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$464+ 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 11/24. Fares are subject to change and may not be available on all flights or dates of travel.
STL — SEL
Dec 2 — Dec 91
Tue 12/2
Tue 12/9
1 adult, Economy
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Cheap flight deals from Missouri to Seoul

Keep the following information in mind while searching for Missouri to Seoul flight deals. Data was last updated November 2, 2025.

Most accurate provider

eDreams
3 stars

Most trusted provider

eDreams
3 stars

Round-trip from

$759
(Alaska Airlines)

One-way from

$464
(American Airlines)

Popular in

August

Cheapest in

October

Average price

$1,068
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 Seoul (SEL)
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One-way flight from Missouri to Seoul (SEL)
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Highest demand for flights based on searches. 11% potential increase in price ($151 potential increase over avg. RT price).
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Cheapest flight prices on average. 3% potential price decrease ($35 potential savings vs. average RT price).
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Average for round-trip flights in November 2025
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Find 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 November 2, 2025.

This American Airlines deal was found by Cheapflights users on 11/1. 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 11/1$838
This American Airlines deal was found by Cheapflights users on 10/31. 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.
Mon 11/105:17 amSTL - ICN
1 stop20h 28mAmerican Airlines
Mon 11/247:15 pmICN - STL
1 stop18h 44mAmerican Airlines
Deal found 10/31$846
This American Airlines deal was found by Cheapflights users on 10/30. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 11/285:17 amSTL - ICN
1 stop20h 28mAmerican Airlines
Fri 12/57:15 pmICN - STL
1 stop18h 32mAmerican Airlines
Deal found 10/30$856
This United Airlines deal was found by Cheapflights users on 11/2. 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 11/101:35 pmSTL - ICN
2 stops25h 05mUnited Airlines
Thu 11/2712:45 pmICN - STL
2 stops48h 09mUnited Airlines
Deal found 11/2$859
This American Airlines deal was found by Cheapflights users on 11/1. 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.
Tue 11/47:00 amSTL - ICN
1 stop18h 45mAmerican Airlines
Thu 11/67:15 pmICN - STL
1 stop28h 40mAmerican Airlines
Deal found 11/1$862
This United Airlines deal was found by Cheapflights users on 10/31. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 11/13:14 pmSTL - ICN
2 stops23h 26mUnited Airlines
Sat 11/812:45 pmICN - STL
1 stop18h 42mUnited Airlines
Deal found 10/31$866
This Delta deal was found by Cheapflights users on 11/1. 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.
Sun 11/23:59 pmSTL - ICN
1 stop22h 46mDelta
Sun 11/97:30 pmICN - STL
2 stops19h 14mDelta
Deal found 11/1$871
This United Airlines deal was found by Cheapflights users on 11/1. 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.
Tue 11/411:05 amSTL - ICN
2 stops27h 35mUnited Airlines
Thu 11/66:00 pmICN - STL
1 stop37h 27mUnited Airlines
Deal found 11/1$878
This American Airlines deal was found by Cheapflights users on 10/31. 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.
Thu 12/45:13 amMCI - ICN
1 stop20h 32mAmerican Airlines
Thu 12/117:15 pmICN - MCI
1 stop18h 27mAmerican Airlines
Deal found 10/31$907
This American Airlines deal was found by Cheapflights users on 11/1. 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.
Fri 11/75:15 amMCI - ICN
1 stop20h 30mAmerican Airlines
Mon 11/107:15 pmICN - MCI
1 stop18h 52mAmerican Airlines
Deal found 11/1$916
This Fareboom deal was found by Cheapflights users on 11/1. 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 Fareboom is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 11/77:00 amMCI - ICN
1 stop20h 35mMultiple Airlines
Mon 11/109:30 pmICN - MCI
2 stops35h 06mMultiple Airlines
Deal found 11/1$931
This Kiwi.com deal was found by Cheapflights users on 10/30. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 11/2812:58 pmMCI - ICN
2 stops41h 37mMultiple Airlines
Thu 12/119:00 pmICN - MCI
1 stop17h 58mMultiple Airlines
Deal found 10/30$1,041

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 November 2, 2025.
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

Tue 1/13

2:50 pm-6:35 pm

1 stop36h 45m

Incheon Intl

Thu 1/22

8:35 pm-1:54 pm

1 stop32h 19m

$759

St. LouisIncheon

STL - ICN

STLICN

Lambert-St Louis

Mon 2/16

6:10 am-3:30 pm

1 stop18h 20m

Incheon Intl

Sun 3/1

6:00 pm-8:41 pm

1 stop17h 41m

$846

St. LouisIncheon

STL - ICN

STLICN

Lambert-St Louis

Tue 1/13

3:11 pm-5:40 am

2 stops23h 29m

Incheon Intl

Thu 1/22

6:00 pm-5:11 am

1 stop26h 11m

$846

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

$856

St. LouisIncheon

STL - ICN

STLICN

Lambert-St Louis

Thu 3/12

6:30 am-3:30 pm

1 stop19h 00m

Incheon Intl

Sun 3/22

7:40 pm-12:37 am

1 stop18h 57m

$866

Kansas CityIncheon

MCI - ICN

MCIICN

Kansas City

Thu 12/4

5:13 am-4:45 pm

1 stop20h 32m

Incheon Intl

Thu 12/11

7:15 pm-10:42 pm

1 stop18h 27m

$907

St. LouisIncheon

STL - ICN

STLICN

Lambert-St Louis

Fri 3/20

7:00 am-6:35 pm

1 stop21h 35m

Incheon Intl

Sun 3/29

8:35 pm-11:55 pm

1 stop17h 20m

$990

SpringfieldIncheon

SGF - ICN

SGFICN

Springfield-Branson

Thu 2/12

6:00 am-4:45 pm

1 stop19h 45m

Incheon Intl

Mon 2/16

6:50 pm-11:49 pm

1 stop19h 59m

$1,016

SpringfieldIncheon

SGF - ICN

SGFICN

Springfield-Branson

Sat 2/21

7:05 am-4:45 pm

2 stops42h 40m

Incheon Intl

Tue 2/24

6:50 pm-9:21 pm

1 stop17h 31m

$1,031

SpringfieldIncheon

SGF - ICN

SGFICN

Springfield-Branson

Thu 2/12

11:45 am-5:45 am

1 stop27h 00m

Incheon Intl

Mon 2/16

7:25 pm-9:41 pm

1 stop17h 16m

$1,064

Flights are sorted by cheapest round-trip flights first.

Deals found on 11/1

Showing 1-10 of 38 results
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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, April is the cheapest month in which you can book a flight from Missouri to Seoul (average of $727). Flying from Missouri to Seoul 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 SEL?

Find hourly flight availability from Missouri to Seoul. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated November 2, 2025.

When flying from Missouri to Seoul, the time of day you fly usually plays a role in the price. Save by searching for a flight in the afternoon, which can drop the price by up to 8% versus a flight in the evening.

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 18h 20m. Fly via Alaska Airlines, Delta, or United 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 cheapest airlines to fly from Missouri to Seoul one-way?

    For one-way options, check prices for American Airlines. According to our data, you can fly for as low as $464. Users have also found prices from $744 and $820 on Alaska Airlines and United Airlines, respectively.

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

    Most travelers choose Kansas City - Incheon Intl, Lambert-St Louis - Incheon Intl or Kansas City - 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 $727). Flying from Missouri to Seoul 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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Alternative routes for Missouri to Seoul

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 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 November 2, 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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