Which layover airport offers the lowest fares from St. Louis to Seoul?

Flights via Minneapolis (MSP) offer the lowest average round-trip price of $916.

What airlines fly to Seoul?

Delta, United Airlines and Korean Air are the top three most popular airlines that fly to Seoul from St. Louis according to our data. Delta is the first choice among our users, with 61% of people opting to fly with this airline when traveling to Seoul. Keep in mind that there are 5 different airlines that fly to Seoul on a routine basis, so you have a few additional options to choose from.

Which layover airport has the shortest travel time from St. Louis to Seoul?

Flights connecting via Atlanta (ATL) have the shortest average one-way travel time: 18h 11m.

Which airport is the most popular layover for flights between St. Louis and Seoul?

Atlanta (ATL) was the most common stop: 33% of momondo users choosing 1-stop flights on this route connected there.

What is the cheapest airline that flies from Lambert-St Louis to Seoul?

Delta and Japan Airlines are the most popular carriers operating from Lambert-St Louis to Seoul

Which layover airport has the shortest connection time from St. Louis to Seoul?

Seattle (SEA) has the shortest average layover time for this route: 2h 03m.

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

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

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

As of November 2026, there are 5 operators available to choose from for flights from Lambert-St Louis Airport to Seoul.

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

The minimum age for a child to fly alone is five, but airlines that offer an unaccompanied minor (UNMR) service may have their own age limitations. Flight duration, scheduling, and layovers are among the considerations that may influence age limits. We recommend that you double-check with the airline you are booking with for travel from Lambert-St Louis Airport to Seoul.

What documentation or ID do you need to fly to Seoul?

The required travel and health documents for your Seoul trip may vary depending on your itinerary and personal circumstances. As a general rule, you should carry multiple documents, including a national ID card or driver's license and a passport valid for six months after your intended arrival at Seoul. We recommend that you seek guidance from your airline or a reliable third party such as IATA.

$532 Cheap Flights from St. Louis to Seoul in 2026/27

Discover deals from 900+ travel sites with momondo.

Find the cheapest flights from St. Louis to Seoul

Round-trip

One-way

Last minute

Cheap round-trip flights

Enter your travel dates to find the best prices.

12:27 pm - 12:40 pmSTL Lambert-St Louis-ICN Incheon Intl

34h 13m2 stops Chicago O'Hare Intl Hong Kong Intl

8:00 am - 11:59 pmICN Incheon Intl-STL Lambert-St Louis

29h 59m2 stops Hong Kong Intl Los Angeles

$1,092Multiple Airlines

Thu, Apr 8 - Tue, Apr 20

10:25 am - 12:45 pmSTL Lambert-St Louis-ICN Incheon Intl

35h 20m2 stops Chicago O'Hare Intl Hong Kong Intl

1:55 am - 5:19 pmICN Incheon Intl-STL Lambert-St Louis

29h 24m2 stops Hong Kong Intl Chicago O'Hare Intl

$1,092Multiple Airlines

Thu, Mar 4 - Sun, Mar 14

6:20 am - 4:50 pmSTL Lambert-St Louis-ICN Incheon Intl

19h 30m1 stop Detroit Metropolitan Wayne County

5:40 pm - 8:49 pmICN Incheon Intl-STL Lambert-St Louis

18h 09m1 stop Atlanta Hartsfield-Jackson

$1,096Delta

Mon, Feb 1 - Mon, Feb 22

7:05 pm - 2:10 pmSTL Lambert-St Louis-ICN Incheon Intl

29h 05m1 stop Atlanta Hartsfield-Jackson

7:20 pm - 12:36 amICN Incheon Intl-STL Lambert-St Louis

19h 16m1 stop Salt Lake City

$1,096Delta

Wed, Apr 7 - Tue, Apr 20

6:06 am - 4:25 pmSTL Lambert-St Louis-ICN Incheon Intl

19h 19m1 stop Newark

12:45 pm - 6:17 pmICN Incheon Intl-STL Lambert-St Louis

20h 32m1 stop San Francisco

$1,096United Airlines

Mon, Feb 1 - Mon, Feb 22

6:00 am - 4:25 pmSTL Lambert-St Louis-ICN Incheon Intl

19h 25m1 stop Newark

6:30 pm - 10:59 pmICN Incheon Intl-STL Lambert-St Louis

19h 29m1 stop Newark

$1,097United Airlines

Tue, Dec 8 - Mon, Dec 21

5:50 am - 4:45 pmSTL Lambert-St Louis-ICN Incheon Intl

19h 55m1 stop Dallas/Fort Worth

6:50 pm - 12:16 amICN Incheon Intl-STL Lambert-St Louis

20h 26m1 stop Dallas/Fort Worth

$1,097American Airlines

Wed, Dec 9 - Wed, Dec 23

6:00 am - 4:45 pmSTL Lambert-St Louis-ICN Incheon Intl

19h 45m1 stop Dallas/Fort Worth

6:50 pm - 9:59 pmICN Incheon Intl-STL Lambert-St Louis

18h 09m1 stop Dallas/Fort Worth

$1,237American Airlines

Mon, Nov 23 - Mon, Nov 30

4:05 pm - 5:10 pmSTL Lambert-St Louis-ICN Incheon Intl

34h 05m2 stops Toronto Pearson Intl Vancouver Intl

6:55 pm - 3:26 pmICN Incheon Intl-STL Lambert-St Louis

59h 31m2 stops Vancouver Intl Toronto Pearson Intl

$1,593Air Canada

Tue, Nov 24 - Sun, Nov 29

4:05 pm - 5:10 pmSTL Lambert-St Louis-ICN Incheon Intl

58h 05m2 stops Toronto Pearson Intl Vancouver Intl

6:55 pm - 3:26 pmICN Incheon Intl-STL Lambert-St Louis

59h 31m2 stops Vancouver Intl Toronto Pearson Intl

$1,640Air Canada

Sat, Dec 5 - Wed, Dec 9

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United Airlines flights from St. Louis to Seoul

Our best United Airlines deals on St. Louis to Seoul flight tickets

United Airlines

Dec 7

STL6:00 amLambert-St Louis

19h 25m

1 stop

ICN4:25 pmIncheon Intl

Dec 21

ICN12:45 pmIncheon Intl

23h 23m

2 stops

STL9:08 pmLambert-St Louis

$1,101

United Airlines

Nov 24

STL4:39 pmLambert-St Louis

22h 01m

2 stops

ICN5:40 amIncheon Intl

Dec 4

ICN12:45 pmIncheon Intl

20h 26m

1 stop

STL6:11 pmLambert-St Louis

$1,151

United Airlines

Mar 6

STL5:34 pmLambert-St Louis

31h 51m

2 stops

ICN4:25 pmIncheon Intl

Mar 14

ICN6:00 pmIncheon Intl

28h 19m

2 stops

STL8:19 amLambert-St Louis

$1,201

Delta flights from St. Louis to Seoul

Our best Delta deals on St. Louis to Seoul flight tickets

Delta

Feb 1

STL6:20 amLambert-St Louis

19h 30m

1 stop

ICN4:50 pmIncheon Intl

Feb 22

ICN5:40 pmIncheon Intl

18h 09m

1 stop

STL8:49 pmLambert-St Louis

$1,096

Delta

Apr 7

STL7:05 pmLambert-St Louis

29h 05m

1 stop

ICN2:10 pmIncheon Intl

Apr 20

ICN7:20 pmIncheon Intl

19h 16m

1 stop

STL12:36 amLambert-St Louis

$1,097

Delta

Dec 9

STL6:03 amLambert-St Louis

20h 42m

2 stops

ICN5:45 pmIncheon Intl

Dec 23

ICN8:35 pmIncheon Intl

29h 00m

1 stop

STL10:35 amLambert-St Louis

$1,106

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

St. LouisIncheon

STL Lambert-St Louis - ICN Incheon Intl

STLICN

Lambert-St Louis

Thu 4/8

12:27 pm-12:40 pm

2 stops34h 13m

Incheon Intl

Tue 4/20

8:00 am-11:59 pm

2 stops29h 59m

$1,092

St. LouisIncheon

STL Lambert-St Louis - ICN Incheon Intl

STLICN

Lambert-St Louis

Thu 3/4

10:25 am-12:45 pm

2 stops35h 20m

Incheon Intl

Sun 3/14

1:55 am-5:19 pm

2 stops29h 24m

$1,092

Quickest round-trip

St. LouisIncheon

STL Lambert-St Louis - ICN Incheon Intl

STLICN

Lambert-St Louis

Mon 2/1

6:20 am-4:50 pm

1 stop19h 30m

Incheon Intl

Mon 2/22

5:40 pm-8:49 pm

1 stop18h 09m

$1,096

St. LouisIncheon

STL Lambert-St Louis - ICN Incheon Intl

STLICN

Lambert-St Louis

Wed 4/7

7:05 pm-2:10 pm

1 stop29h 05m

Incheon Intl

Tue 4/20

7:20 pm-12:36 am

1 stop19h 16m

$1,096

St. LouisIncheon

STL Lambert-St Louis - ICN Incheon Intl

STLICN

Lambert-St Louis

Mon 2/1

6:06 am-4:25 pm

1 stop19h 19m

Incheon Intl

Mon 2/22

12:45 pm-6:17 pm

1 stop20h 32m

$1,096

St. LouisIncheon

STL Lambert-St Louis - ICN Incheon Intl

STLICN

Lambert-St Louis

Tue 12/8

6:00 am-4:25 pm

1 stop19h 25m

Incheon Intl

Mon 12/21

6:30 pm-10:59 pm

1 stop19h 29m

$1,097

St. LouisIncheon

STL Lambert-St Louis - ICN Incheon Intl

STLICN

Lambert-St Louis

Wed 12/9

5:50 am-4:45 pm

1 stop19h 55m

Incheon Intl

Wed 12/23

6:50 pm-12:16 am

1 stop20h 26m

$1,097

St. LouisIncheon

STL Lambert-St Louis - ICN Incheon Intl

STLICN

Lambert-St Louis

Mon 11/23

6:00 am-4:45 pm

1 stop19h 45m

Incheon Intl

Mon 11/30

6:50 pm-9:59 pm

1 stop18h 09m

$1,237

St. LouisIncheon

STL Lambert-St Louis - ICN Incheon Intl

STLICN

Lambert-St Louis

Tue 11/24

4:05 pm-5:10 pm

2 stops34h 05m

Incheon Intl

Sun 11/29

6:55 pm-3:26 pm

2 stops59h 31m

$1,593

St. LouisIncheon

STL Lambert-St Louis - ICN Incheon Intl

STLICN

Lambert-St Louis

Sat 12/5

4:05 pm-5:10 pm

2 stops58h 05m

Incheon Intl

Wed 12/9

6:55 pm-3:26 pm

2 stops59h 31m

$1,640

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 20 resultsSorted by cheapest first

How to get the cheapest flight ticket from St. Louis to Seoul

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

Prices

Airlines

Layovers

What is the cheapest month to fly to Seoul?

The month of April is another great option to travel to Seoul, with average flight prices from St. Louis averaging around $915.

When to book flights from St. Louis to Seoul

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

Estimated round-trip price

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

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

Best Price Found	$532
Fastest flight time	18h 47m
Direct flights	None

The best one-way flight to Seoul from St. Louis in the past 72 hours is $532. The best round-trip flight deal from St. Louis to Seoul found on momondo in the last 72 hours is $1,092.

The fastest flight from St. Louis to Seoul takes 18h 47m

There are no direct flights from St. Louis to Seoul. There are no popular flight routes from St. Louis to Seoul.

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Frequently asked questions about flying from St. Louis to Seoul

How far is Lambert-St Louis to Seoul by plane?
The distance between Lambert-St Louis and Seoul is about 6661.9 mi. 18h 47m is a normal flight duration for this route.
When did momondo last update prices for flights from Lambert-St Louis Airport to Seoul?
Prices for flights from Lambert-St Louis Airport to Seoul are updated daily.
How many operators does momondo search for flights from Lambert-St Louis Airport to Seoul?
As of November 2026, there are 5 operators available to choose from for flights from Lambert-St Louis Airport to Seoul.
How old do you have to be to fly from Lambert-St Louis Airport to Seoul?
The minimum age for a child to fly alone is five, but airlines that offer an unaccompanied minor (UNMR) service may have their own age limitations. Flight duration, scheduling, and layovers are among the considerations that may influence age limits. We recommend that you double-check with the airline you are booking with for travel from Lambert-St Louis Airport to Seoul.
What documentation or ID do you need to fly to Seoul?
The required travel and health documents for your Seoul trip may vary depending on your itinerary and personal circumstances. As a general rule, you should carry multiple documents, including a national ID card or driver's license and a passport valid for six months after your intended arrival at Seoul. We recommend that you seek guidance from your airline or a reliable third party such as IATA.
What is the most popular airline from St. Louis to Seoul?
Based on momondo bookings for flights between St. Louis and Seoul, the leading airline is Delta, making up 66% of the total bookings. Other popular airlines include Japan Airlines with 18% and American Airlines with 16%.

Best airlines flying from St. Louis to Seoul

Compare and see reviews for airlines that fly from St. Louis to Seoul with momondo

Airline	Rating	Free Cancellation	Price
Delta	PriceFrom $852	Free Cancellation	Rating 7.8 8,697 reviews	Search Delta flights
United Airlines	PriceFrom $865	Free Cancellation	Rating 7.3 10,463 reviews	Search United Airlines flights
Korean Air	PriceFrom $999	Free Cancellation	Rating 8.4 1,219 reviews	Search Korean Air flights
Air Canada	PriceFrom $1,083	Free Cancellation	Rating 7.1 11,846 reviews	Search Air Canada flights
American Airlines	PriceFrom $1,113	Free Cancellation	Rating 7.0 12,222 reviews	Search American Airlines flights

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

Finding the right flight to Seoul from St. Louis is quick and easy when you have a range of options in front of you, from reputable agents and recognisable airlines. Options that can then be filtered down to find the best fit. That is what momondo does. We make finding flights to Seoul quick and easy, saving you time and money.

Can I find flights from St. Louis to Seoul with flexible booking policies on momondo?

momondo does allow users to show only those flights to Seoul from St. Louis which offer a flexible booking policy as well as other useful filters and features.

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

momondo provides multiple filters to help you find the best flight to Seoul from St. Louis. Filter by price, airline, airports, cabin, aircraft, payment method, number of stops and more.

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

Price alerts on flights to Seoul 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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Cheap flights from St. Louis to Seoul from $532

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 Seoul departing on 11/19. 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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United Airlines flights from St. Louis to Seoul

Our best United Airlines deals on St. Louis to Seoul flight tickets

Delta flights from St. Louis to Seoul

Our best Delta deals on St. Louis to Seoul flight tickets

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How to get the cheapest flight ticket from St. Louis to Seoul

What is the cheapest month to fly to Seoul?

What is the cheapest airline that flies from Lambert-St Louis to Seoul?

What airlines fly to Seoul?

Which airport is the most popular layover for flights between St. Louis and Seoul?

Which layover airport offers the lowest fares from St. Louis to Seoul?

Which layover airport has the shortest travel time from St. Louis to Seoul?

Which layover airport has the shortest connection time from St. Louis to Seoul?

When to book flights from St. Louis to Seoul

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

Best Price Found

Fastest flight time

Direct flights

Frequently asked questions about flying from St. Louis to Seoul

Best airlines flying from St. Louis to Seoul

Compare and see reviews for airlines that fly from St. Louis to Seoul with momondo

Why use momondo?

An easier way to manage your Seoul trip

We make it super easy to schedule, organize and travel with friends or family. Trips is free — and available to use no matter where you book.

Get notified when prices go down

Daily price changes in your inbox - only with Price Alerts.

Find better results for your trip to South Korea

Fly into one of these airports located in Seoul

Airports listed have a maximum distance of 30.3 mi from Seoul

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Airlines are sorted and displayed according to clicks in the past 7 days on momondo

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List of cabin classes available on flights landing in Seoul. Availability may vary depending on flight origin and airline.

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