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Cheap flights from Seoul to Southeast Asia from $152

This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from Seoul to Southeast Asia departing on 21/2. 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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Cheap return flights

Enter your travel dates to find the best prices.
T'way Air Logo
19:50 - 00:10
ICN
-
BKK
6h 20mdirect
T'way Air Logo
01:30 - 09:00
BKK
-
ICN
5h 30mdirect
$240T'way Air
Sat, 7 Feb - Sat, 14 Feb
T'way Air Logo
19:50 - 00:10
ICN
-
BKK
6h 20mdirect
T'way Air Logo
01:30 - 09:00
BKK
-
ICN
5h 30mdirect
$249T'way Air
Sat, 7 Feb - Sat, 14 Feb
T'way Air Logo
19:50 - 00:10
ICN
-
BKK
6h 20mdirect
T'way Air Logo
01:30 - 09:00
BKK
-
ICN
5h 30mdirect
$252T'way Air
Sat, 7 Feb - Sat, 14 Feb
T'way Air Logo
19:50 - 00:10
ICN
-
BKK
6h 20mdirect
T'way Air Logo
01:30 - 09:00
BKK
-
ICN
5h 30mdirect
$269T'way Air
Thu, 29 Jan - Tue, 10 Feb
Air Busan Logo
16:50 - 21:20
ICN
-
BKK
6h 30mdirect
Air Busan Logo
22:20 - 06:05
BKK
-
ICN
5h 45mdirect
$281Air Busan
Thu, 5 Feb - Thu, 12 Feb
Cathay Pacific Logo
19:35 - 15:20
ICN
-
DPS
20h 45m
1 stop
Cathay Pacific Logo
16:20 - 13:55
DPS
-
ICN
20h 35m
1 stop
$436Cathay Pacific
Thu, 12 Mar - Wed, 25 Mar
Vietnam Airlines Logo
10:35 - 15:00
ICN
-
DPS
29h 25m
1 stop
Vietnam Airlines Logo
16:00 - 16:25
DPS
-
ICN
23h 25m
1 stop
$445Vietnam Airlines
Wed, 25 Mar - Sat, 4 Apr
Vietnam Airlines Logo
10:35 - 15:00
ICN
-
DPS
29h 25m
1 stop
Vietnam Airlines Logo
16:00 - 16:25
DPS
-
ICN
23h 25m
1 stop
$447Vietnam Airlines
Wed, 25 Mar - Sat, 4 Apr
Malaysia Airlines Logo
11:05 - 18:25
ICN
-
DPS
32h 20m
1 stop
Malaysia Airlines Logo
19:15 - 20:55
DPS
-
ICN
24h 40m
1 stop
$454Malaysia Airlines
Sat, 28 Feb - Fri, 13 Mar
Malaysia Airlines Logo
00:10 - 15:30
ICN
-
DPS
16h 20m
1 stop
Malaysia Airlines Logo
19:20 - 21:15
DPS
-
ICN
24h 55m
1 stop
$481Malaysia Airlines
Fri, 8 May - Wed, 20 May

T'way Air flights from Seoul to Southeast Asia

Our best T'way Air deals on Seoul to Southeast Asia flight tickets
T'way Air
7 Feb
ICN19:50Incheon Intl
6h 20m
BKK00:10Bangkok Suvarnabhumi
14 Feb
BKK01:30Bangkok Suvarnabhumi
5h 30m
ICN09:00Incheon Intl
$240
T'way Air
7 Feb
ICN19:50Incheon Intl
6h 20m
BKK00:10Bangkok Suvarnabhumi
14 Feb
BKK01:30Bangkok Suvarnabhumi
5h 30m
ICN09:00Incheon Intl
$249
T'way Air
26 Jan
ICN19:50Incheon Intl
6h 20m
BKK00:10Bangkok Suvarnabhumi
27 Jan
BKK01:30Bangkok Suvarnabhumi
5h 30m
ICN09:00Incheon Intl
$251

Vietnam Airlines flights from Seoul to Southeast Asia

Our best Vietnam Airlines deals on Seoul to Southeast Asia flight tickets
Vietnam Airlines
17 May
ICN18:05Incheon Intl
18h 45m
1 stop
BKK10:50Bangkok Suvarnabhumi
21 May
BKK18:05Bangkok Suvarnabhumi
9h 55m
1 stop
ICN06:00Incheon Intl
$284
Vietnam Airlines
17 May
ICN10:05Incheon Intl
13h 00m
1 stop
BKK21:05Bangkok Suvarnabhumi
21 May
BKK11:55Bangkok Suvarnabhumi
15h 55m
1 stop
ICN05:50Incheon Intl
$285
Vietnam Airlines
21 June
ICN10:05Incheon Intl
13h 00m
1 stop
BKK21:05Bangkok Suvarnabhumi
26 June
BKK15:55Bangkok Suvarnabhumi
11h 55m
1 stop
ICN05:50Incheon Intl
$287

momondo Fare Finder

 
Customise your flight search to find flights from Seoul to Southeast Asia 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 78,305 searches. Data last updated 17 January 2026.
Use the filters below to find and compare flights from Seoul to Southeast Asia that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

IncheonBangkok

ICN - BKK

ICNBKK

Incheon Intl

Sat 7/2

19:50-00:10

Nonstop6h 20m

Bangkok Suvarnabhumi

Sat 14/2

01:30-09:00

Nonstop5h 30m

$240

IncheonBangkok

ICN - BKK

ICNBKK

Incheon Intl

Sat 7/2

19:50-00:10

Nonstop6h 20m

Bangkok Suvarnabhumi

Sat 14/2

01:30-09:00

Nonstop5h 30m

$249

IncheonBangkok

ICN - BKK

ICNBKK

Incheon Intl

Sat 7/2

19:50-00:10

Nonstop6h 20m

Bangkok Suvarnabhumi

Sat 14/2

01:30-09:00

Nonstop5h 30m

$252

IncheonBangkok

ICN - BKK

ICNBKK

Incheon Intl

Thu 29/1

19:50-00:10

Nonstop6h 20m

Bangkok Suvarnabhumi

Tue 10/2

01:30-09:00

Nonstop5h 30m

$269

IncheonBangkok

ICN - BKK

ICNBKK

Incheon Intl

Thu 5/2

16:50-21:20

Nonstop6h 30m

Bangkok Suvarnabhumi

Thu 12/2

22:20-06:05

Nonstop5h 45m

$281

IncheonDenpasar

ICN - DPS

ICNDPS

Incheon Intl

Thu 12/3

19:35-15:20

1 stop20h 45m

Denpasar Bali Ngurah Rai

Wed 25/3

16:20-13:55

1 stop20h 35m

$436

IncheonDenpasar

ICN - DPS

ICNDPS

Incheon Intl

Wed 25/3

10:35-15:00

1 stop29h 25m

Denpasar Bali Ngurah Rai

Sat 4/4

16:00-16:25

1 stop23h 25m

$445

IncheonDenpasar

ICN - DPS

ICNDPS

Incheon Intl

Wed 25/3

10:35-15:00

1 stop29h 25m

Denpasar Bali Ngurah Rai

Sat 4/4

16:00-16:25

1 stop23h 25m

$447

IncheonDenpasar

ICN - DPS

ICNDPS

Incheon Intl

Sat 28/2

11:05-18:25

1 stop32h 20m

Denpasar Bali Ngurah Rai

Fri 13/3

19:15-20:55

1 stop24h 40m

$454

IncheonDenpasar

ICN - DPS

ICNDPS

Incheon Intl

Fri 8/5

00:10-15:30

1 stop16h 20m

Denpasar Bali Ngurah Rai

Wed 20/5

19:20-21:15

1 stop24h 55m

$481

Flights are sorted by cheapest return flights first.

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

How to get the cheapest flight ticket from Seoul to Southeast Asia

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 Southeast Asia?

The cheapest month to fly to Southeast Asia from Seoul is in May. Flight prices, which tend to average around $556, are often lower during this time because this is during the off-season. The month of July is another great option to travel to Southeast Asia, with average flight prices from Seoul averaging around $629.

What is the cheapest day to depart on your flight to Southeast Asia?

Our data shows that Monday is the least expensive day to fly to Southeast Asia. Tickets to fly out on this day can be as low as $722. On the other hand, Sunday is the most expensive day to depart from Seoul because it is more convenient for both business and leisure travellers. As a result, prices tend to be around $807.

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

In the afternoon is the cheapest time of day to fly from Seoul to Southeast Asia when you can find flight prices for as low as $722. Flying to Southeast Asia in the afternoon is an ideal time because this is during off-peak travel hours. Flights in the morning are often more expensive, with an average ticket price of $803.

What is the cheapest Seoul to Southeast Asia flight route?

Fly from Incheon Intl to Bangkok Suvarnabhumi for the best Seoul - Southeast Asia flight prices

How far in advance should I book a flight to Southeast Asia?

You are more likely to see cheaper flights to Southeast Asia from Seoul when booking weeks ahead of your departure date. In general, you can expect to find flights to Southeast Asia for around $665 when searching weeks before you fly. However, flight prices might be lower outside of this timeframe. For example, people recently found flights to Southeast Asia from Seoul for as low as $470 on momondo.

What cabin class options are available on Seoul to Southeast Asia flights?

There are 3 cabin classes available to choose from on Seoul to Southeast Asia flights. Cabin price and availability will vary by airline so perform a search above to find the right deals for you.

Can stopping save me money on Seoul to Southeast Asia flights?

No. A direct flight is the cheapest option for a flight between Seoul to Southeast Asia.

Cheap Seoul to Southeast Asia flight deals and tips

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

Fastest flight time

5h 55m

Direct flights

Every day

Airports in Southeast Asia

295 airports
The fastest flight from Seoul to Southeast Asia takes 5h 55m
Direct flights go from Seoul to Southeast Asia every day.
There are 295 airports in Southeast Asia. From Seoul there are direct flights to Bangkok Suvarnabhumi (BKK), Denpasar Bali Ngurah Rai (DPS).
Search flight deals

  • When did momondo last update prices for flights from Seoul to Southeast Asia?

    Prices for flights from Seoul to Southeast Asia refresh daily.

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

    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 stopovers. It is recommended that you verify with the airline you are booking with for travel from Seoul to Southeast Asia.

  • What documentation or ID do you need to fly to Southeast Asia?

    The required travel and health documents for your Southeast Asia trip may vary depending on your itinerary and personal circumstances. As a general rule, you should carry multiple documents, including a national ID card or driver's licence and a passport valid for six months after your intended arrival at Southeast Asia. We recommend that you seek guidance from your airline or a reliable third party such as IATA.

  • What is the most popular plane model from Seoul to Southeast Asia?

Best airlines flying from Seoul to Southeast Asia

Compare and see reviews for airlines that fly from Seoul to Southeast Asia with momondo
Airline
Rating
Free cancellation
Price
Cebu PacificPriceFrom $245Free cancellationRating
6.8
205 reviews
Search Cebu Pacific flights

Why use momondo?

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

momondo compares prices from hundreds of airlines and agents so you can find and book the best deal on flights from Seoul to Southeast Asia . Millions of users trust and use momondo every year so you are in good hands.

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

Yes. momondo allows you to filter the results for Seoul to Southeast Asia flights to just show those with flexible booking policies.

How can momondo help me find flights from Seoul to Southeast Asia?

momondo provides multiple filters to help you find the best flight to Southeast Asia from Seoul. Filter by price, airline, airports, cabin, aircraft, payment method, number of stops and more.

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

If you are simply researching potential flights to Southeast Asia, momondo offers a useful price alert feature which will track prices for flights to Southeast Asia from Seoul and alert you when they change.

An easier way to manage your Southeast Asia trip

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