฿28,490 Cheap Flights from Seoul (ICN) to St. Louis (STL)

View ฿28,490 flight on Thu, 11 Jun 2026Opens in a new window

Popular airlines from Incheon Intl. Airport (ICN) to Lambert-St. Louis International Airport (STL)

  • Be in the know

    Get alerts if flight prices drop or rise*

  • Book smarter

    Save up to 40% on select hotels after you book a flight*

  • Earn twice

    Earn your airline miles on top of our rewards
    Sign in

Cheap Flights from Seoul (ICN) to St. Louis (STL)

Prices were available within the past 7 days and start at ฿28,490 for one-way flights and ฿44,150 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

Delta
Thu, 11 Jun - Mon, 15 Jun
ICN
Seoul
STL
St. Louis
฿44,150 Return, found 2 days ago
฿44,150
Return
found 2 days ago
Select Delta flight, departing Thu, 11 Jun from Seoul to St. Louis, returning Mon, 15 Jun, priced at ฿44,150 found 2 days ago
Delta
Thu, 11 Jun - Mon, 15 Jun
ICN
Seoul
STL
St. Louis
฿49,540 Return, found 2 days ago
฿49,540
Return
found 2 days ago
Select Delta flight, departing Thu, 11 Jun from Seoul to St. Louis, returning Mon, 15 Jun, priced at ฿49,540 found 2 days ago
Delta
Thu, 11 Jun - Mon, 15 Jun
ICN
Seoul
STL
St. Louis
฿49,810 Return, found 2 days ago
฿49,810
Return
found 2 days ago
Select Delta flight, departing Thu, 11 Jun from Seoul to St. Louis, returning Mon, 15 Jun, priced at ฿49,810 found 2 days ago
Delta
Thu, 11 Jun - Mon, 15 Jun
ICN
Seoul
STL
St. Louis
฿49,960 Return, found 2 days ago
฿49,960
Return
found 2 days ago
Select Delta flight, departing Thu, 11 Jun from Seoul to St. Louis, returning Mon, 15 Jun, priced at ฿49,960 found 2 days ago
Air Canada
Thu, 11 Jun - Mon, 15 Jun
ICN
Seoul
STL
St. Louis
฿51,785 Return, found 2 days ago
฿51,785
Return
found 2 days ago
Select Air Canada flight, departing Thu, 11 Jun from Seoul to St. Louis, returning Mon, 15 Jun, priced at ฿51,785 found 2 days ago
Japan Airlines
Thu, 11 Jun - Mon, 15 Jun
ICN
Seoul
STL
St. Louis
฿51,965 Return, found 2 days ago
฿51,965
Return
found 2 days ago
Select Japan Airlines flight, departing Thu, 11 Jun from Seoul to St. Louis, returning Mon, 15 Jun, priced at ฿51,965 found 2 days ago
Air Canada
Thu, 11 Jun - Mon, 15 Jun
ICN
Seoul
STL
St. Louis
฿52,090 Return, found 2 days ago
฿52,090
Return
found 2 days ago
Select Air Canada flight, departing Thu, 11 Jun from Seoul to St. Louis, returning Mon, 15 Jun, priced at ฿52,090 found 2 days ago
Air Canada
Thu, 11 Jun - Mon, 15 Jun
ICN
Seoul
STL
St. Louis
฿52,250 Return, found 2 days ago
฿52,250
Return
found 2 days ago
Select Air Canada flight, departing Thu, 11 Jun from Seoul to St. Louis, returning Mon, 15 Jun, priced at ฿52,250 found 2 days ago
Korean Air
Thu, 11 Jun - Mon, 15 Jun
ICN
Seoul
STL
St. Louis
฿52,385 Return, found 2 days ago
฿52,385
Return
found 2 days ago
Select Korean Air flight, departing Thu, 11 Jun from Seoul to St. Louis, returning Mon, 15 Jun, priced at ฿52,385 found 2 days ago
American Airlines
Thu, 11 Jun - Mon, 15 Jun
ICN
Seoul
STL
St. Louis
฿52,580 Return, found 2 days ago
฿52,580
Return
found 2 days ago
Select American Airlines flight, departing Thu, 11 Jun from Seoul to St. Louis, returning Mon, 15 Jun, priced at ฿52,580 found 2 days ago

Find the cheapest month to fly from Seoul (ICN) to St. Louis (STL)

November is typically the cheapest month to fly

From ฿18,861 - ฿35,637 per traveller.

Frequently asked questions

How much is a flight from Incheon Airport to STL?
Round-trip flights from Incheon Intl. Airport (ICN) to Lambert-St. Louis Intl. Airport (STL) start from ฿44,150. This figure is based on fares listed within the last 7 days on Expedia for flights departing within the next year — book today so you don't miss out. Prices and availability are subject to change. Additional terms apply.
Do I need to pay a cancellation fee if I cancel my flight from Seoul–Incheon Intl. Airport to STL?
Every air carrier has its own terms and conditions. If you do decide to cancel, follow the easy instructions on our Customer Service Portal.
How do I find cheap flights from Seoul–Incheon Intl. Airport to Lambert-St. Louis Intl. Airport (STL) that have flexible change policies?
Many airlines offer the option to reschedule your flight without a change fee. All you pay is the difference between the original flight and the new flight. When you're searching for Incheon Airport to St. Louis Lambert International Airport flights, you'll see a "no change fees" filter for you to select.
How far is the flight from Incheon Airport to Lambert-St. Louis Intl. Airport (STL)?
The distance is around 10,800 kilometres, so fill your carry-on bag with everything you need to make your journey comfortable. Not sure what to take on board your South Korea to St. Louis flight? Earplugs, a sleep mask and a travel pillow are among the essentials.
Which airlines fly direct from ICN to St. Louis Lambert International Airport?
There are no direct flights, so you'll need to make at least one stop between Incheon Airport and STL. Make the most of the layover time to stretch your legs and freshen up.
Are Incheon Intl. Airport (ICN) to STL flight tickets cheaper when they're purchased at the last minute?
Booking your trip from Incheon Intl. Airport (ICN) to Lambert Field last minute could save you some cash. However, you might miss out on a flight altogether! If you'd rather not take any chances, book well ahead of your departure date. In fact, Expedia has some of the best bargains up to 12 months in advance. If your preferred air carrier hasn't released tickets yet, check back often as deals are updated on Expedia all the time.

Travel information

Origin airport
Incheon Intl.
Destination airport
Lambert-St. Louis Intl.
Return price
฿44,150
Distance
10679 km

Book with confidence

Perfect flights from Seoul to St. Louis

Embark on an unforgettable journey without breaking the bank with Expedia's incredible deals on cheap flights from Seoul to St. Louis. Whether you're aching for a romantic escape with your partner, craving an adventurous solo expedition, or yearning to immerse yourself in the local history and culture, we've got you covered.
 
Picture yourself strolling through the streets of , surrounded by breathtaking architecture and absorbing the vibrant atmosphere of this captivating city. Indulge in the mouth-watering local specialties, from tantalizing street food to exquisite fine dining. With Expedia, you can experience all of this and more, without sacrificing your budget.
 
Our flexible Incheon Intl. to Lambert-St. Louis Intl. ticket options cater to your travel preferences, with incredible one-way fares from ฿28,490 and roundtrip prices from ฿44,150. Whether you're planning a short city break or a longer adventure, our dynamic pricing ensures that you find the best deals for your journey.
 
But the magic doesn't stop there. Expedia offers a range of partner services to enhance your trip. Rent a car at Lambert-St. Louis Intl. and explore and its surrounding areas at your own pace. Discover hidden gems off the beaten path, and create unforgettable memories. We also provide a handpicked selection of accommodations, from charming bed and breakfasts to luxury hotels, ensuring that you have a comfortable and memorable stay.
 
Planning your next great adventure is a breeze with Expedia. Our user-friendly platform, unbeatable prices, and round-the-clock customer support are designed to make your travel experience seamless and stress-free. So, why wait? Book your to travel arrangements today and embark on the journey of a lifetime in St. Louis.
Perfect flights from Seoul to St. Louis
*Available to Expedia members.