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Cheap flights from Missouri to Seoul from $448

This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from Missouri to Seoul departing on 9/3. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
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Find the cheapest flights from Missouri to Seoul

Cheap round-trip flights

Hawaiian Airlines Logo
6:00 am - 6:35 pmSTL-ICN
22h 35m1 stop
Hawaiian Airlines Logo
8:35 pm - 1:52 pmICN-STL
32h 17m1 stop
$851Hawaiian Airlines
Find Deal
sáb., sep. 20 - vie., feb. 6
Delta Logo
8:40 am - 5:20 pmSTL-ICN
18h 40m1 stop
Delta Logo
8:05 pm - 12:37 amICN-STL
19h 32m2 stops
$857Delta
Find Deal
vie., sep. 19 - mar., feb. 3
Alaska Airlines Logo
6:00 am - 6:35 pmSTL-ICN
22h 35m1 stop
Alaska Airlines Logo
8:35 pm - 11:59 pmICN-STL
17h 24m1 stop
$866Alaska Airlines
Find Deal
sáb., sep. 27 - dom., oct. 26
Japan Airlines Logo
1:43 pm - 10:55 amSTL-GMP
30h 12m2 stops
Japan Airlines Logo
7:50 am - 4:47 pmGMP-STL
23h 57m2 stops
$870Japan Airlines
Find Deal
mar., nov. 4 - mar., nov. 11
Japan Airlines Logo
7:59 pm - 10:45 amSTL-GMP
24h 46m2 stops
Japan Airlines Logo
7:50 am - 2:35 pmGMP-STL
21h 45m2 stops
$906Japan Airlines
Find Deal
dom., ago. 31 - lun., dic. 8
United Airlines Logo
1:40 pm - 4:20 amSTL-ICN
24h 40m2 stops
United Airlines Logo
5:00 pm - 11:39 amICN-STL
32h 39m2 stops
$950United Airlines
Find Deal
vie., oct. 24 - sáb., nov. 1
Logo
6:00 am - 6:35 pmSTL-ICN
22h 35m1 stop
Logo
6:55 pm - 9:07 amICN-STL
28h 12m2 stops
$951
Find Deal
sáb., sep. 27 - dom., oct. 26
Logo
3:28 pm - 6:35 pmMCI-ICN
37h 07m1 stop
Logo
6:55 pm - 3:54 pmICN-MCI
34h 59m2 stops
$1,077
Find Deal
mar., oct. 14 - vie., oct. 31
Alaska Airlines Logo
5:57 pm - 6:35 pmMCI-ICN
34h 38m3 stops
Alaska Airlines Logo
8:35 pm - 3:54 pmICN-MCI
33h 19m2 stops
$1,204Alaska Airlines
Find Deal
mar., oct. 14 - vie., oct. 31
United Airlines Logo
12:25 pm - 4:20 amSTL-ICN
25h 55m2 stops
United Airlines Logo
11:45 am - 9:54 pmICN-STL
24h 09m2 stops
$1,306United Airlines
Find Deal
sáb., sep. 27 - dom., oct. 26

Delta flights from Missouri to Seoul

Our best Delta deals on Missouri to Seoul flight tickets
Delta
Sep 19
STL8:40 amLambert-St Louis
18h 40m
1 stop
ICN5:20 pmIncheon Intl
Feb 3
ICN8:05 pmIncheon Intl
19h 32m
2 stops
STL12:37 amLambert-St Louis
$857
Find similar
Delta
Aug 31
STL7:35 amLambert-St Louis
17h 45m
1 stop
ICN3:20 pmIncheon Intl
Dec 8
ICN5:50 pmIncheon Intl
17h 59m
1 stop
STL8:49 pmLambert-St Louis
$866
Find similar
Delta
Aug 31
STL6:00 amLambert-St Louis
20h 30m
2 stops
ICN4:30 pmIncheon Intl
Sep 3
ICN10:15 amIncheon Intl
25h 47m
2 stops
STL10:02 pmLambert-St Louis
$871
Find similar

Alaska Airlines flights from Missouri to Seoul

Our best Alaska Airlines deals on Missouri to Seoul flight tickets
Alaska Airlines
Sep 27
STL6:00 amLambert-St Louis
22h 35m
1 stop
ICN6:35 pmIncheon Intl
Oct 26
ICN8:35 pmIncheon Intl
17h 24m
1 stop
STL11:59 pmLambert-St Louis
$866
Find similar
Alaska Airlines
Oct 14
MCI5:57 pmKansas City
34h 38m
3 stops
ICN6:35 pmIncheon Intl
Oct 31
ICN8:35 pmIncheon Intl
33h 19m
2 stops
MCI3:54 pmKansas City
$1,204
Find similar
Alaska Airlines
Oct 18
MCI3:28 pmKansas City
37h 07m
1 stop
ICN6:35 pmIncheon Intl
Nov 1
ICN8:35 pmIncheon Intl
32h 27m
1 stop
MCI3:02 pmKansas City
$1,252
Find similar

momondo Fare Finder

 
Customize your flight search to find flights from Missouri to Seoul that fit within your specific budget. Explore options based on user searches and filter the results based on your desired price range. Find flights that match your budget for a cost-effective journey. Over the last 7 days, momondo users made 832,500 searches. Data last updated agosto 18, 2025.
Use the filters below to find and compare flights from Missouri to Seoul that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

St. LouisIncheon

STL - ICN

STLICN

Lambert-St Louis

sáb. 9/20

6:00 am-6:35 pm

1 stop22h 35m

Incheon Intl

vie. 2/6

8:35 pm-1:52 pm

1 stop32h 17m

$851

St. LouisIncheon

STL - ICN

STLICN

Lambert-St Louis

vie. 9/19

8:40 am-5:20 pm

1 stop18h 40m

Incheon Intl

mar. 2/3

8:05 pm-12:37 am

2 stops19h 32m

$857

St. LouisIncheon

STL - ICN

STLICN

Lambert-St Louis

sáb. 9/27

6:00 am-6:35 pm

1 stop22h 35m

Incheon Intl

dom. 10/26

8:35 pm-11:59 pm

1 stop17h 24m

$866

St. LouisSeoul

STL - GMP

STLGMP

Lambert-St Louis

mar. 11/4

1:43 pm-10:55 am

2 stops30h 12m

Seoul Gimpo Intl

mar. 11/11

7:50 am-4:47 pm

2 stops23h 57m

$870

St. LouisSeoul

STL - GMP

STLGMP

Lambert-St Louis

dom. 8/31

7:59 pm-10:45 am

2 stops24h 46m

Seoul Gimpo Intl

lun. 12/8

7:50 am-2:35 pm

2 stops21h 45m

$906

St. LouisIncheon

STL - ICN

STLICN

Lambert-St Louis

vie. 10/24

1:40 pm-4:20 am

2 stops24h 40m

Incheon Intl

sáb. 11/1

5:00 pm-11:39 am

2 stops32h 39m

$950

St. LouisIncheon

STL - ICN

STLICN

Lambert-St Louis

sáb. 9/27

6:00 am-6:35 pm

1 stop22h 35m

Incheon Intl

dom. 10/26

6:55 pm-9:07 am

2 stops28h 12m

$951

Kansas CityIncheon

MCI - ICN

MCIICN

Kansas City

mar. 10/14

3:28 pm-6:35 pm

1 stop37h 07m

Incheon Intl

vie. 10/31

6:55 pm-3:54 pm

2 stops34h 59m

$1,077

Kansas CityIncheon

MCI - ICN

MCIICN

Kansas City

mar. 10/14

5:57 pm-6:35 pm

3 stops34h 38m

Incheon Intl

vie. 10/31

8:35 pm-3:54 pm

2 stops33h 19m

$1,204

St. LouisIncheon

STL - ICN

STLICN

Lambert-St Louis

sáb. 9/27

12:25 pm-4:20 am

2 stops25h 55m

Incheon Intl

dom. 10/26

11:45 am-9:54 pm

2 stops24h 09m

$1,306

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 20 resultsSorted by cheapest first
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See travel insights to Seoul from

How to get the cheapest flight ticket from Missouri to Seoul

Look no further. We've gone through all the searches for this route on momondo so you have the important information and insights to find the cheapest flight ticket for your trip

What is the cheapest month to fly to Seoul?

The month of September is another great option to travel to Seoul, with average flight prices from Missouri averaging around $911.

What is the cheapest day to depart on your flight to Seoul?

According to our data, Tuesday is the cheapest day to fly to Seoul from Missouri. The lowest ticket price found for a Tuesday departure recently was $1,367. Keep in mind that prices can always vary depending on your route and whether or not you are flying domestic or international. The most expensive day to fly to Seoul is Sunday, with ticket prices averaging around $1,713.

What is the cheapest time of day to depart on your flight to Seoul?

Flying to Seoul from Missouri in the afternoon is the least expensive time of day to depart. momondo users have found prices as low as $1,290 when looking at flights departing in the afternoon. In the evening is when there is more demand to fly to Seoul, so prices are often more expensive at around $1,673 per ticket.

How far in advance should I book a flight to Seoul?

You are more likely to see cheaper flights to Seoul from Missouri when booking weeks ahead of your departure date. In general, you can expect to find flights to Seoul for around $1,235 when searching weeks out. However, flight prices might be lower outside of this timeframe. For example, people recently found flights to Seoul from Missouri for as low as $1,068 on momondo.

Can stopping save me money on Missouri to Seoul flights?

You could potentially save up to 11% on your flight if you consider stops on a Missouri to Seoul flight.

Cheap Missouri to Seoul flight deals and tips

Find info about flight duration, direct flights, and airports for your flight from Missouri to Seoul

Best Price Found

$448

Fastest flight time

18h 14m

Direct flights

None

Airports in Seoul

2 airports
The best one-way flight to Seoul from Missouri in the past 72 hours is $448. The best round-trip flight deal from Missouri to Seoul found on momondo in the last 72 hours is $851.
The fastest flight from Missouri to Seoul takes 18h 14m
There are no direct flights from Missouri to Seoul. Popular non-direct routes for this connection are Lambert-St Louis Airport - Seoul Gimpo Intl Airport, Springfield-Branson Airport - Incheon Intl Airport and Lambert-St Louis Airport - Incheon Intl Airport.
There are 2 airports near Seoul: Incheon Intl (ICN), Seoul Gimpo Intl (GMP)
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  • When did momondo last update prices for flights from Missouri to Seoul?

    Prices for flights from Missouri to Seoul refresh daily.

  • How many operators does momondo search for flights from Missouri to Seoul?

  • How old do you have to be to fly from Missouri to Seoul?

    Although the minimum age for a child to fly alone is five, airlines that offer an unaccompanied minor (UMNR) service may have their own age limits, which could be impacted by factors such as flight length, timing, and layovers. It is recommended that you verify with the airline you are booking with for travel from Missouri to Seoul.

  • What documentation or ID do you need to fly to Seoul?

    The travel and health documents required for your trip to Seoul can vary based on your itinerary and personal situation. As a rule, consider having multiple documents such as a national ID card or driver’s license, and a passport valid for six-months after you plan to arrive at Seoul. We always recommend checking with your airline or a trusted third party such as IATA to get advice.

Best airlines flying from Missouri to Seoul

Compare and see reviews for airlines that fly from Missouri to Seoul with momondo
Airline
Rating
Free Cancellation
Price
Air CanadaPriceFrom $799Free CancellationRating
7.1
9,992 reviews
Search Air Canada flights
United AirlinesPriceFrom $877Free CancellationRating
7.4
8,925 reviews
Search United Airlines flights
DeltaPriceFrom $877Free CancellationRating
8.0
7,981 reviews
Search Delta flights
American AirlinesPriceFrom $976Free CancellationRating
7.2
10,000 reviews
Search American Airlines flights
Korean AirPriceFrom $1,046Free CancellationRating
8.4
1,131 reviews
Search Korean Air flights

Why use momondo?

Why should I use momondo to find a flight deal from Missouri to Seoul?

momondo collates all your flight options in one place and lets you filter them to find the perfect flight from Missouri to Seoul. momondo saves you time and could save you money on your trip.

Can I find flights from Missouri to Seoul with flexible booking policies on momondo?

Yes. All flights to Seoul from Missouri on momondo can be compared and filtered by various policies on offer, including flexible booking.

How can momondo help me find flights from Missouri to Seoul?

Once you have performed a search in the form on the page, momondo provides useful filters and insights. We can show you the cheapest days and times to fly as well as help filter your options to help you make an informed choice when booking flights to Seoul from Missouri.

I’m not ready to book a flight from Missouri to Seoul right now. Can momondo alert me if prices change?

Of course. momondo tracks the price of Missouri to Seoul flights. All you need is a valid email address and we will do the rest; it is that quick and easy.

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Find better results for your trip to South Korea

Fly into one of these airports located in Seoul

Airports listed have a maximum distance of 30.3 mi from Seoul
Seoul Gimpo Intl Airport
Incheon Intl Airport