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Cheap flights from Seoul to Southeast Asia from $194

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 5/6. Fares are subject to change and may not be available on all flights or dates of travel.
SEL — BKK
5 May — 12 May1
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 30 April 2025.

Round-trip from

$212

One-way from

$194

Popular in

January

Cheapest in

May

Average price

$375
T'way Air
  • T'way Air
  • 14/7-18/7
  • Nonstop
  • 12h 10m total
  • Seoul to Southeast Asia
Search Deals
AIR PREMIA
  • AIR PREMIA
  • 5/6
  • Nonstop
  • 6h 20m total
  • Seoul to Southeast Asia
Search Deals
Highest demand for flights based on searches. 18% potential increase in price ($148 potential increase over avg. return price).
Search Deals
Cheapest flight prices on average. 3% potential price decrease ($24 potential savings vs. average return price).
Search Deals
Average for round-trip flights in April 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 30 April 2025.

Mon 14/718:00ICN - BKK
Nonstop6h 35mT'way Air
Fri 18/700:05BKK - ICN
Nonstop5h 35mT'way Air
Deal found 29/4$212
Mon 26/520:05ICN - BKK
Nonstop5h 54mJeju Air
Wed 4/601:00BKK - ICN
Nonstop5h 40mJeju Air
Deal found 29/4$214
Thu 8/516:50ICN - BKK
Nonstop6h 20mAIR PREMIA
Wed 14/522:45BKK - ICN
Nonstop5h 40mAIR PREMIA
Deal found 29/4$220
Sat 17/519:55ICN - BKK
Nonstop5h 50mJin Air
Fri 23/500:55BKK - ICN
Nonstop5h 30mJin Air
Deal found 29/4$269
Fri 4/710:05ICN - BKK
1 stop10h 00mVietnam Airlines
Tue 8/719:05BKK - ICN
1 stop8h 45mVietnam Airlines
Deal found 29/4$273
Sat 23/817:30ICN - BKK
Nonstop5h 50mEastar Jet
Tue 2/922:20BKK - ICN
Nonstop5h 40mEastar Jet
Deal found 29/4$345
Wed 4/607:20ICN - BKK
Nonstop5h 35mAsiana Airlines
Mon 4/811:55BKK - ICN
Nonstop5h 45mAsiana Airlines
Deal found 29/4$387
Sun 6/710:35ICN - DPS
1 stop29h 25mVietnam Airlines
Tue 15/716:00DPS - ICN
1 stop23h 25mVietnam Airlines
Deal found 28/4$397
Fri 16/515:40ICN - DPS
Nonstop7h 05mJeju Air
Thu 22/522:45DPS - ICN
Nonstop7h 25mJeju Air
Deal found 29/4$400
Wed 29/1007:00ICN - DPS
1 stop29h 55mVietJet Air
Wed 12/1115:35DPS - ICN
1 stop17h 15mVietJet Air
Deal found 30/4$426
Wed 28/500:10ICN - DPS
1 stop19h 20mMalaysia Airlines
Fri 13/616:25DPS - ICN
1 stop27h 00mMalaysia Airlines
Deal found 30/4$443
Wed 4/600:10ICN - BKK
1 stop12h 05mMalaysia Airlines
Wed 11/618:40BKK - ICN
1 stop10h 30mMalaysia Airlines
Deal found 29/4$451

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 30 April 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 14/7

18:00-22:35

Nonstop6h 35m

Bangkok Suvarnabhumi

Fri 18/7

00:05-07:40

Nonstop5h 35m

$212

IncheonBangkok

ICN - BKK

ICNBKK

Incheon Intl

Mon 26/5

20:05-23:59

Nonstop5h 54m

Bangkok Suvarnabhumi

Wed 4/6

01:00-08:40

Nonstop5h 40m

$214

IncheonBangkok

ICN - BKK

ICNBKK

Incheon Intl

Thu 15/5

16:50-21:10

Nonstop6h 20m

Bangkok Suvarnabhumi

Thu 22/5

22:45-06:25

Nonstop5h 40m

$262

IncheonBangkok

ICN - BKK

ICNBKK

Incheon Intl

Sat 17/5

19:55-23:45

Nonstop5h 50m

Bangkok Suvarnabhumi

Fri 23/5

00:55-08:25

Nonstop5h 30m

$269

IncheonBangkok

ICN - BKK

ICNBKK

Incheon Intl

Fri 4/7

10:05-18:05

1 stop10h 00m

Bangkok Suvarnabhumi

Tue 8/7

19:05-05:50

1 stop8h 45m

$273

IncheonBangkok

ICN - BKK

ICNBKK

Incheon Intl

Sat 14/6

16:45-12:50

1 stop22h 05m

Bangkok Suvarnabhumi

Fri 20/6

03:00-21:50

1 stop16h 50m

$304

IncheonBangkok

ICN - BKK

ICNBKK

Incheon Intl

Sat 23/8

17:30-21:20

Nonstop5h 50m

Bangkok Suvarnabhumi

Wed 3/9

22:20-06:00

Nonstop5h 40m

$345

IncheonBangkok

ICN - BKK

ICNBKK

Incheon Intl

Wed 4/6

07:20-10:55

Nonstop5h 35m

Bangkok Suvarnabhumi

Mon 4/8

11:55-19:40

Nonstop5h 45m

$387

IncheonDenpasar

ICN - DPS

ICNDPS

Incheon Intl

Sun 6/7

10:35-15:00

1 stop29h 25m

Denpasar Bali Ngurah Rai

Tue 15/7

16:00-16:25

1 stop23h 25m

$397

IncheonDenpasar

ICN - DPS

ICNDPS

Incheon Intl

Fri 16/5

15:40-21:45

Nonstop7h 05m

Denpasar Bali Ngurah Rai

Thu 22/5

22:45-07:10

Nonstop7h 25m

$400

Flights are sorted by cheapest return flights first.

Deals found on 28/4

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, 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 30 April 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 30 April 2025.

The most flights from SEL to zzYJX are scheduled on a Wednesday (34 on average). You will have fewer flight options on Friday, which is when the least amount of flights are scheduled (29 on average).

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 30 April 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
1,066 reviews
Check prices

Crew

8.7

Boarding

8.5

Food

8.1

Overall

8.4

Comfort

8.3

Entertainment

8.2

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
1,066 reviews
Korean Air
8.4
Very Good
1,066 reviews
Check prices

Crew

8.7

Boarding

8.5

Food

8.1

Overall

8.4

Comfort

8.3

Entertainment

8.2

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
442 reviews
Korean Air
8.4
Very Good
1,066 reviews
Check prices

Crew

8.7

Boarding

8.5

Food

8.1

Overall

8.4

Comfort

8.3

Entertainment

8.2

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
1,066 reviews
Check prices

Crew

8.7

Boarding

8.5

Food

8.1

Overall

8.4

Comfort

8.3

Entertainment

8.2

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
8.1
Very Good
72 reviews
Korean Air
8.4
Very Good
1,066 reviews
Check prices

Crew

8.7

Boarding

8.5

Food

8.1

Overall

8.4

Comfort

8.3

Entertainment

8.2

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 $194 on AIR PREMIA. Other airlines that offer cheap prices include Jeju Air from $195 and T'way Air from $211 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(86%), Turkish Airlines(86%) or EL AL(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 $478, our data indicates the cheapest price to be $155. The most popular route (Incheon Intl - Bangkok Suvarnabhumi), is priced around $365.

  • 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 30 April 2025.
AirlineCheapestAverageFlexibilityOn-time
Thai AirAsia XCheapest$229Average$346FlexibilityNo cancel feeOn-timeN/A
Search Thai AirAsia X flights
China EasternCheapest$307Average$477FlexibilityNo cancel feeOn-time62%
Search China Eastern flights
Asiana AirlinesCheapest$439Average$447FlexibilityNo cancel feeOn-time76%
Search Asiana Airlines flights
Korean AirCheapest$519Average$594FlexibilityNo cancel feeOn-time81%
Search Korean Air flights

Fly with Cheapflights

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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?

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Can Cheapflights find flights from Seoul to Southeast Asia with no change fees?

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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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