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$448+ 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 11/5. Fares are subject to change and may not be available on all flights or dates of travel.
STL — ICN
Nov 29 — Dec 61
Sat 11/29
Sat 12/6
1 adult, Economy
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Cheap 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 October 30, 2025.

Most accurate provider

eDreams
3 stars

Most trusted provider

eDreams
3 stars

Round-trip from

$787
(Orbitz)

One-way from

$448
(American Airlines)

Popular in

August

Cheapest in

October

Average price

$866
Provider with most accurate pricing for Lambert-St Louis-Seoul (SEL) flight deals.
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Provider most trusted by Cheapflights users for Lambert-St Louis-Seoul (SEL) flights.
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From Missouri to South Korea
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One-way flight from Missouri to South Korea
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Highest demand for flights based on searches. 11% potential increase in price ($145 potential increase over avg. RT price).
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Cheapest flight prices on average. 3% potential price decrease ($34 potential savings vs. average RT price).
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Average for round-trip flights in October 2025
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Find 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 October 30, 2025.

This Orbitz deal was found by Cheapflights users on 10/29. 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 Orbitz is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 11/244:05 pmSTL - ICN
2 stops34h 05mAir Canada
Sat 12/68:10 pmICN - STL
1 stop34h 19mAir Canada
Deal found 10/29$787
This United Airlines deal was found by Cheapflights users on 10/28. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 11/1012:31 pmSTL - ICN
2 stops26h 09mUnited Airlines
Thu 11/276:00 pmICN - STL
2 stops33h 28mUnited Airlines
Deal found 10/28$796
This United Airlines deal was found by Cheapflights users on 10/27. 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.
Wed 10/295:29 pmSTL - ICN
1 stop21h 11mUnited Airlines
Tue 11/412:45 pmICN - STL
1 stop18h 42mUnited Airlines
Deal found 10/27$800
This American Airlines deal was found by Cheapflights users on 10/28. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 11/107:00 amSTL - ICN
1 stop18h 45mAmerican Airlines
Thu 11/277:15 pmICN - STL
1 stop30h 24mAmerican Airlines
Deal found 10/28$842
This Delta deal was found by Cheapflights users on 10/28. 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 10/308:53 amSTL - ICN
1 stop16h 37mDelta
Sat 11/17:30 pmICN - STL
1 stop17h 37mDelta
Deal found 10/28$846
This Delta deal was found by Cheapflights users on 10/29. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 10/296:00 amSTL - ICN
1 stop19h 50mDelta
Tue 11/48:05 pmICN - STL
2 stops19h 19mDelta
Deal found 10/29$850
This American Airlines deal was found by Cheapflights users on 10/29. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 11/105:32 amSGF - ICN
1 stop20h 13mAmerican Airlines
Mon 11/177:15 pmICN - SGF
1 stop16h 32mAmerican Airlines
Deal found 10/29$866
This Delta deal was found by Cheapflights users on 10/29. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 11/286:15 pmSTL - ICN
2 stops31h 15mDelta
Fri 12/59:35 amICN - STL
2 stops23h 21mDelta
Deal found 10/29$871
This American Airlines deal was found by Cheapflights users on 10/29. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 11/37:03 amSGF - ICN
1 stop18h 42mAmerican Airlines
Sat 11/87:15 pmICN - SGF
1 stop28h 40mAmerican Airlines
Deal found 10/29$872
This United Airlines deal was found by Cheapflights users on 10/28. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 11/91:47 pmMCI - ICN
2 stops24h 53mUnited Airlines
Thu 11/1312:45 pmICN - MCI
1 stop18h 52mUnited Airlines
Deal found 10/28$1,028
This United Airlines deal was found by Cheapflights users on 10/27. 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 11/11:47 pmMCI - ICN
2 stops24h 53mUnited Airlines
Sat 11/1512:45 pmICN - MCI
2 stops25h 57mUnited Airlines
Deal found 10/27$1,032
This Alaska Airlines deal was found by Cheapflights users on 10/27. 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.
Sat 11/17:00 amMCI - ICN
1 stop21h 35mAlaska Airlines
Sat 11/158:35 pmICN - MCI
1 stop32h 27mAlaska Airlines
Deal found 10/27$1,037

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 October 30, 2025.
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

Mon 11/24

4:05 pm-5:10 pm

2 stops34h 05m

Incheon Intl

Sat 12/6

8:10 pm-3:29 pm

1 stop34h 19m

$787

St. LouisIncheon

STL - ICN

STLICN

Lambert-St Louis

Mon 11/10

5:29 pm-5:40 am

1 stop21h 11m

Incheon Intl

Thu 11/27

12:45 pm-5:39 pm

2 stops43h 54m

$796

St. LouisIncheon

STL - ICN

STLICN

Lambert-St Louis

Mon 11/10

7:00 am-4:45 pm

1 stop18h 45m

Incheon Intl

Thu 11/27

7:15 pm-10:39 am

1 stop30h 24m

$842

St. LouisIncheon

STL - ICN

STLICN

Lambert-St Louis

Mon 11/24

6:40 am-4:50 pm

1 stop19h 10m

Incheon Intl

Sat 12/6

9:35 am-1:53 pm

1 stop19h 18m

$846

St. LouisIncheon

STL - ICN

STLICN

Lambert-St Louis

Mon 11/10

7:47 pm-4:30 pm

2 stops29h 43m

Incheon Intl

Thu 11/27

7:25 pm-9:58 pm

1 stop17h 33m

$850

St. LouisIncheon

STL - ICN

STLICN

Lambert-St Louis

Fri 11/28

5:17 am-4:45 pm

1 stop20h 28m

Incheon Intl

Fri 12/5

7:15 pm-10:47 pm

1 stop18h 32m

$866

SpringfieldIncheon

SGF - ICN

SGFICN

Springfield-Branson

Mon 11/10

5:32 am-4:45 pm

1 stop20h 13m

Incheon Intl

Mon 11/17

7:15 pm-8:47 pm

1 stop16h 32m

$866

St. LouisIncheon

STL - ICN

STLICN

Lambert-St Louis

Fri 11/28

6:15 pm-4:30 pm

2 stops31h 15m

Incheon Intl

Fri 12/5

9:35 am-5:56 pm

2 stops23h 21m

$871

St. LouisSeoul

STL - GMP

STLGMP

Lambert-St Louis

Mon 2/9

6:00 am-10:05 pm

2 stops49h 05m

Seoul Gimpo Intl

Fri 2/20

8:00 am-11:48 pm

2 stops30h 48m

$901

Kansas CityIncheon

MCI - ICN

MCIICN

Kansas City

Sun 11/16

6:00 am-4:15 pm

2 stops19h 15m

Incheon Intl

Thu 11/20

12:45 pm-4:37 pm

1 stop18h 52m

$1,028

Flights are sorted by cheapest round-trip flights first.

Deals found on 10/29

Showing 1-10 of 52 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 $727). Flying from Missouri to South Korea in July is currently the most expensive (average of $1,285). 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 October 30, 2025.

It’s typically best to fly out from Missouri to South Korea in the evening. Doing so could potentially save you 53% 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 December 16, 2024.

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 Air Canada, United Airlines, and American Airlines fly from Missouri to South Korea in about 18h 45m. The time it takes to get you to your destination can typically vary by up to 15h 20m. There are 6670 mi between Missouri and South Korea. Both multi-stop and nonstop flights can be found to your destination and back.

  • 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 $727). Flying from Missouri to South Korea in July is currently the most expensive (average of $1,285). 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

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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 October 30, 2025.
AirlineCheapestAverageFlexibilityOn-time
Air CanadaCheapest$799Average$1,106FlexibilityNo cancel feeOn-time67%
American AirlinesCheapest$846Average$1,671FlexibilityNo cancel feeOn-time71%
DeltaCheapest$846Average$1,271FlexibilityNo cancel feeOn-timeN/A
United AirlinesCheapest$877Average$1,579FlexibilityNo cancel feeOn-time69%
Korean AirCheapest$1,046Average$1,833FlexibilityNo cancel feeOn-time81%

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