Find flights
Deals
When to book
Airlines
FAQs

Cheap flights from Seoul to Southeast Asia from $141

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 6/5. Fares are subject to change and may not be available on all flights or dates of travel.
SEL — BKK
3 Apr — 10 Apr1
1 adult

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 29 March 2025.

Round-trip from

$291

One-way from

$141

Popular in

January

Cheapest in

June

Average price

$385
Jeju Air
  • Jeju Air
  • 9/5-15/5
  • Nonstop
  • 11h 34m total
  • Seoul to Southeast Asia
Search Deals
Jeju Air
  • Jeju Air
  • 6/5
  • Nonstop
  • 5h 54m total
  • Seoul to Southeast Asia
Search Deals
Highest demand for flights based on searches. 17% potential increase in price ($150 potential increase over avg. return price).
Search Deals
Cheapest flight prices on average. 3% potential price decrease ($25 potential savings vs. average return price).
Search Deals
Average for round-trip flights in March 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 29 March 2025.

Mon 26/520:05ICN - BKK
Nonstop5h 54mJeju Air
Sun 1/601:00BKK - ICN
Nonstop5h 40mJeju Air
Deal found 29/3$289
Wed 23/416:50ICN - BKK
Nonstop6h 20mAIR PREMIA
Sat 26/422:45BKK - ICN
Nonstop5h 40mAIR PREMIA
Deal found 28/3$292
Mon 16/618:00ICN - BKK
Nonstop6h 35mT'way Air
Fri 20/600:05BKK - ICN
Nonstop5h 35mT'way Air
Deal found 29/3$299
Mon 12/518:05ICN - BKK
1 stop22h 40mVietnam Airlines
Sun 25/519:05BKK - ICN
1 stop8h 45mVietnam Airlines
Deal found 28/3$304
Sat 5/419:55ICN - BKK
Nonstop5h 50mJin Air
Wed 16/400:55BKK - ICN
Nonstop5h 30mJin Air
Deal found 27/3$310
Sun 13/414:40ICN - BKK
1 stop22h 30mShenzhen Airlines
Thu 8/512:10BKK - ICN
1 stop23h 30mShenzhen Airlines
Deal found 28/3$393
Thu 4/917:55ICN - DPS
1 stop22h 05mVietnam Airlines
Wed 17/916:00DPS - ICN
1 stop23h 25mVietnam Airlines
Deal found 28/3$423
Thu 10/400:10ICN - DPS
1 stop19h 20mMalaysia Airlines
Mon 14/419:20DPS - ICN
1 stop10h 50mMalaysia Airlines
Deal found 28/3$435
Thu 15/500:10ICN - BKK
1 stop19h 10mMalaysia Airlines
Tue 20/514:15BKK - ICN
1 stop14h 55mMalaysia Airlines
Deal found 28/3$437
Thu 29/515:10ICN - DPS
1 stop27h 30mCathay Pacific
Fri 13/618:45DPS - ICN
1 stop25h 25mCathay Pacific
Deal found 28/3$466
Fri 18/422:55ICN - BKK
1 stop28h 55mShandong Airlines
Sun 20/402:25BKK - ICN
1 stop30h 20mShandong Airlines
Deal found 28/3$483
Wed 18/607:20ICN - BKK
Nonstop5h 35mAsiana Airlines
Mon 23/611:55BKK - ICN
Nonstop5h 45mAsiana Airlines
Deal found 28/3$512

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 29 March 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

Mon 26/5

20:05-23:59

Nonstop5h 54m

Bangkok Suvarnabhumi

Sun 1/6

01:00-08:40

Nonstop5h 40m

$289

IncheonBangkok

ICN - BKK

ICNBKK

Incheon Intl

Wed 23/4

16:50-21:10

Nonstop6h 20m

Bangkok Suvarnabhumi

Sat 26/4

22:45-06:25

Nonstop5h 40m

$292

IncheonBangkok

ICN - BKK

ICNBKK

Incheon Intl

Mon 16/6

18:00-22:35

Nonstop6h 35m

Bangkok Suvarnabhumi

Fri 20/6

00:05-07:40

Nonstop5h 35m

$299

IncheonBangkok

ICN - BKK

ICNBKK

Incheon Intl

Mon 12/5

18:05-14:45

1 stop22h 40m

Bangkok Suvarnabhumi

Sun 25/5

19:05-05:50

1 stop8h 45m

$304

IncheonBangkok

ICN - BKK

ICNBKK

Incheon Intl

Thu 4/9

19:55-23:45

Nonstop5h 50m

Bangkok Suvarnabhumi

Sat 13/9

00:55-08:25

Nonstop5h 30m

$348

IncheonBangkok

ICN - BKK

ICNBKK

Incheon Intl

Sun 13/4

14:40-11:10

1 stop22h 30m

Bangkok Suvarnabhumi

Thu 8/5

12:10-13:40

1 stop23h 30m

$393

IncheonDenpasar

ICN - DPS

ICNDPS

Incheon Intl

Thu 4/9

17:55-15:00

1 stop22h 05m

Denpasar Bali Ngurah Rai

Wed 17/9

16:00-16:25

1 stop23h 25m

$423

IncheonDenpasar

ICN - DPS

ICNDPS

Incheon Intl

Thu 10/4

00:10-18:30

1 stop19h 20m

Denpasar Bali Ngurah Rai

Mon 14/4

19:20-07:10

1 stop10h 50m

$435

IncheonBangkok

ICN - BKK

ICNBKK

Incheon Intl

Thu 15/5

00:10-17:20

1 stop19h 10m

Bangkok Suvarnabhumi

Tue 20/5

14:15-07:10

1 stop14h 55m

$437

IncheonDenpasar

ICN - DPS

ICNDPS

Incheon Intl

Thu 29/5

15:10-17:40

1 stop27h 30m

Denpasar Bali Ngurah Rai

Fri 13/6

18:45-21:10

1 stop25h 25m

$466

Flights are sorted by cheapest return flights first.

Deals found on 27/3

Showing 1-10 of 46 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 29 March 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.

Rainfall in Southeast Asia by month

Plan your trip to Southeast Asia by taking into account the average rainfall totals by month.

In terms of precipitation, rainfall in Southeast Asia ranges from 10.0 - 320.0 inches per month. September is typically the wettest month, when rainfall can reach 320.0 mm. January is typically the driest time to visit Southeast Asia when rainfall is around 10.0 mm.

Temperature in Southeast Asia by month

Plan your trip to Southeast Asia by taking into account the average temperature totals by month.

If weather is an important factor for your trip to Southeast Asia, use this chart to help with planning. For those seeking warmer temperatures, April is the ideal time of year to visit, when temperatures reach an average of 30.0 C. Travellers hoping to avoid the cold should look outside of January, when temperatures are typically at their lowest (around 26.0 C).

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 29 March 2025.
Peruse reviews from past customers who have flown with Korean Air, Asiana Airlines and AIR PREMIA from Seoul to Southeast Asia to help guide your decision. You can also see how each airline stacks up in terms of entertainment options, comfort, food, crew/service, and boarding process.
Korean Air
8.4
Very Good
1,050 reviews
Check prices

Comfort

8.3

Food

8.1

Crew

8.7

Entertainment

8.2

Boarding

8.5

Overall

8.4

Reviews

1 / 20
10.0
Excellent

David,Dec 2024

ICN - JFK

A great airline with very attentive flight crew. Comfortable seats with more legroom than some other carriers. Good was relatively good and is included in many flights! Highly recommend.
Korean Air
8.4
Very Good
1,050 reviews
Korean Air
8.4
Very Good
1,050 reviews
Check prices

Comfort

8.3

Food

8.1

Crew

8.7

Entertainment

8.2

Boarding

8.5

Overall

8.4

Reviews

1 / 20
10.0
Excellent

David,Dec 2024

ICN - JFK

A great airline with very attentive flight crew. Comfortable seats with more legroom than some other carriers. Good was relatively good and is included in many flights! Highly recommend.
Asiana Airlines
8.2
Very Good
440 reviews
Korean Air
8.4
Very Good
1,050 reviews
Check prices

Comfort

8.3

Food

8.1

Crew

8.7

Entertainment

8.2

Boarding

8.5

Overall

8.4

Reviews

1 / 20
10.0
Excellent

David,Dec 2024

ICN - JFK

A great airline with very attentive flight crew. Comfortable seats with more legroom than some other carriers. Good was relatively good and is included in many flights! Highly recommend.
AIR PREMIA
8.2
Very Good
Korean Air
8.4
Very Good
1,050 reviews
Check prices

Comfort

8.3

Food

8.1

Crew

8.7

Entertainment

8.2

Boarding

8.5

Overall

8.4

Reviews

1 / 20
10.0
Excellent

David,Dec 2024

ICN - JFK

A great airline with very attentive flight crew. Comfortable seats with more legroom than some other carriers. Good was relatively good and is included in many flights! Highly recommend.
Garuda Indonesia
8.2
Very Good
71 reviews
Korean Air
8.4
Very Good
1,050 reviews
Check prices

Comfort

8.3

Food

8.1

Crew

8.7

Entertainment

8.2

Boarding

8.5

Overall

8.4

Reviews

1 / 20
10.0
Excellent

David,Dec 2024

ICN - JFK

A great airline with very attentive flight crew. Comfortable seats with more legroom than some other carriers. Good was relatively good and is included in many flights! Highly recommend.

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.

  • 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 $141 on Jeju Air. Other airlines that offer cheap prices include Jin Air from $148 and AIR PREMIA from $164 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(86%), Turkish Airlines(77%) or Oman Air(75%), 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 $441, our data indicates the cheapest price to be $215. The most popular route (Incheon Intl - Denpasar Bali Ngurah Rai), is priced around $462.

  • 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 5 airlines flying from Seoul to Southeast Asia

Discover the top 5 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 29 March 2025.
AirlineCheapestAverageFlexibilityOn-time
T'way AirCheapest$190Average$381FlexibilityNo cancel feeOn-time88%
Search T'way Air flights
Thai AirAsia XCheapest$272Average$353FlexibilityNo cancel feeOn-timeN/A
Search Thai AirAsia X flights
China EasternCheapest$313Average$486FlexibilityNo cancel feeOn-time62%
Search China Eastern flights
Asiana AirlinesCheapest$447Average$455FlexibilityNo cancel feeOn-time76%
Search Asiana Airlines flights
Korean AirCheapest$528Average$602FlexibilityNo cancel feeOn-time81%
Search Korean 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.

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.