - Tue, Aug 25
Multiple Airlines Logo
8:10 am - 8:24 pm
GMP
-
STL
26h 14m
2 stops
Multiple Airlines Logo
8:55 am - 10:25 pm
STL
-
GMP
23h 30m
2 stops
$1,963Multiple Airlines
Sun, Aug 16 - Sun, Aug 23

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Air Canada flights from Seoul to St. Louis

Our best Air Canada deals on Seoul to St. Louis flight tickets
Air Canada
Nov 24
ICN6:55 pmIncheon Intl
35h 31m
2 stops
STL3:26 pmLambert-St Louis
Dec 3
STL4:05 pmLambert-St Louis
34h 05m
2 stops
ICN5:10 pmIncheon Intl
$1,193
Air Canada
Nov 19
ICN6:55 pmIncheon Intl
35h 31m
2 stops
STL3:26 pmLambert-St Louis
Nov 22
STL4:05 pmLambert-St Louis
34h 05m
2 stops
ICN5:10 pmIncheon Intl
$1,264
Air Canada
Nov 19
ICN6:55 pmIncheon Intl
35h 31m
2 stops
STL3:26 pmLambert-St Louis
Nov 22
STL4:05 pmLambert-St Louis
34h 05m
2 stops
ICN5:10 pmIncheon Intl
$1,268

Japan Airlines flights from Seoul to St. Louis

Our best Japan Airlines deals on Seoul to St. Louis flight tickets
Japan Airlines
Nov 19
GMP8:00 amSeoul Gimpo Intl
30h 42m
2 stops
STL11:42 pmLambert-St Louis
Nov 22
STL7:00 amLambert-St Louis
44h 20m
2 stops
GMP6:20 pmSeoul Gimpo Intl
$1,599
Japan Airlines
Nov 19
GMP8:00 amSeoul Gimpo Intl
30h 42m
2 stops
STL11:42 pmLambert-St Louis
Nov 22
STL7:00 amLambert-St Louis
44h 20m
2 stops
GMP6:20 pmSeoul Gimpo Intl
$1,605
Japan Airlines
Nov 19
GMP8:00 amSeoul Gimpo Intl
30h 42m
2 stops
STL11:42 pmLambert-St Louis
Nov 22
STL7:00 amLambert-St Louis
44h 20m
2 stops
GMP6:20 pmSeoul Gimpo Intl
$1,608

momondo Fare Finder

 
Customize your flight search to find flights from Seoul to St. Louis 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 5, 2026.
Use the filters below to find and compare flights from Seoul to St. Louis that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

IncheonSt. Louis

ICN - STL

ICNSTL

Incheon Intl

Thu 11/19

6:35 pm-10:37 am

1 stop31h 02m

Lambert-St Louis

Sun 11/22

6:13 pm-4:25 pm

1 stop31h 12m

$1,111

IncheonSt. Louis

ICN - STL

ICNSTL

Incheon Intl

Thu 11/19

6:35 pm-12:37 pm

1 stop33h 02m

Lambert-St Louis

Sun 11/22

6:13 pm-4:25 pm

1 stop31h 12m

$1,114
Quickest round-trip

IncheonSt. Louis

ICN - STL

ICNSTL

Incheon Intl

Tue 11/24

6:50 pm-11:58 pm

2 stops20h 08m

Lambert-St Louis

Thu 12/3

5:14 am-4:25 pm

1 stop20h 11m

$1,131

IncheonSt. Louis

ICN - STL

ICNSTL

Incheon Intl

Tue 11/24

6:50 pm-12:37 pm

1 stop32h 47m

Lambert-St Louis

Thu 12/3

5:14 am-4:25 pm

1 stop20h 11m

$1,134

IncheonSt. Louis

ICN - STL

ICNSTL

Incheon Intl

Tue 11/24

6:55 pm-3:26 pm

2 stops35h 31m

Lambert-St Louis

Thu 12/3

4:05 pm-5:10 pm

2 stops34h 05m

$1,193

IncheonSt. Louis

ICN - STL

ICNSTL

Incheon Intl

Thu 11/19

6:55 pm-3:26 pm

2 stops35h 31m

Lambert-St Louis

Sun 11/22

4:05 pm-5:10 pm

2 stops34h 05m

$1,264

SeoulSt. Louis

GMP - STL

GMPSTL

Seoul Gimpo Intl

Thu 11/19

8:00 am-11:42 pm

2 stops30h 42m

Lambert-St Louis

Sun 11/22

7:00 am-6:20 pm

2 stops44h 20m

$1,599

SeoulSt. Louis

GMP - STL

GMPSTL

Seoul Gimpo Intl

Thu 11/19

8:00 am-11:42 pm

2 stops30h 42m

Lambert-St Louis

Sun 11/22

7:00 am-6:20 pm

2 stops44h 20m

$1,605

SeoulSt. Louis

GMP - STL

GMPSTL

Seoul Gimpo Intl

Tue 8/18

12:40 pm-8:24 pm

2 stops21h 44m

Lambert-St Louis

Tue 8/25

8:55 am-10:25 pm

2 stops23h 30m

$1,636

SeoulSt. Louis

GMP - STL

GMPSTL

Seoul Gimpo Intl

Sun 8/16

8:10 am-8:24 pm

2 stops26h 14m

Lambert-St Louis

Sun 8/23

8:55 am-10:25 pm

2 stops23h 30m

$1,963

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 St. Louis from

How to get the cheapest flight ticket from Seoul 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

What is the cheapest month to fly to St. Louis?

In general, April is the cheapest month to fly from Seoul to St. Louis. Due to it being the ‘off-season’ during this time, you can expect flight prices to be around $0. The month of October is another great option to travel to St. Louis, with average flight prices from Seoul averaging around $498.

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

You could potentially save up to 18% on your flight if you consider stops on a Seoul to St. Louis flight.

When to book flights from Seoul to St. Louis

Are you open to changing your travel dates? Check out the ideal times to fly from Seoul to St. Louis according to our flight data. Find out which month and days have the cheapest flights.
Estimated round-trip price

Cheap Seoul to St. Louis (SEL to STL) flight deals and tips

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

Fastest flight time

20h 04m

Direct flights

None
The fastest flight from Seoul to St. Louis takes 20h 04m
There are no direct flights from Seoul to St. Louis. There are no popular flight routes from Seoul to St. Louis.
Search flight deals

Frequently asked questions about flying from Seoul to St. Louis

  • How far is Seoul to Lambert-St Louis by plane?

    The distance between Seoul and Lambert-St Louis is about 6661.9 mi. In terms of flight time, this usually takes a little over 20h 04m.

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

    Prices for flights from Seoul to Lambert-St Louis Airport refresh daily.

  • How old do you have to be to fly from Seoul 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 Seoul to Lambert-St Louis Airport.

  • What documentation or ID do you need to fly to Lambert-St Louis Airport?

    The travel and health documents required for your trip to Lambert-St Louis Airport can vary based on your itinerary and personal situation. As a rule, consider having multiple documents such as a national ID card or driver’s license, and a passport valid for six-months after you plan to arrive at Lambert-St Louis Airport. We always recommend checking with your airline or a trusted third party such as IATA to get advice.

Traveling to a place near St. Louis?

Book flights to St. Louis if you plan to visit one of these locations
St. Charles
Chesterfield
Fairview Heights
Hermann
Maryland Heights
Florissant
O'Fallon
St. Peters
Collinsville
Alton
Fenton
Farmington
Wentzville
Clayton
Festus
Eureka
Litchfield
Edwardsville
Grafton
Shrewsbury

Why use momondo?

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

It is quick and easy to find Seoul 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 Seoul to St. Louis with flexible booking policies on momondo?

Flights from Seoul to St. Louis with flexible booking policies can be found by using the search form above and then selecting our dedicated flexible booking filter, which will highlight only the flights where this policy is applied.

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

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 Seoul to St. Louis.

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

Yes. momondo can track prices for Seoul to St. Louis flights and alert you when they change. Perform a search to set up the price alert. All that is required is a valid email address.

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