Cheap flights from St. Louis to Incheon Intl Airport from $666
This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from St. Louis to Incheon Intl Airport departing on 4/20. 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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WestJet flights from St. Louis to Incheon Intl Airport
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How to get the cheapest flight ticket from St. Louis to Incheon Intl Airport
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 St. Louis and Incheon Intl Airport?
What is the cheapest month to fly to Incheon Intl Airport?
The cheapest month to fly to Incheon Intl Airport from St. Louis is in January. Flight prices, which tend to average around $902, are often lower during this time because this is during the off-season. If you are unable to visit Incheon Intl Airport during the month of January, then departing from St. Louis during the month February is also very affordable. Most momondo users find prices during this month for around $1,006.
What is the cheapest day to depart on your flight to Incheon Intl Airport?
The cheapest day to depart from St. Louis to Incheon Intl Airport is on a Wednesday when prices can be found for as low as $1,462. If your travel schedule is flexible, try to avoid departing on a Friday because tickets tend to average around $1,782. These prices are subject to change though, so be sure to set up a Price Alert for flights to Incheon Intl Airport.
What is the cheapest time of day to depart on your flight to Incheon Intl Airport?
In the afternoon is the cheapest time of day to fly from St. Louis to Incheon Intl Airport when you can find flight prices for as low as $1,485. Flying to Incheon Intl Airport in the afternoon is an ideal time because this is during off-peak travel hours. If you have a flexible travel schedule, then try to avoid flying at noon when prices are $1,718 on average. Flights to Incheon Intl Airport from St. Louis at noon are generally more expensive because this time of day is more convenient for travelers’ schedules.
How far in advance should I book a flight to Incheon Intl Airport?
You are more likely to see cheaper flights to Incheon Intl Airport from St. Louis when booking 17 weeks ahead of your departure date. In general, you can expect to find flights to Incheon Intl Airport for around $1,403 when searching 17 weeks out.However, flight prices might be lower outside of this timeframe. For example, people recently found flights to Incheon Intl Airport from St. Louis for as low as $1,099 on momondo.
What is the cheapest airline that flies from Lambert-St Louis to Incheon Intl?
American Airlines, Korean Air, and United Airlines are the most popular carriers operating from Lambert-St Louis to Incheon Intl
What airlines fly to Incheon Intl Airport?
Air Canada, Delta and American Airlines are the top three most popular airlines that fly to Incheon Intl Airport from St. Louis according to our data. Air Canada is the first choice among our users, with 35% of people opting to fly with this airline when traveling to Incheon Intl Airport. Keep in mind that there are 5 different airlines that fly to Incheon Intl Airport on a routine basis, so you have a few additional options to choose from.
When to book flights from St. Louis to Incheon Intl Airport
Cheap St. Louis to Incheon Intl Airport (STL to ICN) flight deals and tips
Find info about flight duration, direct flights, and airports for your flight from St. Louis to Incheon Intl Airport
How far is Lambert-St Louis to Incheon Intl by plane?
The straight-line distance from Lambert-St Louis to Incheon Intl is 6682.0 mi. By plane, this route typically takes 18h 00m.
When did momondo last update prices for flights from Lambert-St Louis Airport to Incheon Intl Airport?
Prices for flights from Lambert-St Louis Airport to Incheon Intl Airport are refreshed on a daily basis.
How many operators does momondo search for flights from Lambert-St Louis Airport to Incheon Intl Airport?
The number of operators available for flights from Lambert-St Louis Airport to Incheon Intl Airport is 5 as of April 2025.
How old do you have to be to fly from Lambert-St Louis Airport to Incheon Intl Airport?
Although the minimum age for a child to fly alone is five, airlines that offer an unaccompanied minor (UMNR) service may have their own age limits, which could be impacted by factors such as flight length, timing, and layovers. It is recommended that you verify with the airline you are booking with for travel from Lambert-St Louis Airport to Incheon Intl Airport.
What documentation or ID do you need to fly to Incheon Intl Airport?
The travel and health documents required for your trip to Incheon Intl 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 Incheon Intl 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 St. Louis to Incheon Intl Airport?
momondo data reveals that the most frequently booked airline on the route from St. Louis to Incheon Intl Airport is Air Canada, representing 30% of all bookings. The subsequent popular airlines are Delta at 27%, American Airlines at 16%, and Korean Air at 13%.
Best airlines flying from St. Louis to Incheon Intl Airport
Compare and see reviews for airlines that fly from St. Louis to Incheon Intl Airport with momondo
| Airline | Rating | Free Cancellation | Price | ||
|---|---|---|---|---|---|
| PriceFrom $799 | Free Cancellation | Rating 7.0 9,028 reviews | |||
| PriceFrom $902 | Free Cancellation | Rating 8.0 7,897 reviews | |||
| PriceFrom $902 | Free Cancellation | Rating 7.4 8,616 reviews | |||
| PriceFrom $996 | Free Cancellation | Rating 7.2 10,000 reviews | |||
| PriceFrom $1,080 | Free Cancellation | Rating 8.4 1,051 reviews |
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Why should I use momondo to find a flight deal from St. Louis to Seoul?
momondo compares prices from hundreds of airlines and agents so you can find and book the best deal on flights from St. Louis to Seoul. Millions of users trust and use momondo every year so you are in good hands.
Can I find flights from St. Louis to Seoul with flexible booking policies on momondo?
Yes. momondo allows you to filter the results for St. Louis to Seoul flights to just show those with flexible booking policies.
How can momondo help me find flights from St. Louis to Seoul?
Once you have performed a search for St. Louis to Seoul 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 St. Louis to Seoul right now. Can momondo alert me if prices change?
If you are not ready to book a flight from St. Louis to Seoul now, use our insights above to find helpful tips or alternatively set up a price alert, where momondo will track prices on flights to Seoul and let you know when they change.