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Cheap flights from Seoul to St. Louis from $462

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 6/16. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
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0 bags

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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
7:15 pm - 11:01 am
ICN
-
STL
30h 46m
1 stop
American Airlines Logo
6:57 pm - 4:45 pm
STL
-
ICN
30h 48m
2 stops
$764American Airlines
Mon, Feb 23 - Sun, Mar 1
Air Canada Logo
5:45 pm - 12:06 pm
ICN
-
STL
32h 21m
2 stops
Air Canada Logo
1:00 pm - 4:05 pm
STL
-
ICN
37h 05m
2 stops
$827Air Canada
Tue, May 5 - Sun, May 10
Air Canada Logo
5:45 pm - 12:06 pm
ICN
-
STL
32h 21m
2 stops
Air Canada Logo
5:20 am - 4:05 pm
STL
-
ICN
20h 45m
2 stops
$864Air Canada
Wed, May 27 - Mon, Aug 31
Air Canada Logo
5:45 pm - 12:06 pm
ICN
-
STL
32h 21m
2 stops
Air Canada Logo
5:20 am - 4:05 pm
STL
-
ICN
20h 45m
2 stops
$866Air Canada
Wed, May 27 - Mon, Aug 31
Air Canada Logo
5:45 pm - 8:54 pm
ICN
-
STL
41h 09m
2 stops
Air Canada Logo
6:05 pm - 4:05 pm
STL
-
ICN
32h 00m
2 stops
$942Air Canada
Mon, Apr 13 - Mon, Apr 20
Air Canada Logo
5:45 pm - 8:54 pm
ICN
-
STL
41h 09m
2 stops
Air Canada Logo
4:05 pm - 4:05 pm
STL
-
ICN
34h 00m
2 stops
$944Air Canada
Mon, Apr 13 - Sun, Apr 19
ANA Logo
7:55 pm - 2:16 pm
GMP
-
STL
32h 21m
2 stops
ANA Logo
9:23 am - 10:20 pm
STL
-
GMP
22h 57m
2 stops
$1,333ANA
Wed, May 27 - Mon, Aug 31
Japan Airlines Logo
8:00 am - 11:57 pm
GMP
-
STL
29h 57m
2 stops
Japan Airlines Logo
12:25 pm - 9:15 pm
STL
-
GMP
18h 50m
2 stops
$1,358Japan Airlines
Tue, Apr 7 - Thu, May 7
Japan Airlines Logo
8:00 am - 2:01 pm
GMP
-
STL
20h 01m
2 stops
Japan Airlines Logo
7:12 am - 5:55 pm
STL
-
GMP
20h 43m
2 stops
$1,423Japan Airlines
Sat, Apr 11 - Tue, Apr 21
Japan Airlines Logo
7:15 pm - 2:01 pm
GMP
-
STL
32h 46m
2 stops
Japan Airlines Logo
7:12 am - 5:55 pm
STL
-
GMP
20h 43m
2 stops
$1,425Japan Airlines
Sat, Apr 11 - Tue, Apr 21

Air Canada flights from Seoul to St. Louis

Our best Air Canada deals on Seoul to St. Louis flight tickets
Air Canada
May 5
ICN5:45 pmIncheon Intl
32h 21m
2 stops
STL12:06 pmLambert-St Louis
May 10
STL1:00 pmLambert-St Louis
37h 05m
2 stops
ICN4:05 pmIncheon Intl
$827
Air Canada
May 27
ICN5:45 pmIncheon Intl
32h 21m
2 stops
STL12:06 pmLambert-St Louis
Aug 31
STL5:20 amLambert-St Louis
20h 45m
2 stops
ICN4:05 pmIncheon Intl
$864
Air Canada
May 27
ICN5:45 pmIncheon Intl
32h 21m
2 stops
STL12:06 pmLambert-St Louis
Aug 31
STL5:20 amLambert-St Louis
20h 45m
2 stops
ICN4:05 pmIncheon Intl
$866

Japan Airlines flights from Seoul to St. Louis

Our best Japan Airlines deals on Seoul to St. Louis flight tickets
Japan Airlines
Apr 7
GMP8:00 amSeoul Gimpo Intl
29h 57m
2 stops
STL11:57 pmLambert-St Louis
May 7
STL12:25 pmLambert-St Louis
18h 50m
2 stops
GMP9:15 pmSeoul Gimpo Intl
$1,358
Japan Airlines
Apr 11
GMP8:00 amSeoul Gimpo Intl
20h 01m
2 stops
STL2:01 pmLambert-St Louis
Apr 21
STL7:12 amLambert-St Louis
20h 43m
2 stops
GMP5:55 pmSeoul Gimpo Intl
$1,423
Japan Airlines
Apr 11
GMP7:15 pmSeoul Gimpo Intl
32h 46m
2 stops
STL2:01 pmLambert-St Louis
Apr 21
STL7:12 amLambert-St Louis
20h 43m
2 stops
GMP5:55 pmSeoul Gimpo Intl
$1,425

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 February 13, 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

IncheonSt. Louis

ICN - STL

ICNSTL

Incheon Intl

Mon 2/23

7:15 pm-11:01 am

1 stop30h 46m

Lambert-St Louis

Sun 3/1

6:57 pm-4:45 pm

2 stops30h 48m

$764

IncheonSt. Louis

ICN - STL

ICNSTL

Incheon Intl

Tue 5/5

5:45 pm-12:06 pm

2 stops32h 21m

Lambert-St Louis

Sun 5/10

1:00 pm-4:05 pm

2 stops37h 05m

$827

IncheonSt. Louis

ICN - STL

ICNSTL

Incheon Intl

Wed 5/27

5:45 pm-12:06 pm

2 stops32h 21m

Lambert-St Louis

Mon 8/31

5:20 am-4:05 pm

2 stops20h 45m

$864

IncheonSt. Louis

ICN - STL

ICNSTL

Incheon Intl

Wed 5/27

5:45 pm-12:06 pm

2 stops32h 21m

Lambert-St Louis

Mon 8/31

5:20 am-4:05 pm

2 stops20h 45m

$866

IncheonSt. Louis

ICN - STL

ICNSTL

Incheon Intl

Mon 4/13

5:45 pm-8:54 pm

2 stops41h 09m

Lambert-St Louis

Mon 4/20

6:05 pm-4:05 pm

2 stops32h 00m

$942

IncheonSt. Louis

ICN - STL

ICNSTL

Incheon Intl

Mon 4/13

5:45 pm-8:54 pm

2 stops41h 09m

Lambert-St Louis

Sun 4/19

4:05 pm-4:05 pm

2 stops34h 00m

$944

SeoulSt. Louis

GMP - STL

GMPSTL

Seoul Gimpo Intl

Wed 5/27

7:55 pm-2:16 pm

2 stops32h 21m

Lambert-St Louis

Mon 8/31

9:23 am-10:20 pm

2 stops22h 57m

$1,333

SeoulSt. Louis

GMP - STL

GMPSTL

Seoul Gimpo Intl

Tue 4/7

8:00 am-11:57 pm

2 stops29h 57m

Lambert-St Louis

Thu 5/7

12:25 pm-9:15 pm

2 stops18h 50m

$1,358

SeoulSt. Louis

GMP - STL

GMPSTL

Seoul Gimpo Intl

Sat 4/11

8:00 am-2:01 pm

2 stops20h 01m

Lambert-St Louis

Tue 4/21

7:12 am-5:55 pm

2 stops20h 43m

$1,423

SeoulSt. Louis

GMP - STL

GMPSTL

Seoul Gimpo Intl

Sat 4/11

7:15 pm-2:01 pm

2 stops32h 46m

Lambert-St Louis

Tue 4/21

7:12 am-5:55 pm

2 stops20h 43m

$1,425

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

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

You could potentially save up to 13% 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

17h 24m

Direct flights

None
The fastest flight from Seoul to St. Louis takes 17h 24m
There are no direct flights from Seoul to St. Louis. There are no popular flight routes from Seoul to St. Louis.
Search flight deals

  • 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 17h 24m.

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

  • 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.

Best airlines flying from Seoul to St. Louis

Compare and see reviews for airlines that fly from Seoul to St. Louis with momondo
Airline
Rating
Free Cancellation
Price
American AirlinesPriceFrom $568Free CancellationRating
7.2
11,278 reviews
Search American Airlines flights
DeltaPriceFrom $630Free CancellationRating
7.9
8,193 reviews
Search Delta flights

Traveling to a place near St. Louis?

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