HomeSearch by dateVacation packagesHotelsFlight dealsCar rentalTravel tips & news
St. Louis

$441+ Cheap flights from Incheon Intl (ICN) to St. Louis (STL)

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 2/8. Fares are subject to change and may not be available on all flights or dates of travel.
ICN — STL
Jan 21 — Jan 281
Tue 1/21
Tue 1/28
1 adult, Economy
We work with more than 300 partners to bring you better travel deals

Find cheap flights from Incheon Intl to St. Louis 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 Incheon Intl to St. Louis

Discover tips and strategies to find the most affordable flight options for your journey from Incheon Intl (ICN) to St. Louis (STL). Learn about various techniques such as flexible date searches, comparing prices across and setting up price alerts. Use these methods to find the cheapest flights available for your travel needs. Data last updated January 16, 2025.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$823
(United Airlines)

One-way from

$441
(Kiwi.com)

Popular in

August

Cheapest in

April

Average price

$1,504
Provider with most accurate pricing for Incheon Intl-Lambert-St Louis flight deals.
Search Deals
Provider most trusted by Cheapflights users for Incheon Intl-Lambert-St Louis flights.
Search Deals
From Incheon Intl to Lambert-St Louis
Search Deals
One-way flight from Incheon Intl to Lambert-St Louis
Search Deals
High demand for flights, 19% potential price rise
Search Deals
Best time to find cheap flights, 4% potential price drop
Search Deals
Average for round-trip flights in January 2025
Search Deals

Find flight deals from Incheon Intl to St. Louis

Cheapest flights from Incheon Intl to St. Louis
Explore the most affordable flight options available from Incheon Intl to St. Louis. Find the lowest fares from popular airlines and budget airlines, with prices last updated on January 16, 2025.

This United Airlines deal was found by Cheapflights users on 1/16. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 1/276:00 pmICN - STL
2 stops19h 20mUnited Airlines
Thu 1/307:00 amSTL - ICN
1 stop31h 40mUnited Airlines
Deal found 1/16$823
This Gotogate deal was found by Cheapflights users on 1/15. 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 Gotogate is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 5/77:05 pmICN - STL
1 stop38h 38mAir Canada
Thu 5/159:15 amSTL - ICN
1 stop18h 15mAir Canada
Deal found 1/15$954
This Korean Air deal was found by Cheapflights users on 1/16. 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 Korean Air is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 2/27:30 pmICN - STL
1 stop18h 44mKorean Air
Wed 2/56:43 amSTL - ICN
1 stop18h 47mKorean Air
Deal found 1/16$1,085
This Tourvis deal was found by Cheapflights users on 1/16. 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 Tourvis is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 1/276:15 pmICN - STL
1 stop34h 38mMultiple Airlines
Thu 1/302:49 pmSTL - ICN
1 stop36h 01mMultiple Airlines
Deal found 1/16$1,232
This Qatar Airways deal was found by Cheapflights users on 1/16. 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 Qatar Airways is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 2/112:20 amICN - STL
2 stops36h 49mQatar Airways
Wed 2/512:00 pmSTL - ICN
2 stops31h 00mQatar Airways
Deal found 1/16$1,603

Find flights from Incheon Intl to St. Louis within your budget

Customize your flight search to find flights from Incheon Intl to St. Louis 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 16, 2025.

Fly from

Any airport

Fly to

Any airport

Route

Depart

Return

Price

IncheonSt. Louis

ICN - STL

ICNSTL

Incheon Intl

Mon 1/27

6:00 pm-10:20 pm

2 stops19h 20m

Lambert-St Louis

Thu 1/30

7:00 am-5:40 am

1 stop31h 40m

$823

IncheonSt. Louis

ICN - STL

ICNSTL

Incheon Intl

Wed 5/7

7:05 pm-7:43 pm

1 stop38h 38m

Lambert-St Louis

Thu 5/15

9:15 am-5:30 pm

1 stop18h 15m

$954

IncheonSt. Louis

ICN - STL

ICNSTL

Incheon Intl

Sun 2/2

7:30 pm-11:14 pm

1 stop18h 44m

Lambert-St Louis

Wed 2/5

6:43 am-4:30 pm

1 stop18h 47m

$1,085

IncheonSt. Louis

ICN - STL

ICNSTL

Incheon Intl

Mon 1/27

6:15 pm-1:53 pm

1 stop34h 38m

Lambert-St Louis

Thu 1/30

2:49 pm-5:50 pm

1 stop36h 01m

$1,232

IncheonSt. Louis

ICN - STL

ICNSTL

Incheon Intl

Sat 2/1

12:20 am-10:09 pm

2 stops36h 49m

Lambert-St Louis

Wed 2/5

12:00 pm-10:00 am

2 stops31h 00m

$1,603

IncheonSt. Louis

ICN - STL

ICNSTL

Incheon Intl

Sat 2/8

3:20 pm-9:16 am

3 stops56h 56m

$441

IncheonSt. Louis

ICN - STL

ICNSTL

Incheon Intl

Thu 2/27

12:45 pm-6:56 pm

1 stop21h 11m

$502

IncheonSt. Louis

ICN - STL

ICNSTL

Incheon Intl

Sat 2/8

6:50 pm-10:56 pm

1 stop19h 06m

$573

IncheonSt. Louis

ICN - STL

ICNSTL

Incheon Intl

Fri 4/4

4:40 pm-12:43 am

2 stops22h 03m

$644

IncheonSt. Louis

ICN - STL

ICNSTL

Incheon Intl

Sun 4/13

7:05 pm-2:59 pm

1 stop33h 54m

$660

Flights are sorted by cheapest round-trip flights first.

Deals found on 1/15

Showing 1-10 of 11 results
1
2

Compare providers for flights from Incheon Intl to St. Louis

Provider information is updated monthly. Please note that these providers often have deals for this flight, but the availability may vary on a day-by-day basis on Cheapflights.
Use the table below to compare price accuracy, trust ratings, and cancellation policies for each provider offering flight deals from Incheon Intl to St. Louis in January.
ProviderPrice AccuracyTrust Score*
eDreamsPrice Accuracy3 starsTrust Score*3 stars
FlightHubPrice Accuracy3 starsTrust Score*3 stars

*The Trust Score is based on feedback from users after their booking experience. It measures overall satisfaction, helping us identify issues like hidden fees, problems during the ticketing process, and the quality of customer service. This score is our best indicator of the provider's quality and reliability.

  • Most accurate provider: When it comes to deals on Incheon Intl Airport-St. Louis flights, users find the pricing of FlightHub to be most consistent on Cheapflights vs. FlightHub Users can find the same prices on Incheon Intl Airport-St. Louis flight deals on Cheapflights vs. FlightHub >95% of the time. Price accuracy is based on data collected from Incheon Intl Airport-St. Louis flight searches over the past month and is updated monthly.
  • Most trusted provider: When it comes to deals on Incheon Intl Airport-St. Louis flights, Cheapflights users trust FlightHub the most. FlightHub has received a user feedback score of 3 out of 3 stars (3 being the best), meaning they have been trusted the most by Cheapflights users looking for Incheon Intl Airport-St. Louis flight deals. Provider user feedback score is based on Cheapflights searches over the past month and is updated monthly.

Best time to book a flight from Incheon Intl to St. Louis

Have a flexible travel schedule? Discover the best time to fly to St. Louis from Incheon Intl 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.

Travel insights for flights from Incheon Intl to St. Louis

Get recent, data-driven insights about flights from Incheon Intl to St. Louis including ideal travel times, pricing trends, and more.

What is the cheapest month to book a flight from Incheon Intl Airport to St. Louis?

Currently, August is the cheapest month in which you can book a flight from Incheon Intl Airport to St. Louis (average of $311). Flying from Incheon Intl Airport to St. Louis in March is currently the most expensive (average of $356). 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.

Rainfall in St. Louis by month

Plan your trip to St. Louis by taking into account the average rainfall totals by month.

In terms of precipitation, rainfall in St. Louis ranges from 2.2 - 4.7 inches per month. May is typically the wettest month, when rainfall can reach 4.7 in. February is typically the driest time to visit St. Louis when rainfall is around 2.2 in.

Temperature in St. Louis by month

Plan your trip to St. Louis by taking into account the average temperature totals by month.

If weather is an important factor for your trip to St. Louis, use this chart to help with planning. For those seeking warmer temperatures, July is the ideal time of year to visit, when temperatures reach an average of 80.6 F. Travelers looking to avoid the cold should look outside of January, when temperatures are typically at their lowest (around 32.0 F).

Reviews of airlines servicing St. Louis

Get insights into the airlines that provide service to St. Louis. Read reviews, discover amenities, and learn about the overall travel experience offered by airlines. Use this information to make informed decisions when choosing an airline for your flight to St. Louis. Reviews last updated January 16, 2025.
Read through reviews of airlines operating flights from Seoul to St. Louis, such as Korean Air, Qatar Airways and United Airlines. Reviews also offer insight into each airline's entertainment options, comfort, food, crew/service, and boarding process.
Korean Air
8.5
Very good
1,034 reviews

Boarding

8.5

Crew

8.7

Overall

8.5

Comfort

8.3

Entertainment

8.2

Food

8.1

Reviews

1 / 10

Flight was short, so we did not get food, but that is expected. Only have entertainment a fair rating because no wifi is provided onboard. Good flight overall.

Korean Air
8.5
Very good
1,034 reviews
Korean Air
8.5
Very good
1,034 reviews

Boarding

8.5

Crew

8.7

Overall

8.5

Comfort

8.3

Entertainment

8.2

Food

8.1

Reviews

1 / 10

Flight was short, so we did not get food, but that is expected. Only have entertainment a fair rating because no wifi is provided onboard. Good flight overall.

Delta
8.0
Very good
8,511 reviews
Korean Air
8.5
Very good
1,034 reviews

Boarding

8.5

Crew

8.7

Overall

8.5

Comfort

8.3

Entertainment

8.2

Food

8.1

Reviews

1 / 10

Flight was short, so we did not get food, but that is expected. Only have entertainment a fair rating because no wifi is provided onboard. Good flight overall.

Qatar Airways
7.5
Good
3,752 reviews
Korean Air
8.5
Very good
1,034 reviews

Boarding

8.5

Crew

8.7

Overall

8.5

Comfort

8.3

Entertainment

8.2

Food

8.1

Reviews

1 / 10

Flight was short, so we did not get food, but that is expected. Only have entertainment a fair rating because no wifi is provided onboard. Good flight overall.

United Airlines
7.4
Good
8,964 reviews
Korean Air
8.5
Very good
1,034 reviews

Boarding

8.5

Crew

8.7

Overall

8.5

Comfort

8.3

Entertainment

8.2

Food

8.1

Reviews

1 / 10

Flight was short, so we did not get food, but that is expected. Only have entertainment a fair rating because no wifi is provided onboard. Good flight overall.

American Airlines
7.2
Good
10,000 reviews
Korean Air
8.5
Very good
1,034 reviews

Boarding

8.5

Crew

8.7

Overall

8.5

Comfort

8.3

Entertainment

8.2

Food

8.1

Reviews

1 / 10

Flight was short, so we did not get food, but that is expected. Only have entertainment a fair rating because no wifi is provided onboard. Good flight overall.

Related info for your journey

Find useful and relevant information for your journey from Incheon Intl to St. Louis. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.

  • What airport do you fly into for flights to St. Louis from Incheon Intl?

    Most people fly into Lambert-St Louis (STL) if they book a flight to St. Louis from Incheon Intl. On average, Lambert-St Louis has 0 inbound flights from Incheon Intl per day from 2 airlines. Lambert-St Louis is conveniently located just 12.7 mi from St. Louis’s city center.

  • What are the cheapest airlines flying from Incheon Intl Airport to St. Louis round-trip?

    Flying on United Airlines is currently your cheapest option to St. Louis, with prices starting at $823. Additional round-trip tickets that might be worth considering are offered by Air Canada and Korean Air, with the lowest prices starting at $954 and $1,085, respectively. These flights start at 39% lower than the current average price 3 months from now.

  • What are the cheapest airlines to fly from Incheon Intl Airport to St. Louis one-way?

    The cheapest airline one-way is United Airlines, with whom users have recently found tickets for as low as $502. However, be on the lookout for offers from American Airlines and Delta, as they are both options that can get you from Incheon Intl Airport to St. Louis for a low price.

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

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

  • How can I find direct flights from Incheon Intl to St. Louis?

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

  • Can I find deals for business class flights from Incheon Intl to St. Louis?

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

    Currently, August is the cheapest month in which you can book a flight from Incheon Intl Airport to St. Louis (average of $311). Flying from Incheon Intl Airport to St. Louis in March is currently the most expensive (average of $356). 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
Fenton
Fairview Heights
Maryland Heights
Collinsville
Wentzville
Eureka
St. Peters
Festus
Alton
Farmington
Chesterfield

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.

Alternative routes for Incheon Intl to St. Louis

See prices for flight routes from nearby airports that may be better suited for you.
Incheon Intl to Kansas City flights
Gimpo Intl to Kansas City flights
Gimpo Intl to St. Louis flights
Incheon Intl to Springfield flights

Top 2 airlines flying from Incheon Intl to St. Louis

Discover the top 2 airlines that operate flights from Incheon Intl to St. Louis. 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 16, 2025.
AirlineCheapestAverageFlexibilityOn-time
DeltaCheapest$941Average$1,464FlexibilityNo cancel feeOn-timeN/A
Korean AirCheapest$1,362Average$1,482FlexibilityNo cancel feeOn-time81%
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.