What are the cheapest airlines flying from Seoul to St. Louis round-trip?

Currently priced at $696, United Airlines will fly you from Seoul to St. Louis and back. In addition to United Airlines, many other airlines offer competitively priced options for your trip. Search Cheapflights for deals from Delta and Air Canada - these airlines can fly you to your destination from $825 and $949, respectively.

What are the cheapest airlines to fly from Seoul to St. Louis one-way?

The cheapest airlines for a one-way flight from Seoul to St. Louis are Air Canada ($836), WestJet ($913), and Japan Airlines ($989).

What is the cheapest month to book a flight from Seoul to St. Louis?

Currently, August is the cheapest month in which you can book a flight from Seoul to St. Louis (average of $311). Flying from Seoul to St. Louis in March is currently the most expensive (average of $356). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

What is the cheapest day to fly from Seoul to St. Louis?

Travelers seeking maximum savings on their Seoul to St. Louis flight should consider departing on Wednesday mornings when fares are most often at their lowest. Monday mornings flights should be avoided if possible as fares are typically the most expensive at this time.

In terms of precipitation, rainfall in St. Louis ranges from 2.2 - 4.7 inches per month. May is typically the wettest month, when rainfall can reach 4.7 in. February is typically the driest time to visit St. Louis when rainfall is around 2.2 in.

If weather is an important factor for your trip to St. Louis, use this chart to help with planning. For those seeking warmer temperatures, July is the ideal time of year to visit, when temperatures reach an average of 80.6 F. Travelers looking to avoid the cold should look outside of January, when temperatures are typically at their lowest (around 32.0 F).

What is the cheapest day to fly round-trip from Seoul to St. Louis?

It’s generally more expensive to depart on a Tuesday, if you have to leave on this day you can still search on Cheapflights to find great options that meet your needs.

What is the cheapest time of day to fly from SEL to STL?

It’s typically best to fly out from Seoul to St. Louis at noon. Doing so could potentially save you 36% on the flight price compared to flying in the morning, which is usually more expensive.

What airport do you fly into for flights to St. Louis from Seoul?

If you book a flight to St. Louis from Seoul, you will be flying to Lambert-St Louis, which is the city’s only airport. Lambert-St Louis (STL) is located 12.7 mi from the center of St. Louis. There are 0 flights from Seoul to Lambert-St Louis per day from 1 airline.

Can I find deals for flights from Seoul to St. Louis that include hotel bookings?

Yes. In addition to deals on Seoul to St. Louis flights, Cheapflights offers vacation packages that include both flights and hotel.

How can I find direct flights from Seoul to St. Louis?

After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Seoul to St. Louis.

Can I find deals for business class flights from Seoul to St. Louis?

Yes. Cheapflights offers flight deals from Seoul to St. Louis by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.

$629+ Flights from Seoul to St. Louis

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Cheap flight deals from Seoul to St. Louis

Round-trip from	$696 (United Airlines)
One-way from	$629 (Kiwi.com)

From Seoul (SEL) to Lambert-St Louis

Search Deals

One-way flight from Seoul (SEL) to Lambert-St Louis

Search Deals

Find flight deals from Seoul to St. Louis

Cheapest flights from Seoul to St. Louis
Explore the most affordable flight options available from Seoul to St. Louis. Find the lowest fares from popular airlines and budget airlines, with prices last updated on July 9, 2025.

Mon 10/204:50 pmICN - STL

2 stops31h 02mUnited Airlines

Wed 11/54:43 pmSTL - ICN

2 stops21h 57mUnited Airlines

Deal found 7/7

$696

Mon 9/156:40 pmICN - STL

1 stop18h 29mMultiple Airlines

Tue 10/148:50 amSTL - ICN

1 stop18h 30mMultiple Airlines

Deal found 7/8

$747

Tue 8/196:40 pmICN - STL

1 stop29h 57mDelta

Sun 11/166:59 pmSTL - ICN

2 stops30h 31mDelta

Deal found 7/9

$825

Tue 12/166:55 pmICN - STL

2 stops59h 34mAir Canada

Thu 12/254:05 pmSTL - ICN

2 stops58h 05mAir Canada

Deal found 7/6

$949

Sat 11/158:35 pmICN - STL

1 stop33h 30mHawaiian Airlines

Sat 11/227:00 amSTL - ICN

1 stop20h 35mHawaiian Airlines

Deal found 7/8

$973

Thu 7/106:40 pmICN - STL

1 stop18h 40mKorean Air

Thu 8/76:40 amSTL - ICN

1 stop19h 45mKorean Air

Deal found 7/7

$1,005

Tue 12/167:50 pmGMP - STL

2 stops36h 24mANA

Thu 12/2511:45 amSTL - GMP

2 stops32h 35mANA

Deal found 7/6

$1,223

Mon 9/157:55 amGMP - STL

2 stops19h 28mJapan Airlines

Tue 10/148:49 amSTL - GMP

2 stops35h 56mJapan Airlines

Deal found 7/9

$1,232

Sat 8/27:40 amGMP - STL

2 stops24h 27mMultiple Airlines

Tue 8/56:14 amSTL - GMP

2 stops25h 36mMultiple Airlines

Deal found 7/9

$3,037

Best flights from Seoul to St. Louis
Discover carefully curated flight deals from Seoul to St. Louis that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated July 9, 2025.

Mon 10/2011:30 amICN - STL

1 stop19h 15mUnited Airlines

Wed 11/54:43 pmSTL - ICN

2 stops21h 57mUnited Airlines

Deal found 7/7

$696

Mon 9/156:40 pmICN - STL

1 stop18h 29mMultiple Airlines

Tue 10/148:50 amSTL - ICN

1 stop18h 30mMultiple Airlines

Deal found 7/8

$747

Tue 8/196:40 pmICN - STL

1 stop27h 56mDelta

Sun 11/166:59 pmSTL - ICN

2 stops30h 31mDelta

Deal found 7/8

$825

Tue 12/166:55 pmICN - STL

2 stops59h 34mAir Canada

Thu 12/254:05 pmSTL - ICN

2 stops58h 05mAir Canada

Deal found 7/6

$949

Sat 11/158:35 pmICN - STL

1 stop33h 30mHawaiian Airlines

Sat 11/227:00 amSTL - ICN

1 stop20h 35mHawaiian Airlines

Deal found 7/8

$973

Tue 12/167:50 pmGMP - STL

2 stops36h 24mANA

Thu 12/2511:45 amSTL - GMP

2 stops32h 35mANA

Deal found 7/6

$1,223

Mon 9/157:55 amGMP - STL

2 stops19h 28mJapan Airlines

Tue 10/148:49 amSTL - GMP

2 stops35h 56mJapan Airlines

Deal found 7/9

$1,232

Sat 8/27:40 amGMP - STL

2 stops24h 27mMultiple Airlines

Tue 8/56:14 amSTL - GMP

2 stops25h 36mMultiple Airlines

Deal found 7/9

$3,037

Last-minute flights from Seoul to St. Louis
Discover last-minute flight deals from Seoul to St. Louis. Data last updated July 9, 2025 and is based on user searches.

Thu 7/106:40 pmICN - STL

1 stop18h 40mKorean Air

Thu 8/76:40 amSTL - ICN

1 stop19h 45mKorean Air

Deal found 7/7

$1,005

Mon 7/147:20 pmGMP - STL

2 stops31h 23mJapan Airlines

Wed 7/166:14 amSTL - GMP

2 stops25h 36mJapan Airlines

Deal found 7/9

$1,551

Wed 7/161:20 amICN - STL

2 stops36h 37mQatar Airways

Thu 9/259:56 amSTL - ICN

2 stops41h 09mQatar Airways

Deal found 7/7

$1,956

Thu 7/1711:30 amICN - STL

1 stop19h 15mUnited Airlines

Thu 9/2511:06 amSTL - ICN

2 stops27h 14mUnited Airlines

Deal found 7/7

$838

Thu 7/177:05 pmICN - STL

2 stops33h 32mAir Canada

Thu 9/259:15 amSTL - ICN

2 stops40h 50mAir Canada

Deal found 7/7

$1,062

Thu 7/177:55 pmGMP - STL

2 stops30h 32mANA

Thu 9/258:25 amSTL - GMP

2 stops23h 55mANA

Deal found 7/7

$1,428

Sat 7/196:40 pmICN - STL

1 stop18h 40mKorean Air

Sun 8/1011:18 amSTL - ICN

1 stop16h 02mKorean Air

Deal found 7/7

$1,357

Sat 7/194:40 pmICN - STL

1 stop21h 19mMultiple Airlines

Fri 8/111:18 amSTL - ICN

1 stop16h 02mMultiple Airlines

Deal found 7/8

$1,665

Wed 7/237:55 amGMP - STL

2 stops18h 48mJapan Airlines

Thu 9/258:50 amSTL - GMP

2 stops23h 00mJapan Airlines

Deal found 7/7

$1,491

Thu 7/316:20 pmICN - STL

1 stop19h 39mMultiple Airlines

Tue 8/126:41 amSTL - ICN

1 stop21h 14mMultiple Airlines

Deal found 7/8

$1,253

Sat 8/25:45 pmICN - STL

2 stops40h 15mAir Canada

Thu 8/71:30 pmSTL - ICN

2 stops36h 35mAir Canada

Deal found 7/9

$1,052

Sat 8/27:40 amGMP - STL

2 stops24h 27mMultiple Airlines

Tue 8/56:14 amSTL - GMP

2 stops25h 36mMultiple Airlines

Deal found 7/9

$3,037

One-way flights from Seoul to St. Louis
Search for one-way flight options from Seoul to St. Louis. Find affordable one-way fares based on user searches. Data last updated July 9, 2025.

Thu 7/247:15 amICN - STL

3 stops40h 37mMultiple Airlines

Deal found 7/9

$629

Tue 7/227:05 pmICN - STL

2 stops38h 55mAir Canada

Deal found 7/8

$836

Tue 8/56:45 pmICN - STL

2 stops52h 56mWestJet

Deal found 7/7

$913

Tue 8/57:55 amGMP - STL

2 stops29h 35mJapan Airlines

Deal found 7/7

$989

Tue 8/56:40 pmICN - STL

1 stop18h 40mKorean Air

Deal found 7/7

$1,092

Tue 8/51:20 amICN - STL

2 stops53h 50mQatar Airways

Deal found 7/9

$1,556

Mon 9/19:25 pmICN - STL

2 stops31h 16mAlaska Airlines

Deal found 7/9

$2,207

Sat 10/47:55 pmGMP - STL

2 stops36h 22mANA

Deal found 7/8

$3,605

Cheapflights Fare Finder

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 10/20

4:50 pm-9:52 am

2 stops31h 02m

Lambert-St Louis

Wed 11/5

4:43 pm-5:40 am

2 stops21h 57m

$696

IncheonSt. Louis

ICN - STL

ICNSTL

Incheon Intl

Mon 9/15

6:40 pm-11:09 pm

1 stop18h 29m

Lambert-St Louis

Tue 10/14

8:50 am-5:20 pm

1 stop18h 30m

$747

IncheonSt. Louis

ICN - STL

ICNSTL

Incheon Intl

Tue 8/19

6:40 pm-8:36 am

1 stop27h 56m

Lambert-St Louis

Sun 11/16

6:59 pm-4:30 pm

2 stops30h 31m

$825

IncheonSt. Louis

ICN - STL

ICNSTL

Incheon Intl

Tue 12/16

6:55 pm-3:29 pm

2 stops59h 34m

Lambert-St Louis

Thu 12/25

4:05 pm-5:10 pm

2 stops58h 05m

$949

IncheonSt. Louis

ICN - STL

ICNSTL

Incheon Intl

Sat 11/15

8:35 pm-3:05 pm

1 stop33h 30m

Lambert-St Louis

Sat 11/22

7:00 am-6:35 pm

1 stop20h 35m

$973

SeoulSt. Louis

GMP - STL

GMPSTL

Seoul Gimpo Intl

Tue 12/16

7:50 pm-5:14 pm

2 stops36h 24m

Lambert-St Louis

Thu 12/25

11:45 am-11:20 am

2 stops32h 35m

$1,223

SeoulSt. Louis

GMP - STL

GMPSTL

Seoul Gimpo Intl

Mon 9/15

7:55 am-1:23 pm

2 stops19h 28m

Lambert-St Louis

Tue 10/14

8:49 am-10:45 am

2 stops35h 56m

$1,232

SeoulSt. Louis

GMP - STL

GMPSTL

Seoul Gimpo Intl

Sat 8/2

7:40 am-6:07 pm

2 stops24h 27m

Lambert-St Louis

Tue 8/5

6:14 am-9:50 pm

2 stops25h 36m

$3,037

IncheonSt. Louis

ICN - STL

ICNSTL

Incheon Intl

Thu 7/24

7:15 am-9:52 am

3 stops40h 37m

$629

IncheonSt. Louis

ICN - STL

ICNSTL

Incheon Intl

Tue 7/22

7:05 pm-8:00 pm

2 stops38h 55m

$836

Flights are sorted by cheapest round-trip flights first.

Deals found on 7/9

Showing 1-10 of 16 results

Best time to book a flight from Seoul to St. Louis

Have a flexible travel schedule? Discover the best time to fly to St. Louis from Seoul with our price prediction graph.

Estimated round-trip price

Rates are based on past data. Find the cheapest month and day to book your flight based on your travel requirements, then search for cheap deals.

Cheapflights Insights

Everything you need to know about your flight from Seoul to St. Louis

No data available for this route at this time. Please check back soon.

Reviews of airlines servicing St. Louis

Read through reviews of airlines operating flights from Seoul to St. Louis, such as ANA, Korean Air, and Japan Airlines. Reviews also offer insight into each airline's entertainment options, comfort, food, crew/service, and boarding process.

ANA

8.4

Very good

898 reviews

Reviews

1 / 20

10.0

Excellent

Kenneth,Jul 2025

SFO - HND

Great food, great service, great comfort. Can’t ask for more although I’m only flying economy!

ANA

8.4

Very good

898 reviews

ANA

8.4

Very good

898 reviews

Reviews

1 / 20

10.0

Excellent

Kenneth,Jul 2025

SFO - HND

Great food, great service, great comfort. Can’t ask for more although I’m only flying economy!

Korean Air

8.4

Very good

1,105 reviews

ANA

8.4

Very good

898 reviews

Reviews

1 / 20

10.0

Excellent

Kenneth,Jul 2025

SFO - HND

Great food, great service, great comfort. Can’t ask for more although I’m only flying economy!

Japan Airlines

8.3

Very good

1,507 reviews

ANA

8.4

Very good

898 reviews

Reviews

1 / 20

10.0

Excellent

Kenneth,Jul 2025

SFO - HND

Great food, great service, great comfort. Can’t ask for more although I’m only flying economy!

Alaska Airlines

8.0

Very good

10,000 reviews

ANA

8.4

Very good

898 reviews

Reviews

1 / 20

10.0

Excellent

Kenneth,Jul 2025

SFO - HND

Great food, great service, great comfort. Can’t ask for more although I’m only flying economy!

Delta

8.0

Very good

7,954 reviews

ANA

8.4

Very good

898 reviews

Reviews

1 / 20

10.0

Excellent

Kenneth,Jul 2025

SFO - HND

Great food, great service, great comfort. Can’t ask for more although I’m only flying economy!

Related info for your journey

What airport do you fly into for flights to St. Louis from Seoul?
If you book a flight to St. Louis from Seoul, you will be flying to Lambert-St Louis, which is the city’s only airport. Lambert-St Louis (STL) is located 12.7 mi from the center of St. Louis. There are 0 flights from Seoul to Lambert-St Louis per day from 1 airline.
What are the cheapest airlines flying from Seoul to St. Louis round-trip?
Currently priced at $696, United Airlines will fly you from Seoul to St. Louis and back. In addition to United Airlines, many other airlines offer competitively priced options for your trip. Search Cheapflights for deals from Delta and Air Canada - these airlines can fly you to your destination from $825 and $949, respectively.
What are the cheapest airlines to fly from Seoul to St. Louis one-way?
The cheapest airlines for a one-way flight from Seoul to St. Louis are Air Canada ($836), WestJet ($913), and Japan Airlines ($989).
Can I find deals for flights from Seoul to St. Louis that include hotel bookings?
Yes. In addition to deals on Seoul to St. Louis flights, Cheapflights offers vacation packages that include both flights and hotel.
How can I find direct flights from Seoul to St. Louis?
After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Seoul to St. Louis.
Can I find deals for business class flights from Seoul to St. Louis?
Yes. Cheapflights offers flight deals from Seoul to St. Louis by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.
What is the cheapest month to book a flight from Seoul to St. Louis?
Currently, August is the cheapest month in which you can book a flight from Seoul to St. Louis (average of $311). Flying from Seoul to St. Louis in March is currently the most expensive (average of $356). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

See more FAQs

O'Fallon

Maryland Heights

Fairview Heights

Collinsville

Eureka

St. Peters

Glencoe

Alton

Festus

Chesterfield

Farmington

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Top airline flying from Seoul to St. Louis

Airline	Cheapest	Average	Flexibility	On-time
Delta	Cheapest$687	Average$1,085	FlexibilityNo cancel fee	On-timeN/A

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$629+ Cheap flights from Seoul (SEL) to St. Louis (STL)

This is the cheapest one-way flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 7/24. Fares are subject to change and may not be available on all flights or dates of travel.

Find cheap flights from Seoul to St. Louis with Cheapflights

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Cheap flight deals from Seoul to St. Louis

Round-trip from

One-way from

Find flight deals from Seoul to St. Louis

Cheapest flights from Seoul to St. LouisExplore the most affordable flight options available from Seoul to St. Louis. Find the lowest fares from popular airlines and budget airlines, with prices last updated on July 9, 2025.

Explore the most affordable flight options available from Seoul to St. Louis. Find the lowest fares from popular airlines and budget airlines, with prices last updated on July 9, 2025.

Cheapflights Fare Finder

Use the filters below to find and compare flights from Seoul to St. Louis that are best for you.

Best time to book a flight from Seoul to St. Louis

Have a flexible travel schedule? Discover the best time to fly to St. Louis from Seoul with our price prediction graph.

Cheapflights Insights

Everything you need to know about your flight from Seoul to St. Louis

Reviews of airlines servicing St. Louis

Read through reviews of airlines operating flights from Seoul to St. Louis, such as ANA, Korean Air, and Japan Airlines. Reviews also offer insight into each airline's entertainment options, comfort, food, crew/service, and boarding process.

Related info for your journey

Find useful and relevant information for your journey from Seoul to St. Louis. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.

What airport do you fly into for flights to St. Louis from Seoul?

What are the cheapest airlines flying from Seoul to St. Louis round-trip?

What are the cheapest airlines to fly from Seoul to St. Louis one-way?

Can I find deals for flights from Seoul to St. Louis that include hotel bookings?

How can I find direct flights from Seoul to St. Louis?

Can I find deals for business class flights from Seoul to St. Louis?

What is the cheapest month to book a flight from Seoul to St. Louis?

Traveling to a place near Seoul?

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Alternative routes for Seoul to St. Louis

See prices for flight routes from nearby airports that may be better suited for you.

Top airline flying from Seoul to St. Louis

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Travel Smart

Cheapest flights from Seoul to St. Louis
Explore the most affordable flight options available from Seoul to St. Louis. Find the lowest fares from popular airlines and budget airlines, with prices last updated on July 9, 2025.