Find flights
Deals
When to book
Airlines
FAQs

Cheap flights from Seoul to Southeast Asia from $106

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 9/10. Fares are subject to change and may not be available on all flights or dates of travel.
SEL — BKK
17 Oct — 24 Oct1
1 adult
1 adult, Economy

Cheap 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 17 September 2025.

Round-trip from

$204

One-way from

$106

Popular in

January

Cheapest in

September

Average price

$252
Jeju Air
  • Jeju Air
  • 13/10-23/10
  • Nonstop
  • 11h 30m total
  • Seoul to Southeast Asia
Search Deals
Jin Air
  • Jin Air
  • 9/10
  • Nonstop
  • 5h 50m total
  • Seoul to Southeast Asia
Search Deals
Highest demand for flights based on searches. 26% potential increase in price ($197 potential increase over avg. return price).
Search Deals
Cheapest flight prices on average. 4% potential price decrease ($27 potential savings vs. average return price).
Search Deals
Average for round-trip flights in September 2025
Search Deals

Find flight deals from Seoul to Southeast Asia

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 17 September 2025.

Sat 20/920:05ICN - BKK
Nonstop5h 50mJeju Air
Thu 25/901:00BKK - ICN
Nonstop5h 40mJeju Air
Deal found 15/9$169
Thu 18/920:05ICN - BKK
Nonstop5h 50mJeju Air
Wed 1/1001:00BKK - ICN
Nonstop5h 40mJeju Air
Deal found 15/9$204
Tue 21/1018:00ICN - BKK
Nonstop6h 05mT'way Air
Thu 23/1000:05BKK - ICN
Nonstop5h 35mT'way Air
Deal found 14/9$229
Wed 15/1016:50ICN - BKK
Nonstop6h 20mAIR PREMIA
Mon 20/1022:45BKK - ICN
Nonstop5h 40mAIR PREMIA
Deal found 14/9$231
Sun 12/1016:50ICN - BKK
Nonstop6h 20mAIR PREMIA
Mon 20/1022:45BKK - ICN
Nonstop5h 40mAIR PREMIA
Deal found 15/9$232
Thu 16/1020:05ICN - BKK
Nonstop5h 50mJeju Air
Sat 25/1001:00BKK - ICN
Nonstop5h 40mJeju Air
Deal found 16/9$240
Sat 20/916:50ICN - BKK
Nonstop6h 20mAIR PREMIA
Thu 25/922:45BKK - ICN
Nonstop5h 40mAIR PREMIA
Deal found 15/9$252
Thu 25/916:50ICN - BKK
Nonstop6h 20mAIR PREMIA
Mon 29/922:45BKK - ICN
Nonstop5h 40mAIR PREMIA
Deal found 15/9$253
Wed 17/920:05ICN - BKK
Nonstop5h 50mJeju Air
Thu 18/901:00BKK - ICN
Nonstop5h 40mJeju Air
Deal found 16/9$255
Sun 12/1019:55ICN - BKK
Nonstop5h 50mJin Air
Sun 19/1000:55BKK - ICN
Nonstop5h 30mJin Air
Deal found 16/9$256
Thu 16/1016:50ICN - BKK
Nonstop6h 20mAIR PREMIA
Sun 19/1022:45BKK - ICN
Nonstop5h 40mAIR PREMIA
Deal found 15/9$259
Sun 19/1016:50ICN - BKK
Nonstop6h 20mAIR PREMIA
Mon 27/1022:55BKK - ICN
Nonstop5h 40mAIR PREMIA
Deal found 16/9$261

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 17 September 2025.
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

Fri 10/10

20:05-23:55

Nonstop5h 50m

Bangkok Suvarnabhumi

Sat 18/10

01:00-08:40

Nonstop5h 40m

$255

IncheonBangkok

ICN - BKK

ICNBKK

Incheon Intl

Mon 13/10

19:55-23:45

Nonstop5h 50m

Bangkok Suvarnabhumi

Mon 20/10

00:55-08:25

Nonstop5h 30m

$267

IncheonBangkok

ICN - BKK

ICNBKK

Incheon Intl

Sat 25/10

16:50-21:10

Nonstop6h 20m

Bangkok Suvarnabhumi

Mon 27/10

22:55-06:35

Nonstop5h 40m

$325

IncheonBangkok

ICN - BKK

ICNBKK

Incheon Intl

Sat 25/10

16:50-21:10

Nonstop6h 20m

Bangkok Suvarnabhumi

Sat 1/11

22:55-06:35

Nonstop5h 40m

$348

IncheonBangkok

ICN - BKK

ICNBKK

Incheon Intl

Sun 15/3

17:10-21:10

Nonstop6h 00m

Bangkok Suvarnabhumi

Thu 19/3

22:25-05:40

Nonstop5h 15m

$352

IncheonBangkok

ICN - BKK

ICNBKK

Incheon Intl

Mon 9/3

17:10-21:10

Nonstop6h 00m

Bangkok Suvarnabhumi

Tue 17/3

22:25-05:40

Nonstop5h 15m

$360

IncheonBangkok

ICN - BKK

ICNBKK

Incheon Intl

Fri 10/10

19:30-23:10

Nonstop5h 40m

Bangkok Suvarnabhumi

Mon 13/10

01:20-08:45

Nonstop5h 25m

$364

IncheonBangkok

ICN - BKK

ICNBKK

Incheon Intl

Tue 11/11

17:10-21:10

Nonstop6h 00m

Bangkok Suvarnabhumi

Fri 14/11

22:25-05:40

Nonstop5h 15m

$369

IncheonBangkok

ICN - BKK

ICNBKK

Incheon Intl

Tue 10/3

19:50-00:10

Nonstop6h 20m

Bangkok Suvarnabhumi

Tue 17/3

01:30-09:00

Nonstop5h 30m

$387

IncheonBangkok

ICN - BKK

ICNBKK

Incheon Intl

Tue 11/11

17:15-21:25

Nonstop6h 10m

Bangkok Suvarnabhumi

Sun 16/11

22:55-06:35

Nonstop5h 40m

$390

Flights are sorted by cheapest return flights first.

Deals found on 16/9

Showing 1-10 of 42 results
1
2
3
...
5

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, February is the cheapest month in which you can book a flight from Seoul to Southeast Asia (average of $489). Flying from Seoul to Southeast Asia in December is currently the most expensive (average of $911). 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 17 September 2025.

When flying from Seoul to Southeast Asia, the time of day you decide to fly out makes little to no difference towards the overall price you’ll pay on tickets.

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 17 September 2025.

The most flights from SEL to zzYJX are scheduled on a Monday (31 on average). You will have fewer flight options on Thursday, which is when the least amount of flights are scheduled (27 on average).

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 17 September 2025.
Read through reviews of airlines operating flights from Seoul to Southeast Asia, such as Asiana Airlines, Cebu Pacific, andVietJet 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.
Asiana Airlines
8.2
Very Good
480 reviews
Check prices

Overall

8.2

Crew

8.6

Boarding

8.4

Comfort

8.1

Food

8.1

Entertainment

7.8

Reviews

1 / 20
10.0
Excellent

Yony,Sept 2025

MNL - ICN

Clean airplanes, crew very helpful and plane was on time. I did not like the food choices.
Asiana Airlines
8.2
Very Good
480 reviews
Asiana Airlines
8.2
Very Good
480 reviews
Check prices

Overall

8.2

Crew

8.6

Boarding

8.4

Comfort

8.1

Food

8.1

Entertainment

7.8

Reviews

1 / 20
10.0
Excellent

Yony,Sept 2025

MNL - ICN

Clean airplanes, crew very helpful and plane was on time. I did not like the food choices.
Cebu Pacific
6.8
Okay
201 reviews
Asiana Airlines
8.2
Very Good
480 reviews
Check prices

Overall

8.2

Crew

8.6

Boarding

8.4

Comfort

8.1

Food

8.1

Entertainment

7.8

Reviews

1 / 20
10.0
Excellent

Yony,Sept 2025

MNL - ICN

Clean airplanes, crew very helpful and plane was on time. I did not like the food choices.
VietJet Air
5.6
Fair
147 reviews
Asiana Airlines
8.2
Very Good
480 reviews
Check prices

Overall

8.2

Crew

8.6

Boarding

8.4

Comfort

8.1

Food

8.1

Entertainment

7.8

Reviews

1 / 20
10.0
Excellent

Yony,Sept 2025

MNL - ICN

Clean airplanes, crew very helpful and plane was on time. I did not like the food choices.

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 Jeju Air, Jin 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 $126 on AIR PREMIA. Other airlines that offer cheap prices include Jin Air from $145 and Jeju Air from $151 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 Oman Air(97%), EL AL(97%) or Turkish Airlines(97%), 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 $412, our data indicates the cheapest price to be $99. The most popular route (Incheon Intl - Bangkok Suvarnabhumi), is priced around $1,088.

  • 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, February is the cheapest month in which you can book a flight from Seoul to Southeast Asia (average of $489). Flying from Seoul to Southeast Asia in December is currently the most expensive (average of $911). 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 4 airlines flying from Seoul to Southeast Asia

Discover the top 4 airlines 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 17 September 2025.
AirlineCheapestAverageFlexibilityOn-time
Cebu PacificCheapest$227Average$260FlexibilityNo cancel feeOn-time64%
Search Cebu Pacific flights
Thai AirAsia XCheapest$261Average$334FlexibilityNo cancel feeOn-timeN/A
Search Thai AirAsia X flights
Korean AirCheapest$390Average$741FlexibilityNo cancel feeOn-time81%
Search Korean Air flights
Asiana AirlinesCheapest$429Average$429FlexibilityNo cancel feeOn-time76%
Search Asiana Airlines 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.

100% Free

Cheapflights is completely free to use, so you can start saving the moment you arrive.

Book with Flexibility

Our users can plan ahead with confidence and find flights with no change fees

Travel Smart

Millions of people come to us for their flight needs every year. We help make travel planning easy by providing useful insights and data-driven graphs that can inform your decisions.