SEL - STL

$499 Find Cheap Flights from Seoul to St. Louis

This is the cheapest one-way flight price found by a KAYAK user in the last 72 hours by searching for a flight from Seoul to St. Louis departing on 12/20. 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, 0 bags

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
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Flight 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

Mon, Nov 17 - Sun, Nov 30
American Airlines Logo
7:15 pm - 9:20 amICN-STL
29h 05m2 stops
American Airlines Logo
6:13 pm - 4:45 pmSTL-ICN
31h 32m1 stop
$618American Airlines
Find Deal
Tue, Nov 25 - Tue, Dec 2
Delta Logo
7:30 pm - 11:59 amICN-STL
31h 29m1 stop
Delta Logo
5:34 pm - 4:30 pmSTL-ICN
31h 56m2 stops
$620Delta
Find Deal
Tue, Nov 25 - Tue, Dec 2
American Airlines Logo
7:15 pm - 10:34 pmICN-STL
18h 19m1 stop
American Airlines Logo
5:17 am - 4:45 pmSTL-ICN
20h 28m1 stop
$624American Airlines
Find Deal
Tue, Nov 25 - Tue, Dec 2
United Airlines Logo
12:45 pm - 10:22 pmICN-STL
24h 37m2 stops
United Airlines Logo
5:27 pm - 4:15 pmSTL-ICN
31h 48m2 stops
$646United Airlines
Find Deal
Thu, Feb 12 - Mon, Feb 16
Delta Logo
7:30 pm - 11:10 pmICN-STL
18h 40m1 stop
Delta Logo
6:30 am - 3:30 pmSTL-ICN
18h 00m1 stop
$690Delta
Find Deal
Thu, Feb 12 - Mon, Feb 16
United Airlines Logo
12:45 pm - 10:36 amICN-STL
36h 51m2 stops
United Airlines Logo
11:25 am - 5:40 amSTL-ICN
27h 15m2 stops
$890United Airlines
Find Deal
Fri, Nov 14 - Sun, Nov 30
Air Canada Logo
6:55 pm - 3:29 pmICN-STL
35h 34m2 stops
Air Canada Logo
4:05 pm - 5:10 pmSTL-ICN
34h 05m2 stops
$1,042Air Canada
Find Deal
Thu, Feb 19 - Mon, Feb 23
ANA Logo
7:50 pm - 12:25 pmGMP-STL
31h 35m2 stops
ANA Logo
11:25 am - 11:20 amSTL-GMP
32h 55m2 stops
$1,241ANA
Find Deal
Thu, Feb 19 - Mon, Feb 23
ANA Logo
12:25 pm - 12:25 pmGMP-STL
39h 00m2 stops
ANA Logo
6:30 am - 11:20 amSTL-GMP
37h 50m2 stops
$1,243ANA
Find Deal
Sat, Dec 13 - Sat, Dec 20
Air Canada Logo
6:55 pm - 11:01 amICN-STL
31h 06m3 stops
Air Canada Logo
4:05 pm - 5:10 pmSTL-ICN
34h 05m2 stops
$3,567Air Canada
Find Deal

Everything you should know

Top airlines
American Airlines
Cheapest • from $618 (round-trip)
Delta
Best reviews • 7.9 score
Airline reviews
Airline reviews
+1
+1
Airline reviews
Airline reviews
+1
Cheapest round-trip
$618
American Airlines
Mon 11/17Sun 11/30
ICN - STL • 2 stops
Cheapest one-way
$499
Typical prices: $512-$918
Multiple Airlines
Sat 12/20
ICN - STL • 3 stops
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KAYAK searches 100s of sites at once to find you the best travel deals.
We hope you love your trip to St. Louis!
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.

Good to know

Cheapest flight$499
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 $499 for a one-way ticket and $618 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?

    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 airlines 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.
7.9
DeltaOverall score based on 7992 reviews
7.3Food
7.9Comfort
7.9Entertainment
8.5Crew
8.2Boarding
Airline reviews

DELTA does a terrific job making sure you are well taken care of during the flight, gives you assurance before the flight through numerous email notifications about your upcoming flight & lastly good follow up after the flight making sure your needs were mat. It has been, is & will continue to be my carrier of choice in all my future travels. Good Job DELTA

10.0 ExcellentAnonymous, Oct 2025CDG - SEA
Read more Delta reviews

DELTA does a terrific job making sure you are well taken care of during the flight, gives you assurance before the flight through numerous email notifications about your upcoming flight & lastly good follow up after the flight making sure your needs were mat. It has been, is & will continue to be my carrier of choice in all my future travels. Good Job DELTA

Staff were friendly and happy. Delta could make sure passengers that don't have the app know of changes. Without Kayak I would not have known about the change of gate or the delay. Kayak was faster to notify me.

They ended up paying for the bag twice, but the counter wouldn't take my baggage receipt. Left it to me to resolve. Not sure how to resolve the issue.

The customer service before board was very rude and when I expressed my concerns about making the connecting flight she laughed and told me I bought the wrong ticket. I explained once it showed the flight was delayed it no longer let me change seats or anything. I was trying to upgrade to make sure I would get to the next gate on time.

Non stop on long haul is the way to go. Great experience

Seats comfortable, service and food very mediocre, staff not very attentive, worse than many other our flights with Delta.

Overall good experience; however, there was one flight attendant who was rather rough compared to everyone else. Everything else was good: entertainment, food. Delta keeps on delivering! Thank you!

The flight used a B767 with a very old interior from before 2014. The entertainment system did not work at all during the flight despite attempts to reset the system. It was like they flew this route just to be competitive.

Crew blocked exits to front of ship with galley carts. Also split five person family apart on international flight without fixing.

They changed planes and the new plane couldn’t carry enough fuel to fly across the country so we had to stop in Kansas City to refuel. Flight was delayed .

Wish some foods provided rather than just biscuit/cookie for flight more than 2 hours

Wish a flight with more than 2 hours with some snack rather than just cookie/biscuit.

The flight attendant, a black woman with curly hair who sat near Row 21, was wonderful and kind.

It was good..clean, comfy seat. Friendly warm welcoming crew. Was able to check my cabin luggage at the gate which I was able to pickup in a decent time from baggage claim. The app gave all updates from delays to baggage claim info. Overall smooth flight.

Nice comfortable flight from Barcelona back to the states. The premium economy offers the extra room we need for my husband. The food was good and our flight attendants were excellent.

Flight was delayed leaving Dallas. Arrived about 2 hours later than scheduled.

Flight delayed and missed connection. Rescheduled flight cancelled after 6 hrs wait. Rerouted thru ORD, flight cancelled, overnight stay in ORD. Still in the air on new flight!

We are too tired and frustrated to comment politely at this point

Terrible. Our luggage was delayed and couldn’t be delivered for several days. We got bad information from the airline agents at baggage claim. We had to pick up our car so we wouldn’t be charged for an extra day. We got lost in the maze of airport parking. The baggage claim agents didn’t offer us any compensation for our extra time and expense. We are tired, hungry and very frustrated.

The flight was flawless and we even arrived between 20 and 25 minutes early!

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

Information on your arrival and departure airports

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