₩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 ₩1,698,800 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

Air Canada
Thu, Nov 19 - Wed, Nov 25
ICN
Seoul
STL
St. Louis
₩1,698,800 Roundtrip, found 4 days ago
₩1,698,800
Roundtrip
found 4 days ago
Select Air Canada flight, departing Thu, Nov 19 from Seoul to St. Louis, returning Wed, Nov 25, priced at ₩1,698,800 found 4 days ago
Air Canada
Wed, Dec 16 - Wed, Dec 30
ICN
Seoul
STL
St. Louis
₩1,826,800 Roundtrip, found 4 days ago
₩1,826,800
Roundtrip
found 4 days ago
Select Air Canada flight, departing Wed, Dec 16 from Seoul to St. Louis, returning Wed, Dec 30, priced at ₩1,826,800 found 4 days ago
Delta
Thu, Nov 19 - Wed, Nov 25
ICN
Seoul
STL
St. Louis
₩1,873,700 Roundtrip, found 4 days ago
₩1,873,700
Roundtrip
found 4 days ago
Select Delta flight, departing Thu, Nov 19 from Seoul to St. Louis, returning Wed, Nov 25, priced at ₩1,873,700 found 4 days ago
Delta
Thu, Nov 19 - Wed, Nov 25
ICN
Seoul
STL
St. Louis
₩1,900,700 Roundtrip, found 4 days ago
₩1,900,700
Roundtrip
found 4 days ago
Select Delta flight, departing Thu, Nov 19 from Seoul to St. Louis, returning Wed, Nov 25, priced at ₩1,900,700 found 4 days ago
Korean Air
Thu, Nov 19 - Wed, Nov 25
ICN
Seoul
STL
St. Louis
₩1,973,700 Roundtrip, found 4 days ago
₩1,973,700
Roundtrip
found 4 days ago
Select Korean Air flight, departing Thu, Nov 19 from Seoul to St. Louis, returning Wed, Nov 25, priced at ₩1,973,700 found 4 days ago
Delta
Mon, Apr 27 - Sun, May 3
ICN
Seoul
STL
St. Louis
₩2,122,800 Roundtrip, found 3 hours ago
₩2,122,800
Roundtrip
found 3 hours ago
Select Delta flight, departing Mon, Apr 27 from Seoul to St. Louis, returning Sun, May 3, priced at ₩2,122,800 found 3 hours ago
Delta
Wed, Jun 24 - Tue, Jun 30
ICN
Seoul
STL
St. Louis
₩2,223,000 Roundtrip, found 20 hours ago
₩2,223,000
Roundtrip
found 20 hours ago
Select Delta flight, departing Wed, Jun 24 from Seoul to St. Louis, returning Tue, Jun 30, priced at ₩2,223,000 found 20 hours ago
United
Mon, Apr 27 - Sun, May 3
ICN
Seoul
STL
St. Louis
₩2,226,800 Roundtrip, found 3 hours ago
₩2,226,800
Roundtrip
found 3 hours ago
Select United flight, departing Mon, Apr 27 from Seoul to St. Louis, returning Sun, May 3, priced at ₩2,226,800 found 3 hours ago
Delta
Wed, Jun 24 - Tue, Jun 30
ICN
Seoul
STL
St. Louis
₩2,323,000 Roundtrip, found 20 hours ago
₩2,323,000
Roundtrip
found 20 hours ago
Select Delta flight, departing Wed, Jun 24 from Seoul to St. Louis, returning Tue, Jun 30, priced at ₩2,323,000 found 20 hours ago
Qatar Airways
Wed, Jul 22 - Mon, Aug 17
ICN
Seoul
STL
St. Louis
₩2,412,600 Roundtrip, found 2 days ago
₩2,412,600
Roundtrip
found 2 days ago
Select Qatar Airways flight, departing Wed, Jul 22 from Seoul to St. Louis, returning Mon, Aug 17, priced at ₩2,412,600 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 ₩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 ₩1,698,800. 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
₩1,698,800
Distance
10679 km
*Available to Expedia members.