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 55m. Fly via Jeju Air, AIR PREMIA, or Vietnam Airlines 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 $92 on Cebu Pacific. Other airlines that offer cheap prices include Jeju Air from $98 and Philippine Airlines from $145 one-way.

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.

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).

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 $358, our data indicates the cheapest price to be $144. The most popular route (Incheon Intl - Bangkok Suvarnabhumi), is priced around $613.

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 PREMIA(100%), Kuwait Airways(98%) or EL AL(95%), as they are the most reliable in getting you off to your destination on time.

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.

$146+ Cheap Flights from Seoul to Southeast Asia

Cheap flight deals from Seoul to Southeast Asia

Enter your travel dates to find the best prices.

Cheapest

Best

Direct

Last-minute

One-way

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 13 August 2026.

Tue 15/920:05 -

Nonstop6h 05m

Thu 17/901:10 -

Nonstop5h 45m

Deal found 10/8$296

Sun 30/818:00 -

Nonstop6h 05m

Thu 3/900:05 -

Nonstop5h 35m

Deal found 11/8$303

Mon 31/818:00 -

Nonstop6h 05m

Thu 3/900:05 -

Nonstop5h 35m

Deal found 12/8$304

Sun 27/919:55 -

Nonstop5h 50m

Tue 29/900:45 -

Nonstop5h 40m

Deal found 11/8$307

Sun 27/919:55 -

Nonstop5h 50m

Mon 28/900:45 -

Nonstop5h 40m

Deal found 10/8$309

Thu 20/820:05 -

Nonstop6h 05m

Wed 9/901:10 -

Nonstop5h 45m

Deal found 12/8$310

Mon 17/820:05 -

Nonstop6h 05m

Wed 19/801:10 -

Nonstop5h 45m

Deal found 10/8$311

Sun 30/820:05 -

Nonstop6h 05m

Sat 5/901:10 -

Nonstop5h 45m

Deal found 7/8$314

Tue 1/917:15 -

Nonstop5h 55m

Thu 3/922:45 -

Nonstop5h 30m

Deal found 12/8$316

Sun 6/917:15 -

Nonstop5h 55m

Thu 17/922:45 -

Nonstop5h 30m

Deal found 10/8$317

Mon 2/1119:50 -

Nonstop6h 20m

Fri 6/1101:30 -

Nonstop5h 30m

Deal found 12/8$318

Mon 2/1119:50 -

Nonstop6h 20m

Thu 5/1101:30 -

Nonstop5h 30m

Deal found 10/8$320

Best flights from Seoul to Southeast Asia
Discover carefully curated flight deals from Seoul to Southeast Asia that have cost, travel time, and stopovers in mind to ensure you get the best travel experience. Data last updated 13 August 2026.

Sun 20/920:05 -

Nonstop6h 05m

Wed 30/901:10 -

Nonstop5h 45m

Deal found 8/8$321

Fri 4/917:15 -

Nonstop5h 55m

Tue 8/922:45 -

Nonstop5h 30m

Deal found 7/8$327

Wed 21/1018:05 -

1 stop22h 40m

Wed 4/1121:15 -

1 stop17h 10m

Deal found 12/8$364

Mon 19/1018:05 -

1 stop22h 40m

Sun 1/1119:35 -

1 stop18h 50m

Deal found 10/8$367

Thu 24/920:05 -

Nonstop6h 05m

Wed 30/901:10 -

Nonstop5h 45m

Deal found 10/8$368

Sat 5/900:10 -

1 stop19h 20m

Mon 21/916:25 -

1 stop13h 45m

Deal found 8/8$788

Thu 1/1020:05 -

Nonstop6h 05m

Sat 3/1001:10 -

Nonstop5h 45m

Deal found 10/8$369

Thu 15/1017:55 -

1 stop18h 25m

Wed 21/1015:55 -

1 stop11h 55m

Deal found 12/8$372

Wed 16/920:05 -

Nonstop6h 05m

Fri 18/901:10 -

Nonstop5h 45m

Deal found 9/8$378

Mon 16/1118:05 -

1 stop19h 15m

Thu 26/1118:00 -

1 stop9h 45m

Deal found 11/8$382

Wed 16/900:30 -

1 stop18h 35m

Mon 21/922:15 -

1 stop16h 20m

Deal found 10/8$386

Thu 17/920:05 -

Nonstop6h 05m

Fri 25/901:10 -

Nonstop5h 45m

Deal found 10/8$391

Wed 9/917:55 -

1 stop21h 15m

Sat 12/919:05 -

1 stop8h 45m

Deal found 10/8$396

Sun 22/1110:35 -

1 stop29h 25m

Sat 28/1116:05 -

1 stop23h 20m

Deal found 11/8$440

Mon 9/1110:35 -

1 stop29h 25m

Mon 16/1116:05 -

1 stop23h 20m

Deal found 10/8$442

Wed 18/1115:10 -

Nonstop7h 40m

Wed 25/1123:05 -

Nonstop7h 05m

Deal found 8/8$593

Wed 25/1110:35 -

1 stop29h 25m

Sun 29/1116:05 -

1 stop23h 20m

Deal found 12/8$470

Wed 2/915:40 -

Nonstop7h 05m

Wed 23/922:45 -

Nonstop7h 30m

Deal found 12/8$709

Wed 18/1117:55 -

1 stop22h 05m

Wed 25/1116:05 -

2 stops23h 25m

Deal found 8/8$606

Wed 2/915:40 -

Nonstop7h 05m

Sun 13/922:45 -

Nonstop7h 30m

Deal found 12/8$743

Fri 4/915:40 -

Nonstop7h 05m

Mon 14/922:45 -

Nonstop7h 30m

Deal found 8/8$776

Wed 18/1110:35 -

1 stop29h 25m

Sun 22/1116:05 -

2 stops23h 25m

Deal found 12/8$669

Find flight deals from Seoul to Southeast Asia

Round-trip from	$296
One-way from	$146
Popular in	July
Cheapest in	September
Average price	$361

Jeju Air
15/9-20/9
Nonstop
11h 50m total
Seoul to Southeast Asia

Search Deals

AIR PREMIA
1/9
Nonstop
5h 55m total
Seoul to Southeast Asia

Search Deals

Highest demand for flights based on searches. 11% potential increase in price ($73 potential increase over avg. return price).

Search Deals

Cheapest flight prices on average. 2% potential price decrease ($13 potential savings vs. average return price).

Search Deals

Average for round-trip flights in August 2026

Search Deals

Fly from

Fly to

Route

Depart

Return

Price

Cheapest return flight

IncheonBangkok

ICN Incheon Intl - BKK Bangkok Suvarnabhumi

ICNBKK

Incheon Intl

Sun 20/9

20:05-00:10

Nonstop6h 05m

Bangkok Suvarnabhumi

Wed 30/9

01:10-08:55

Nonstop5h 45m

$321

Fastest return journey

IncheonBangkok

ICN Incheon Intl - BKK Bangkok Suvarnabhumi

ICNBKK

Incheon Intl

Fri 4/9

17:15-21:10

Nonstop5h 55m

Bangkok Suvarnabhumi

Tue 8/9

22:45-06:15

Nonstop5h 30m

$327

IncheonBangkok

ICN Incheon Intl - BKK Bangkok Suvarnabhumi

ICNBKK

Incheon Intl

Wed 21/10

18:05-14:45

1 stop22h 40m

Bangkok Suvarnabhumi

Wed 4/11

21:15-16:25

1 stop17h 10m

$364

IncheonBangkok

ICN Incheon Intl - BKK Bangkok Suvarnabhumi

ICNBKK

Incheon Intl

Mon 19/10

18:05-14:45

1 stop22h 40m

Bangkok Suvarnabhumi

Sun 1/11

19:35-16:25

1 stop18h 50m

$367

IncheonBangkok

ICN Incheon Intl - BKK Bangkok Suvarnabhumi

ICNBKK

Incheon Intl

Thu 24/9

20:05-00:10

Nonstop6h 05m

Bangkok Suvarnabhumi

Wed 30/9

01:10-08:55

Nonstop5h 45m

$368

IncheonBangkok

ICN Incheon Intl - BKK Bangkok Suvarnabhumi

ICNBKK

Incheon Intl

Thu 1/10

20:05-00:10

Nonstop6h 05m

Bangkok Suvarnabhumi

Sat 3/10

01:10-08:55

Nonstop5h 45m

$369

IncheonBangkok

ICN Incheon Intl - BKK Bangkok Suvarnabhumi

ICNBKK

Incheon Intl

Thu 15/10

17:55-10:20

1 stop18h 25m

Bangkok Suvarnabhumi

Wed 21/10

15:55-05:50

1 stop11h 55m

$372

IncheonBangkok

ICN Incheon Intl - BKK Bangkok Suvarnabhumi

ICNBKK

Incheon Intl

Wed 16/9

20:05-00:10

Nonstop6h 05m

Bangkok Suvarnabhumi

Fri 18/9

01:10-08:55

Nonstop5h 45m

$378

IncheonBangkok

ICN Incheon Intl - BKK Bangkok Suvarnabhumi

ICNBKK

Incheon Intl

Mon 16/11

18:05-11:20

1 stop19h 15m

Bangkok Suvarnabhumi

Thu 26/11

18:00-05:45

1 stop9h 45m

$382

IncheonBangkok

ICN Incheon Intl - BKK Bangkok Suvarnabhumi

ICNBKK

Incheon Intl

Wed 16/9

00:30-17:05

1 stop18h 35m

Bangkok Suvarnabhumi

Mon 21/9

22:15-16:35

1 stop16h 20m

$386

Flights are sorted by cheapest return flights first.

Deals found on 11/8

Showing 1-10 of 43 resultsSorted by cheapest first

...

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.

ICN-BKK

ICN-DPS

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

SEL-zzYJX

ICN-BKK

ICN-DPS

What is the cheapest month to book a flight from Seoul to Southeast Asia?

Currently, September is the cheapest month in which you can book a flight from Seoul to Southeast Asia (average of $316). Flying from Seoul to Southeast Asia in July is currently the most expensive (average of $450). 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?

A simple way to save on the total cost of your ticket is to fly from Seoul to Southeast Asia in the evening. If you’re flexible enough to do this you can expect to save up to 21% on your trip compared to booking a flight in the afternoon.

Weekly flight availability from Seoul to Southeast Asia

The most flights from SEL to zzYJX are scheduled on a Tuesday (40 on average). You will have fewer flight options on Friday, which is when the least amount of flights are scheduled (37 on average).

How far ahead should I book a flight from Seoul to Southeast Asia?

The price you pay for your flight from Seoul to Southeast Asia may vary depending on when you book. For the best chance of a lower fare, look to book 70 days in advance of your trip. Fares are likely to increase a fortnight or so before your departure date.

Reviews of airlines servicing Southeast Asia

Read through reviews of airlines operating flights from Seoul to Southeast Asia, such as 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.

VietJet Air

5.6

Fair

173 reviews

Check prices

Reviews

1 / 7

10.0

Excellent

xuan-anh,Apr 2026

SGN - SYD

Check in was too long (58 mn). Online check in wasn’t available on this flight (VJ85).

VietJet Air

5.6

Fair

173 reviews

VietJet Air

5.6

Fair

173 reviews

Check prices

Reviews

1 / 7

10.0

Excellent

xuan-anh,Apr 2026

SGN - SYD

Check in was too long (58 mn). Online check in wasn’t available on this flight (VJ85).

Related info for your journey

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 55m. Fly via Jeju Air, AIR PREMIA, or Vietnam Airlines 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 $92 on Cebu Pacific. Other airlines that offer cheap prices include Jeju Air from $98 and Philippine Airlines from $145 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 PREMIA(100%), Kuwait Airways(98%) or EL AL(95%), 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 $358, our data indicates the cheapest price to be $144. The most popular route (Incheon Intl - Bangkok Suvarnabhumi), is priced around $613.
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, September is the cheapest month in which you can book a flight from Seoul to Southeast Asia (average of $316). Flying from Seoul to Southeast Asia in July is currently the most expensive (average of $450). 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

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Alternative routes for Seoul to Southeast Asia

Busan to Jeju City flights

Busan to Taiwan Taoyuan Intl flights

Incheon Intl to Taiwan Taoyuan Intl flights

Incheon Intl to Denpasar flights

Incheon Intl to Suvarnabhumi flights

Incheon Intl to Hong Kong flights

Incheon Intl to Narita flights

Top airline flying from Seoul to Southeast Asia

Airline	Cheapest	Average	Flexibility	On-time
VietJet Air	Cheapest$256	Average$398	FlexibilityNo cancel fee	On-timeN/A	Search VietJet Air flights

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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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Cheap flights from Seoul to Southeast Asia from $146

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 1/9. Fares are subject to change and may not be available on all flights or dates of travel.

Cheap flight deals from Seoul to Southeast Asia

Cheapest flights from Seoul to Southeast AsiaExplore 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 13 August 2026.

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 13 August 2026.

Best flights from Seoul to Southeast AsiaDiscover carefully curated flight deals from Seoul to Southeast Asia that have cost, travel time, and stopovers in mind to ensure you get the best travel experience. Data last updated 13 August 2026.

Discover carefully curated flight deals from Seoul to Southeast Asia that have cost, travel time, and stopovers in mind to ensure you get the best travel experience. Data last updated 13 August 2026.

Direct flights from Seoul to Southeast AsiaExplore direct flight options from Seoul to Southeast Asia based on user searches, and compare prices and availability for your desired travel dates. Data last updated 13 August 2026.

Explore direct flight options from Seoul to Southeast Asia based on user searches, and compare prices and availability for your desired travel dates. Data last updated 13 August 2026.

Last-minute flights from Seoul to Southeast AsiaDiscover last-minute flight deals from Seoul to Southeast Asia. Data last updated 13 August 2026 and is based on user searches.

Discover last-minute flight deals from Seoul to Southeast Asia. Data last updated 13 August 2026 and is based on user searches.

One-way flights from Seoul to Southeast AsiaSearch for one-way flight options from Seoul to Southeast Asia. Find affordable one-way fares based on user searches. Data last updated 13 August 2026.

Search for one-way flight options from Seoul to Southeast Asia. Find affordable one-way fares based on user searches. Data last updated 13 August 2026.

Find flight deals from Seoul to Southeast Asia

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One-way from

Popular in

Cheapest in

Average price

Cheapflights Fare Finder

Use the filters below to find and compare flights from Seoul to Southeast Asia that are best for you.

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.

Cheapflights Insights

What is the cheapest month to book a flight from Seoul to Southeast Asia?

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 13 August 2026.

A simple way to save on the total cost of your ticket is to fly from Seoul to Southeast Asia in the evening. If you’re flexible enough to do this you can expect to save up to 21% 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 13 August 2026.

The most flights from SEL to zzYJX are scheduled on a Tuesday (40 on average). You will have fewer flight options on Friday, which is when the least amount of flights are scheduled (37 on average).

How far ahead should I book a flight from Seoul to Southeast Asia?

The price you pay for your flight from Seoul to Southeast Asia may vary depending on when you book. For the best chance of a lower fare, look to book 70 days in advance of your trip. Fares are likely to increase a fortnight or so before your departure date.

Reviews of airlines servicing Southeast Asia

Read through reviews of airlines operating flights from Seoul to Southeast Asia, such as 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.

Related info for your journey

How long is the flight from Seoul to Southeast Asia?

What are the cheapest airlines to fly from Seoul to Southeast Asia one-way?

What are the most reliable airlines from Seoul to Southeast Asia?

What are the cheapest flights from Seoul to Southeast Asia?

Can I find deals for flights from Seoul to Southeast Asia that include hotel bookings?

How can I find direct flights from Seoul to Southeast Asia?

Can I find deals for business class flights from Seoul to Southeast Asia?

What is the cheapest month to book a flight from Seoul to Southeast Asia?

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.

Alternative routes for Seoul to Southeast Asia

See prices for flight routes from nearby airports that may be better suited for you.

Complete your trip

Complete your trip to Southeast Asia by adding a car hire and/or hotel booking to your travel itinerary.

Direct flights to

Book a non-stop flight to one of these other cities located in .

Search flights from Seoul to Southeast Asia by cabin class

Find flights from Seoul to Southeast Asia, based on your preferred cabin class, be it economy, premium economy, business, or first class.

Seoul and Southeast Asia flights

Browse other Seoul and Southeast Asia flight options. Last updated on 13 August 2026.

Popular flight searches

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Top airline flying from Seoul to Southeast Asia

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How does Cheapflights help users find flights from Seoul to Southeast Asia?

Why should you use Cheapflights to find cheap flight tickets from Seoul to Southeast Asia?

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

Can Cheapflights notify me if prices for flights from Seoul to Southeast Asia become cheaper?

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Travel Smart

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 13 August 2026.

Best flights from Seoul to Southeast Asia
Discover carefully curated flight deals from Seoul to Southeast Asia that have cost, travel time, and stopovers in mind to ensure you get the best travel experience. Data last updated 13 August 2026.

Direct flights from Seoul to Southeast Asia
Explore direct flight options from Seoul to Southeast Asia based on user searches, and compare prices and availability for your desired travel dates. Data last updated 13 August 2026.

Last-minute flights from Seoul to Southeast Asia
Discover last-minute flight deals from Seoul to Southeast Asia. Data last updated 13 August 2026 and is based on user searches.

One-way flights from Seoul to Southeast Asia
Search for one-way flight options from Seoul to Southeast Asia. Find affordable one-way fares based on user searches. Data last updated 13 August 2026.