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Cheap flights from Seoul to Southeast Asia from $177

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 11/6. Fares are subject to change and may not be available on all flights or dates of travel.
SEL — BKK
9 Jun — 16 Jun1
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 10 May 2026.

Sat 6/621:45
ICN
-
BKK
1 stop30h 05m
Shandong Airlines
Mon 8/602:50
BKK
-
ICN
1 stop9h 40m
Shandong Airlines
Deal found 9/5$335
Tue 19/522:15
ICN
-
BKK
1 stop29h 10m
Shandong Airlines
Fri 22/502:25
BKK
-
ICN
1 stop30h 20m
Shandong Airlines
Deal found 6/5$357
Wed 27/516:45
ICN
-
BKK
1 stop11h 05m
Shandong Airlines
Tue 9/602:50
BKK
-
ICN
1 stop10h 55m
Shandong Airlines
Deal found 9/5$359
Sun 24/508:35
ICN
-
BKK
1 stop18h 50m
Shandong Airlines
Sun 7/602:50
BKK
-
ICN
1 stop17h 05m
Shandong Airlines
Deal found 8/5$361
Mon 25/522:15
ICN
-
BKK
1 stop29h 10m
Shandong Airlines
Mon 8/602:50
BKK
-
ICN
1 stop10h 55m
Shandong Airlines
Deal found 8/5$363
Wed 15/713:30
ICN
-
BKK
1 stop23h 45m
XiamenAir
Mon 20/712:15
BKK
-
ICN
1 stop22h 15m
XiamenAir
Deal found 6/5$371
Thu 18/623:40
ICN
-
BKK
1 stop27h 45m
Shandong Airlines
Thu 25/602:50
BKK
-
ICN
1 stop9h 40m
Shandong Airlines
Deal found 5/5$374
Wed 17/616:45
ICN
-
BKK
1 stop11h 05m
Shandong Airlines
Fri 26/602:50
BKK
-
ICN
1 stop9h 40m
Shandong Airlines
Deal found 9/5$375
Tue 30/608:35
ICN
-
BKK
1 stop18h 50m
Shandong Airlines
Fri 3/702:50
BKK
-
ICN
1 stop9h 40m
Shandong Airlines
Deal found 8/5$378
Thu 25/608:35
ICN
-
BKK
1 stop18h 50m
Shandong Airlines
Fri 26/602:50
BKK
-
ICN
1 stop10h 55m
Shandong Airlines
Deal found 8/5$379
Tue 2/623:40
ICN
-
BKK
1 stop27h 45m
Shandong Airlines
Fri 5/602:25
BKK
-
ICN
1 stop19h 25m
Shandong Airlines
Deal found 6/5$385
Fri 13/1100:10
ICN
-
DPS
1 stop19h 15m
Malaysia Airlines
Mon 23/1116:25
DPS
-
ICN
1 stop13h 05m
Malaysia Airlines
Deal found 9/5$521

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 10 May 2026.

Round-trip from

$335

One-way from

$177

Popular in

April

Cheapest in

September

Average price

$349
Shandong Airlines
  • Shandong Airlines
  • 6/6-8/6
  • 2 total stops
  • 39h 45m total
  • Seoul to Southeast Asia
Search Deals
Shandong Airlines
  • Shandong Airlines
  • 11/6
  • 1 total stop
  • 18h 50m total
  • Seoul to Southeast Asia
Search Deals
Highest demand for flights based on searches. 5% potential increase in price ($25 potential increase over avg. return price).
Search Deals
Cheapest flight prices on average. 2% potential price decrease ($13 potential savings vs. average return price).
Search Deals
Average for round-trip flights in May 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 10 May 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 16/7

14:00-01:50

1 stop13h 50m

Bangkok Suvarnabhumi

Sun 19/7

02:50-15:45

1 stop10h 55m

$394

IncheonBangkok

ICN - BKK

ICNBKK

Incheon Intl

Tue 14/7

12:15-01:50

1 stop15h 35m

Bangkok Suvarnabhumi

Sun 19/7

02:50-14:30

1 stop9h 40m

$396

IncheonBangkok

ICN - BKK

ICNBKK

Incheon Intl

Wed 15/7

11:45-01:25

1 stop15h 40m

Bangkok Suvarnabhumi

Sun 19/7

02:50-14:30

1 stop9h 40m

$396

IncheonBangkok

ICN - BKK

ICNBKK

Incheon Intl

Mon 13/7

14:00-01:50

1 stop13h 50m

Bangkok Suvarnabhumi

Sun 19/7

02:50-15:45

1 stop10h 55m

$396

IncheonBangkok

ICN - BKK

ICNBKK

Incheon Intl

Tue 14/7

16:45-01:50

1 stop11h 05m

Bangkok Suvarnabhumi

Fri 17/7

02:50-14:30

1 stop9h 40m

$396

IncheonBangkok

ICN - BKK

ICNBKK

Incheon Intl

Thu 28/5

16:15-00:40

1 stop10h 25m

Bangkok Suvarnabhumi

Sun 31/5

07:50-22:45

1 stop12h 55m

$454

IncheonBangkok

ICN - BKK

ICNBKK

Incheon Intl

Tue 9/6

14:15-00:40

2 stops12h 25m

Bangkok Suvarnabhumi

Tue 16/6

02:10-11:55

1 stop7h 45m

$472

IncheonBangkok

ICN - BKK

ICNBKK

Incheon Intl

Sat 27/6

15:55-04:05

2 stops14h 10m

Bangkok Suvarnabhumi

Wed 1/7

15:55-10:55

2 stops17h 00m

$479

IncheonBangkok

ICN - BKK

ICNBKK

Incheon Intl

Thu 23/7

11:55-01:55

2 stops16h 00m

Bangkok Suvarnabhumi

Sun 26/7

02:25-21:05

2 stops16h 40m

$505

IncheonBangkok

ICN - BKK

ICNBKK

Incheon Intl

Tue 14/7

11:55-00:40

2 stops14h 45m

Bangkok Suvarnabhumi

Sat 18/7

02:10-14:55

2 stops10h 45m

$518

Flights are sorted by cheapest return flights first.

Deals found on 9/5

Showing 1-10 of 48 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

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 69 days in advance of your trip. Fares are likely to increase a fortnight or so before your departure date.

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

Currently, May is the cheapest month in which you can book a flight from Seoul to Southeast Asia (average of $262). Flying from Seoul to Southeast Asia in October is currently the most expensive (average of $466). 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 10 May 2026.

A simple way to save on the total cost of your ticket is to fly from Seoul to Southeast Asia in the morning. If you’re flexible enough to do this you can expect to save up to 16% 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 10 May 2026.

The most flights from SEL to zzYJX are scheduled on a Friday (26 on average). You will have fewer flight options on Thursday, which is when the least amount of flights are scheduled (18 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 13h 50m. Fly via Shandong Airlines, Vietnam Airlines, or China Eastern 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 $76 on Philippines AirAsia. Other airlines that offer cheap prices include Cebu Pacific from $89 and Thai AirAsia X from $90 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 Eastar Jet(96%), Kuwait Airways(95%) or AIR PREMIA(94%), 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 $426, our data indicates the cheapest price to be $426. The most popular route (Incheon Intl - Bangkok Suvarnabhumi), is priced around $947.

  • 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, May is the cheapest month in which you can book a flight from Seoul to Southeast Asia (average of $262). Flying from Seoul to Southeast Asia in October is currently the most expensive (average of $466). 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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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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