₩590,700 Cheap Flights from St. Louis (STL) to Seoul (ICN)

View ₩590,700 flight on Sun, Oct 26, 2025Opens in a new window

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

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

Prices were available within the past 7 days and start at ₩590,700 for one-way flights and ₩1,170,400 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

Delta
Sun, Oct 19 - Tue, Oct 28
STL
St. Louis
ICN
Seoul
₩1,170,400 Roundtrip, found 2 days ago
₩1,170,400
Roundtrip
found 2 days ago
Select Delta flight, departing Sun, Oct 19 from St. Louis to Seoul, returning Tue, Oct 28, priced at ₩1,170,400 found 2 days ago
Alaska Airlines
Sat, Oct 18 - Fri, Dec 12
STL
St. Louis
ICN
Seoul
₩1,170,400 Roundtrip, found 2 days ago
₩1,170,400
Roundtrip
found 2 days ago
Select Alaska Airlines flight, departing Sat, Oct 18 from St. Louis to Seoul, returning Fri, Dec 12, priced at ₩1,170,400 found 2 days ago
United
Tue, Oct 21 - Mon, Oct 27
STL
St. Louis
ICN
Seoul
₩1,170,400 Roundtrip, found 2 days ago
₩1,170,400
Roundtrip
found 2 days ago
Select United flight, departing Tue, Oct 21 from St. Louis to Seoul, returning Mon, Oct 27, priced at ₩1,170,400 found 2 days ago
Hawaiian Airlines
Thu, Oct 23 - Mon, Oct 27
STL
St. Louis
ICN
Seoul
₩1,170,400 Roundtrip, found 2 days ago
₩1,170,400
Roundtrip
found 2 days ago
Select Hawaiian Airlines flight, departing Thu, Oct 23 from St. Louis to Seoul, returning Mon, Oct 27, priced at ₩1,170,400 found 2 days ago
Air Canada
Sun, Sep 21 - Mon, Oct 6
STL
St. Louis
ICN
Seoul
₩1,175,000 Roundtrip, found 5 days ago
₩1,175,000
Roundtrip
found 5 days ago
Select Air Canada flight, departing Sun, Sep 21 from St. Louis to Seoul, returning Mon, Oct 6, priced at ₩1,175,000 found 5 days ago
Delta
Sat, Oct 18 - Tue, Oct 28
STL
St. Louis
ICN
Seoul
₩1,177,300 Roundtrip, found 2 days ago
₩1,177,300
Roundtrip
found 2 days ago
Select Delta flight, departing Sat, Oct 18 from St. Louis to Seoul, returning Tue, Oct 28, priced at ₩1,177,300 found 2 days ago
United
Mon, Oct 20 - Mon, Dec 15
STL
St. Louis
ICN
Seoul
₩1,238,100 Roundtrip, found 2 days ago
₩1,238,100
Roundtrip
found 2 days ago
Select United flight, departing Mon, Oct 20 from St. Louis to Seoul, returning Mon, Dec 15, priced at ₩1,238,100 found 2 days ago
United
Sun, Sep 21 - Mon, Oct 6
STL
St. Louis
ICN
Seoul
₩1,351,200 Roundtrip, found 5 days ago
₩1,351,200
Roundtrip
found 5 days ago
Select United flight, departing Sun, Sep 21 from St. Louis to Seoul, returning Mon, Oct 6, priced at ₩1,351,200 found 5 days ago
Delta
Sun, Sep 21 - Mon, Oct 6
STL
St. Louis
ICN
Seoul
₩1,372,100 Roundtrip, found 5 days ago
₩1,372,100
Roundtrip
found 5 days ago
Select Delta flight, departing Sun, Sep 21 from St. Louis to Seoul, returning Mon, Oct 6, priced at ₩1,372,100 found 5 days ago
Delta
Sun, Oct 19 - Sat, Nov 1
STL
St. Louis
ICN
Seoul
₩1,376,200 Roundtrip, found 2 days ago
₩1,376,200
Roundtrip
found 2 days ago
Select Delta flight, departing Sun, Oct 19 from St. Louis to Seoul, returning Sat, Nov 1, priced at ₩1,376,200 found 2 days ago

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

September is typically the cheapest month to fly

From ₩1,069,249 - ₩2,161,668 per traveler.

Frequently asked questions

How much is a flight from Lambert Field to ICN?
Round-trip tickets from Lambert Field to Seoul–Incheon Intl. Airport start from ₩1,170,400. This price is based on fares quoted within the last 7 days on Expedia for flights departing within the next year — book now 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 Lambert Field to Incheon Intl. Airport (ICN)?
Each air carrier has a different set of terms and conditions. If you decide to cancel your vacation, visit our Customer Service Portal.
How do I find cheap flights from Lambert Field to Incheon Intl. Airport (ICN) 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 STL to Incheon Intl. Airport (ICN) flights, you'll see a "no change fees" filter for you to select.
How far is the flight from Lambert Field to Incheon Airport?
You'll have 10,800 kilometers to cover on the long-haul St. Louis to South Korea route. Dress in comfy clothes and consider taking a pair of noise-canceling earphones.
Which airlines fly direct from Lambert-St. Louis Intl. Airport (STL) to Seoul–Incheon Intl. Airport?
Unfortunately, there are no airlines that fly direct between St. Louis Lambert International Airport and Incheon Airport. You'll have to book a flight with one or more stops.
Are STL to Incheon Intl. Airport (ICN) flight tickets cheaper when they're purchased at the last minute?
Last-minute planners can sometimes find a bargain, with some super cheap fares from St. Louis Lambert International Airport to Seoul–Incheon Intl. Airport surfacing a few weeks before the date of departure. If you'd rather plan ahead, Expedia compares and updates the best flight deals frequently — as early as a year in advance in some cases. It does depend on the carrier though, as not every airline advertises prices that far in advance.

Travel information

Travel information

Origin airport
Lambert-St. Louis Intl.
Destination airport
Incheon Intl.
Airlines serving
Air Canada, American Airlines, Delta, Korean Air, Lufthansa, United
Roundtrip price
₩1,170,400
Distance
10679 km

Book with confidence

Book with confidence

St. Louis to Incheon Flights

Sometimes you just need to get out of town or maybe you’re looking for a change of scenery. Regardless of the reason, a flight from St. Louis to Incheon will do just the trick! Go on, plan to see all the famous landmarks and eat your weight in the local cuisine. Your trip is beckoning, so answer the call by packing your suitcase and filling your travel itinerary with exploring Incheon.

Whether you’re flying for business or jet-setting on your personal time, you’ve come to the right place. Here at Expedia.com, we’ll pair you up with STL to ICN flights that won’t make your bank account wince. Ready to temporarily leave behind St. Louis for new horizons? Browse through our cheap airfare, and filter by flight times and dates until you find just what you had in mind. From flights without layovers to ones that arrive early in the morning, you’ll come across plane tickets that suit your travel preferences. You can even bundle your flight to ICN with hotels and car rentals to score even bigger savings.

All set to hit the clouds? Book your travel arrangements with us today and have left-over money to put toward your travel outings and adventures.

St. Louis to Incheon Flights

Explore a world of travel with Expedia

Explore a world of travel with Expedia

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