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Cheap flights from Seoul to Southeast Asia from $197

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 29/6. Fares are subject to change and may not be available on all flights or dates of travel.
SEL — BKK
23 Jul — 30 Jul1
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 23 June 2026.

Mon 17/818:00
ICN
-
BKK
Nonstop6h 05m
T'way Air
Sun 30/800:05
BKK
-
ICN
Nonstop5h 35m
T'way Air
Deal found 21/6$357
Tue 30/612:15
ICN
-
BKK
1 stop15h 35m
Shandong Airlines
Wed 1/702:25
BKK
-
ICN
1 stop19h 25m
Shandong Airlines
Deal found 19/6$379
Tue 30/608:35
ICN
-
BKK
1 stop18h 50m
Shandong Airlines
Tue 7/702:50
BKK
-
ICN
1 stop17h 05m
Shandong Airlines
Deal found 20/6$380
Mon 29/622:15
ICN
-
BKK
1 stop29h 10m
Shandong Airlines
Wed 15/702:50
BKK
-
ICN
1 stop17h 05m
Shandong Airlines
Deal found 21/6$382
Sun 23/818:00
ICN
-
BKK
Nonstop6h 05m
T'way Air
Sun 30/800:05
BKK
-
ICN
Nonstop5h 35m
T'way Air
Deal found 23/6$386
Thu 2/720:05
ICN
-
BKK
Nonstop6h 05m
Jeju Air
Wed 8/701:10
BKK
-
ICN
Nonstop5h 45m
Jeju Air
Deal found 23/6$387
Fri 28/818:00
ICN
-
BKK
Nonstop6h 05m
T'way Air
Sun 30/800:05
BKK
-
ICN
Nonstop5h 35m
T'way Air
Deal found 22/6$389
Fri 3/719:55
ICN
-
BKK
Nonstop5h 50m
Jin Air
Thu 9/700:45
BKK
-
ICN
Nonstop5h 40m
Jin Air
Deal found 23/6$402
Wed 8/720:05
ICN
-
BKK
Nonstop6h 05m
Jeju Air
Sat 11/701:10
BKK
-
ICN
Nonstop5h 45m
Jeju Air
Deal found 22/6$405
Mon 10/820:05
ICN
-
BKK
Nonstop6h 05m
Jeju Air
Sun 30/801:10
BKK
-
ICN
Nonstop5h 45m
Jeju Air
Deal found 22/6$408
Thu 2/720:05
ICN
-
BKK
Nonstop6h 05m
Jeju Air
Sat 4/701:10
BKK
-
ICN
Nonstop5h 45m
Jeju Air
Deal found 23/6$413
Wed 26/818:00
ICN
-
BKK
Nonstop6h 05m
T'way Air
Wed 9/900:05
BKK
-
ICN
Nonstop5h 35m
T'way Air
Deal found 19/6$415

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 23 June 2026.

Round-trip from

$357

One-way from

$197

Popular in

May

Cheapest in

September

Average price

$422
T'way Air
  • T'way Air
  • 17/8-30/8
  • Nonstop
  • 11h 40m total
  • Seoul to Southeast Asia
Search Deals
Shandong Airlines
  • Shandong Airlines
  • 29/6
  • 1 total stop
  • 11h 05m total
  • Seoul to Southeast Asia
Search Deals
Highest demand for flights based on searches. 17% potential increase in price ($111 potential increase over avg. return price).
Search Deals
Cheapest flight prices on average. 2% potential price decrease ($15 potential savings vs. average return price).
Search Deals
Average for round-trip flights in June 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 23 June 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

Cheapest return flight

IncheonBangkok

ICN - BKK

ICNBKK

Incheon Intl

Thu 27/8

20:05-00:10

Nonstop6h 05m

Bangkok Suvarnabhumi

Sun 30/8

01:10-08:55

Nonstop5h 45m

$434

IncheonBangkok

ICN - BKK

ICNBKK

Incheon Intl

Sat 12/9

18:00-22:05

Nonstop6h 05m

Bangkok Suvarnabhumi

Wed 16/9

00:05-07:40

Nonstop5h 35m

$448

IncheonBangkok

ICN - BKK

ICNBKK

Incheon Intl

Sat 22/8

20:05-00:10

Nonstop6h 05m

Bangkok Suvarnabhumi

Wed 26/8

01:10-08:55

Nonstop5h 45m

$448
Fastest return journey

IncheonBangkok

ICN - BKK

ICNBKK

Incheon Intl

Tue 7/7

17:15-21:10

Nonstop5h 55m

Bangkok Suvarnabhumi

Fri 10/7

22:45-06:15

Nonstop5h 30m

$449

IncheonBangkok

ICN - BKK

ICNBKK

Incheon Intl

Fri 3/7

19:55-23:45

Nonstop5h 50m

Bangkok Suvarnabhumi

Sat 4/7

00:45-08:25

Nonstop5h 40m

$449

IncheonBangkok

ICN - BKK

ICNBKK

Incheon Intl

Thu 20/8

20:05-00:10

Nonstop6h 05m

Bangkok Suvarnabhumi

Sun 23/8

01:10-08:55

Nonstop5h 45m

$451

IncheonBangkok

ICN - BKK

ICNBKK

Incheon Intl

Fri 28/8

20:05-00:10

Nonstop6h 05m

Bangkok Suvarnabhumi

Sat 29/8

01:10-08:55

Nonstop5h 45m

$452

IncheonBangkok

ICN - BKK

ICNBKK

Incheon Intl

Sun 5/7

20:05-00:10

Nonstop6h 05m

Bangkok Suvarnabhumi

Wed 8/7

01:10-08:55

Nonstop5h 45m

$458

IncheonBangkok

ICN - BKK

ICNBKK

Incheon Intl

Fri 31/7

14:00-01:50

1 stop13h 50m

Bangkok Suvarnabhumi

Sat 1/8

02:50-21:55

1 stop17h 05m

$462

IncheonBangkok

ICN - BKK

ICNBKK

Incheon Intl

Tue 25/8

18:00-22:05

Nonstop6h 05m

Bangkok Suvarnabhumi

Fri 28/8

00:05-07:40

Nonstop5h 35m

$467

Flights are sorted by cheapest return flights first.

Deals found on 19/6

Showing 1-10 of 43 resultsSorted by cheapest first
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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, September is the cheapest month in which you can book a flight from Seoul to Southeast Asia (average of $292). Flying from Seoul to Southeast Asia in February is currently the most expensive (average of $452). 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 23 June 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 18% 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 23 June 2026.

The most flights from SEL to zzYJX are scheduled on a Monday (31 on average). You will have fewer flight options on Saturday, which is when the least amount of flights are scheduled (28 on average).

How far ahead should I book a flight from Seoul to Southeast Asia?

The price you pay for your flight from Seoul to Southeast Asia may vary depending on when you book. For the best chance of a lower fare, look to book 74 days in advance of your trip. Fares are likely to increase a fortnight or so before your departure date.

Reviews of airlines servicing Southeast Asia

Get insights into the airlines that provide service to Southeast Asia. Read reviews, discover amenities, and learn about the overall travel experience offered by airlines. Use this information to make informed decisions when choosing an airline for your flight to Southeast Asia. Reviews last updated 23 June 2026.
Read through reviews of airlines operating flights from Seoul to Southeast Asia, such as VietJet Air. Users can see the overall rating for each airline as well as how each is rated in terms of entertainment options, comfort, food, crew/service, and boarding process.
VietJet Air
5.6
Fair
168 reviews
Check prices

Overall

5.6

Boarding

6.0

Crew

6.6

Entertainment

4.0

Food

4.7

Comfort

5.3

Reviews

1 / 7
10.0
Excellent

xuan-anh,Apr 2026

SGN - SYD

Check in was too long (58 mn). Online check in wasn’t available on this flight (VJ85).
VietJet Air
5.6
Fair
168 reviews
VietJet Air
5.6
Fair
168 reviews
Check prices

Overall

5.6

Boarding

6.0

Crew

6.6

Entertainment

4.0

Food

4.7

Comfort

5.3

Reviews

1 / 7
10.0
Excellent

xuan-anh,Apr 2026

SGN - SYD

Check in was too long (58 mn). Online check in wasn’t available on this flight (VJ85).

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 55m. Fly via Jeju Air, T'way Air, or AIR PREMIA to get the fastest option. The distance from Seoul to Southeast Asia is about 3663 km. All flights are typically direct.

  • 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 $93 on Cebu Pacific. Other airlines that offer cheap prices include VietJet Air from $94 and Thai AirAsia X from $94 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 Kuwait Airways(100%), AIR PREMIA(100%) or EL AL(98%), 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 $354, our data indicates the cheapest price to be $203. The most popular route (Incheon Intl - Bangkok Suvarnabhumi), is priced around $989.

  • 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, September is the cheapest month in which you can book a flight from Seoul to Southeast Asia (average of $292). Flying from Seoul to Southeast Asia in February is currently the most expensive (average of $452). 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

Browse thousands of different options on Cheapflights for your next trip

Toggle through the tabs below to find thousands of options on Cheapflights for your next trip.

Top airline flying from Seoul to Southeast Asia

Discover the top airline that operate flights from Seoul to Southeast Asia. Compare their services, reliability, and customer satisfaction ratings to choose the airline that best suits your travel preferences and needs. Over the last 7 days, Cheapflights users made 647,157 searches. Data last updated 23 June 2026.
AirlineCheapestAverageFlexibilityOn-time
VietJet AirCheapest$260Average$500FlexibilityNo cancel feeOn-timeN/A
Search VietJet Air flights

Fly with Cheapflights

Find the best flight deals on Cheapflights, where travellers can enjoy low prices and a wide availability of flights to their desired destinations.

How does Cheapflights help users find flights from Seoul to Southeast Asia?

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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