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$379+ Cheap flights from Missouri to South Korea

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 — ICN
févr. 28 — mars 71
sam. 2/28
sam. 3/7
1 adult, Economy
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Cheap flight deals from Missouri to South Korea

Cheapest flights from Missouri to South Korea
Explore the most affordable flight options available from Missouri to South Korea. Find the lowest fares from popular airlines and budget airlines, with prices last updated on janvier 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.
jeu. 3/57:00 am
STL
-
ICN
1 stop20h 35m
Multiple Airlines
dim. 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.
ven. 1/302:45 pm
MCI
-
ICN
1 stop36h 50m
Multiple Airlines
jeu. 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.
sam. 1/313:32 pm
MCI
-
ICN
1 stop36h 03m
Multiple Airlines
lun. 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.
jeu. 4/167:02 am
STL
-
ICN
1 stop18h 18m
Delta
mer. 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.
sam. 5/24:15 pm
STL
-
ICN
2 stops22h 05m
United Airlines
mar. 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.
sam. 5/28:30 am
STL
-
ICN
1 stop40h 30m
United Airlines
ven. 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.
dim. 5/38:30 am
STL
-
ICN
1 stop29h 50m
United Airlines
ven. 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.
sam. 8/227:06 pm
STL
-
ICN
1 stop19h 14m
United Airlines
mar. 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.
ven. 8/217:32 pm
STL
-
ICN
1 stop31h 58m
Alaska Airlines
mer. 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.
ven. 8/215:20 am
STL
-
ICN
2 stops19h 40m
United Airlines
mar. 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.
mar. 5/56:20 am
STL
-
ICN
1 stop21h 00m
Delta
sam. 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.
ven. 8/216:30 am
STL
-
ICN
2 stops20h 20m
Delta
mar. 9/17:20 pm
ICN
-
STL
1 stop19h 16m
Delta
Deal found 1/27$871

Find flight deals from Missouri to South Korea

Keep the following information in mind while searching for Missouri to South Korea flight deals. Data was last updated janvier 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 South Korea
Search Deals
One-way flight from Missouri to South Korea
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 South Korea 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 janvier 29, 2026.
Use the filters below to find and compare flights from Missouri to South Korea that are best for you.

Fly from

Missouri

Fly to

South Korea

Route

Depart

Return

Price

St. LouisIncheon

STL - ICN

STLICN

Lambert-St Louis

sam. 4/25

9:31 am-4:00 am

1 stop28h 29m

Incheon Intl

mer. 5/6

6:50 pm-8:07 am

1 stop27h 17m

$847

St. LouisIncheon

STL - ICN

STLICN

Lambert-St Louis

jeu. 4/16

7:00 am-6:35 pm

1 stop21h 35m

Incheon Intl

mer. 4/22

7:35 pm-11:59 pm

1 stop18h 24m

$847

St. LouisIncheon

STL - ICN

STLICN

Lambert-St Louis

jeu. 4/16

6:48 am-4:25 pm

1 stop19h 37m

Incheon Intl

mer. 4/22

4:25 pm-11:34 pm

1 stop21h 09m

$847

St. LouisIncheon

STL - ICN

STLICN

Lambert-St Louis

dim. 4/19

4:41 pm-4:00 am

1 stop21h 19m

Incheon Intl

mar. 4/28

7:20 pm-12:25 am

1 stop19h 05m

$847

St. LouisIncheon

STL - ICN

STLICN

Lambert-St Louis

sam. 5/2

4:15 pm-4:20 am

2 stops22h 05m

Incheon Intl

lun. 5/11

4:50 pm-9:30 am

2 stops30h 40m

$851

St. LouisIncheon

STL - ICN

STLICN

Lambert-St Louis

sam. 5/2

4:15 pm-4:20 am

2 stops22h 05m

Incheon Intl

jeu. 5/14

4:50 pm-8:18 am

2 stops29h 28m

$851

SpringfieldIncheon

SGF - ICN

SGFICN

Springfield-Branson

mer. 4/15

7:08 am-3:45 pm

1 stop18h 37m

Incheon Intl

ven. 5/22

5:40 pm-12:17 pm

1 stop32h 37m

$873

Kansas CityIncheon

MCI - ICN

MCIICN

Kansas City

lun. 2/16

11:32 am-5:40 am

2 stops27h 08m

Incheon Intl

ven. 2/20

12:45 pm-3:04 pm

2 stops41h 19m

$921

Kansas CityIncheon

MCI - ICN

MCIICN

Kansas City

jeu. 2/26

5:54 am-4:15 pm

2 stops19h 21m

Incheon Intl

jeu. 3/5

6:00 pm-10:30 pm

2 stops19h 30m

$931

Kansas CityIncheon

MCI - ICN

MCIICN

Kansas City

dim. 2/22

6:30 am-4:50 pm

1 stop19h 20m

Incheon Intl

sam. 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
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Best time to book a flight from Missouri to South Korea

Have a flexible travel schedule? Discover the best time to fly to South Korea 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 South Korea

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

Currently, April is the cheapest month in which you can book a flight from Missouri to South Korea (average of $667). Flying from Missouri to South Korea 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.

What is the cheapest time of day to fly from MO to KR?

Find hourly flight availability from Missouri to South Korea. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated janvier 29, 2026.

It’s typically best to fly out from Missouri to South Korea in the evening. Doing so could potentially save you 61% on the flight price compared to flying in the morning, which is usually more expensive.

What is the cheapest day to fly from Missouri to South Korea?

Use this chart to determine the cheapest time to fly round-trip from Missouri to South Korea. Price data was last updated on March 30, 2025.

Travelers seeking maximum savings on their Missouri to South Korea flight should consider departing on Sunday afternoons when fares are most often at their lowest. Saturday mornings flights should be avoided if possible as fares are typically the most expensive at this time.

Related info for your journey

Find useful and relevant information for your journey from Missouri to South Korea. 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 South Korea?

    Airlines like Delta, American Airlines, and United Airlines fly from Missouri to South Korea in about 18h 37m. The time it takes to get you to your destination can typically vary by up to 9h 52m. There are 6679 mi between Missouri and South Korea. Both multi-stop and nonstop flights can be found to your destination and back.

  • What are the cheapest airlines to fly from Missouri to South Korea one-way?

    The cheapest airlines for a one-way flight from Missouri to South Korea are American Airlines ($87), Southwest ($95), and Delta ($123).

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

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

  • How can I find direct flights from Missouri to South Korea?

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

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

    Yes. Cheapflights offers flight deals from Missouri to South Korea 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 South Korea?

    Currently, April is the cheapest month in which you can book a flight from Missouri to South Korea (average of $667). Flying from Missouri to South Korea 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

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Alternative routes for Missouri to South Korea

See prices for flight routes from nearby airports that may be better suited for you.
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Top 5 airlines flying from Missouri to South Korea

Discover the top 5 airlines that operate flights from Missouri to South Korea. 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 janvier 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%

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