HomeSearch by dateVacation packagesHotelsFlight dealsCar rentalTravel tips & news
Seoul

$379+ Cheap flights from Missouri to Seoul (SEL)

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 2/13. Fares are subject to change and may not be available on all flights or dates of travel.
STL — SEL
Feb 28 — Mar 71
Sat 2/28
Sat 3/7
1 adult, Economy
We work with more than 300 partners to bring you better travel deals

Find cheap flights from Missouri to Seoul with Cheapflights

1. Tell us where you want to go

Enter your travel information like dates, passengers, trip type (one-way or round trip), and preferred cabin class then click “Find deals”

2. Select your favorite providers

We find the providers serving your travel needs. Choose up to four travel providers to compare side-by-side for flights, hotels, or car rentals.

3. Compare prices and book

Review each provider’s pricing and select the best option for you! Book through your favorite provider’s website for a seamless experience.

Cheap flight deals from Missouri to Seoul

Cheapest flights from Missouri to Seoul
Explore the most affordable flight options available from Missouri to Seoul. Find the lowest fares from popular airlines and budget airlines, with prices last updated on January 29, 2026.

This Kiwi.com deal was found by Cheapflights users on 1/27. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 3/57:00 am
STL
-
ICN
1 stop20h 35m
Multiple Airlines
Sun 3/158:35 pm
ICN
-
STL
1 stop17h 24m
Multiple Airlines
Deal found 1/27$753
This Kiwi.com deal was found by Cheapflights users on 1/27. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 1/302:45 pm
MCI
-
ICN
1 stop36h 50m
Multiple Airlines
Thu 2/58:35 pm
ICN
-
MCI
1 stop32h 15m
Multiple Airlines
Deal found 1/27$840
This Expedia deal was found by Cheapflights users on 1/28. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Expedia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 1/313:32 pm
MCI
-
ICN
1 stop36h 03m
Multiple Airlines
Mon 2/28:35 pm
ICN
-
MCI
1 stop32h 15m
Multiple Airlines
Deal found 1/28$841
This Delta deal was found by Cheapflights users on 1/28. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 4/167:02 am
STL
-
ICN
1 stop18h 18m
Delta
Wed 4/224:25 pm
ICN
-
STL
1 stop21h 09m
Delta
Deal found 1/28$847
This United Airlines deal was found by Cheapflights users on 1/27. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 5/24:15 pm
STL
-
ICN
2 stops22h 05m
United Airlines
Tue 5/1211:30 am
ICN
-
STL
1 stop20h 52m
United Airlines
Deal found 1/27$851
This United Airlines deal was found by Cheapflights users on 1/27. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 5/28:30 am
STL
-
ICN
1 stop40h 30m
United Airlines
Fri 5/154:50 pm
ICN
-
STL
1 stop26h 57m
United Airlines
Deal found 1/27$854
This United Airlines deal was found by Cheapflights users on 1/27. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 5/38:30 am
STL
-
ICN
1 stop29h 50m
United Airlines
Fri 5/1511:30 am
ICN
-
STL
2 stops19h 27m
United Airlines
Deal found 1/27$859
This United Airlines deal was found by Cheapflights users on 1/27. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 8/227:06 pm
STL
-
ICN
1 stop19h 14m
United Airlines
Tue 9/14:50 pm
ICN
-
STL
2 stops36h 31m
United Airlines
Deal found 1/27$860
This Alaska Airlines deal was found by Cheapflights users on 1/27. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 8/217:32 pm
STL
-
ICN
1 stop31h 58m
Alaska Airlines
Wed 9/27:35 pm
ICN
-
STL
1 stop37h 02m
Alaska Airlines
Deal found 1/27$862
This United Airlines deal was found by Cheapflights users on 1/27. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 8/215:20 am
STL
-
ICN
2 stops19h 40m
United Airlines
Tue 9/14:50 pm
ICN
-
STL
2 stops36h 31m
United Airlines
Deal found 1/27$864
This Delta deal was found by Cheapflights users on 1/27. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 5/56:20 am
STL
-
ICN
1 stop21h 00m
Delta
Sat 5/97:40 pm
ICN
-
STL
1 stop17h 21m
Delta
Deal found 1/27$867
This Delta deal was found by Cheapflights users on 1/27. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 8/216:30 am
STL
-
ICN
2 stops20h 20m
Delta
Tue 9/17:20 pm
ICN
-
STL
1 stop19h 16m
Delta
Deal found 1/27$871

Find flight deals from Missouri to Seoul

Keep the following information in mind while searching for Missouri to Seoul flight deals. Data was last updated January 29, 2026.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$753
(Kiwi.com)

One-way from

$379
(Kiwi.com)

Popular in

July

Cheapest in

October

Average price

$866
Provider with most accurate pricing for Lambert-St Louis-Seoul (SEL) flight deals.
Search Deals
Provider most trusted by Cheapflights users for Lambert-St Louis-Seoul (SEL) flights.
Search Deals
From Missouri to Seoul (SEL)
Search Deals
One-way flight from Missouri to Seoul (SEL)
Search Deals
Highest demand for flights based on searches. 23% potential increase in price ($321 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 3% potential price decrease ($32 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in January 2026
Search Deals

Cheapflights Fare Finder

 
Customize your flight search to find flights from Missouri to Seoul that fit within your specific budget. Explore options based on user searches and filter the results based on your desired price range. Find flights that match your budget for a cost-effective journey. Over the last 7 days, Cheapflights users made 2,558,603 searches. Data last updated January 29, 2026.
Use the filters below to find and compare flights from Missouri to Seoul that are best for you.

Fly from

Missouri

Fly to

Seoul

Route

Depart

Return

Price

St. LouisIncheon

STL - ICN

STLICN

Lambert-St Louis

Sat 4/25

9:31 am-4:00 am

1 stop28h 29m

Incheon Intl

Wed 5/6

6:50 pm-8:07 am

1 stop27h 17m

$847

St. LouisIncheon

STL - ICN

STLICN

Lambert-St Louis

Thu 4/16

7:00 am-6:35 pm

1 stop21h 35m

Incheon Intl

Wed 4/22

7:35 pm-11:59 pm

1 stop18h 24m

$847

St. LouisIncheon

STL - ICN

STLICN

Lambert-St Louis

Thu 4/16

6:48 am-4:25 pm

1 stop19h 37m

Incheon Intl

Wed 4/22

4:25 pm-11:34 pm

1 stop21h 09m

$847

St. LouisIncheon

STL - ICN

STLICN

Lambert-St Louis

Sun 4/19

4:41 pm-4:00 am

1 stop21h 19m

Incheon Intl

Tue 4/28

7:20 pm-12:25 am

1 stop19h 05m

$847

St. LouisIncheon

STL - ICN

STLICN

Lambert-St Louis

Sat 5/2

4:15 pm-4:20 am

2 stops22h 05m

Incheon Intl

Mon 5/11

4:50 pm-9:30 am

2 stops30h 40m

$851

St. LouisIncheon

STL - ICN

STLICN

Lambert-St Louis

Sat 5/2

4:15 pm-4:20 am

2 stops22h 05m

Incheon Intl

Thu 5/14

4:50 pm-8:18 am

2 stops29h 28m

$851

SpringfieldIncheon

SGF - ICN

SGFICN

Springfield-Branson

Wed 4/15

7:08 am-3:45 pm

1 stop18h 37m

Incheon Intl

Fri 5/22

5:40 pm-12:17 pm

1 stop32h 37m

$873

Kansas CityIncheon

MCI - ICN

MCIICN

Kansas City

Mon 2/16

11:32 am-5:40 am

2 stops27h 08m

Incheon Intl

Fri 2/20

12:45 pm-3:04 pm

2 stops41h 19m

$921

Kansas CityIncheon

MCI - ICN

MCIICN

Kansas City

Thu 2/26

5:54 am-4:15 pm

2 stops19h 21m

Incheon Intl

Thu 3/5

6:00 pm-10:30 pm

2 stops19h 30m

$931

Kansas CityIncheon

MCI - ICN

MCIICN

Kansas City

Sun 2/22

6:30 am-4:50 pm

1 stop19h 20m

Incheon Intl

Sat 6/27

7:40 pm-10:52 pm

1 stop17h 12m

$962

Flights are sorted by cheapest round-trip flights first.

Deals found on 1/26

Showing 1-10 of 58 results
1
2
3
...
6

Best time to book a flight from Missouri to Seoul

Have a flexible travel schedule? Discover the best time to fly to Seoul from Missouri 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 Missouri to Seoul

What is the cheapest month to book a flight from Missouri to Seoul?

Currently, April is the cheapest month in which you can book a flight from Missouri to Seoul (average of $667). Flying from Missouri to Seoul in July is currently the most expensive (average of $1,204). 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.

Related info for your journey

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

  • How long is the flight from Missouri to Seoul?

    There are many flights that can get you from Missouri to Seoul in 18h 37m. Fly via Delta, American Airlines, or United Airlines to get the fastest option. There are 6679 mi between Missouri and Seoul. Both multi-stop and nonstop flights can be found to your destination and back.

  • What are the most popular routes from Missouri to Seoul?

    Most travelers choose Lambert-St Louis - Incheon Intl, Kansas City - Incheon Intl or Lambert-St Louis - Seoul Gimpo Intl when deciding on the best route from Missouri to Seoul.

  • Can I find deals for flights from Missouri to Seoul that include hotel bookings?

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

  • How can I find direct flights from Missouri to Seoul?

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

  • Can I find deals for business class flights from Missouri to Seoul?

    Yes. Cheapflights offers flight deals from Missouri to Seoul 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 Missouri to Seoul?

    Currently, April is the cheapest month in which you can book a flight from Missouri to Seoul (average of $667). Flying from Missouri to Seoul in July is currently the most expensive (average of $1,204). 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

Browse thousands of different options on Cheapflights for your next trip

Toggle through the tabs below to find thousands of options on Cheapflights for your next trip.

Alternative routes for Missouri to Seoul

See prices for flight routes from nearby airports that may be better suited for you.
Los Angeles to Incheon Intl flights
John F Kennedy Intl to Incheon Intl flights
Seattle to Incheon Intl flights
San Francisco to Incheon Intl flights
Dallas/Fort Worth to Incheon Intl flights
Dulles Intl to Incheon Intl flights
Los Angeles to Gimpo Intl flights
San Francisco to Gimpo Intl flights
John F Kennedy Intl to Gimpo Intl flights
Newark to Incheon Intl flights
O'Hare Intl to Incheon Intl flights
LaGuardia to Incheon Intl flights
Atlanta to Incheon Intl flights
Seattle to Gimpo Intl flights
Boston to Incheon Intl flights
Ontario to Incheon Intl flights
Honolulu to Incheon Intl flights
Hobby to Incheon Intl flights
Reagan-National to Incheon Intl flights
Dallas/Fort Worth to Gimpo Intl flights
Baltimore to Incheon Intl flights
Dulles Intl to Gimpo Intl flights
Minneapolis to Incheon Intl flights
Orlando to Incheon Intl flights
Love Field to Incheon Intl flights
George Bush Intcntl to Incheon Intl flights
Salt Lake City to Incheon Intl flights
Newark to Gimpo Intl flights
O'Hare Intl to Gimpo Intl flights
Boston to Gimpo Intl flights
Santa Ana to Incheon Intl flights
San Jose to Incheon Intl flights
Austin to Incheon Intl flights
Baltimore to Gimpo Intl flights
Philadelphia to Incheon Intl flights
Oakland to Incheon Intl flights
Portland to Incheon Intl flights
Honolulu to Gimpo Intl flights
Burbank to Incheon Intl flights
Las Vegas to Incheon Intl flights
Atlanta to Gimpo Intl flights
Reagan-National to Gimpo Intl flights
Raleigh to Incheon Intl flights
San Diego to Incheon Intl flights
Detroit to Incheon Intl flights
Orlando to Gimpo Intl flights
Miami to Incheon Intl flights
Sky Harbor Intl to Incheon Intl flights
Denver to Incheon Intl flights

Top 5 airlines flying from Missouri to Seoul

Discover the top 5 airlines that operate flights from Missouri to Seoul. Compare their services, reliability, and customer satisfaction ratings to choose the airline that best suits your travel preferences and needs. Over the last 7 days, Cheapflights users made 2,558,603 searches. Data last updated January 29, 2026.
AirlineCheapestAverageFlexibilityOn-time
Air CanadaCheapest$799Average$1,098FlexibilityNo cancel feeOn-time67%
American AirlinesCheapest$846Average$1,702FlexibilityNo cancel feeOn-time71%
DeltaCheapest$846Average$1,255FlexibilityNo cancel feeOn-timeN/A
United AirlinesCheapest$870Average$1,500FlexibilityNo cancel feeOn-time69%
Korean AirCheapest$1,046Average$1,898FlexibilityNo cancel feeOn-time81%

100% Free

Cheapflights is completely free to use, so you can start saving the moment you arrive.

Book with Flexibility

Our users can plan ahead with confidence and find flights with no change fees

Travel Smart

Millions of people come to us for their flight needs every year. We help make travel planning easy by providing useful insights and data-driven graphs that can inform your decisions.