₩1,206,000 Cheap Flights from Seoul (ICN) to St. Louis (STL)

View ₩1,206,000 flight on Thu, Sep 10, 2026Opens in a new window

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

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

Prices were available within the past 7 days and start at ₩1,206,000 for one-way flights and ₩1,870,800 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

Delta
Wed, Nov 18 - Sat, Nov 21
ICN
Seoul
STL
St. Louis
₩1,870,800 Roundtrip, found 13 hours ago
₩1,870,800
Roundtrip
found 13 hours ago
Select Delta flight, departing Wed, Nov 18 from Seoul to St. Louis, returning Sat, Nov 21, priced at ₩1,870,800 found 13 hours ago
Delta
Wed, Nov 18 - Sat, Nov 21
ICN
Seoul
STL
St. Louis
₩1,972,800 Roundtrip, found 13 hours ago
₩1,972,800
Roundtrip
found 13 hours ago
Select Delta flight, departing Wed, Nov 18 from Seoul to St. Louis, returning Sat, Nov 21, priced at ₩1,972,800 found 13 hours ago
Korean Air
Wed, Nov 18 - Sat, Nov 21
ICN
Seoul
STL
St. Louis
₩1,997,800 Roundtrip, found 13 hours ago
₩1,997,800
Roundtrip
found 13 hours ago
Select Korean Air flight, departing Wed, Nov 18 from Seoul to St. Louis, returning Sat, Nov 21, priced at ₩1,997,800 found 13 hours ago
Delta
Wed, Nov 18 - Sat, Nov 21
ICN
Seoul
STL
St. Louis
₩1,999,800 Roundtrip, found 13 hours ago
₩1,999,800
Roundtrip
found 13 hours ago
Select Delta flight, departing Wed, Nov 18 from Seoul to St. Louis, returning Sat, Nov 21, priced at ₩1,999,800 found 13 hours ago
Delta
Sat, Oct 3 - Fri, Oct 9
ICN
Seoul
STL
St. Louis
₩2,020,600 Roundtrip, found 1 day ago
₩2,020,600
Roundtrip
found 1 day ago
Select Delta flight, departing Sat, Oct 3 from Seoul to St. Louis, returning Fri, Oct 9, priced at ₩2,020,600 found 1 day ago
Air Canada
Wed, Nov 18 - Sat, Nov 21
ICN
Seoul
STL
St. Louis
₩2,035,500 Roundtrip, found 13 hours ago
₩2,035,500
Roundtrip
found 13 hours ago
Select Air Canada flight, departing Wed, Nov 18 from Seoul to St. Louis, returning Sat, Nov 21, priced at ₩2,035,500 found 13 hours ago
Delta
Wed, Nov 18 - Sat, Nov 21
ICN
Seoul
STL
St. Louis
₩2,045,800 Roundtrip, found 13 hours ago
₩2,045,800
Roundtrip
found 13 hours ago
Select Delta flight, departing Wed, Nov 18 from Seoul to St. Louis, returning Sat, Nov 21, priced at ₩2,045,800 found 13 hours ago
Delta
Sat, Oct 3 - Fri, Oct 9
ICN
Seoul
STL
St. Louis
₩2,047,600 Roundtrip, found 1 day ago
₩2,047,600
Roundtrip
found 1 day ago
Select Delta flight, departing Sat, Oct 3 from Seoul to St. Louis, returning Fri, Oct 9, priced at ₩2,047,600 found 1 day ago
American Airlines
Sat, Oct 3 - Fri, Oct 9
ICN
Seoul
STL
St. Louis
₩2,156,000 Roundtrip, found 1 day ago
₩2,156,000
Roundtrip
found 1 day ago
Select American Airlines flight, departing Sat, Oct 3 from Seoul to St. Louis, returning Fri, Oct 9, priced at ₩2,156,000 found 1 day ago
EVA Airways
Tue, Nov 17 - Sat, Nov 21
ICN
Seoul
STL
St. Louis
₩2,210,800 Roundtrip, found 13 hours ago
₩2,210,800
Roundtrip
found 13 hours ago
Select EVA Airways flight, departing Tue, Nov 17 from Seoul to St. Louis, returning Sat, Nov 21, priced at ₩2,210,800 found 13 hours ago

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

November is typically the cheapest month to fly

From ₩855,707 - ₩1,616,813 per traveler.

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 ₩1,870,800. 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 kilometers, 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.
Airlines serving
Air Canada, American Airlines, Delta, Korean Air, Lufthansa, United
Roundtrip price
₩1,870,800
Distance
10679 km
*Available to Expedia members.