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Incheon Intl

$379+ Cheap flights from Missouri to Incheon Intl (ICN)

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
Feb 27 — Mar 61
Fri 2/27
Fri 3/6
1 adult, Economy
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Cheap flight deals from Missouri to Incheon Intl

Cheapest flights from Missouri to Incheon Intl
Explore the most affordable flight options available from Missouri to Incheon Intl. Find the lowest fares from popular airlines and budget airlines, with prices last updated on January 28, 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 Expedia deal was found by Cheapflights users on 1/26. 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.
Thu 1/292:50 pm
STL
-
ICN
1 stop36h 45m
Multiple Airlines
Sat 1/318:35 pm
ICN
-
STL
1 stop32h 19m
Multiple Airlines
Deal found 1/26$780
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 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.
Sat 9/56:41 am
STL
-
ICN
1 stop20h 49m
Alaska Airlines
Mon 9/147:35 pm
ICN
-
STL
1 stop18h 24m
Alaska Airlines
Deal found 1/27$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 5/124:50 pm
ICN
-
STL
2 stops20h 09m
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
Thu 5/144:50 pm
ICN
-
STL
1 stop26h 57m
United Airlines
Deal found 1/27$854
This American Airlines deal was found by Cheapflights users on 1/26. 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 2/26:00 am
STL
-
ICN
1 stop19h 45m
American Airlines
Thu 2/127:15 pm
ICN
-
STL
1 stop18h 43m
American Airlines
Deal found 1/26$857
This United Airlines deal was found by Cheapflights users on 1/26. 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.
Thu 4/168:30 am
STL
-
ICN
1 stop29h 50m
United Airlines
Wed 4/2211:30 am
ICN
-
STL
2 stops23h 24m
United Airlines
Deal found 1/26$858
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
Sat 5/94:50 pm
ICN
-
STL
2 stops31h 58m
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

Find flight deals from Missouri to Incheon Intl

Keep the following information in mind while searching for Missouri to Incheon Intl flight deals. Data was last updated January 28, 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 Incheon Intl
Search Deals
One-way flight from Missouri to Incheon Intl
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 Incheon Intl 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 28, 2026.
Use the filters below to find and compare flights from Missouri to Incheon Intl Airport that are best for you.

Fly from

Missouri

Fly to

Incheon Intl

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

Sat 4/25

7:05 pm-4:20 am

1 stop19h 15m

Incheon Intl

Wed 5/6

11:30 am-10:30 pm

2 stops25h 00m

$851

St. LouisIncheon

STL - ICN

STLICN

Lambert-St Louis

Tue 5/5

4:06 pm-4:20 am

2 stops22h 14m

Incheon Intl

Thu 5/14

4:50 pm-5:47 am

1 stop26h 57m

$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-5:47 am

1 stop26h 57m

$851

St. LouisIncheon

STL - ICN

STLICN

Lambert-St Louis

Thu 4/16

8:54 am-4:20 am

2 stops29h 26m

Incheon Intl

Wed 4/22

11:30 am-8:54 pm

2 stops23h 24m

$851

St. LouisIncheon

STL - ICN

STLICN

Lambert-St Louis

Mon 5/4

5:59 pm-4:20 am

2 stops20h 21m

Incheon Intl

Tue 5/12

4:50 pm-10:59 pm

2 stops20h 09m

$851

St. LouisIncheon

STL - ICN

STLICN

Lambert-St Louis

Mon 2/16

9:55 am-5:40 am

2 stops28h 45m

Incheon Intl

Fri 2/20

6:00 pm-8:26 pm

2 stops17h 26m

$851

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-6:37 pm

1 stop20h 52m

$921

Flights are sorted by cheapest round-trip flights first.

Deals found on 1/26

Showing 1-10 of 36 results
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Best time to book a flight from Missouri to Incheon Intl

Have a flexible travel schedule? Discover the best time to fly to Incheon Intl 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 Incheon Intl Airport

What is the cheapest month to book a flight from Missouri to Incheon Intl Airport?

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

How much does it cost to fly round-trip from Missouri to Incheon Intl Airport?

Related info for your journey

Find useful and relevant information for your journey from Missouri to Incheon Intl. 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 Incheon Intl Airport?

    Departing from Missouri to Incheon Intl Airport will take you 19h 15m. There are 6670 mi between Missouri and Incheon Intl Airport. Both multi-stop and nonstop flights can be found to your destination and back.

  • What are the most popular routes from Missouri to Incheon Intl Airport?

    While some choose either Kansas City - Incheon Intl or Springfield-Branson - Incheon Intl, Lambert-St Louis - Incheon Intl is the most popular route from Missouri to Incheon Intl Airport.

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

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

  • How can I find direct flights from Missouri to Incheon Intl?

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

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

    Yes. Cheapflights offers flight deals from Missouri to Incheon Intl 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 Incheon Intl Airport?

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

Traveling to a place near Incheon Intl Airport?

Book flights to Incheon Intl Airport if you plan to visit one of these locations
Suwon
Seongnam

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Alternative routes for Missouri to Incheon Intl

See prices for flight routes from nearby airports that may be better suited for you.
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Dulles Intl to Gimpo Intl flights
Baltimore to Incheon Intl flights
Minneapolis to Incheon Intl flights
George Bush Intcntl to Incheon Intl flights
O'Hare Intl to Gimpo Intl flights
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Portland to Incheon Intl flights
Salt Lake City to Incheon Intl flights
Baltimore to Gimpo Intl flights
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Austin to Incheon Intl flights
Detroit to Incheon Intl flights
Philadelphia to Incheon Intl flights
Reagan-National to Gimpo Intl flights
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George Bush Intcntl to Gimpo Intl flights
Atlanta to Gimpo Intl flights
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Boston to Gimpo Intl flights
Raleigh to Incheon Intl flights
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Honolulu to Gimpo Intl flights
Miami to Incheon Intl flights
Austin to Gimpo Intl flights

Top 5 airlines flying from Missouri to Incheon Intl

Discover the top 5 airlines that operate flights from Missouri to Incheon Intl. 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 28, 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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