$587 Find Cheap Flights from South Korea 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 to St. Louis departing on 9/19. 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 for flights 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 for flights to St. Louis, as well as popular online travel agencies
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Cheap Flights from South Korea to St. Louis

 
Here are some of the best deals found on KAYAK recently from the most popular airlines for round-trip flights from South Korea 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 South Korea to St. Louis

Fri, Sep 19 - Mon, Oct 20
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
$587Air Canada
Find Deal
Fri, Sep 19 - Mon, Oct 20
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
$594Air Canada
Find Deal
Fri, Sep 19 - Sun, Oct 26
United Airlines Logo
4:50 pm - 10:02 amICN-STL
31h 12m2 stops
United Airlines Logo
5:29 pm - 3:15 pmSTL-ICN
31h 46m1 stop
$667United Airlines
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Mon, Sep 29 - Mon, Oct 6
 Logo
6:20 pm - 3:44 pmICN-STL
35h 24m2 stops
 Logo
6:33 am - 5:55 pmSTL-ICN
21h 22m1 stop
Fri, Sep 19 - Mon, Oct 20
Korean Air Logo
6:40 pm - 11:09 pmICN-STL
18h 29m1 stop
Korean Air Logo
8:53 am - 5:20 pmSTL-ICN
18h 27m1 stop
$713Korean Air
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Sun, Sep 21 - Tue, Oct 14
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
$760Air Canada
Find Deal
Wed, Sep 24 - Sat, Oct 18
 Logo
6:20 pm - 2:39 pmICN-STL
34h 19m1 stop
 Logo
3:57 pm - 5:55 pmSTL-ICN
35h 58m1 stop
Fri, Sep 19 - Sun, Oct 26
Korean Air Logo
6:40 pm - 11:09 pmICN-STL
18h 29m1 stop
Korean Air Logo
6:40 am - 4:50 pmSTL-ICN
20h 10m1 stop
$777Korean Air
Find Deal
Tue, Oct 14 - Thu, Oct 30
United Airlines Logo
11:30 am - 4:54 pmICN-STL
19h 24m1 stop
United Airlines Logo
5:29 pm - 4:40 amSTL-ICN
21h 11m1 stop
$794United Airlines
Find Deal
Sun, Sep 21 - Tue, Oct 14
Hawaiian Airlines Logo
8:35 pm - 2:39 pmICN-STL
32h 04m1 stop
Hawaiian Airlines Logo
3:57 pm - 6:35 pmSTL-ICN
36h 38m1 stop
$949Hawaiian Airlines
Find Deal
Booking Insights

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

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

How long is the flight to St. Louis?

The duration of your flight to St. Louis depends on your departure and arrival airports. Obviously, any flights that include a layover will also be longer. The most popular routes to St. Louis on KAYAK are from Incheon, which takes 18h 44m, Busan, which takes 34h 50m, and Seoul, which takes 39h 18m.

How many direct flights to St. Louis are there each day?

There are around 223 direct flights from within South Korea to St. Louis every day. Most flights depart in the morning, with 6:00 am the most common departure time and 53% of flights departing in the morning.

Good to know

Low seasonMarch
Cheapest flight$587
Best time to beat the crowds with an average 29% drop in price.
Most popular time to fly with an average 26% increase in price.
Flight from Seoul Incheon Airport to St. Louis

FAQs - booking St. Louis flights

  • How far is Lambert-St Louis Airport from central St. Louis?

    The city center of St. Louis is 13 miles from Lambert-St Louis Airport.

  • What is the name of St. Louis’s airport?

    When flying to St. Louis, you'll arrive at Lambert-St Louis Airport (STL). The airport is also known as Lambert Field, Lambert-St Louis, St. Louis Lambert, or St. Louis Lambert Intl.

  • What is the cheapest day to fly to St. Louis?

    Based on KAYAK data, the cheapest day to fly to St. Louis is Wednesday where round-trip tickets can be as cheap as $273. On the other hand, the most expensive day to fly is Monday, where round-trip prices are $526 on average.

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

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

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

  • What is the Hacker Fare option on flights 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 with another airline.

  • What is KAYAK's "flexible dates" feature and why should I care when looking for a flight 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 up to 3 days before/after your preferred dates. You can then pick the flights that suit you best.

  • What is the cheapest time of day to fly to St. Louis?

    The cheapest time of day to fly to St. Louis is generally at night, when round-trip flights cost $1,112 on average. The most expensive time of day to fly to St. Louis is generally in the morning, which is peak travel time and where the average cost of a ticket is $1,719.

  • How many direct flights to St. Louis are there each week?

    Each week there are around 1,560 direct flights from within South Korea to St. Louis. The most common day for departures is Sunday, with 17% of flights taking off on this day.

Top tips for finding cheap flights to St. Louis

  • Enter your preferred departure airport and travel dates into the search form above to unlock the latest St. Louis flight deals.

Reviews of the top airline flying from South Korea to St. Louis

 
See real verified KAYAK customer reviews for airlines flying to St. Louis. Airline scores are aggregated from all reviews left by passengers on KAYAK after flying with an airline from South Korea to St. Louis. KAYAK doesn’t show reviews that are older than 5 years. Learn how KAYAK collects reviews.
Need help choosing which airline to fly with 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 7985 reviews
7.9Entertainment
7.3Food
8.5Crew
8.2Boarding
7.9Comfort
Airline reviews

The flight attendants in SLC were rude. I arrived 40 minutes early to gate. Ticket said I needed check in for seat assignments and tried check in and attendants said they weren’t doing it. And proceeded to never call me to give me a ticket so when time to board I received the very last seat. Please relay to employees to do their job better..,

2.0 MediocreMichael, Aug 2025SLC - CDC
Read more Delta reviews

The flight attendants in SLC were rude. I arrived 40 minutes early to gate. Ticket said I needed check in for seat assignments and tried check in and attendants said they weren’t doing it. And proceeded to never call me to give me a ticket so when time to board I received the very last seat. Please relay to employees to do their job better..,

On this flight I felt the food offering was not as complete as on previous flights. The tomato salad was a bit off and there was nothing additional such a bread or butter. The breakfast was only one option, so you either ate what they had or ate nothing. The crew was efficient, but most seemed frustrated throughout the flight. The flight arrived early and was obstacle-free, so I’m overall quite happy, but the shine in the rest of the experience just wasn’t there.

Our seats were comfortable with adequate room to stretch out and recline. The food was tasty and served it just the right intervals. Our flight attendant was extra attentive and friendly. Flight arrived early. And the most turbulence. Overall that’s good and experience for an 11 hour flight as can be hoped for

The seats got pretty uncomfortable pretty fast. The armrests are bigger than on other planes, so I had less room in the actual seat. My butt hurt by the end of the flight. :/ comfort was the primary issue. The crew were fantastic!

I believe that a four-hour trip should have a meal. Delta had none.

Great flight with Delta! Boarding was quick and easy, the amenities were solid, and the plane was in great shape. The flight attendants had a fun, lively energy while staying professional. All in all, a smooth trip — even managed to catch up on some rest. Thanks, Delta!

I was uncomfortably cold on the plane. Other than that it was uneventful and therefore as enjoyable as a plane ride can be.

There was supposed to be a meal served, but there wasn’t and the major toilet was out of order

They made us board and then deboard due to mechanical issue which delayed the departure by almost 2 hours and we barely made our connecting flight. These quality checks should've been done before boarding not after.

Having to up charge for a seat assignment is not good. Delta can do better

Traveling to a place near St. Louis?

Book flights to St. Louis if you plan to visit one of these locations
O'Fallon
Wentzville
Farmington
Eureka
Litchfield
Grafton
Glencoe
Shrewsbury

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

Information on the airport you'll fly into in St. Louis

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