STL - ICN

$510 Find Cheap Flights from St. Louis to Incheon - Compare and Save

1 adult
1 adult, Economy, 0 bags

Save 21% or more on flights. Compare deals from all over the web.

Never overpay with our price tracking tools.

Filter searches by price, airline and more to find your best flights.

Everything you should know

Cheapest round-trip
$1,091
Typical prices: $916-$1,416
Multiple Airlines
Thu 1/11Fri 3/30
STL - ICN • 2 stops
Cheapest one-way
$510
Typical prices: $534-$895
Multiple Airlines
Fri 11/2
STL - ICN • 3 stops
Nonstop flights
Not available
There are currently no direct flights between St. Louis and Incheon Intl Airport. You'll need to take a connecting flight to reach the destination.
Insights
Insights
When to book
25 weeks
in advance
Our data shows that travelers who book at least 25 weeks in advance save around 30% compared to booking last minute.
Insights
Insights
When to travel
December
Cheapest • 29% price drop
May
Most popular
Good to know
+1
Good to know
+1
Top layover airports
Detroit Metropolitan Wayne County (DTW)
Cheapest • Avg $846 (round-trip)
Chicago O'Hare Intl (ORD)
Shortest trip • 17h 17m (one-way)
Insights
Insights
Start a new search
KAYAK searches 100s of sites at once to find you the best travel deals.
We hope you love your trip to Incheon Intl Airport!
Flight Deals
Booking Insights
Flight Deals

Cheap Flights from St. Louis to Incheon (STL-ICN)

 
Discover the best prices for you by selecting your travel dates on KAYAK.

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

Mon, Jan 11 - Tue, Mar 30
Multiple Airlines Logo
5:18 pm - 1:50 pmSTL  Lambert-St Louis-ICN Incheon Intl
29h 32m2 stops Dallas/Fort Worth Hong Kong Intl
Multiple Airlines Logo
8:00 am - 11:44 pmICN  Incheon Intl-STL Lambert-St Louis
29h 44m2 stops Hong Kong Intl Seattle/Tacoma Intl
$1,091Multiple Airlines
Mon, Oct 26 - Wed, Nov 25
Multiple Airlines Logo
6:04 am - 12:40 amSTL  Lambert-St Louis-ICN Incheon Intl
28h 36m2 stops Los Angeles Hong Kong Intl
Multiple Airlines Logo
7:35 pm - 4:34 pmICN  Incheon Intl-STL Lambert-St Louis
35h 59m2 stops Hong Kong Intl Chicago O'Hare Intl
$1,091Multiple Airlines
Tue, Oct 27 - Tue, Nov 3
Air Canada Logo
4:05 pm - 4:10 pmSTL  Lambert-St Louis-ICN Incheon Intl
34h 05m2 stops Toronto Pearson Intl Vancouver Intl
Air Canada Logo
8:10 pm - 3:26 pmICN  Incheon Intl-STL Lambert-St Louis
34h 16m1 stop Toronto Pearson Intl
$1,140Air Canada
Wed, Oct 28 - Wed, Nov 4
Air Canada Logo
4:05 pm - 5:25 pmSTL  Lambert-St Louis-ICN Incheon Intl
35h 20m1 stop Toronto Pearson Intl
Air Canada Logo
6:55 pm - 3:26 pmICN  Incheon Intl-STL Lambert-St Louis
35h 31m2 stops Vancouver Intl Toronto Pearson Intl
$1,140Air Canada
Tue, Oct 27 - Tue, Nov 3
Delta Logo
6:47 am - 4:50 pmSTL  Lambert-St Louis-ICN Incheon Intl
20h 03m1 stop Detroit Metropolitan Wayne County
Delta Logo
9:35 am - 8:51 pmICN  Incheon Intl-STL Lambert-St Louis
26h 16m1 stop Detroit Metropolitan Wayne County
$1,196Delta
Wed, Oct 21 - Sun, Nov 1
Delta Logo
6:00 am - 2:10 pmSTL  Lambert-St Louis-ICN Incheon Intl
18h 10m1 stop Atlanta Hartsfield-Jackson
Delta Logo
6:40 pm - 9:09 pmICN  Incheon Intl-STL Lambert-St Louis
17h 29m1 stop Salt Lake City
$1,196Delta
Mon, Oct 5 - Wed, Nov 4
American Airlines Logo
5:40 am - 3:45 pmSTL  Lambert-St Louis-ICN Incheon Intl
20h 05m1 stop Dallas/Fort Worth
American Airlines Logo
6:50 pm - 11:33 pmICN  Incheon Intl-STL Lambert-St Louis
19h 43m1 stop Dallas/Fort Worth
$1,196American Airlines
Thu, Oct 8 - Wed, Oct 28
American Airlines Logo
5:40 am - 3:45 pmSTL  Lambert-St Louis-ICN Incheon Intl
20h 05m1 stop Dallas/Fort Worth
American Airlines Logo
6:50 pm - 10:00 pmICN  Incheon Intl-STL Lambert-St Louis
17h 10m1 stop Dallas/Fort Worth
$1,196American Airlines
Mon, Oct 5 - Wed, Nov 4
United Airlines Logo
7:08 am - 3:00 pmSTL  Lambert-St Louis-ICN Incheon Intl
17h 52m1 stop San Francisco
United Airlines Logo
12:45 pm - 6:38 pmICN  Incheon Intl-STL Lambert-St Louis
20h 53m2 stops San Francisco Houston George Bush Intcntl
$1,201United Airlines
Tue, Mar 9 - Tue, Mar 23
United Airlines Logo
1:08 pm - 5:40 amSTL  Lambert-St Louis-ICN Incheon Intl
25h 32m3 stops Chicago O'Hare Intl Houston George Bush Intcntl San Francisco
United Airlines Logo
11:45 am - 4:26 pmICN  Incheon Intl-STL Lambert-St Louis
18h 41m2 stops San Francisco Denver Intl
$1,201United Airlines
Booking Insights

Price, demand and travel trends for St. Louis to Incheon Intl Airport flights

Use KAYAK data on prices, travel dates, airlines and seasonal trends to compare options and book flights from St. Louis to Incheon Intl Airport with more confidence.

What's the cheapest day of the week to fly from St. Louis to Incheon Intl Airport?

Wednesday is the cheapest day of the week to fly from St. Louis to Incheon Intl Airport, it is 23% cheaper than the average day. Saturday is the most expensive day with flight prices 9% higher than average. Based on deals found by KAYAK users in the last 12 months.

What is the cheapest month to fly from St. Louis to Incheon Intl Airport?

  • December is the cheapest month to fly from St. Louis to Incheon Intl Airport at $846 round-trip.
  • July ($1,488) and August ($1,420) are the most expensive months.
  • The price difference between flying in the cheapest and most expensive months is 75% on average.
This is based on KAYAK aggregated and averaged internal data over the past 12 months.

When are prices from St. Louis to Incheon Intl Airport the cheapest?

Flights from St. Louis to Incheon Intl Airport are cheapest 25 weeks before departure. Booking in this window typically costs about 30% less than the average last-minute fare (within 2 weeks of the flight), based on KAYAK data.

Find deals

Key details for St. Louis to Incheon Intl Airport flights

Low season

January

Cheapest flight

$510
Best time to beat the crowds but there is an average 10% increase in price.
Most popular time to fly with an average 7% increase in price.
Flight from St. Louis to Incheon Intl Airport

When to book flights from St. Louis to Incheon

Are your dates flexible? Find out the best times to travel from St. Louis to Incheon based on our flight data from the last year. Discover the cheapest month and even day to fly.
Estimated round-trip price

Your St. Louis to Incheon Intl Airport flight questions, answered

Find helpful route details based on KAYAK data, including flight times, airports, airlines and booking questions.

  • Which airports can I use when flying from St. Louis to Incheon Intl Airport?

    Flights from St. Louis to Incheon Intl Airport usually depart from Lambert-St Louis (STL) and arrive at Incheon Intl (ICN).

  • What cabin classes can I book on flights from St. Louis to Incheon Intl Airport?

    Three cabin classes are available on flights from St. Louis to Incheon Intl Airport:

    • Economy Class
    • Business Class
    • First Class

  • Which airports do connecting flights from St. Louis to Incheon Intl Airport pass through?

    One-stop flights from St. Louis to Incheon Intl Airport most commonly connect through:

    • Seattle/Tacoma Intl (SEA) - 47% of one-stop connections
    • Atlanta Hartsfield-Jackson (ATL) - 15% of one-stop connections
    • Dallas/Fort Worth (DFW) - 11% of one-stop connections
    • Minneapolis St Paul (MSP) - 11% of one-stop connections

    Seattle/Tacoma Intl (SEA) handles the largest share of one-stop connections on this route.

  • Can I save money by using flexible dates for flights from St. Louis to Incheon Intl Airport?

    Yes. Being flexible with your travel dates can save you up to 30% on the St. Louis to Incheon Intl Airport route. Wednesday is the cheapest departure day at $916 round-trip on average, while Saturday is the most expensive at $1,293, a difference of $377. KAYAK's flexible dates feature shows options up to 3 days before and after your selected dates, making it easier to compare nearby fares.

  • What popular places can I visit in Incheon Intl Airport?

    Some of the most popular sights in Incheon Intl Airport are Unseo Station, Incheon International Airport Terminal 1 Station and Songdo Convensia. These are among the most viewed places in Incheon Intl Airport on KAYAK.

  • How expensive are last-minute St. Louis to Incheon Intl Airport flights?

    Last-minute fares on this route - booked within 2 weeks of departure - run 10% above the route average of $1,186. Book 25 weeks before departure for the lowest fares.

  • How long is a flight from St. Louis to Incheon Intl Airport?

    A nonstop flight from St. Louis to Incheon Intl Airport takes 0h 00m, covering 6,670 miles.

  • Do I need a passport to fly from St. Louis to Incheon Intl Airport?

    Yes, a valid passport is required for this international route. Many destinations require at least six months of validity beyond your travel dates. Check your passport expiry well before booking.

  • Have flight prices from St. Louis to Incheon Intl Airport changed much recently?

    Yes. Based on fares seen in the past 5 days, round-trip prices on this route showed a wide range, from about $1,091 to $8,587. That means the highest observed fare was about 8x higher than the lowest one.

  • How are flight prices from St. Louis to Incheon Intl Airport looking right now?

    One-way fares from St. Louis to Incheon Intl Airport are currently higher than usual. Average one-way flight prices are about $695, which is 7% above the typical average for this route.

  • How much time can I save by choosing a different layover airport from St. Louis to Incheon Intl Airport?

    Flying via Chicago O'Hare Intl (ORD) gives the shortest average 1-stop total travel time at 17h 17m, compared with 17h 55m via Minneapolis St Paul (MSP) and 18h 34m via Dallas/Fort Worth (DFW).

  • What is the time difference between St. Louis and Incheon Intl Airport?

    Incheon Intl Airport is 14 hours ahead of St. Louis (Korean Time vs Central Time). Plan for the time shift when scheduling connections or first-day activities.

  • What car rental options are available at Incheon Intl Airport (ICN)?

    Incheon Intl Airport (ICN) hosts 5 major car rental companies, with daily rates starting from around $12 for economy cars. Top options include:
    • WECAR
    • Wheego
    • Yesaway
    • Alamo
    • Enterprise Rent-A-Car

  • How much should I expect to pay for a St. Louis to Incheon Intl Airport flight?

    Round-trip flights from St. Louis to Incheon Intl Airport range from $916 to $1,416, with an average of $1,186 over the past 12 months. Anything below $916 counts as a good deal.

Your guide to booking St. Louis to Incheon Intl Airport flights

Get tips on when to book, when to fly and what to know before your trip.
  • If your dates can be flexible, aim for a Wednesday departure instead of Saturday. On this route, Wednesday flights average $916 - about $377 less than Saturday (29% savings) based on the last 12 months.
  • For the best chance at a low fare, aim to book around 25 weeks before you fly. On this route, that window historically saves about 30% versus last-minute pricing (KAYAK booking data, last 12 months).
  • If you can choose when to travel, plan your St. Louis to Incheon Intl Airport trip for December. Fares historically average $846 round-trip in that month - typically $642 less than the most expensive month, which is July (based on the last 12 months).
  • If you're arriving late at night and need somewhere to stay, check out these hotels close to Incheon Intl Airport.
    - Grand Hyatt Incheon
    - Best Western Premier Incheon Airport
    - Hotel Ora Incheon

More options for your flight from St. Louis to Incheon

Complete your trip to Incheon with a hotel stay or car rental

Car rentals in Seoul
Hotels in Seoul