HomeSearch by dateVacation packagesHotelsFlight dealsCar rentalTravel tips & news
Seoul

$586+ 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 10/31. Fares are subject to change and may not be available on all flights or dates of travel.
STL — SEL
Jun 16 — Jun 231
Tue 6/16
Tue 6/23
1 adult, Economy
We work with more than 300 partners to bring you better travel deals

Find cheap flights from Missouri to Seoul with Cheapflights

1. Tell us where you want to go

Enter your travel information like dates, passengers, trip type (one-way or round trip), and preferred cabin class then click “Find deals”

2. Select your favorite providers

We find the providers serving your travel needs. Choose up to four travel providers to compare side-by-side for flights, hotels, or car rentals.

3. Compare prices and book

Review each provider’s pricing and select the best option for you! Book through your favorite provider’s website for a seamless experience.

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 May 17, 2026.

This Cathay Pacific deal was found by Cheapflights users on 5/16. 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 Cathay Pacific is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 9/510:40 am
SGF
-
ICN
2 stops36h 00m
Multiple Airlines
Sun 9/131:40 pm
ICN
-
SGF
2 stops46h 31m
Multiple Airlines
Deal found 5/16$1,233
This Qatar Airways deal was found by Cheapflights users on 5/13. 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 Qatar Airways is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 8/47:58 pm
MCI
-
ICN
2 stops48h 32m
Qatar Airways
Thu 8/201:20 am
ICN
-
MCI
2 stops36h 39m
Qatar Airways
Deal found 5/13$1,243
This Cathay Pacific deal was found by Cheapflights users on 5/16. 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 Cathay Pacific is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 8/46:37 am
STL
-
ICN
2 stops27h 48m
Multiple Airlines
Thu 8/208:00 am
ICN
-
STL
2 stops28h 25m
Multiple Airlines
Deal found 5/16$1,258
This Air Canada deal was found by Cheapflights users on 5/16. 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 8/42:40 pm
STL
-
ICN
1 stop36h 50m
Air Canada
Thu 8/207:05 pm
ICN
-
STL
1 stop32h 57m
Air Canada
Deal found 5/16$1,260
This Justfly.com deal was found by Cheapflights users on 5/13. 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.
Wed 8/512:10 pm
STL
-
ICN
1 stop38h 15m
Air Canada
Thu 8/205:45 pm
ICN
-
STL
2 stops38h 57m
Air Canada
Deal found 5/13$1,261
This FlightHub deal was found by Cheapflights users on 5/16. 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 8/42:40 pm
STL
-
ICN
1 stop36h 50m
Air Canada
Wed 8/195:45 pm
ICN
-
STL
2 stops38h 57m
Air Canada
Deal found 5/16$1,265
This Cathay Pacific deal was found by Cheapflights users on 5/16. 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 Cathay Pacific is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 10/136:51 pm
STL
-
ICN
2 stops29h 14m
Multiple Airlines
Wed 1/133:00 pm
ICN
-
STL
2 stops23h 59m
Multiple Airlines
Deal found 5/16$1,268
This Cathay Pacific deal was found by Cheapflights users on 5/12. 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 Cathay Pacific is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 8/196:00 am
STL
-
ICN
2 stops26h 25m
Multiple Airlines
Thu 12/1710:00 am
ICN
-
STL
2 stops27h 56m
Multiple Airlines
Deal found 5/12$1,269
This BusinessClass deal was found by Cheapflights users on 5/13. 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 BusinessClass is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 9/26:43 pm
SGF
-
ICN
2 stops27h 57m
Cathay Pacific
Sat 9/128:00 am
ICN
-
SGF
2 stops28h 11m
Cathay Pacific
Deal found 5/13$1,271
This Air Canada deal was found by Cheapflights users on 5/14. 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 8/42:40 pm
STL
-
ICN
1 stop36h 50m
Air Canada
Wed 8/127:05 pm
ICN
-
STL
1 stop39h 02m
Air Canada
Deal found 5/14$1,273
This Cathay Pacific deal was found by Cheapflights users on 5/16. 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 Cathay Pacific is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 9/1910:55 am
SGF
-
ICN
2 stops35h 45m
Multiple Airlines
Fri 10/23:10 pm
ICN
-
SGF
2 stops43h 15m
Multiple Airlines
Deal found 5/16$1,283
This Qatar Airways deal was found by Cheapflights users on 5/13. 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 Qatar Airways is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 8/77:58 pm
MCI
-
ICN
2 stops55h 07m
Qatar Airways
Thu 8/201:20 am
ICN
-
MCI
2 stops36h 39m
Qatar Airways
Deal found 5/13$1,284

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 May 17, 2026.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$1,233
(Cathay Pacific)

One-way from

$586
(Kiwi.com)

Popular in

July

Cheapest in

February

Average price

$1,011
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. 23% potential increase in price ($331 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 5% potential price decrease ($54 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in May 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 May 17, 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

Wed 8/19

6:00 am-10:25 pm

2 stops26h 25m

Incheon Intl

Thu 12/17

10:00 am-10:56 pm

2 stops27h 56m

$1,269

SpringfieldIncheon

SGF - ICN

SGFICN

Springfield-Branson

Sun 10/18

7:48 pm-12:25 am

2 stops38h 37m

Incheon Intl

Sun 10/25

10:00 am-6:25 pm

2 stops46h 25m

$1,318

SpringfieldIncheon

SGF - ICN

SGFICN

Springfield-Branson

Sat 9/5

7:15 am-2:05 pm

2 stops40h 50m

Incheon Intl

Sun 9/13

1:40 pm-10:11 pm

2 stops46h 31m

$1,319

St. LouisIncheon

STL - ICN

STLICN

Lambert-St Louis

Tue 7/28

5:13 pm-12:40 pm

2 stops29h 27m

Incheon Intl

Tue 8/18

8:00 am-11:42 pm

2 stops29h 42m

$1,343

St. LouisIncheon

STL - ICN

STLICN

Lambert-St Louis

Fri 10/16

6:51 pm-2:05 pm

2 stops29h 14m

Incheon Intl

Sat 10/24

1:55 am-11:05 pm

2 stops35h 10m

$1,369

St. LouisIncheon

STL - ICN

STLICN

Lambert-St Louis

Thu 10/29

9:47 am-6:35 pm

2 stops42h 48m

Incheon Intl

Sat 11/7

7:35 pm-11:42 pm

2 stops43h 07m

$1,379

St. LouisIncheon

STL - ICN

STLICN

Lambert-St Louis

Thu 11/5

7:00 am-5:35 pm

1 stop19h 35m

Incheon Intl

Mon 11/9

8:00 pm-11:56 pm

1 stop18h 56m

$1,420

St. LouisIncheon

STL - ICN

STLICN

Lambert-St Louis

Mon 8/3

5:23 pm-4:00 am

1 stop20h 37m

Incheon Intl

Mon 8/24

6:50 pm-8:08 am

1 stop27h 18m

$1,421

St. LouisIncheon

STL - ICN

STLICN

Lambert-St Louis

Tue 8/4

12:52 pm-4:00 am

1 stop25h 08m

Incheon Intl

Mon 8/24

7:00 pm-8:37 am

2 stops27h 37m

$1,425

St. LouisIncheon

STL - ICN

STLICN

Lambert-St Louis

Thu 8/6

6:20 am-4:50 pm

2 stops20h 30m

Incheon Intl

Mon 8/24

7:00 pm-10:23 am

2 stops29h 23m

$1,425

Flights are sorted by cheapest round-trip flights first.

Deals found on 5/15

Showing 1-10 of 59 resultsSorted by cheapest first
1
2
3
...
6

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, October is the cheapest month in which you can book a flight from Missouri to Seoul (average of $522). Flying from Missouri to Seoul in July is currently the most expensive (average of $1,111). 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 21h 44m. Fly via Delta, United Airlines, or Japan Airlines to get the fastest option. There are 6654 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 Kansas City - Incheon Intl, Lambert-St Louis - 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, October is the cheapest month in which you can book a flight from Missouri to Seoul (average of $522). Flying from Missouri to Seoul in July is currently the most expensive (average of $1,111). 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

Toggle through the tabs below to find thousands of options on Cheapflights for your next trip.

Top 3 airlines flying from Missouri to Seoul

Discover the top 3 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 May 17, 2026.
AirlineCheapestAverageFlexibilityOn-time
American AirlinesCheapest$832Average$1,518FlexibilityNo cancel feeOn-time71%
DeltaCheapest$846Average$1,183FlexibilityNo cancel feeOn-timeN/A
United AirlinesCheapest$865Average$1,333FlexibilityNo cancel feeOn-time69%

100% Free

Cheapflights is completely free to use, so you can start saving the moment you arrive.

Book with Flexibility

Our users can plan ahead with confidence and find flights with no change fees

Travel Smart

Millions of people come to us for their flight needs every year. We help make travel planning easy by providing useful insights and data-driven graphs that can inform your decisions.