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.

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.

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.

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.

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

Air Canada and Delta are the most popular carriers operating from Lambert-St Louis to Seoul

What airlines fly to Seoul?

Delta, United Airlines and American Airlines 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 64% 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.

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 September 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.

$577 Cheap Flights from St. Louis to Seoul in 2026

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.

12:10 pm - 4:05 pmSTL Lambert-St Louis-ICN Incheon Intl

37h 55m2 stops Montreal Pierre Elliott Trudeau Intl Vancouver Intl

5:45 pm - 2:00 pmICN Incheon Intl-STL Lambert-St Louis

34h 15m2 stops Vancouver Intl Toronto Pearson Intl

$1,018Air Canada

Tue, Sep 22 - Tue, Sep 29

4:05 pm - 5:25 pmSTL Lambert-St Louis-ICN Incheon Intl

35h 20m1 stop Toronto Pearson Intl

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

35h 31m2 stops Vancouver Intl Toronto Pearson Intl

$1,023Air Canada

Mon, Oct 26 - Wed, Nov 25

7:00 am - 3:45 pmSTL Lambert-St Louis-ICN Incheon Intl

18h 45m1 stop Dallas/Fort Worth

5:50 pm - 11:43 pmICN Incheon Intl-STL Lambert-St Louis

19h 53m1 stop Dallas/Fort Worth

$1,079American Airlines

Tue, Sep 22 - Tue, Sep 29

8:55 am - 4:10 amSTL Lambert-St Louis-ICN Incheon Intl

29h 15m2 stops Toronto Pearson Intl Tokyo Haneda

5:55 pm - 3:23 pmICN Incheon Intl-STL Lambert-St Louis

35h 28m2 stops Vancouver Intl Toronto Pearson Intl

$1,081Multiple Airlines

Tue, Oct 6 - Wed, Oct 28

8:55 am - 4:10 amSTL Lambert-St Louis-ICN Incheon Intl

29h 15m2 stops Toronto Pearson Intl Tokyo Haneda

5:55 pm - 3:23 pmICN Incheon Intl-STL Lambert-St Louis

35h 28m2 stops Vancouver Intl Toronto Pearson Intl

$1,081Multiple Airlines

Tue, Oct 6 - Tue, Oct 27

7:00 am - 3:45 pmSTL Lambert-St Louis-ICN Incheon Intl

18h 45m1 stop Dallas/Fort Worth

5:50 pm - 12:27 amICN Incheon Intl-STL Lambert-St Louis

20h 37m2 stops Dallas/Fort Worth Chicago O'Hare Intl

$1,083American Airlines

Tue, Sep 22 - Tue, Sep 29

6:15 am - 5:20 pmSTL Lambert-St Louis-ICN Incheon Intl

21h 05m1 stop Minneapolis St Paul

6:50 pm - 11:54 pmICN Incheon Intl-STL Lambert-St Louis

19h 04m1 stop Atlanta Hartsfield-Jackson

$1,152Delta

Wed, Sep 30 - Wed, Oct 7

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

20h 25m2 stops Atlanta Hartsfield-Jackson Detroit Metropolitan Wayne County

4:25 pm - 9:23 pmICN Incheon Intl-STL Lambert-St Louis

18h 58m1 stop Atlanta Hartsfield-Jackson

$1,156Delta

Wed, Sep 30 - Wed, Oct 7

7:08 am - 3:00 pmSTL Lambert-St Louis-ICN Incheon Intl

17h 52m1 stop San Francisco

11:45 am - 10:15 pmICN Incheon Intl-STL Lambert-St Louis

24h 30m1 stop San Francisco

$1,196United Airlines

Wed, Oct 7 - Thu, Oct 29

7:08 am - 3:00 pmSTL Lambert-St Louis-ICN Incheon Intl

17h 52m1 stop San Francisco

5:30 pm - 9:52 pmICN Incheon Intl-STL Lambert-St Louis

18h 22m1 stop Newark

$1,196United Airlines

Mon, Oct 5 - Tue, Oct 27

Cheap last minute flights

Enter your travel dates to find the best prices.

8:36 am - 3:45 pmSTL Lambert-St Louis-ICN Incheon Intl

17h 09m1 stop Dallas/Fort Worth

5:50 pm - 11:43 pmICN Incheon Intl-STL Lambert-St Louis

19h 53m1 stop Dallas/Fort Worth

$1,079American Airlines

Mon, Sep 7 - Mon, Sep 14

5:43 am - 3:45 pmSTL Lambert-St Louis-ICN Incheon Intl

20h 02m1 stop Dallas/Fort Worth

5:50 pm - 11:43 pmICN Incheon Intl-STL Lambert-St Louis

19h 53m1 stop Dallas/Fort Worth

$1,079American Airlines

Thu, Sep 10 - Mon, Sep 21

5:43 am - 3:45 pmSTL Lambert-St Louis-ICN Incheon Intl

20h 02m1 stop Dallas/Fort Worth

5:50 pm - 12:27 amICN Incheon Intl-STL Lambert-St Louis

20h 37m2 stops Dallas/Fort Worth Chicago O'Hare Intl

$1,083American Airlines

Thu, Sep 10 - Mon, Sep 21

8:36 am - 3:45 pmSTL Lambert-St Louis-ICN Incheon Intl

17h 09m1 stop Dallas/Fort Worth

5:50 pm - 12:27 amICN Incheon Intl-STL Lambert-St Louis

20h 37m2 stops Dallas/Fort Worth Chicago O'Hare Intl

$1,083American Airlines

Mon, Sep 7 - Mon, Sep 14

5:00 am - 3:45 pmSTL Lambert-St Louis-ICN Incheon Intl

20h 45m2 stops Chicago O'Hare Intl Dallas/Fort Worth

5:50 pm - 12:27 amICN Incheon Intl-STL Lambert-St Louis

20h 37m2 stops Dallas/Fort Worth Chicago O'Hare Intl

$1,083American Airlines

Thu, Sep 10 - Mon, Sep 21

6:35 am - 10:25 pmSTL Lambert-St Louis-ICN Incheon Intl

25h 50m2 stops Seattle/Tacoma Intl Hong Kong Intl

8:00 am - 11:43 pmICN Incheon Intl-STL Lambert-St Louis

29h 43m2 stops Hong Kong Intl Dallas/Fort Worth

$1,091Multiple Airlines

Mon, Sep 7 - Mon, Sep 14

6:00 am - 9:15 pmSTL Lambert-St Louis-GMP Seoul Gimpo Intl

25h 15m2 stops Chicago O'Hare Intl Tokyo Haneda

8:00 am - 11:30 pmGMP Seoul Gimpo Intl-STL Lambert-St Louis

29h 30m2 stops Tokyo Haneda Los Angeles

$1,334Japan Airlines

Mon, Sep 7 - Mon, Sep 14

6:00 am - 9:15 pmSTL Lambert-St Louis-GMP Seoul Gimpo Intl

25h 15m2 stops Los Angeles Tokyo Haneda

8:00 am - 10:18 amGMP Seoul Gimpo Intl-STL Lambert-St Louis

40h 18m2 stops Tokyo Haneda Chicago O'Hare Intl

$1,341Japan Airlines

Thu, Sep 10 - Thu, Sep 17

7:36 pm - 11:00 amSTL Lambert-St Louis-ICN Incheon Intl

25h 24m2 stops Seattle/Tacoma Intl Taipei City Taiwan Taoyuan Intl

7:45 pm - 3:38 pmICN Incheon Intl-STL Lambert-St Louis

33h 53m3 stops Taipei City Taiwan Taoyuan Intl San Francisco Chicago O'Hare Intl

$1,488Multiple Airlines

Thu, Sep 10 - Mon, Sep 21

6:30 am - 9:15 pmSTL Lambert-St Louis-GMP Seoul Gimpo Intl

24h 45m2 stops Los Angeles Tokyo Haneda

7:15 pm - 11:30 pmGMP Seoul Gimpo Intl-STL Lambert-St Louis

42h 15m2 stops Tokyo Haneda Los Angeles

$1,589Japan Airlines

Wed, Sep 9 - Fri, Sep 11

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American Airlines flights from St. Louis to Seoul

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

American Airlines

Sep 13

STL5:45 pmLambert-St Louis

32h 00m

2 stops

ICN3:45 pmIncheon Intl

Sep 28

ICN5:50 pmIncheon Intl

19h 53m

1 stop

STL11:43 pmLambert-St Louis

$1,068

American Airlines

Sep 22

STL7:00 amLambert-St Louis

18h 45m

1 stop

ICN3:45 pmIncheon Intl

Sep 29

ICN5:50 pmIncheon Intl

19h 53m

1 stop

STL11:43 pmLambert-St Louis

$1,079

American Airlines

Sep 22

STL5:00 amLambert-St Louis

20h 45m

2 stops

ICN3:45 pmIncheon Intl

Sep 29

ICN5:50 pmIncheon Intl

29h 39m

2 stops

STL9:29 amLambert-St Louis

$1,083

Alaska Airlines flights from St. Louis to Seoul

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

Alaska Airlines

Sep 24

STL6:29 amLambert-St Louis

21h 01m

1 stop

ICN5:30 pmIncheon Intl

Sep 28

ICN7:35 pmIncheon Intl

18h 24m

1 stop

STL11:59 pmLambert-St Louis

$1,108

Alaska Airlines

Oct 9

STL4:42 pmLambert-St Louis

34h 48m

1 stop

ICN5:30 pmIncheon Intl

Oct 22

ICN7:35 pmIncheon Intl

18h 24m

1 stop

STL11:59 pmLambert-St Louis

$1,256

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

St. LouisIncheon

STL Lambert-St Louis - ICN Incheon Intl

STLICN

Lambert-St Louis

Tue 9/22

12:10 pm-4:05 pm

2 stops37h 55m

Incheon Intl

Tue 9/29

5:45 pm-2:00 pm

2 stops34h 15m

$1,018

St. LouisIncheon

STL Lambert-St Louis - ICN Incheon Intl

STLICN

Lambert-St Louis

Mon 10/26

4:05 pm-5:25 pm

1 stop35h 20m

Incheon Intl

Wed 11/25

6:55 pm-3:26 pm

2 stops35h 31m

$1,023

St. LouisIncheon

STL Lambert-St Louis - ICN Incheon Intl

STLICN

Lambert-St Louis

Tue 9/22

7:00 am-3:45 pm

1 stop18h 45m

Incheon Intl

Tue 9/29

5:50 pm-11:43 pm

1 stop19h 53m

$1,079

St. LouisIncheon

STL Lambert-St Louis - ICN Incheon Intl

STLICN

Lambert-St Louis

Tue 10/6

8:55 am-4:10 am

2 stops29h 15m

Incheon Intl

Wed 10/28

5:55 pm-3:23 pm

2 stops35h 28m

$1,081

St. LouisIncheon

STL Lambert-St Louis - ICN Incheon Intl

STLICN

Lambert-St Louis

Tue 10/6

8:55 am-4:10 am

2 stops29h 15m

Incheon Intl

Tue 10/27

5:55 pm-3:23 pm

2 stops35h 28m

$1,081

St. LouisIncheon

STL Lambert-St Louis - ICN Incheon Intl

STLICN

Lambert-St Louis

Tue 9/22

7:00 am-3:45 pm

1 stop18h 45m

Incheon Intl

Tue 9/29

5:50 pm-12:27 am

2 stops20h 37m

$1,083

St. LouisIncheon

STL Lambert-St Louis - ICN Incheon Intl

STLICN

Lambert-St Louis

Wed 9/30

6:15 am-5:20 pm

1 stop21h 05m

Incheon Intl

Wed 10/7

6:50 pm-11:54 pm

1 stop19h 04m

$1,152

St. LouisIncheon

STL Lambert-St Louis - ICN Incheon Intl

STLICN

Lambert-St Louis

Wed 9/30

6:00 am-4:25 pm

2 stops20h 25m

Incheon Intl

Wed 10/7

4:25 pm-9:23 pm

1 stop18h 58m

$1,156

St. LouisIncheon

STL Lambert-St Louis - ICN Incheon Intl

STLICN

Lambert-St Louis

Wed 10/7

7:08 am-3:00 pm

1 stop17h 52m

Incheon Intl

Thu 10/29

11:45 am-10:15 pm

1 stop24h 30m

$1,196

Quickest round-trip

St. LouisIncheon

STL Lambert-St Louis - ICN Incheon Intl

STLICN

Lambert-St Louis

Mon 10/5

7:08 am-3:00 pm

1 stop17h 52m

Incheon Intl

Tue 10/27

5:30 pm-9:52 pm

1 stop18h 22m

$1,196

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 19 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 typical price of a round-trip flight between St. Louis and Seoul?

Prices are currently typical for flights on this route.

Typical prices usually range from $916 to $1,306.
The lowest price recently found on this route was $1,018.

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 $908.

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	$577
Fastest flight time	19h 44m
Direct flights	None

The best one-way flight to Seoul from St. Louis in the past 72 hours is $577. The best round-trip flight deal from St. Louis to Seoul found on momondo in the last 72 hours is $1,018.

The fastest flight from St. Louis to Seoul takes 19h 44m

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

Search flight deals

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. 19h 44m 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 September 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 81% of the total bookings. Other popular airlines include Japan Airlines with 19%.

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
American Airlines	PriceFrom $832	Free Cancellation	Rating 7.1 12,041 reviews	Search American Airlines flights
Delta	PriceFrom $846	Free Cancellation	Rating 7.8 8,557 reviews	Search Delta flights
United Airlines	PriceFrom $865	Free Cancellation	Rating 7.4 10,173 reviews	Search United Airlines flights
Korean Air	PriceFrom $999	Free Cancellation	Rating 8.4 1,221 reviews	Search Korean Air flights
Air Canada	PriceFrom $1,083	Free Cancellation	Rating 7.1 11,592 reviews	Search Air Canada flights

Why use momondo?

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 $577

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 9/11. 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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American Airlines flights from St. Louis to Seoul

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

Alaska Airlines flights from St. Louis to Seoul

Our best Alaska Airlines 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 typical price of a round-trip flight between St. Louis and 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

Fly your favorite airline to Seoul

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

Cabin classes currently available on flights to Seoul

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

Popular cities in South Korea

Popular flights according to clicks in the last 7 days on momondo

Fly to other destinations from St. Louis

According to popular flight searches on momondo this year

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