HomeSearch by dateVacation packagesHotelsFlight dealsCar rentalTravel tips & news
Incheon Intl

$489+ Cheap flights from St. Louis (STL) 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 2/16. Fares are subject to change and may not be available on all flights or dates of travel.
STL — ICN
Jan 22 — Jan 291
Wed 1/22
Wed 1/29
1 adult, Economy
We work with more than 300 partners to bring you better travel deals

Find cheap flights from St. Louis to Incheon Intl 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.

The best prices from Lambert-St Louis to Incheon Intl are usually found in January or November, booked 6 days in advance, depart on a Wednesday or Sunday and return on a Wednesday

Cheap flight deals from St. Louis to Incheon Intl

Discover tips and strategies to find the most affordable flight options for your journey from St. Louis (STL) to Incheon Intl (ICN). 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 17, 2025.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$799
(Air Canada)

One-way from

$489
(Kiwi.com)

Popular in

June

Cheapest in

January

Average price

$1,110
Provider with most accurate pricing for Lambert-St Louis-Incheon Intl flight deals.
Search Deals
Provider most trusted by Cheapflights users for Lambert-St Louis-Incheon Intl flights.
Search Deals
From Lambert-St Louis to Incheon Intl
Search Deals
One-way flight from Lambert-St Louis to Incheon Intl
Search Deals
High demand for flights, 19% potential price rise
Search Deals
Best time to find cheap flights, 5% potential price drop
Search Deals
Average for round-trip flights in January 2025
Search Deals

Find flight deals from St. Louis to Incheon Intl

Cheapest flights from St. Louis to Incheon Intl
Explore the most affordable flight options available from St. Louis to Incheon Intl. Find the lowest fares from popular airlines and budget airlines, with prices last updated on January 17, 2025.

This Air Canada 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 Air Canada is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 1/293:50 pmSTL - ICN
2 stops32h 25mAir Canada
Sun 2/28:10 pmICN - STL
1 stop33h 56mAir Canada
Deal found 1/15$799
This Delta deal was found by Cheapflights users on 1/14. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 1/196:00 amSTL - ICN
1 stop18h 30mDelta
Sun 1/267:30 pmICN - STL
1 stop18h 44mDelta
Deal found 1/14$877
This CheapOair 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 CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 9/11:30 pmSTL - ICN
1 stop36h 50mMultiple Airlines
Wed 10/110:35 amICN - STL
2 stops23h 22mMultiple Airlines
Deal found 1/15$889
This Kiwi.com 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 1/275:00 pmSTL - ICN
1 stop33h 45mKorean Air
Mon 2/39:35 amICN - STL
1 stop22h 02mKorean Air
Deal found 1/15$1,125
This oojo 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 oojo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 4/13:53 pmSTL - ICN
2 stops35h 42mQatar Airways
Mon 4/71:20 amICN - STL
2 stops53h 17mQatar Airways
Deal found 1/15$1,516
This American Airlines 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 9/15:36 amSTL - ICN
1 stop19h 54mAmerican Airlines
Wed 10/15:25 pmICN - STL
1 stop19h 02mAmerican Airlines
Deal found 1/15$1,535
This United Airlines 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 4/39:39 amSTL - ICN
2 stops28h 41mUnited Airlines
Tue 4/1511:30 amICN - STL
2 stops24h 20mUnited Airlines
Deal found 1/15$1,540
This Gurufare 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 Gurufare is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 8/86:10 pmSTL - ICN
2 stops51h 10mFinnair
Sat 8/239:50 pmICN - STL
2 stops34h 31mFinnair
Deal found 1/15$1,556
This Ovago 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 Ovago is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 6/105:40 pmSTL - ICN
2 stops35h 05mWestJet
Thu 6/128:45 pmICN - STL
2 stops35h 18mWestJet
Deal found 1/16$1,604
This Turkish 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 Turkish Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 3/75:33 pmSTL - ICN
2 stops57h 47mTurkish Airlines
Sat 3/1512:10 amICN - STL
2 stops52h 13mTurkish Airlines
Deal found 1/16$1,663
This Ovago 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 Ovago is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 9/66:00 pmSTL - ICN
1 stop20h 30mAsiana Airlines
Tue 9/308:55 pmICN - STL
1 stop17h 32mAsiana Airlines
Deal found 1/15$1,708

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

Customize your flight search to find flights from St. Louis 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 17, 2025.

Fly from

Any airport

Fly to

Any airport

Route

Depart

Return

Price

St. LouisIncheon

STL - ICN

STLICN

Lambert-St Louis

Thu 3/6

3:50 pm-6:25 pm

1 stop35h 35m

Incheon Intl

Thu 3/13

7:10 pm-3:06 pm

1 stop33h 56m

$799

St. LouisIncheon

STL - ICN

STLICN

Lambert-St Louis

Mon 1/27

7:00 am-5:55 pm

1 stop19h 55m

Incheon Intl

Fri 2/7

6:15 pm-11:59 pm

1 stop20h 44m

$1,197

St. LouisIncheon

STL - ICN

STLICN

Lambert-St Louis

Tue 6/10

5:40 pm-6:45 pm

2 stops35h 05m

Incheon Intl

Thu 6/12

8:45 pm-6:03 pm

2 stops35h 18m

$1,604

St. LouisIncheon

STL - ICN

STLICN

Lambert-St Louis

Fri 3/7

5:33 pm-6:20 pm

2 stops57h 47m

Incheon Intl

Sat 3/15

12:10 am-2:23 pm

2 stops52h 13m

$1,663

St. LouisIncheon

STL - ICN

STLICN

Lambert-St Louis

Tue 4/8

4:45 pm-4:20 am

2 stops21h 35m

Incheon Intl

Mon 4/14

4:50 pm-2:42 pm

3 stops35h 52m

$1,670

St. LouisIncheon

STL - ICN

STLICN

Lambert-St Louis

Thu 4/24

6:30 am-5:35 pm

2 stops45h 05m

Incheon Intl

Fri 5/30

1:20 am-11:56 pm

2 stops36h 36m

$1,738

St. LouisIncheon

STL - ICN

STLICN

Lambert-St Louis

Mon 5/12

7:28 am-3:30 pm

1 stop18h 02m

Incheon Intl

Wed 7/23

5:25 pm-8:46 am

1 stop29h 21m

$1,784

St. LouisIncheon

STL - ICN

STLICN

Lambert-St Louis

Fri 4/11

11:19 am-5:20 pm

1 stop16h 01m

Incheon Intl

Sun 4/13

6:40 pm-11:04 pm

1 stop18h 24m

$1,865

St. LouisIncheon

STL - ICN

STLICN

Lambert-St Louis

Fri 1/31

6:00 am-3:30 pm

1 stop18h 30m

Incheon Intl

Thu 2/13

7:30 pm-10:17 pm

1 stop17h 47m

$1,909

St. LouisIncheon

STL - ICN

STLICN

Lambert-St Louis

Fri 5/30

6:23 pm-11:20 am

2 stops26h 57m

Incheon Intl

Sat 6/14

9:50 pm-6:25 pm

2 stops34h 35m

$1,955

Flights are sorted by cheapest round-trip flights first.

Deals found on 1/15

Showing 1-10 of 13 results
1
2

Compare providers for flights from St. Louis to Incheon Intl

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 St. Louis to Incheon Intl in January.
ProviderPrice AccuracyTrust Score*
ExpediaPrice Accuracy1 starTrust Score*3 stars
eDreamsPrice Accuracy3 starsTrust Score*3 stars
FlightHubPrice Accuracy3 starsTrust Score*3 stars
AranGrantPrice 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 St. Louis-Incheon Intl Airport flights, users find the pricing of FlightHub to be most consistent on Cheapflights vs. FlightHub Users can find the same prices on St. Louis-Incheon Intl Airport flight deals on Cheapflights vs. FlightHub >95% of the time. Price accuracy is based on data collected from St. Louis-Incheon Intl Airport flight searches over the past month and is updated monthly.
  • Most trusted provider: When it comes to deals on St. Louis-Incheon Intl Airport 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 St. Louis-Incheon Intl Airport 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 St. Louis to Incheon Intl

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

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

How far ahead should I book a flight from St. Louis to Incheon Intl Airport?

Use this chart to determine the optimal time to book a round-trip flight from St. Louis to Incheon Intl. Price data was last updated on January 10, 2025.

Booking 5 days in advance of your planned departure date is, on average, the best time to get cheap flights from St. Louis to Incheon Intl Airport. The general trend is that the closer you book to the departure date, the more expensive your flight will be.

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

Currently, October is the cheapest month in which you can book a flight from St. Louis to Incheon Intl Airport (average of $1,086). Flying from St. Louis to Incheon Intl Airport in June is currently the most expensive (average of $1,723). 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 STL to ICN?

Find hourly flight availability from St. Louis to Incheon Intl. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated January 17, 2025.

A simple way to save on the total cost of your ticket is to fly from St. Louis to Incheon Intl Airport in the afternoon. If you’re flexible enough to do this you can expect to save up to 14% on your trip compared to booking a flight at noon.

Rainfall in Incheon Intl by month

Plan your trip to Incheon Intl by taking into account the average rainfall totals by month.

In terms of precipitation, rainfall in Incheon Intl Airport ranges from 0.8 - 10.2 inches per month. July is typically the wettest month, when rainfall can reach 10.2 in. January is typically the driest time to visit Incheon Intl Airport when rainfall is around 0.8 in.

Temperature in Incheon Intl by month

Plan your trip to Incheon Intl by taking into account the average temperature totals by month.

If weather is an important factor for your trip to Incheon Intl Airport, use this chart to help with planning. For those seeking warmer temperatures, August is the ideal time of year to visit, when temperatures reach an average of 77.0 F. Travelers looking to avoid the cold should look outside of January, when temperatures are typically at their lowest (around 28.4 F).

Reviews of airlines servicing Incheon Intl

Get insights into the airlines that provide service to Incheon Intl. 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 Incheon Intl. Reviews last updated January 17, 2025.
Read reviews from past customers who have flown Air Canada, Korean Air and United Airlines from St. Louis to Seoul. In addition to providing an overall rating, users have also rated airlines in terms of entertainment options, comfort, food, crew/service, and boarding process.
Korean Air
8.5
Very good
1,034 reviews

Boarding

8.5

Food

8.1

Overall

8.5

Entertainment

8.2

Comfort

8.3

Crew

8.7

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

Food

8.1

Overall

8.5

Entertainment

8.2

Comfort

8.3

Crew

8.7

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

Food

8.1

Overall

8.5

Entertainment

8.2

Comfort

8.3

Crew

8.7

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.

Finnair
7.6
Good
1,285 reviews
Korean Air
8.5
Very good
1,034 reviews

Boarding

8.5

Food

8.1

Overall

8.5

Entertainment

8.2

Comfort

8.3

Crew

8.7

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

Food

8.1

Overall

8.5

Entertainment

8.2

Comfort

8.3

Crew

8.7

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
8,965 reviews
Korean Air
8.5
Very good
1,034 reviews

Boarding

8.5

Food

8.1

Overall

8.5

Entertainment

8.2

Comfort

8.3

Crew

8.7

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 St. Louis to Incheon Intl. 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 from for flights from St. Louis to Incheon Intl?

    For a flight from St. Louis to Incheon Intl, you will be flying from Lambert-St Louis. Lambert-St Louis (STL) is just 12.7 mi from the center of the city. Lambert-St Louis is the only St. Louis airport and it handles 0 outbound flights to Incheon Intl per day. 5 airlines have flights to Incheon Intl from Lambert-St Louis on a regular basis.

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

    Air Canada, at $799, was found to be the cheapest airline from St. Louis to Incheon Intl Airport.Alternate airlines to your destination round-trip include Delta and Korean Air. Users have found that Air Canada is 49% cheaper than the other options available to this destination.

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

    $716 is the cheapest one-way deal found within the past few days, from Air Canada. You may also be able to find cheap deals on WestJet and American Airlines, with prices starting from $826 and $937, respectively.

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

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

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

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

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

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

    Currently, October is the cheapest month in which you can book a flight from St. Louis to Incheon Intl Airport (average of $1,086). Flying from St. Louis to Incheon Intl Airport in June is currently the most expensive (average of $1,723). 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 St. Louis?

Book flights to St. Louis if you plan to visit one of these locations
Seongnam
Suwon
Daejeon

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 St. Louis to Incheon Intl

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

Top 5 airlines flying from St. Louis to Incheon Intl

Discover the top 5 airlines that operate flights from St. Louis 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 17, 2025.
AirlineCheapestAverageFlexibilityOn-time
Air CanadaCheapest$870Average$1,236FlexibilityNo cancel feeOn-time67%
DeltaCheapest$902Average$1,615FlexibilityNo cancel feeOn-timeN/A
United AirlinesCheapest$902Average$1,112FlexibilityNo cancel feeOn-time69%
American AirlinesCheapest$1,001Average$1,482FlexibilityNo cancel feeOn-time71%
Korean AirCheapest$1,080Average$1,875FlexibilityNo 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.