Cheap flights from Incheon Intl Airport to St. Louis from $491
This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from Incheon Intl Airport to St. Louis departing on 4/18. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
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How to get the cheapest flight ticket from Incheon Intl Airport to St. Louis
Look no further. We've gone through all the searches for this route on momondo so you have the important information and insights to find the cheapest flight ticket for your trip
What is the typical price of a round-trip flight between Incheon Intl Airport and St. Louis?
What is the cheapest day to depart on your flight to St. Louis?
The cheapest day to depart on your flight to St. Louis is on a Wednesday when prices can be found for as low as $1,203. This is often the case because there is less demand to fly during this day of the week. If your travel schedule is flexible, try to avoid departing on a Monday because tickets tend to average around $1,719. These prices are subject to change though, so be sure to set up a Price Alert for flights to St. Louis.
What is the cheapest time of day to depart on your flight to St. Louis?
Flying to St. Louis from Incheon Intl Airport in the evening is the least expensive time of day to depart. momondo users have found prices as low as $1,112 when looking at flights departing in the evening. In the morning is when there is more demand to fly to St. Louis, so prices are often more expensive at around $1,719 per ticket.
When to book flights from Incheon Intl Airport to St. Louis
Cheap Incheon Intl Airport to St. Louis (ICN to STL) flight deals and tips
Find info about flight duration, direct flights, and airports for your flight from Incheon Intl Airport to St. Louis
How far is Incheon Intl to Lambert-St Louis by plane?
Lambert-St Louis is 6682.0 mi away from Incheon Intl. By plane, this route typically takes 18h 24m.
When did momondo last update prices for flights from Incheon Intl Airport to Lambert-St Louis Airport?
Prices for flights from Incheon Intl Airport to Lambert-St Louis Airport are updated daily.
How many operators does momondo search for flights from Incheon Intl Airport to Lambert-St Louis Airport?
As of April 2025, there are 2 operators available to choose from for flights from Incheon Intl Airport to Lambert-St Louis Airport.
How old do you have to be to fly from Incheon Intl Airport to Lambert-St Louis Airport?
The minimum age a child must be to fly alone is five but airlines that offer an unaccompanied minor (UNMR) service will have their own age restrictions, including rules around flight length, timings, and stopovers. We always recommend checking with the individual airline you are booking with to travel from Incheon Intl Airport to Lambert-St Louis Airport.
What documentation or ID do you need to fly to Lambert-St Louis Airport?
The travel and health documents required for your trip to Lambert-St Louis Airport can vary based on your itinerary and personal situation. As a rule, consider having multiple documents such as a national ID card or driver’s license, and a passport valid for six-months after you plan to arrive at Lambert-St Louis Airport. We always recommend checking with your airline or a trusted third party such as IATA to get advice.
What is the most popular airline from Incheon Intl Airport to St. Louis?
momondo data reveals that the most frequently booked airline on the route from Incheon Intl Airport to St. Louis is Delta, representing 64% of all bookings. The subsequent popular airline is Korean Air at 36%.
Best airlines flying from Incheon Intl Airport to St. Louis
Compare and see reviews for airlines that fly from Incheon Intl Airport to St. Louis with momondo
| Airline | Rating | Free Cancellation | Price | ||
|---|---|---|---|---|---|
| PriceFrom $941 | Free Cancellation | Rating 8.0 7,899 reviews | |||
| PriceFrom $1,312 | Free Cancellation | Rating 8.4 1,052 reviews |
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Why should I use momondo to find a flight deal from Seoul to St. Louis?
To find the flight that best suits your needs, momondo gathers a range of flights from a large pool of different airlines and agents; you can then use our insights and filters to find and book the right flight to St. Louis from Seoul.
Can I find flights from Seoul to St. Louis with flexible booking policies on momondo?
Flights from Seoul to St. Louis with flexible booking policies can be found by using the search form above and then selecting our dedicated flexible booking filter, which will highlight only the flights where this policy is applied.
How can momondo help me find flights from Seoul to St. Louis?
Once you have performed a search for Seoul to St. Louis flights, momondo helps you find the right one by offering useful filters to narrow down your flight selection. Flights can be filtered by multiple factors such as airline, airport and price; but also by other criteria like aircraft type and payment method.
I’m not ready to book a flight from Seoul to St. Louis right now. Can momondo alert me if prices change?
If you are not ready to book a flight from Seoul to St. Louis now, use our insights above to find helpful tips or alternatively set up a price alert, where momondo will track prices on flights to St. Louis and let you know when they change.