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$498+ 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 4/7. Fares are subject to change and may not be available on all flights or dates of travel.
STL — SEL
May 1 — May 81
Fri 5/1
Fri 5/8
1 adult, Economy
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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 April 1, 2026.

This United Airlines deal was found by Cheapflights users on 3/27. 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.
Mon 4/207:05 pm
STL
-
ICN
1 stop19h 15m
United Airlines
Mon 5/44:50 pm
ICN
-
STL
1 stop26h 57m
United Airlines
Deal found 3/27$966
This United Airlines deal was found by Cheapflights users on 3/27. 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 10/165:20 am
STL
-
ICN
2 stops19h 40m
United Airlines
Sun 10/255:30 pm
ICN
-
STL
2 stops21h 04m
United Airlines
Deal found 3/27$971
This Air Canada deal was found by Cheapflights users on 3/30. 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 Air Canada is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 5/77:05 am
STL
-
ICN
1 stop20h 25m
Air Canada
Wed 6/106:00 pm
ICN
-
STL
1 stop40h 25m
Air Canada
Deal found 3/30$981
This Air Canada deal was found by Cheapflights users on 3/29. 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 Air Canada is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 9/222:40 pm
STL
-
ICN
2 stops35h 25m
Air Canada
Mon 9/287:05 pm
ICN
-
STL
1 stop32h 55m
Air Canada
Deal found 3/29$984
This Air Canada deal was found by Cheapflights users on 3/30. 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 Air Canada is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 5/77:05 am
STL
-
ICN
1 stop20h 25m
Air Canada
Thu 6/115:45 pm
ICN
-
STL
2 stops32h 21m
Air Canada
Deal found 3/30$985
This KAYAK deal was found by Cheapflights users on 3/27. 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 KAYAK is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 4/204:49 pm
STL
-
ICN
2 stops21h 31m
Asiana Airlines
Mon 5/44:50 pm
ICN
-
STL
2 stops30h 40m
Asiana Airlines
Deal found 3/27$991
This FlightHub deal was found by Cheapflights users on 3/29. 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 FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 11/14:15 pm
STL
-
ICN
1 stop35h 10m
Air Canada
Thu 11/56:55 pm
ICN
-
STL
2 stops35h 35m
Air Canada
Deal found 3/29$994
This FlightHub deal was found by Cheapflights users on 3/28. 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 FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 10/512:10 pm
STL
-
ICN
2 stops37h 55m
Air Canada
Tue 10/205:45 pm
ICN
-
STL
2 stops34h 15m
Air Canada
Deal found 3/28$1,003
This FlightHub deal was found by Cheapflights users on 3/28. 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 FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 10/68:55 am
STL
-
ICN
1 stop18h 35m
Air Canada
Tue 10/205:45 pm
ICN
-
STL
2 stops34h 15m
Air Canada
Deal found 3/28$1,008
This American Airlines deal was found by Cheapflights users on 3/31. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 9/56:00 am
SGF
-
ICN
1 stop19h 45m
American Airlines
Sun 9/135:50 pm
ICN
-
SGF
1 stop16h 40m
American Airlines
Deal found 3/31$1,166
This Justfly.com deal was found by Cheapflights users on 3/30. 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 Justfly.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 10/293:24 pm
STL
-
GMP
2 stops31h 26m
Multiple Airlines
Fri 11/61:50 pm
GMP
-
STL
2 stops49h 09m
Multiple Airlines
Deal found 3/30$1,167
This KAYAK deal was found by Cheapflights users on 3/28. 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 KAYAK is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 9/137:00 am
MCI
-
ICN
2 stops38h 55m
China Eastern
Sat 9/1912:55 pm
ICN
-
MCI
2 stops48h 15m
China Eastern
Deal found 3/28$1,176

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 April 1, 2026.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$966
(United Airlines)

One-way from

$498
(United Airlines)

Popular in

July

Cheapest in

February

Average price

$891
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. 21% potential increase in price ($303 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 3% potential price decrease ($38 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in April 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 April 1, 2026.
Use the filters below to find and compare flights from Missouri to Seoul that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

St. LouisIncheon

STL - ICN

STLICN

Lambert-St Louis

Mon 4/20

7:05 pm-4:20 am

1 stop19h 15m

Incheon Intl

Mon 5/4

4:50 pm-5:47 am

1 stop26h 57m

$966

St. LouisIncheon

STL - ICN

STLICN

Lambert-St Louis

Thu 4/16

2:40 pm-4:20 am

2 stops23h 40m

Incheon Intl

Wed 4/22

4:50 pm-8:25 am

2 stops29h 35m

$1,090

St. LouisIncheon

STL - ICN

STLICN

Lambert-St Louis

Wed 4/15

8:54 am-4:20 am

2 stops29h 26m

Incheon Intl

Wed 4/22

4:50 pm-8:25 am

2 stops29h 35m

$1,090

St. LouisIncheon

STL - ICN

STLICN

Lambert-St Louis

Thu 4/16

9:26 am-5:20 pm

1 stop17h 54m

Incheon Intl

Wed 4/22

7:20 pm-12:25 am

1 stop19h 05m

$1,166

SpringfieldIncheon

SGF - ICN

SGFICN

Springfield-Branson

Sat 9/5

6:00 am-3:45 pm

1 stop19h 45m

Incheon Intl

Sun 9/13

5:50 pm-9:38 am

2 stops29h 48m

$1,171

St. LouisIncheon

STL - ICN

STLICN

Lambert-St Louis

Wed 4/15

6:19 am-4:50 pm

2 stops20h 31m

Incheon Intl

Wed 4/22

7:20 pm-12:25 am

1 stop19h 05m

$1,171

Kansas CityIncheon

MCI - ICN

MCIICN

Kansas City

Tue 5/5

2:58 pm-5:15 am

1 stop24h 17m

Incheon Intl

Wed 5/27

1:00 pm-1:49 pm

2 stops38h 49m

$1,275

St. LouisSeoul

STL - GMP

STLGMP

Lambert-St Louis

Tue 9/22

9:46 am-9:15 pm

2 stops21h 29m

Seoul Gimpo Intl

Mon 9/28

8:00 am-6:37 pm

2 stops24h 37m

$1,314

Kansas CityIncheon

MCI - ICN

MCIICN

Kansas City

Wed 4/8

5:00 am-5:05 pm

2 stops46h 05m

Incheon Intl

Tue 4/14

1:20 am-10:20 pm

2 stops59h 00m

$1,392

Kansas CityIncheon

MCI - ICN

MCIICN

Kansas City

Tue 4/21

7:00 am-3:00 pm

1 stop18h 00m

Incheon Intl

Thu 4/30

4:50 pm-10:30 pm

1 stop19h 40m

$1,392

Flights are sorted by cheapest round-trip flights first.

Deals found on 3/27

Showing 1-10 of 60 resultsSorted by cheapest first
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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, March is the cheapest month in which you can book a flight from Missouri to Seoul (average of $589). Flying from Missouri to Seoul in July is currently the most expensive (average of $1,272). 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.

How much does it cost to fly round-trip from Missouri to Seoul?

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 17h 54m. Fly via United Airlines, Delta, or American Airlines to get the fastest option. There are 6670 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, March is the cheapest month in which you can book a flight from Missouri to Seoul (average of $589). Flying from Missouri to Seoul in July is currently the most expensive (average of $1,272). 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

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Top 4 airlines flying from Missouri to Seoul

Discover the top 4 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 April 1, 2026.
AirlineCheapestAverageFlexibilityOn-time
DeltaCheapest$769Average$1,218FlexibilityNo cancel feeOn-timeN/A
American AirlinesCheapest$846Average$1,555FlexibilityNo cancel feeOn-time71%
United AirlinesCheapest$865Average$1,342FlexibilityNo cancel feeOn-time69%
Air CanadaCheapest$1,083Average$1,475FlexibilityNo cancel feeOn-time67%

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