SEL - STL

$571 Find Cheap Flights from Seoul to St. Louis

This is the cheapest round-trip flight price found by a KAYAK user in the last 72 hours by searching for a flight from Seoul to St. Louis departing on 9/12. Fares are subject to change and may not be available on all flights or dates of travel. Click the price to replicate the search for this deal.
1 adult
1 adult, Economy

KAYAK searches hundreds of travel sites at once for deals on flights to St. Louis

 
These are the airlines KAYAK users have selected most often from within our search results in flight searches from Seoul to St. Louis, as well as popular online travel agencies
These are the airlines KAYAK users have selected most often from within our search results in flight searches from Seoul to St. Louis, as well as popular online travel agencies
Travelers love KAYAK
41,299,237 searches in the past 7 days on KAYAK

Save 22% or moreCompare multiple travel sites with one search.

Track pricesNot ready to book? Create a price alert for when prices drop.

Bundle and saveSave money when you bundle your flight + hotel.

Filter your dealsChoose cabin class, free Wi-Fi and more.

Flights Deals
Booking Insights
Flights Deals

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

 
Here are some of the best deals found on KAYAK recently from the most popular airlines for round-trip flights from Seoul to St. Louis that are departing in the next months. While these flights were available on KAYAK in the last 72 hours, prices and availability are subject to change and deals may expire.
Discover the best prices for you by selecting your travel dates on KAYAK.

Recent round-trip flight deals from Seoul to St. Louis

Fri, Sep 12 - Fri, Sep 19
Air Canada Logo
6:00 pm - 7:57 pmICN-STL
39h 57m1 stop
Air Canada Logo
4:05 pm - 4:15 pmSTL-ICN
34h 10m2 stops
$571Air Canada
Find Deal
Fri, Sep 12 - Fri, Sep 19
Air Canada Logo
6:00 pm - 3:18 pmICN-STL
35h 18m2 stops
Air Canada Logo
4:05 pm - 4:15 pmSTL-ICN
34h 10m2 stops
$582Air Canada
Find Deal
Tue, Nov 18 - Sun, Nov 23
United Airlines Logo
12:45 pm - 4:27 pmICN-STL
18h 42m1 stop
United Airlines Logo
5:29 pm - 4:15 pmSTL-ICN
31h 46m1 stop
$647United Airlines
Find Deal
Fri, Sep 19 - Sun, Nov 16
United Airlines Logo
4:50 pm - 4:53 pmICN-STL
38h 03m1 stop
United Airlines Logo
6:43 pm - 4:15 pmSTL-ICN
30h 32m2 stops
$650United Airlines
Find Deal
Fri, Sep 12 - Fri, Sep 19
American Airlines Logo
5:25 pm - 10:27 pmICN-STL
19h 02m1 stop
American Airlines Logo
5:18 am - 3:30 pmSTL-ICN
20h 12m1 stop
$654American Airlines
Find Deal
Wed, Sep 24 - Thu, Oct 16
Air Canada Logo
6:00 pm - 7:57 pmICN-STL
39h 57m1 stop
Air Canada Logo
4:05 pm - 4:15 pmSTL-ICN
58h 10m2 stops
$659Air Canada
Find Deal
Sat, Sep 13 - Sat, Sep 20
Delta Logo
6:40 pm - 2:44 pmICN-STL
34h 04m1 stop
Delta Logo
5:30 pm - 3:20 pmSTL-ICN
31h 50m1 stop
$688Delta
Find Deal
Sat, Sep 13 - Sat, Sep 20
Delta Logo
10:15 am - 10:00 pmICN-STL
25h 45m2 stops
Delta Logo
5:30 pm - 3:20 pmSTL-ICN
31h 50m1 stop
$698Delta
Find Deal
Mon, Oct 13 - Tue, Oct 21
Korean Air Logo
6:40 pm - 11:02 pmICN-STL
18h 22m1 stop
Korean Air Logo
8:53 am - 5:20 pmSTL-ICN
18h 27m1 stop
$701Korean Air
Find Deal
Thu, Sep 25 - Sat, Oct 18
Korean Air Logo
6:40 pm - 11:09 pmICN-STL
18h 29m1 stop
Korean Air Logo
6:40 am - 4:25 pmSTL-ICN
19h 45m1 stop
$767Korean Air
Find Deal
Booking Insights

KAYAK's insights & trends for Seoul to St. Louis flights

Get data-powered insights and trends into flights from Seoul to St. Louis to help you find the cheapest flights, the best time to fly and much more.

What’s the cheapest day of the week to fly from Seoul to St. Louis?

The average price of all round-trip flights from Seoul to St. Louis clicked on KAYAK for each day over the last 12 months.

If you are looking for a flight deal from Seoul to St. Louis, look for departures on Thursdays and avoid leaving on a Saturday, as it's usually the priciest day. When flying back from St. Louis, Wednesday is the cheapest day to fly and Friday is the most expensive.

Find deals

Good to know

Cheapest flight$571
Flight from Seoul Incheon Airport to St. Louis

When to book flights from Seoul to St. Louis

Are your dates flexible? Find out the best times to travel from Seoul to St. Louis based on our flight data from the last year. Discover the cheapest month and even day to fly.
Estimated round-trip price
KAYAK looks at all historical flight data for each date to provide a predicted price for one-way trips or round-trips with a duration up to 40 days. While we try to provide actual minimum prices for each date, some prices are predictions and actual prices may differ.

FAQs for booking flights from Seoul to St. Louis

  • What is the cheapest flight from Seoul to St. Louis?

    In the last 3 days, the lowest price for a flight from Seoul to St. Louis was $617 for a one-way ticket and $571 for a round-trip.

  • Do I need a passport to fly between Seoul and St. Louis?

    A passport is required to fly from Seoul to St. Louis.

  • Which airports will I be using when flying from Seoul to St. Louis?

    There are 2 airports in Seoul (Seoul Gimpo Intl and Incheon Intl.) and only 1 airport in St. Louis (Lambert-St Louis). The cheapest flights are generally found on the Seoul Incheon Airport to Lambert-St Louis flight route.

  • Which aircraft models fly most regularly from Seoul to St. Louis?

    We unfortunately don’t have that data for this specific route.

  • Which airline alliances offer flights from Seoul to St. Louis?

    Star Alliance, oneworld, and SkyTeam are the airline alliances operating flights between Seoul and St. Louis, with oneworld being the most commonly used for this route.

  • How does KAYAK find such low prices on flights from Seoul to St. Louis?

    KAYAK is a travel search engine. That means we look across the web to find the best prices we can find for our users. With over 2 billion flight queries processed yearly, we are able to display a variety of prices and options on flights from Seoul to St. Louis.

  • How does KAYAK's flight Price Forecast tool help me choose the right time to buy my flight ticket from Seoul to St. Louis?

    KAYAK’s flight Price Forecast tool uses historical data to determine whether the price for a flight to St. Louis from Seoul is likely to change within 7 days, so travelers know whether to wait or book now.

  • What is the Hacker Fare option on flights from Seoul to St. Louis?

    Hacker Fares allow you to combine one-way tickets in order to save you money over a traditional round-trip ticket. You could then fly to St. Louis with an airline and back to Seoul with another airline.

  • What is KAYAK's "flexible dates" feature and why should I care when looking for a flight from Seoul to St. Louis?

    Sometimes travel dates aren't set in stone. If your preferred travel dates have some wiggle room, flexible dates will show you all the options when flying to St. Louis from Seoul up to 3 days before/after your preferred dates. You can then pick the flights that suit you best.

Reviews of the top airline flying from Seoul to St. Louis

 
See real verified KAYAK customer reviews for airlines flying from Seoul to St. Louis. Airline scores are aggregated from all reviews left by passengers on KAYAK after flying with an airline. KAYAK doesn’t show reviews that are older than 5 years. Learn how KAYAK collects reviews.
Need help choosing which airline to fly with from Seoul to St. Louis? KAYAK airline reviews give an overall score for each airline based on loads of factors, including comfort, boarding, in-flight entertainment and more, to make your decision easier. See airline scores according to verified KAYAK customer reviews.
8.0
DeltaOverall score based on 7980 reviews
7.9Comfort
8.5Crew
7.3Food
8.2Boarding
7.9Entertainment
Airline reviews

Check in process was terrible. Lady at counter didn’t know what she was doing

4.0 OkayAnonymous, Jul 2025ICN - SEA
Read more Delta reviews

Check in process was terrible. Lady at counter didn’t know what she was doing

Delayed and took off even later than the scheduled delay time

For a 69 year old with health problems I had the worse experience, no wheelchair when I entered a lady told me to sit and wait while a gentleman told me I had to walk to the Delta station, which I did. I had a carry on and a bag, and I was traveling with my service dog, which was on his carrier and the lady charged me for my carry on luggage, beside all the waiting cause of the delay, I had to walk to get my luggage cause no wheelchair showed up, I am so disappointed. I will get in touch with the company. I got home at 3:00 am, not good for my health situation.

Great experience on Delta. Staff from baggage check to flight attendants were very courteous and professional. My only issue was a personal preference for pretzels instead of the chips and cookies that were offered.

The crew was amazing; Von, Vera and Guadalupe were very friendly and attentive throughout the entire flight. They were friendly and welcoming to everyone. A solid and dedicated team for sure!

Terrible. I was bumped off of my original flight and spent the next six days fighting to get back on it. I lost hours of my vacation trying to get this situation corrected.

There was no problems, just a little uncomfortable with seats that do not lay back a little

Always good but we must do something about people in rows ahead of you that don't put their seats back up when they are suppose to. And It's rough to not be able to even lean over to get something out of my purse.

Flight was delayed, 30+ bags had to be gate checked. Crew were very friendly!

Everything was good until we were boarding our connection flight in Atlanta, we were told to gate check our carry-on, but when we got inside the plane, there was plenty of room in the overhead.

Everything you need to know for your flight from Seoul to St. Louis

Information on your arrival and departure airports

St. Louis (STL)

Not what you’re looking for? Find thousands of other hotels, flights, car rentals and package deals with KAYAK.