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Cheap flights from Seoul to Southeast Asia from $138

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 22/9. Fares are subject to change and may not be available on all flights or dates of travel.
SEL — BKK
28 Apr — 5 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 23 April 2025.

Round-trip from

$214

One-way from

$173

Popular in

January

Cheapest in

June

Average price

$377
T'way Air
  • T'way Air
  • 16/5-18/5
  • 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. 17% potential increase in price ($146 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 23 April 2025.

Tue 13/518:00ICN - BKK
Nonstop6h 35mT'way Air
Mon 26/500:05BKK - ICN
Nonstop5h 35mT'way Air
Deal found 22/4$216
Sun 18/520:05ICN - BKK
Nonstop5h 54mJeju Air
Wed 21/501:00BKK - ICN
Nonstop5h 40mJeju Air
Deal found 22/4$217
Thu 22/516:50ICN - BKK
Nonstop6h 20mAIR PREMIA
Tue 27/522:45BKK - ICN
Nonstop5h 40mAIR PREMIA
Deal found 22/4$222
Tue 17/618:05ICN - BKK
1 stop22h 40mVietnam Airlines
Fri 20/611:55BKK - ICN
1 stop26h 40mVietnam Airlines
Deal found 20/4$242
Tue 17/617:15ICN - BKK
Nonstop6h 05mAir Busan
Fri 20/622:20BKK - ICN
Nonstop5h 45mAir Busan
Deal found 20/4$255
Mon 1/919:55ICN - BKK
Nonstop5h 50mJin Air
Wed 3/900:55BKK - ICN
Nonstop5h 30mJin Air
Deal found 22/4$294
Sun 18/515:40ICN - DPS
Nonstop7h 05mJeju Air
Tue 27/522:45DPS - ICN
Nonstop7h 25mJeju Air
Deal found 22/4$400
Wed 4/607:20ICN - BKK
Nonstop5h 35mAsiana Airlines
Mon 4/811:55BKK - ICN
Nonstop5h 45mAsiana Airlines
Deal found 22/4$408
Mon 29/910:35ICN - DPS
1 stop29h 25mVietnam Airlines
Tue 14/1016:00DPS - ICN
1 stop23h 25mVietnam Airlines
Deal found 21/4$428
Tue 10/616:45ICN - DPS
1 stop31h 45mChina Southern
Sun 15/600:30DPS - ICN
1 stop13h 55mChina Southern
Deal found 23/4$430
Tue 10/622:35ICN - DPS
2 stops21h 05mScoot
Mon 16/614:00DPS - ICN
2 stops30h 20mScoot
Deal found 23/4$448
Fri 2/520:30ICN - BKK
1 stop17h 45mPhilippine Airlines
Thu 8/518:40BKK - ICN
1 stop22h 40mPhilippine Airlines
Deal found 21/4$450

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 23 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

Tue 13/5

18:00-22:35

Nonstop6h 35m

Bangkok Suvarnabhumi

Sat 17/5

00:05-07:40

Nonstop5h 35m

$216

IncheonBangkok

ICN - BKK

ICNBKK

Incheon Intl

Sun 18/5

20:05-23:59

Nonstop5h 54m

Bangkok Suvarnabhumi

Wed 21/5

01:00-08:40

Nonstop5h 40m

$217

IncheonBangkok

ICN - BKK

ICNBKK

Incheon Intl

Thu 22/5

16:50-21:10

Nonstop6h 20m

Bangkok Suvarnabhumi

Tue 27/5

22:45-06:25

Nonstop5h 40m

$222

IncheonBangkok

ICN - BKK

ICNBKK

Incheon Intl

Tue 17/6

18:05-14:45

1 stop22h 40m

Bangkok Suvarnabhumi

Fri 20/6

11:55-16:35

1 stop26h 40m

$242

IncheonBangkok

ICN - BKK

ICNBKK

Incheon Intl

Tue 17/6

17:15-21:20

Nonstop6h 05m

Bangkok Suvarnabhumi

Fri 20/6

22:20-06:05

Nonstop5h 45m

$255

IncheonBangkok

ICN - BKK

ICNBKK

Incheon Intl

Mon 8/9

19:55-23:45

Nonstop5h 50m

Bangkok Suvarnabhumi

Thu 11/9

00:55-08:25

Nonstop5h 30m

$283

IncheonBangkok

ICN - BKK

ICNBKK

Incheon Intl

Wed 18/6

07:20-10:55

Nonstop5h 35m

Bangkok Suvarnabhumi

Mon 23/6

11:55-19:40

Nonstop5h 45m

$380

IncheonBangkok

ICN - BKK

ICNBKK

Incheon Intl

Mon 12/5

14:40-02:15

1 stop13h 35m

Bangkok Suvarnabhumi

Wed 21/5

19:30-15:40

1 stop18h 10m

$391

IncheonDenpasar

ICN - DPS

ICNDPS

Incheon Intl

Sun 18/5

15:40-21:45

Nonstop7h 05m

Denpasar Bali Ngurah Rai

Tue 27/5

22:45-07:10

Nonstop7h 25m

$400

IncheonDenpasar

ICN - DPS

ICNDPS

Incheon Intl

Mon 29/9

10:35-15:00

1 stop29h 25m

Denpasar Bali Ngurah Rai

Tue 14/10

16:00-16:25

1 stop23h 25m

$428

Flights are sorted by cheapest return flights first.

Deals found on 22/4

Showing 1-10 of 49 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 23 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 23 April 2025.

The most flights from SEL to zzYJX are scheduled on a Monday (29 on average). You will have fewer flight options on Thursday, which is when the least amount of flights are scheduled (19 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 23 April 2025.
Peruse reviews from past customers who have flown with EVA Air, Korean Air 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.
EVA Air
8.4
Very Good
1,180 reviews
Check prices

Food

8.1

Crew

8.6

Comfort

8.3

Boarding

8.4

Entertainment

8.0

Overall

8.4

Reviews

1 / 20
10.0
Excellent

Gary,Apr 2025

DPS - TPE

The staff was excellent. Kind, courteous, and overall just hospitable. Definitely recommend
EVA Air
8.4
Very Good
1,180 reviews
EVA Air
8.4
Very Good
1,180 reviews
Check prices

Food

8.1

Crew

8.6

Comfort

8.3

Boarding

8.4

Entertainment

8.0

Overall

8.4

Reviews

1 / 20
10.0
Excellent

Gary,Apr 2025

DPS - TPE

The staff was excellent. Kind, courteous, and overall just hospitable. Definitely recommend
Korean Air
8.4
Very Good
1,062 reviews
EVA Air
8.4
Very Good
1,180 reviews
Check prices

Food

8.1

Crew

8.6

Comfort

8.3

Boarding

8.4

Entertainment

8.0

Overall

8.4

Reviews

1 / 20
10.0
Excellent

Gary,Apr 2025

DPS - TPE

The staff was excellent. Kind, courteous, and overall just hospitable. Definitely recommend
AIR PREMIA
8.2
Very Good
EVA Air
8.4
Very Good
1,180 reviews
Check prices

Food

8.1

Crew

8.6

Comfort

8.3

Boarding

8.4

Entertainment

8.0

Overall

8.4

Reviews

1 / 20
10.0
Excellent

Gary,Apr 2025

DPS - TPE

The staff was excellent. Kind, courteous, and overall just hospitable. Definitely recommend
Asiana Airlines
8.2
Very Good
442 reviews
EVA Air
8.4
Very Good
1,180 reviews
Check prices

Food

8.1

Crew

8.6

Comfort

8.3

Boarding

8.4

Entertainment

8.0

Overall

8.4

Reviews

1 / 20
10.0
Excellent

Gary,Apr 2025

DPS - TPE

The staff was excellent. Kind, courteous, and overall just hospitable. Definitely 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 $173 on AIR PREMIA. Other airlines that offer cheap prices include Jeju Air from $177 and Jin Air from $180 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 $558, our data indicates the cheapest price to be $156. The most popular route (Incheon Intl - Bangkok Suvarnabhumi), is priced around $366.

  • 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 23 April 2025.
AirlineCheapestAverageFlexibilityOn-time
Thai AirAsia XCheapest$272Average$435FlexibilityNo cancel feeOn-timeN/A
Search Thai AirAsia X flights
China EasternCheapest$307Average$478FlexibilityNo cancel feeOn-time62%
Search China Eastern flights
Asiana AirlinesCheapest$440Average$447FlexibilityNo cancel feeOn-time76%
Search Asiana Airlines flights
Korean AirCheapest$520Average$595FlexibilityNo 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?

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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