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 66% of people opting to fly with this airline when traveling to Seoul. Keep in mind that there are 4 different airlines that fly to Seoul on a routine basis, so you have a few additional options to choose from.

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

Air Canada, Cathay Pacific, and Japan Airlines are the most popular carriers operating from Lambert-St Louis to Seoul

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.

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 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 August 2026, there are 4 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.

$529 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

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

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

7:05 pm - 2:00 pmICN Incheon Intl-STL Lambert-St Louis

32h 55m1 stop Toronto Pearson Intl

$1,018Air Canada

Tue, Sep 22 - Tue, Sep 29

8:55 am - 11:35 amSTL Lambert-St Louis-ICN Incheon Intl

36h 40m2 stops Toronto Pearson Intl Osaka Kansai Intl

5:55 pm - 3:26 pmICN Incheon Intl-STL Lambert-St Louis

35h 31m2 stops Vancouver Intl Toronto Pearson Intl

$1,039Multiple Airlines

Tue, Oct 13 - Thu, Oct 29

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

29h 15m2 stops Toronto Pearson Intl Tokyo Haneda

8:10 pm - 3:26 pmICN Incheon Intl-STL Lambert-St Louis

34h 16m1 stop Toronto Pearson Intl

$1,044Multiple Airlines

Mon, Oct 5 - Wed, Nov 4

8:46 am - 5:20 pmSTL Lambert-St Louis-ICN Incheon Intl

18h 34m1 stop Minneapolis St Paul

7:40 pm - 11:16 pmICN Incheon Intl-STL Lambert-St Louis

17h 36m1 stop Minneapolis St Paul

$1,107Delta

Wed, Sep 16 - Fri, Sep 25

8:46 am - 5:20 pmSTL Lambert-St Louis-ICN Incheon Intl

18h 34m1 stop Minneapolis St Paul

7:40 pm - 11:16 pmICN Incheon Intl-STL Lambert-St Louis

17h 36m1 stop Minneapolis St Paul

$1,108Delta

Wed, Sep 16 - Fri, Sep 25

8:46 am - 5:20 pmSTL Lambert-St Louis-ICN Incheon Intl

18h 34m1 stop Minneapolis St Paul

8:45 am - 1:23 pmICN Incheon Intl-STL Lambert-St Louis

18h 38m1 stop Atlanta Hartsfield-Jackson

$1,371Korean Air

Thu, Sep 24 - Mon, Sep 28

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

$1,422United Airlines

Tue, Dec 8 - Tue, Dec 29

5:49 pm - 5:40 amSTL Lambert-St Louis-ICN Incheon Intl

20h 51m2 stops Denver Intl San Francisco

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

19h 29m1 stop Newark

$1,422United Airlines

Tue, Dec 8 - Tue, Dec 29

7:01 am - 5:45 amSTL Lambert-St Louis-ICN Incheon Intl

31h 44m1 stop Atlanta Hartsfield-Jackson

8:35 pm - 11:18 pmICN Incheon Intl-STL Lambert-St Louis

17h 43m1 stop Minneapolis St Paul

$2,236Korean Air

Sat, Dec 26 - Wed, Jan 6

Cheap last minute flights

Enter your travel dates to find the best prices.

2:32 pm - 3:20 pmSTL Lambert-St Louis-ICN Incheon Intl

34h 48m1 stop Salt Lake City

10:15 am - 4:38 pmICN Incheon Intl-STL Lambert-St Louis

20h 23m1 stop Detroit Metropolitan Wayne County

$1,113Delta

Sun, Aug 30 - Sun, Sep 6

5:34 pm - 5:20 pmSTL Lambert-St Louis-ICN Incheon Intl

33h 46m1 stop Minneapolis St Paul

10:15 am - 8:38 pmICN Incheon Intl-STL Lambert-St Louis

24h 23m2 stops Detroit Metropolitan Wayne County Atlanta Hartsfield-Jackson

$1,117Delta

Sun, Aug 30 - Sun, Sep 6

11:13 am - 5:20 pmSTL Lambert-St Louis-ICN Incheon Intl

16h 07m1 stop Minneapolis St Paul

10:15 am - 8:42 pmICN Incheon Intl-STL Lambert-St Louis

24h 27m1 stop Detroit Metropolitan Wayne County

$1,157Delta

Sat, Aug 29 - Sat, Sep 5

5:33 pm - 4:00 amSTL Lambert-St Louis-ICN Incheon Intl

20h 27m1 stop Atlanta Hartsfield-Jackson

10:15 am - 8:33 pmICN Incheon Intl-STL Lambert-St Louis

24h 18m2 stops Detroit Metropolitan Wayne County Atlanta Hartsfield-Jackson

$1,162Delta

Sat, Aug 29 - Sat, Sep 5

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

20h 30m2 stops Minneapolis St Paul Seattle/Tacoma Intl

10:15 am - 4:17 pmICN Incheon Intl-STL Lambert-St Louis

20h 02m2 stops Detroit Metropolitan Wayne County Atlanta Hartsfield-Jackson

$1,162Delta

Sat, Aug 29 - Sat, Sep 5

6:00 am - 12:25 amSTL Lambert-St Louis-ICN Incheon Intl

28h 25m2 stops Los Angeles Los Angeles Hong Kong Intl

8:00 am - 11:42 pmICN Incheon Intl-STL Lambert-St Louis

29h 42m2 stops Hong Kong Intl Dallas/Fort Worth

$1,212Multiple Airlines

Sun, Aug 30 - Sun, Sep 6

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

25h 15m2 stops Los Angeles Los Angeles Tokyo Haneda

12:05 pm - 10:59 pmGMP Seoul Gimpo Intl-STL Lambert-St Louis

24h 54m2 stops Tokyo Haneda Los Angeles Los Angeles

$1,400Japan Airlines

Sat, Aug 29 - Sat, Sep 5

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

25h 15m2 stops Los Angeles Los Angeles Tokyo Haneda

8:00 am - 10:59 pmGMP Seoul Gimpo Intl-STL Lambert-St Louis

28h 59m2 stops Tokyo Haneda Los Angeles Los Angeles

$1,478Japan Airlines

Sun, Aug 30 - Sun, Sep 6

5:11 pm - 2:05 pmSTL Lambert-St Louis-ICN Incheon Intl

30h 54m2 stops Dallas/Fort Worth Hong Kong Intl

12:55 pm - 5:50 pmICN Incheon Intl-STL Lambert-St Louis

42h 55m3 stops Tokyo Narita San Francisco Las Vegas Harry Reid Intl

$1,519Multiple Airlines

Sat, Aug 29 - Sat, Sep 5

1:00 pm - 9:55 amSTL Lambert-St Louis-ICN Incheon Intl

30h 55m2 stops Washington, D.C. Dulles Intl Frankfurt am Main

12:20 pm - 3:38 pmICN Incheon Intl-STL Lambert-St Louis

41h 18m3 stops Frankfurt am Main Munich Franz Josef Strauss Chicago O'Hare Intl

$5,557Lufthansa

Sun, Aug 30 - Sun, Sep 6

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Air Canada flights from St. Louis to Seoul

Our best Air Canada deals on St. Louis to Seoul flight tickets

Air Canada

Sep 22

STL12:10 pmLambert-St Louis

37h 55m

2 stops

ICN4:05 pmIncheon Intl

Sep 29

ICN5:45 pmIncheon Intl

34h 15m

2 stops

STL2:00 pmLambert-St Louis

$1,018

Air Canada

Sep 22

STL12:10 pmLambert-St Louis

37h 55m

2 stops

ICN4:05 pmIncheon Intl

Sep 29

ICN7:05 pmIncheon Intl

32h 55m

1 stop

STL2:00 pmLambert-St Louis

$1,019

Air Canada

Oct 26

STL4:05 pmLambert-St Louis

35h 20m

1 stop

ICN5:25 pmIncheon Intl

Nov 25

ICN8:10 pmIncheon Intl

34h 16m

1 stop

STL3:26 pmLambert-St Louis

$1,023

Cathay Pacific flights from St. Louis to Seoul

Our best Cathay Pacific deals on St. Louis to Seoul flight tickets

Cathay Pacific

Nov 23

STL12:58 pmLambert-St Louis

38h 37m

2 stops

ICN6:35 pmIncheon Intl

Dec 1

ICN3:00 pmIncheon Intl

40h 43m

2 stops

STL4:43 pmLambert-St Louis

$1,116

Cathay Pacific

Oct 14

STL7:10 pmLambert-St Louis

39h 15m

2 stops

ICN12:25 amIncheon Intl

Oct 27

ICN7:35 pmIncheon Intl

40h 25m

2 stops

STL10:00 pmLambert-St Louis

$1,119

Cathay Pacific

Oct 18

STL8:48 amLambert-St Louis

37h 52m

2 stops

ICN12:40 pmIncheon Intl

Oct 23

ICN1:55 amIncheon Intl

36h 24m

2 stops

STL12:19 amLambert-St Louis

$1,223

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

Tue 9/22

12:10 pm-4:05 pm

2 stops37h 55m

Incheon Intl

Tue 9/29

7:05 pm-2:00 pm

1 stop32h 55m

$1,018

St. LouisIncheon

STL Lambert-St Louis - ICN Incheon Intl

STLICN

Lambert-St Louis

Tue 10/13

8:55 am-11:35 am

2 stops36h 40m

Incheon Intl

Thu 10/29

5:55 pm-3:26 pm

2 stops35h 31m

$1,039

St. LouisIncheon

STL Lambert-St Louis - ICN Incheon Intl

STLICN

Lambert-St Louis

Mon 10/5

8:55 am-4:10 am

2 stops29h 15m

Incheon Intl

Wed 11/4

8:10 pm-3:26 pm

1 stop34h 16m

$1,044

Quickest round-trip

St. LouisIncheon

STL Lambert-St Louis - ICN Incheon Intl

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

$1,107

St. LouisIncheon

STL Lambert-St Louis - ICN Incheon Intl

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

$1,108

St. LouisIncheon

STL Lambert-St Louis - ICN Incheon Intl

STLICN

Lambert-St Louis

Thu 9/24

8:46 am-5:20 pm

1 stop18h 34m

Incheon Intl

Mon 9/28

8:45 am-1:23 pm

1 stop18h 38m

$1,371

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

Tue 12/29

6:30 pm-10:59 pm

1 stop19h 29m

$1,422

St. LouisIncheon

STL Lambert-St Louis - ICN Incheon Intl

STLICN

Lambert-St Louis

Tue 12/8

5:49 pm-5:40 am

2 stops20h 51m

Incheon Intl

Tue 12/29

6:30 pm-10:59 pm

1 stop19h 29m

$1,422

St. LouisIncheon

STL Lambert-St Louis - ICN Incheon Intl

STLICN

Lambert-St Louis

Sat 12/26

7:01 am-5:45 am

1 stop31h 44m

Incheon Intl

Wed 1/6

8:35 pm-11:18 pm

1 stop17h 43m

$2,236

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 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 $1,398.
The lowest price recently found on this route was $1,018.

What is the cheapest month to fly to Seoul?

The month of December is another great option to travel to Seoul, with average flight prices from St. Louis averaging around $897.

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	$529
Fastest flight time	16h 07m
Direct flights	None

The best one-way flight to Seoul from St. Louis in the past 72 hours is $529. 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 16h 07m

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. 16h 07m 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 August 2026, there are 4 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 100% of the total bookings.

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 $846	Free Cancellation	Rating 7.8 8,531 reviews	Search Delta flights
United Airlines	PriceFrom $865	Free Cancellation	Rating 7.4 10,124 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 11,539 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 $529

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 11/15. 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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Air Canada flights from St. Louis to Seoul

Our best Air Canada deals on St. Louis to Seoul flight tickets

Cathay Pacific flights from St. Louis to Seoul

Our best Cathay Pacific deals on St. Louis to Seoul flight tickets

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See travel insights to Seoul from

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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