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Cheap flights from Seoul to Southeast Asia from $129

This is the cheapest one-way flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 7/2. Fares are subject to change and may not be available on all flights or dates of travel.
SEL — BKK
4 Mar — 11 Mar1
1 adult
1 adult, Economy, 0 bags

Cheap flight deals from Seoul to Southeast Asia

Enter your travel dates to find the best prices.

Cheapest flights from Seoul to Southeast Asia
Explore the most affordable flight options available from Seoul to Southeast Asia. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 2 February 2026.

Sun 26/412:10
ICN
-
BKK
Nonstop5h 50m
Thai Vietjet Air
Sat 2/502:25
BKK
-
ICN
Nonstop5h 35m
Thai Vietjet Air
Deal found 2/2$241
Sun 8/219:30
ICN
-
BKK
Nonstop6h 15m
Jeju Air
Thu 12/201:00
BKK
-
ICN
Nonstop5h 25m
Jeju Air
Deal found 1/2$247
Mon 27/419:55
ICN
-
BKK
Nonstop5h 50m
Jin Air
Fri 1/500:45
BKK
-
ICN
Nonstop5h 40m
Jin Air
Deal found 1/2$248
Thu 26/317:10
ICN
-
BKK
Nonstop6h 00m
Jin Air
Wed 22/400:45
BKK
-
ICN
Nonstop5h 40m
Jin Air
Deal found 2/2$253
Wed 28/1010:10
ICN
-
BKK
1 stop8h 50m
Vietnam Airlines
Sun 29/1119:00
BKK
-
ICN
1 stop8h 30m
Vietnam Airlines
Deal found 1/2$254
Thu 19/316:50
ICN
-
BKK
Nonstop6h 30m
Air Busan
Thu 26/322:20
BKK
-
ICN
Nonstop5h 45m
Air Busan
Deal found 1/2$255
Wed 22/419:55
ICN
-
BKK
Nonstop5h 50m
Jin Air
Fri 24/400:45
BKK
-
ICN
Nonstop5h 40m
Jin Air
Deal found 1/2$258
Sun 17/517:15
ICN
-
BKK
Nonstop5h 55m
AIR PREMIA
Thu 21/522:45
BKK
-
ICN
Nonstop5h 30m
AIR PREMIA
Deal found 1/2$260
Wed 11/317:15
ICN
-
BKK
Nonstop6h 10m
AIR PREMIA
Fri 17/422:45
BKK
-
ICN
Nonstop5h 30m
AIR PREMIA
Deal found 31/1$261
Thu 9/417:55
ICN
-
BKK
1 stop28h 10m
Vietnam Airlines
Thu 23/418:05
BKK
-
ICN
1 stop9h 55m
Vietnam Airlines
Deal found 2/2$263
Wed 25/319:50
ICN
-
BKK
Nonstop6h 20m
T'way Air
Sat 28/301:30
BKK
-
ICN
Nonstop5h 30m
T'way Air
Deal found 1/2$266
Sat 28/217:05
ICN
-
BKK
Nonstop6h 20m
Eastar Jet
Mon 9/322:25
BKK
-
ICN
Nonstop5h 55m
Eastar Jet
Deal found 2/2$267

Find flight deals from Seoul to Southeast Asia

Keep the following information in mind while searching for Seoul to Southeast Asia flight deals. Data was last updated 2 February 2026.

Round-trip from

$254

One-way from

$129

Popular in

January

Cheapest in

September

Average price

$400
Vietnam Airlines
  • Vietnam Airlines
  • 20/4-16/5
  • 2 total stops
  • 27h 30m total
  • Seoul to Southeast Asia
Search Deals
Jin Air
  • Jin Air
  • 7/2
  • Nonstop
  • 6h 00m total
  • Seoul to Southeast Asia
Search Deals
Highest demand for flights based on searches. 20% potential increase in price ($122 potential increase over avg. return price).
Search Deals
Cheapest flight prices on average. 3% potential price decrease ($16 potential savings vs. average return price).
Search Deals
Average for round-trip flights in February 2026
Search Deals

Cheapflights 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, Cheapflights users made 647,157 searches. Data last updated 2 February 2026.
Use the filters below to find and compare flights from Seoul to Southeast Asia that are best for you.

Fly from

Seoul

Fly to

Southeast Asia

Route

Depart

Return

Price

IncheonBangkok

ICN - BKK

ICNBKK

Incheon Intl

Tue 24/3

19:50-00:10

Nonstop6h 20m

Bangkok Suvarnabhumi

Sat 28/3

01:30-09:00

Nonstop5h 30m

$267

IncheonBangkok

ICN - BKK

ICNBKK

Incheon Intl

Sun 21/6

17:15-21:10

Nonstop5h 55m

Bangkok Suvarnabhumi

Thu 25/6

22:45-06:15

Nonstop5h 30m

$274

IncheonBangkok

ICN - BKK

ICNBKK

Incheon Intl

Fri 29/5

10:05-18:05

1 stop10h 00m

Bangkok Suvarnabhumi

Wed 3/6

18:05-06:00

1 stop9h 55m

$277

IncheonBangkok

ICN - BKK

ICNBKK

Incheon Intl

Thu 7/5

17:15-21:10

Nonstop5h 55m

Bangkok Suvarnabhumi

Thu 21/5

22:45-06:15

Nonstop5h 30m

$278

IncheonBangkok

ICN - BKK

ICNBKK

Incheon Intl

Sat 21/3

17:15-21:25

Nonstop6h 10m

Bangkok Suvarnabhumi

Sun 29/3

22:45-06:15

Nonstop5h 30m

$294

IncheonBangkok

ICN - BKK

ICNBKK

Incheon Intl

Mon 27/4

19:55-23:45

Nonstop5h 50m

Bangkok Suvarnabhumi

Fri 1/5

00:45-08:25

Nonstop5h 40m

$299

IncheonBangkok

ICN - BKK

ICNBKK

Incheon Intl

Sat 1/8

16:45-01:50

1 stop11h 05m

Bangkok Suvarnabhumi

Tue 4/8

02:50-15:45

1 stop10h 55m

$311

IncheonBangkok

ICN - BKK

ICNBKK

Incheon Intl

Wed 1/4

11:45-01:25

1 stop15h 40m

Bangkok Suvarnabhumi

Sun 12/4

02:50-14:30

1 stop9h 40m

$313

IncheonBangkok

ICN - BKK

ICNBKK

Incheon Intl

Fri 6/3

15:25-01:40

1 stop12h 15m

Bangkok Suvarnabhumi

Fri 13/3

02:40-21:10

1 stop16h 30m

$314

IncheonBangkok

ICN - BKK

ICNBKK

Incheon Intl

Tue 21/4

17:15-21:10

Nonstop5h 55m

Bangkok Suvarnabhumi

Sun 26/4

22:45-06:15

Nonstop5h 30m

$314

Flights are sorted by cheapest return flights first.

Deals found on 31/1

Showing 1-10 of 44 results
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Best time to book a flight from Seoul to Southeast Asia

Have a flexible travel schedule? Discover the best time to fly to Southeast Asia from Seoul with our price prediction graph.
Estimated return price
Rates are based on past data. Find the cheapest month and day to book your flight based on your travel requirements, then search for cheap deals.

Cheapflights Insights

Everything you need to know about your flight from Seoul to Southeast Asia

What is the cheapest month to book a flight from Seoul to Southeast Asia?

Currently, November is the cheapest month in which you can book a flight from Seoul to Southeast Asia (average of $136). Flying from Seoul to Southeast Asia in January is currently the most expensive (average of $241). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

What is the cheapest time of day to fly from SEL to YJX?

Find hourly flight availability from Seoul to Southeast Asia. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated 2 February 2026.

A simple way to save on the total cost of your ticket is to fly from Seoul to Southeast Asia in the evening. If you’re flexible enough to do this you can expect to save up to 10% on your trip compared to booking a flight in the afternoon.

Weekly flight availability from Seoul to Southeast Asia

Explore weekly flight availability from Seoul to Southeast Asia. Discover flights operating on different days of the week, giving you the flexibility to choose a travel day that best fits your plans. Compare info to find the most convenient option for your journey. Data last updated 2 February 2026.

The most flights from SEL to zzYJX are scheduled on a Friday (41 on average). You will have fewer flight options on Monday, which is when the least amount of flights are scheduled (39 on average).

Related info for your journey

Find useful and relevant information for your journey from Seoul to Southeast Asia. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.

  • How long is the flight from Seoul to Southeast Asia?

    There are many flights that can get you from Seoul to Southeast Asia in 5h 50m. Fly via Jin Air, Vietnam Airlines, or AIR PREMIA to get the fastest option. The distance from Seoul to Southeast Asia is about 3663 km. This flight may include one or multiple stops.

  • What are the cheapest airlines to fly from Seoul to Southeast Asia one-way?

    One-way options have recently been found by users for as low as $78 on Jeju Air. Other airlines that offer cheap prices include Philippines AirAsia from $79 and Cebu Pacific from $93 one-way.

  • What are the most reliable airlines from Seoul to Southeast Asia?

    No one likes to see their flight delayed. When booking a flight from Seoul to Southeast Asia consider choosing Air Busan(93%), AIR PREMIA(86%) or Kuwait Airways(86%), as they are the most reliable in getting you off to your destination on time.

  • What are the cheapest flights from Seoul to Southeast Asia?

    Looking for the cheapest flight from Seoul to Southeast Asia? While on average our users pay $205, our data indicates the cheapest price to be $90. The most popular route (Incheon Intl - Bangkok Suvarnabhumi), is priced around $817.

  • Can I find deals for flights from Seoul to Southeast Asia that include hotel bookings?

    Yes. In addition to deals on Seoul to Southeast Asia flights, Cheapflights offers holiday packages that include both flights and hotel.

  • How can I find direct flights from Seoul to Southeast Asia?

    After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Seoul to Southeast Asia.

  • Can I find deals for business class flights from Seoul to Southeast Asia?

    Yes. Cheapflights offers flight deals from Seoul to Southeast Asia by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.

  • What is the cheapest month to book a flight from Seoul to Southeast Asia?

    Currently, November is the cheapest month in which you can book a flight from Seoul to Southeast Asia (average of $136). Flying from Seoul to Southeast Asia in January is currently the most expensive (average of $241). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

See more FAQs

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When you search for this flight from Seoul to Southeast Asia, Cheapflights searches on 900+ travel sites to save you time finding great flight deals online. Additionally, we offer filter features so you can choose a preferred cabin class or airline, see different price ranges, and much more so you can book the flight for you.

Why should you use Cheapflights to find cheap flight tickets from Seoul to Southeast Asia?

Millions of users choose and trust Cheapflights to book the best flight deals from Seoul to Southeast Asia for free. We help you search and compare prices from hundreds of airlines for the right flight just for you.

Can Cheapflights find flights from Seoul to Southeast Asia with no change fees?

Yes, we can. To see specific flights from Seoul to Southeast Asia with no change fees, users can toggle flexible booking options after using the search form above to find flights.

Can Cheapflights notify me if prices for flights from Seoul to Southeast Asia become cheaper?

Yes! Start tracking prices for Seoul to Southeast Asia flights today and get alerted whenever prices for these flights change. To access this feature, click the bell icon next to the flight deals above, which will prompt you for a valid email address to receive your alerts.

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