$2,480 Cheap Lufthansa flights St. Louis (STL) to Seoul (ICN)

View $2,480 flight on Fri, Dec 19, 2025Opens in a new window

  • Plan, book, fly with confidence

  • trending down icon
    Be in the know
    Get alerts if flight prices drop or rise*
  • bex rewards loyalty icon
    Book smarter
    Save up to 30% on select hotels after you book a flight*
  • one key icon
    Earn twice
    Earn your airline miles on top of our OneKeyCash
    Learn about One Key

$2,480 Cheap Lufthansa flights St. Louis (STL) to Seoul (ICN)

Prices were available within the past 7 days and start at $2,480 for one-way flights and for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

Flights from St. Louis (STL) to Seoul (ICN)
Origin airport
Lambert-St. Louis Intl.
Destination airport
Incheon Intl.
Airlines serving
Air Canada, Alaska Airlines, American Airlines, Asiana Airlines, Cathay Pacific, Delta, Hawaiian Airlines, Korean Air, United
Popular airline
Air Canada
Distance
6674 mi

Frequently asked questions

How much is a Lufthansa flight from Lambert-St. Louis Intl. Airport (STL) to Incheon Intl. Airport (ICN)?
Landing cheap one-way Lufthansa flights from STL to ICN from $2,480 on Expedia is simple --- just filter by "Price (lowest to highest)." Alternatively, check out our budget-friendly return fares for your next getaway.**These prices were available on Expedia within the past 7 days, for flights departing within the next year. Prices and availability are subject to change. Additional terms apply.
What is the cheapest month to fly from STL to ICN with Lufthansa?
Lufthansa flights to Seoul are usually more affordable in the off-peak months of January and February. Whether you need a round-trip or one-way ticket, you could score a better deal then.
What is the cheapest time to book flights from Lambert-St. Louis Intl. Airport (STL) to Incheon Intl. Airport (ICN) with Lufthansa?
Start your search for Lufthansa flights from STL to ICN about one month before you want to go. The cheapest time to reserve an international flight is usually 18 to 29 days ahead of your travel date when you can save 17% versus booking four to five months in advance. No matter your fare class or itinerary, the best day to book international airfare is usually Sunday. Friday is often the most expensive. Passengers booking on a Sunday can save 17% on average compared to those who book on a Friday.**Ideal booking window recommendation is based on average round-trip ticket prices for January through November for 2024. Best day of the week to book recommendation is based on average round-trip ticket prices for January through October 2024. All data sourced from ARC's global airline sales database.
Does Lufthansa fly nonstop from Lambert-St. Louis Intl. Airport (STL) to Incheon Intl. Airport (ICN)?
To figure out if there's a direct route from STL to ICN with Lufthansa or another airline, select the "Nonstop" filter when searching for flights.
What is the earliest Lufthansa flight from STL to ICN?
To find the earliest departure from STL to ICN with Lufthansa, filter your search by "Morning" and "Early Morning." Booking an early flight generally means cancellations are less likely.**Most reliable time of the day recommendation is based on January through August 2024 flight status data sourced from OAG's global flight data platform.
What airports does Lufthansa fly into in Seoul?
Get on a Lufthansa flight from Lambert-St. Louis Intl. Airport (STL) to Seoul, and you'll most likely come in to Incheon Intl. Airport (ICN). This is the airline's main hub in this destination.
What kind of luggage can I take on a Lufthansa flight from Lambert-St. Louis Intl. Airport (STL) to Incheon Intl. Airport (ICN)?
On a standard economy flight with Lufthansa from STL to ICN, you can bring 1 checked-in bag up to 50 lb with dimensions not exceeding 62 inches in total. For hand luggage, you're permitted 2 cabin bags weighing up to 17 lb and measuring no more than 21 inches x 15 inches x 9 inches. Size and weight allowances can differ depending on your airfare type and cabin class. To make sure you won't face extra fees at the terminal, double-check your Lufthansa booking or visit the airline's website before loading up your suitcase.
Why fly with Lufthansa from STL to ICN?
With an excellent in-flight experience and a rewarding loyalty program, Lufthansa is a favorite for many passengers heading from STL to ICN. Also, if you're a Lufthansa Miles and More and One Key™ member booking with Expedia, you could earn OneKeyCash™* on eligible flights on top of your airline miles, which can be spent on future getaways.*OneKeyCash™ disclaimer - OneKeyCash™ is not redeemable for cash and can only be used on Expedia, Hotels.com and Vrbo.
Can I change or cancel my Lufthansa flight from Lambert-St. Louis Intl. Airport (STL) to Incheon Intl. Airport (ICN)?
Changes are generally free within 24 hours of booking, but your airline may charge a fee after that. For more details about modifying your reservation, head to your "Trips," select your flight and click on "Manage Booking." If you'd like the flexibility to change your plans without additional costs, tick the "No cancel fee" or "Changes included" filter when planning your next adventure.

Explore a world of travel with Expedia

*Available to One Key members.