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Cheap flights from Seoul to Southeast Asia from $132

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 30/3. Fares are subject to change and may not be available on all flights or dates of travel.
SEL — BKK
17 Jan — 24 Jan1
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 18 December 2025.

Mon 15/1219:30ICN - BKK
Nonstop6h 15mJeju Air
Thu 18/1201:00BKK - ICN
Nonstop5h 25mJeju Air
Deal found 14/12$375
Tue 16/1219:30ICN - BKK
Nonstop6h 15mJeju Air
Wed 17/1201:00BKK - ICN
Nonstop5h 25mJeju Air
Deal found 15/12$405
Mon 15/1219:30ICN - BKK
Nonstop6h 15mJeju Air
Sun 28/1201:00BKK - ICN
Nonstop5h 25mJeju Air
Deal found 15/12$408
Tue 16/1219:30ICN - BKK
Nonstop6h 15mJeju Air
Mon 22/1201:00BKK - ICN
Nonstop5h 25mJeju Air
Deal found 15/12$410
Thu 18/1219:30ICN - BKK
Nonstop6h 15mJeju Air
Thu 25/1201:00BKK - ICN
Nonstop5h 25mJeju Air
Deal found 16/12$411
Sun 21/1219:30ICN - BKK
Nonstop6h 15mJeju Air
Thu 25/1201:00BKK - ICN
Nonstop5h 25mJeju Air
Deal found 16/12$414
Tue 16/1219:30ICN - BKK
Nonstop6h 15mJeju Air
Wed 7/101:00BKK - ICN
Nonstop5h 25mJeju Air
Deal found 15/12$423
Thu 18/1219:30ICN - BKK
Nonstop6h 15mJeju Air
Mon 22/1201:00BKK - ICN
Nonstop5h 25mJeju Air
Deal found 16/12$425
Sun 21/1217:15ICN - BKK
Nonstop6h 10mAIR PREMIA
Thu 8/122:55BKK - ICN
Nonstop5h 40mAIR PREMIA
Deal found 15/12$426
Sun 21/1219:30ICN - BKK
Nonstop6h 15mJeju Air
Thu 1/101:00BKK - ICN
Nonstop5h 25mJeju Air
Deal found 16/12$428
Sun 21/1219:30ICN - BKK
Nonstop6h 15mJeju Air
Mon 22/1201:00BKK - ICN
Nonstop5h 25mJeju Air
Deal found 16/12$429
Fri 19/1212:10ICN - BKK
Nonstop6h 10mThai Vietjet Air
Fri 26/1202:25BKK - ICN
Nonstop5h 30mThai Vietjet Air
Deal found 17/12$431

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 18 December 2025.

Round-trip from

$275

One-way from

$132

Popular in

January

Cheapest in

September

Average price

$434
Jeju Air
  • Jeju Air
  • 12/5-19/5
  • Nonstop
  • 11h 50m total
  • Seoul to Southeast Asia
Search Deals
Thai Vietjet Air
  • Thai Vietjet Air
  • 30/3
  • Nonstop
  • 5h 50m total
  • Seoul to Southeast Asia
Search Deals
Highest demand for flights based on searches. 24% potential increase in price ($173 potential increase over avg. return price).
Search Deals
Cheapest flight prices on average. 4% potential price decrease ($23 potential savings vs. average return price).
Search Deals
Average for round-trip flights in December 2025
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 18 December 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

Tue 31/3

11:05-17:05

1 stop8h 00m

Bangkok Suvarnabhumi

Sun 5/4

18:05-06:00

1 stop9h 55m

$307

IncheonBangkok

ICN - BKK

ICNBKK

Incheon Intl

Sun 29/3

20:05-00:10

Nonstop6h 05m

Bangkok Suvarnabhumi

Wed 1/4

01:10-08:55

Nonstop5h 45m

$316

IncheonBangkok

ICN - BKK

ICNBKK

Incheon Intl

Sat 13/6

20:05-00:10

Nonstop6h 05m

Bangkok Suvarnabhumi

Fri 19/6

01:10-08:55

Nonstop5h 45m

$322

IncheonBangkok

ICN - BKK

ICNBKK

Incheon Intl

Tue 3/3

17:05-21:25

Nonstop6h 20m

Bangkok Suvarnabhumi

Mon 16/3

22:25-06:20

Nonstop5h 55m

$363

IncheonBangkok

ICN - BKK

ICNBKK

Incheon Intl

Sun 22/2

17:05-21:25

Nonstop6h 20m

Bangkok Suvarnabhumi

Tue 3/3

22:25-06:20

Nonstop5h 55m

$363

IncheonBangkok

ICN - BKK

ICNBKK

Incheon Intl

Sun 1/3

17:15-21:25

Nonstop6h 10m

Bangkok Suvarnabhumi

Thu 5/3

22:55-06:35

Nonstop5h 40m

$393

IncheonBangkok

ICN - BKK

ICNBKK

Incheon Intl

Sat 7/2

19:30-23:45

Nonstop6h 15m

Bangkok Suvarnabhumi

Wed 11/2

01:00-08:25

Nonstop5h 25m

$393

IncheonBangkok

ICN - BKK

ICNBKK

Incheon Intl

Fri 22/5

17:15-21:10

Nonstop5h 55m

Bangkok Suvarnabhumi

Sun 24/5

22:45-06:15

Nonstop5h 30m

$411

IncheonDenpasar

ICN - DPS

ICNDPS

Incheon Intl

Mon 30/3

10:35-15:00

1 stop29h 25m

Denpasar Bali Ngurah Rai

Sun 5/4

16:00-16:25

1 stop23h 25m

$426

IncheonBangkok

ICN - BKK

ICNBKK

Incheon Intl

Wed 4/2

17:10-21:10

Nonstop6h 00m

Bangkok Suvarnabhumi

Mon 9/2

22:25-06:05

Nonstop5h 40m

$428

Flights are sorted by cheapest return flights first.

Deals found on 16/12

Showing 1-10 of 45 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 $145). Flying from Seoul to Southeast Asia in January is currently the most expensive (average of $264). 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 18 December 2025.

A simple way to save on the total cost of your ticket is to fly from Seoul to Southeast Asia at midday. If you’re flexible enough to do this you can expect to save up to 17% 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 18 December 2025.

The most flights from SEL to zzYJX are scheduled on a Wednesday (46 on average). You will have fewer flight options on Tuesday, which is when the least amount of flights are scheduled (44 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 18 December 2025.
Read through reviews of airlines operating flights from Seoul to Southeast Asia, such as Cebu Pacific and 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.
Cebu Pacific
6.8
Okay
204 reviews
Check prices

Comfort

6.7

Entertainment

5.3

Boarding

6.7

Crew

7.5

Overall

6.8

Food

5.8

Reviews

1 / 13
6.0
Good

Firuz,July 2025

MNL - ICN

Display for boarding gate was catastrophic and boarding process was chaotic. Very confusing. That was however likely due to disorganised airport and not fault of Cebu pacific. However Cebu pacific could have had one staff member staying with passenger to answer questions if those arise.
Cebu Pacific
6.8
Okay
204 reviews
Cebu Pacific
6.8
Okay
204 reviews
Check prices

Comfort

6.7

Entertainment

5.3

Boarding

6.7

Crew

7.5

Overall

6.8

Food

5.8

Reviews

1 / 13
6.0
Good

Firuz,July 2025

MNL - ICN

Display for boarding gate was catastrophic and boarding process was chaotic. Very confusing. That was however likely due to disorganised airport and not fault of Cebu pacific. However Cebu pacific could have had one staff member staying with passenger to answer questions if those arise.
VietJet Air
5.6
Fair
153 reviews
Cebu Pacific
6.8
Okay
204 reviews
Check prices

Comfort

6.7

Entertainment

5.3

Boarding

6.7

Crew

7.5

Overall

6.8

Food

5.8

Reviews

1 / 13
6.0
Good

Firuz,July 2025

MNL - ICN

Display for boarding gate was catastrophic and boarding process was chaotic. Very confusing. That was however likely due to disorganised airport and not fault of Cebu pacific. However Cebu pacific could have had one staff member staying with passenger to answer questions if those arise.

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 6h 05m. Fly via Vietnam Airlines, Jeju Air, or Eastar Jet 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 $82 on Jeju Air. Other airlines that offer cheap prices include Philippines AirAsia from $84 and Cebu Pacific from $98 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(92%), Air Busan(91%) or AIR PREMIA(91%), 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 $438, our data indicates the cheapest price to be $319. The most popular route (Incheon Intl - Bangkok Suvarnabhumi), is priced around $908.

  • 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 $145). Flying from Seoul to Southeast Asia in January is currently the most expensive (average of $264). 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 18 December 2025.
AirlineCheapestAverageFlexibilityOn-time
Cebu PacificCheapest$248Average$282FlexibilityNo cancel feeOn-time64%
Search Cebu Pacific 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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