How does KAYAK find such low prices on flights from St. Louis to South Korea?

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 St. Louis to South Korea.

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

KAYAK’s flight Price Forecast tool uses historical data to determine whether the price for a flight from St. Louis to South Korea 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 St. Louis to South Korea?

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 from St. Louis to South Korea 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 from St. Louis to South Korea?

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 from St. Louis to South Korea up to 3 days before/after your preferred dates. You can then pick the flights that suit you best.

Which airlines provide the cheapest flights from St. Louis to South Korea?

In the past 5 days, the cheapest round-trip tickets from St. Louis to South Korea were found on Delta ($1,110) and Japan Airlines ($1,332).

Which airlines provide the cheapest flights from St. Louis to South Korea?

In the past 5 days, the cheapest round-trip tickets from St. Louis to South Korea were found on Delta ($1,110) and Japan Airlines ($1,332).

How long does a flight from St. Louis to South Korea take?

The duration of a flight to South Korea depends on your arrival airport. The shortest routes to South Korea from St. Louis are to Seoul , which takes 18h 34m , Seoul , which takes 20h 14m, and Busan , which takes 24h 45m.

How long does a flight from St. Louis to South Korea take?

The duration of a flight to South Korea depends on your arrival airport. The shortest routes to South Korea from St. Louis are to Seoul , which takes 18h 34m , Seoul , which takes 20h 14m, and Busan , which takes 24h 45m.

$640 CHEAP FLIGHTS from St. Louis to South Korea

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Flight Deals

Book Cheap St. Louis to South Korea Plane Tickets

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

Round-trip

One-way

Last minute

Recent round-trip flight deals from St. Louis to South Korea

Fri, Oct 16 - Sun, Oct 25

2:00 pm - 6:45 pm

STL

ICN

38h 45m

2 stops

8:45 pm - 6:15 pm

ICN

STL

35h 30m

2 stops

$1,095WestJet

Fri, Oct 16 - Sun, Oct 25

2:00 pm - 6:45 pm

STL

ICN

38h 45m

2 stops

8:45 pm - 6:15 pm

ICN

STL

35h 30m

2 stops

$1,102WestJet

Mon, Oct 5 - Wed, Nov 4

12:00 pm - 4:00 am

STL

ICN

26h 00m

1 stop

6:35 pm - 12:34 am

ICN

STL

20h 59m

1 stop

$1,106Delta

Mon, Oct 5 - Wed, Nov 4

6:15 am - 4:50 pm

STL

ICN

20h 35m

2 stops

6:45 pm - 12:34 am

ICN

STL

20h 49m

2 stops

$1,110Delta

Mon, Sep 21 - Sat, Oct 17

2:30 pm - 6:45 pm

STL

ICN

62h 15m

2 stops

8:45 pm - 11:48 pm

ICN

STL

41h 03m

2 stops

$1,139WestJet

Sun, Sep 13 - Sun, Sep 27

3:54 pm - 6:45 pm

STL

ICN

36h 51m

2 stops

8:45 pm - 3:54 pm

ICN

STL

33h 09m

2 stops

$1,142WestJet

Tue, Aug 18 - Tue, Aug 25

9:32 am - 9:15 pm

STL

GMP

21h 43m

2 stops

8:00 am - 10:59 pm

GMP

STL

28h 59m

2 stops

$1,332Japan Airlines

Sun, Aug 30 - Thu, Sep 3

6:00 am - 5:55 pm

STL

GMP

45h 55m

2 stops

8:00 am - 4:20 pm

GMP

STL

22h 20m

2 stops

$1,362Japan Airlines

Tue, Aug 18 - Tue, Aug 25

6:00 am - 9:15 pm

STL

GMP

25h 15m

2 stops

12:05 pm - 10:59 pm

GMP

STL

24h 54m

2 stops

$1,466Multiple Airlines

Thu, Sep 10 - Mon, Sep 14

6:40 am - 7:55 pm

STL

TAE

23h 15m

2 stops

7:55 am - 7:58 pm

TAE

STL

26h 03m

2 stops

$1,765Korean Air

Booking Insights

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

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

Prices

Airlines

What is the cheapest month to fly from St. Louis to South Korea?

The cheapest month for flights from St. Louis to South Korea is March, when tickets cost $745 (return) on average. On the other hand, the most expensive months are June and August, when the average cost of round-trip tickets is $1,083 and $866 respectively.

Find deals

Low season	December
High season	May
Cheapest flight	$640

Best time to beat the crowds with an average 28% drop in price.

Most popular time to fly with an average 21% increase in price.

Flight from St. Louis to Seoul Incheon Airport

How does KAYAK find such low prices on flights from St. Louis to South Korea?
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 St. Louis to South Korea.
How does KAYAK's flight Price Forecast tool help me choose the right time to buy my flight ticket from St. Louis to South Korea?
KAYAK’s flight Price Forecast tool uses historical data to determine whether the price for a flight from St. Louis to South Korea 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 St. Louis to South Korea?
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 from St. Louis to South Korea 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 from St. Louis to South Korea?
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 from St. Louis to South Korea up to 3 days before/after your preferred dates. You can then pick the flights that suit you best.

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

Airports

Cabin class

Complete your trip

Flights to other cities

Origins

Popular routes

Return flight deals

Information on your arrival and departure airports

St. Louis (STL)

$640 Find Cheap Flights from St. Louis to South Korea - Compare and Save

Book Cheap St. Louis to South Korea Plane Tickets

Recent round-trip flight deals from St. Louis to South Korea

Recent one-way flight deals from St. Louis to South Korea

Recent last minute flight deals from St. Louis to South Korea

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

What is the cheapest month to fly from St. Louis to South Korea?

Which airlines provide the cheapest flights from St. Louis to South Korea?

How long does a flight from St. Louis to South Korea take?

Good to know

FAQs - booking South Korea flights

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

Information on your arrival and departure airports

Cabin class types available on flights to South Korea

Complete your trip to South Korea with a hotel stay or car rental

Flights to other popular destinations

Flights from other airports in St. Louis to South Korea

Flights from St. Louis to popular cities in South Korea

Find deals for your return flight