How long is the flight from Seoul to St. Louis?

Delta and ANA can get you from Seoul to St. Louis in just under 18h 53m. Your travel time can differ by up to 12h 38m. The distance between Seoul and St. Louis is about 6670 mi. This flight may include one or multiple stops.

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

Currently priced at $687, Delta will fly you from Seoul to St. Louis and back. In addition to Delta, many other airlines offer competitively priced options for your trip.

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 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.

$552+ Flights from Seoul to St. Louis

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Cheap flight deals from Seoul to St. Louis

Round-trip from	$635 (Delta)
One-way from	$552 (Air Canada)

From Seoul (SEL) to Lambert-St Louis

Search Deals

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

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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 September 16, 2025.

Thu 11/208:05 pmICN - STL

2 stops19h 41mDelta

Mon 11/245:34 pmSTL - ICN

2 stops31h 56mDelta

Deal found 9/14

$635

Mon 9/156:40 pmICN - STL

1 stop18h 29mKorean Air

Tue 10/147:05 amSTL - ICN

1 stop41h 05mKorean Air

Deal found 9/13

$870

Sat 10/118:35 pmICN - STL

1 stop17h 28mHawaiian Airlines

Thu 12/255:26 pmSTL - ICN

1 stop34h 09mHawaiian Airlines

Deal found 9/16

$905

Sat 10/1112:45 pmICN - STL

2 stops23h 13mMultiple Airlines

Thu 12/257:00 amSTL - ICN

1 stop31h 20mMultiple Airlines

Deal found 9/16

$927

Mon 9/154:50 pmICN - STL

2 stops19h 18mUnited Airlines

Tue 10/144:50 pmSTL - ICN

2 stops32h 10mUnited Airlines

Deal found 9/14

$1,018

Mon 9/157:20 pmICN - STL

2 stops27h 17mDelta

Tue 10/147:30 pmSTL - ICN

1 stop29h 50mDelta

Deal found 9/14

$1,021

Sat 10/1111:30 amICN - STL

2 stops37h 18mUnited Airlines

Thu 12/256:00 amSTL - ICN

2 stops32h 40mUnited Airlines

Deal found 9/16

$1,106

Thu 11/206:55 pmICN - STL

2 stops35h 34mMultiple Airlines

Mon 11/245:24 pmSTL - ICN

3 stops32h 46mMultiple Airlines

Deal found 9/14

$1,156

Thu 11/2012:25 pmGMP - STL

2 stops44h 14mANA

Mon 11/2411:05 amSTL - GMP

2 stops44h 25mANA

Deal found 9/14

$1,272

Wed 11/1912:20 amICN - STL

2 stops38h 36mQatar Airways

Mon 11/242:17 pmSTL - ICN

2 stops35h 58mQatar Airways

Deal found 9/14

$1,619

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 September 16, 2025.

Thu 11/207:30 pmICN - STL

1 stop18h 53mDelta

Mon 11/246:09 pmSTL - ICN

2 stops30h 21mDelta

Deal found 9/14

$635

Sat 10/118:35 pmICN - STL

1 stop17h 28mHawaiian Airlines

Thu 12/255:26 pmSTL - ICN

1 stop34h 09mHawaiian Airlines

Deal found 9/16

$905

Sat 10/1112:45 pmICN - STL

2 stops23h 13mMultiple Airlines

Thu 12/257:00 amSTL - ICN

1 stop31h 20mMultiple Airlines

Deal found 9/16

$927

Thu 2/1212:45 pmICN - STL

2 stops23h 15mUnited Airlines

Mon 2/162:45 pmSTL - ICN

2 stops23h 55mUnited Airlines

Deal found 9/15

$1,069

Thu 2/197:50 pmGMP - STL

2 stops31h 31mANA

Mon 2/237:41 amSTL - GMP

2 stops43h 54mANA

Deal found 9/13

$1,270

Thu 2/126:00 pmICN - STL

1 stop30h 04mDelta

Mon 2/167:30 amSTL - ICN

1 stop17h 50mDelta

Deal found 9/14

$756

Fri 2/136:00 pmICN - STL

1 stop20h 40mDelta

Mon 2/167:30 amSTL - ICN

1 stop17h 50mDelta

Deal found 9/13

$756

Fri 2/1312:45 pmICN - STL

2 stops24h 15mUnited Airlines

Mon 2/162:45 pmSTL - ICN

2 stops23h 55mUnited Airlines

Deal found 9/13

$1,146

Thu 11/2012:25 pmGMP - STL

2 stops44h 14mANA

Mon 11/2411:05 amSTL - GMP

2 stops44h 25mANA

Deal found 9/14

$1,272

Last-minute flights from Seoul to St. Louis
Discover last-minute flight deals from Seoul to St. Louis. Data last updated September 16, 2025 and is based on user searches.

Thu 10/24:40 pmICN - STL

2 stops21h 58mDelta

Fri 10/106:00 amSTL - ICN

2 stops20h 40mDelta

Deal found 9/15

$1,766

Thu 10/25:25 pmICN - STL

2 stops29h 51mAmerican Airlines

Fri 10/107:01 amSTL - ICN

1 stop18h 29mAmerican Airlines

Deal found 9/14

$1,852

Thu 10/26:40 pmICN - STL

1 stop18h 29mMultiple Airlines

Fri 10/107:01 amSTL - ICN

1 stop19h 39mMultiple Airlines

Deal found 9/16

$1,913

Sat 10/48:35 pmICN - STL

1 stop17h 28mAlaska Airlines

Sun 10/126:33 amSTL - ICN

1 stop22h 02mAlaska Airlines

Deal found 9/15

$4,235

Fri 10/101:20 amICN - STL

2 stops33h 06mQatar Airways

Thu 12/259:08 amSTL - ICN

2 stops41h 07mQatar Airways

Deal found 9/16

$2,131

Sat 10/118:35 pmICN - STL

1 stop17h 28mHawaiian Airlines

Thu 12/255:26 pmSTL - ICN

1 stop34h 09mHawaiian Airlines

Deal found 9/16

$905

Sat 10/1112:45 pmICN - STL

2 stops23h 13mMultiple Airlines

Thu 12/257:00 amSTL - ICN

1 stop31h 20mMultiple Airlines

Deal found 9/16

$927

Sat 10/1111:30 amICN - STL

2 stops37h 18mUnited Airlines

Thu 12/256:00 amSTL - ICN

2 stops32h 40mUnited Airlines

Deal found 9/16

$1,106

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 September 16, 2025.

Wed 12/1710:35 amICN - STL

2 stops43h 54mMultiple Airlines

Deal found 9/14

$552

Thu 12/189:20 pmICN - STL

2 stops34h 29mMultiple Airlines

Deal found 9/14

$666

Wed 12/177:15 pmICN - STL

1 stop18h 32mAmerican Airlines

Deal found 9/14

$693

Wed 12/1712:05 pmGMP - STL

2 stops26h 52mJapan Airlines

Deal found 9/14

$891

Thu 12/188:00 amGMP - STL

2 stops26h 31mJapan Airlines

Deal found 9/14

$903

Wed 12/178:00 amGMP - STL

2 stops19h 31mMultiple Airlines

Deal found 9/14

$909

Wed 12/1712:45 pmICN - STL

2 stops22h 03mUnited Airlines

Deal found 9/14

$924

Wed 12/176:55 pmICN - STL

2 stops35h 34mAir Canada

Deal found 9/14

$1,134

Tue 12/1612:20 amICN - STL

2 stops35h 04mQatar Airways

Deal found 9/14

$1,174

Wed 12/177:30 pmICN - STL

1 stop28h 40mDelta

Deal found 9/14

$1,460

Fly from

Fly to

Route

Depart

Return

Price

IncheonSt. Louis

ICN - STL

ICNSTL

Incheon Intl

Thu 11/20

7:30 pm-11:23 pm

1 stop18h 53m

Lambert-St Louis

Mon 11/24

6:09 pm-3:30 pm

2 stops30h 21m

$635

IncheonSt. Louis

ICN - STL

ICNSTL

Incheon Intl

Thu 2/12

6:00 pm-9:04 am

1 stop30h 04m

Lambert-St Louis

Mon 2/16

7:30 am-4:20 pm

1 stop17h 50m

$756

IncheonSt. Louis

ICN - STL

ICNSTL

Incheon Intl

Fri 2/13

6:00 pm-11:40 pm

1 stop20h 40m

Lambert-St Louis

Mon 2/16

7:30 am-4:20 pm

1 stop17h 50m

$756

IncheonSt. Louis

ICN - STL

ICNSTL

Incheon Intl

Sat 10/11

8:35 pm-12:03 am

1 stop17h 28m

Lambert-St Louis

Thu 12/25

5:26 pm-6:35 pm

1 stop34h 09m

$905

IncheonSt. Louis

ICN - STL

ICNSTL

Incheon Intl

Sat 10/11

12:45 pm-9:58 pm

2 stops23h 13m

Lambert-St Louis

Thu 12/25

7:00 am-5:20 am

1 stop31h 20m

$927

IncheonSt. Louis

ICN - STL

ICNSTL

Incheon Intl

Thu 2/12

12:45 pm-9:00 pm

2 stops23h 15m

Lambert-St Louis

Mon 2/16

2:45 pm-5:40 am

2 stops23h 55m

$1,069

IncheonSt. Louis

ICN - STL

ICNSTL

Incheon Intl

Fri 2/13

12:45 pm-10:00 pm

2 stops24h 15m

Lambert-St Louis

Mon 2/16

2:45 pm-5:40 am

2 stops23h 55m

$1,146

SeoulSt. Louis

GMP - STL

GMPSTL

Seoul Gimpo Intl

Thu 2/19

7:50 pm-12:21 pm

2 stops31h 31m

Lambert-St Louis

Mon 2/23

7:41 am-6:35 pm

2 stops43h 54m

$1,270

SeoulSt. Louis

GMP - STL

GMPSTL

Seoul Gimpo Intl

Thu 11/20

12:25 pm-5:39 pm

2 stops44h 14m

Lambert-St Louis

Mon 11/24

11:05 am-10:30 pm

2 stops44h 25m

$1,272

IncheonSt. Louis

ICN - STL

ICNSTL

Incheon Intl

Wed 12/17

10:35 am-3:29 pm

2 stops43h 54m

$552

Flights are sorted by cheapest round-trip flights first.

Deals found on 9/14

Showing 1-10 of 20 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 Delta. Reviews also offer insight into each airline's entertainment options, comfort, food, crew/service, and boarding process.

Delta

8.0

Very good

7,957 reviews

Reviews

1 / 20

6.0

Good

Morgan Rae,Aug 2025

BRU - JFK

Typically I choose delta because they do a great job but this time the flight attendant in my zone was very rude and didnt offer the same treatment as she did to others

Delta

8.0

Very good

7,957 reviews

Delta

8.0

Very good

7,957 reviews

Reviews

1 / 20

6.0

Good

Morgan Rae,Aug 2025

BRU - JFK

Typically I choose delta because they do a great job but this time the flight attendant in my zone was very rude and didnt offer the same treatment as she did to others

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.
How long is the flight from Seoul to St. Louis?
Delta and ANA can get you from Seoul to St. Louis in just under 18h 53m. Your travel time can differ by up to 12h 38m. The distance between Seoul and St. Louis is about 6670 mi. This flight may include one or multiple stops.
What is the cheapest airline to fly from Seoul to St. Louis round-trip?
Currently priced at $687, Delta will fly you from Seoul to St. Louis and back. In addition to Delta, many other airlines offer competitively priced options for your trip.
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

Edwardsville

O'Fallon

Fairview Heights

Maryland Heights

Collinsville

Eureka

Glencoe

St. Peters

Chesterfield

Alton

Farmington

Festus

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Top airline flying from Seoul to St. Louis

Airline	Cheapest	Average	Flexibility	On-time
Delta	Cheapest$687	Average$941	FlexibilityNo cancel fee	On-timeN/A

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$552+ 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 12/17. 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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2. Select your favorite providers

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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 September 16, 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 September 16, 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 Delta. 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?

How long is the flight from Seoul to St. Louis?

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

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 St. Louis?

Browse thousands of different options on Cheapflights for your next trip

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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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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 September 16, 2025.