฿3,914 Find Cheap Flights from Seoul to Southeast Asia

This is the cheapest one-way flight price found by a KAYAK user in the last 72 hours by searching for a flight from Seoul to Southeast Asia departing on 23/7. Fares are subject to change and may not be available on all flights or dates of travel. Click the price to replicate the search for this deal.
1 adult
1 adult, Economy, 0 bags

KAYAK searches hundreds of travel sites at once for deals on flights to Southeast Asia

 
These are the airlines KAYAK users have selected most often from within our search results in flight searches from Seoul to Southeast Asia, as well as popular online travel agencies
These are the airlines KAYAK users have selected most often from within our search results in flight searches from Seoul to Southeast Asia, as well as popular online travel agencies
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Flight Deals

Best Southeast Asia Flight Deals from Seoul

Cheapest return prices found by our users on KAYAK in the last 72 hours
Bangkok
Bangkok1 stop฿7,630
Chiang Mai
Chiang Maidirect฿8,617
Phuket City
Phuket City1 stop฿9,044
Krabi
Krabi1 stop฿10,952
Ko Samui
Ko Samui1 stop฿13,386
Chiang Rai
Chiang Rai1 stop฿12,169
Surat Thani
Surat Thani1 stop฿17,069
Bangkok
Bangkok1 stop฿7,630
Chiang Mai
Chiang Maidirect฿8,617
Phuket City
Phuket City1 stop฿9,044
Krabi
Krabi1 stop฿10,952
Ko Samui
Ko Samui1 stop฿13,386
Chiang Rai
Chiang Rai1 stop฿12,169
Surat Thani
Surat Thani1 stop฿17,069

Cheap Flights from Seoul to Southeast Asia

 
Here are some of the best deals found on KAYAK recently from the most popular airlines for return flights from Seoul to Southeast Asia that are departing in the next months. While these flights were available on KAYAK in the last 72 hours, prices and availability are subject to change and deals may expire.
Discover the best prices for you by selecting your travel dates on KAYAK.

Recent return flight deals from Seoul to Southeast Asia

Thu 25 Jun - Thu 23 Jul
Shandong Airlines Logo
08:35 - 01:25
ICN
-
BKK
18h 50m
1 stop
Shandong Airlines Logo
02:25 - 21:15
BKK
-
ICN
16h 50m
1 stop
฿7,630Shandong Airlines
Thu 25 Jun - Tue 14 Jul
Shandong Airlines Logo
22:55 - 01:50
ICN
-
BKK
28h 55m
1 stop
Shandong Airlines Logo
02:50 - 14:30
BKK
-
ICN
9h 40m
1 stop
฿7,663Shandong Airlines
Sun 28 Jun - Fri 3 Jul
Shandong Airlines Logo
22:55 - 01:50
ICN
-
BKK
28h 55m
1 stop
Shandong Airlines Logo
02:25 - 23:50
BKK
-
ICN
19h 25m
1 stop
฿7,696Shandong Airlines
Sat 18 Jul - Thu 23 Jul
Eastar Jet Logo
18:30 - 22:40
ICN
-
CNX
6h 10mdirect
Eastar Jet Logo
23:55 - 07:10
CNX
-
ICN
5h 15mdirect
฿8,617Eastar Jet
Sun 19 Jul - Wed 22 Jul
Multiple Airlines Logo
19:55 - 23:50
ICN
-
CNX
5h 55mdirect
Multiple Airlines Logo
23:55 - 07:10
CNX
-
ICN
5h 15mdirect
฿8,650Multiple Airlines
Thu 9 Jul - Thu 16 Jul
Eastar Jet Logo
18:30 - 22:40
ICN
-
CNX
6h 10mdirect
Eastar Jet Logo
23:55 - 07:10
CNX
-
ICN
5h 15mdirect
฿8,683Eastar Jet
Sat 18 Jul - Sun 26 Jul
Air Busan Logo
19:55 - 23:50
ICN
-
CNX
5h 55mdirect
Air Busan Logo
00:50 - 08:15
CNX
-
ICN
5h 25mdirect
฿8,715Air Busan
Sun 23 Aug - Wed 26 Aug
Jeju Air Logo
18:10 - 22:00
ICN
-
CNX
5h 50mdirect
Jeju Air Logo
23:00 - 06:30
CNX
-
ICN
5h 30mdirect
฿8,814Jeju Air
Thu 20 Aug - Wed 26 Aug
Jeju Air Logo
18:10 - 22:00
ICN
-
CNX
5h 50mdirect
Jeju Air Logo
23:00 - 06:30
CNX
-
ICN
5h 30mdirect
฿8,847Jeju Air
Sat 22 Aug - Wed 26 Aug
Multiple Airlines Logo
18:30 - 22:40
ICN
-
CNX
6h 10mdirect
Multiple Airlines Logo
23:00 - 06:30
CNX
-
ICN
5h 30mdirect
฿8,880Multiple Airlines
Booking Insights

KAYAK's insights & trends for Seoul to Southeast Asia flights

Get data-powered insights and trends into flights from Seoul to Southeast Asia to help you find the cheapest flights, the best time to fly, and much more.

What is the cheapest Seoul to Southeast Asia flight route?

Data is based on round-trip flight searches on KAYAK over the past month.

The cheapest ticket to Southeast Asia from Seoul found in the last 72 hours was to Da Nang, at ฿4,810 return. The most popular route is from Incheon Intl Airport (ICN) to Chiang Mai (CNX), and the cheapest round-trip airline ticket found on this route in the last 5 days was ฿8,804.

What is the cheapest time of day to fly to Southeast Asia?

The average price for all round-trip flights from Seoul to Southeast Asia depending on the time of departure, clicked by users on KAYAK in the last 2 weeks.

The cheapest time of day to fly to Southeast Asia is generally in the evening, when retur flights cost ฿7,871 on average. Morning departures are around 7% more expensive than evening flights, on average. The most expensive time of day to fly to Southeast Asia is generally at night, which is peak travel time and where the average cost of a ticket is ฿12,718.

Can I save money by flying with a stopover from Seoul to Southeast Asia?

The average return price for all direct flights, flights with one stopover, and flights with two stopovers for the route found by users searching on KAYAK in the last 2 weeks.

No, with an average price for the route of ฿15,439, prices are generally cheapest when you fly direct.

What is the cheapest month to fly from Seoul to Southeast Asia?

To calculate monthly average prices, KAYAK takes all prices for each month over the last year for round-trip flights from Seoul to Southeast Asia, removes the top 0.1% to account for outliers, and then takes the median of all values for each month.

The cheapest month for flights from Seoul to Southeast Asia is September, when tickets cost ฿6,643 (return) on average. On the other hand, the most expensive months are October and February, when the average cost of return tickets is ฿10,327 and ฿10,294 respectively.

What’s the cheapest day of the week to fly from Seoul to Southeast Asia?

The average price of all round-trip flights from Seoul to Southeast Asia clicked on KAYAK for each day over the last 12 months.

When flying from Seoul to Southeast Asia, you should consider leaving on a Sunday and avoid Wednesdays if you are looking for the best rates. For your return to Seoul, you’ll find the best rates on Sundays and the most expensive ones on Mondays.

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

To calculate weekly average prices, KAYAK takes all prices for each week before departure over the last year for round-trip flights from Seoul to Southeast Asia, removes the top 0.1% to account for outliers, and then takes the average of all the values for each week.

To get a below-average price on a flight from Seoul to Southeast Asia, you should book around 2 weeks before departure, which saves you about 16% compared to booking last-minute. For the absolute cheapest price, our data suggests you should book 4 weeks before departure.

Good to know

Low seasonMay
Cheapest flight฿3,914
Best time to beat the crowds (2% less expensive on average)
Most popular time to fly and prices are also 10% lower on average.
Flight from Seoul Incheon Airport to Chiang Mai

Flights from Seoul to Southeast Asia: the best tips from KAYAK users

Insights shared by verified travellers who flew the route from Seoul to Southeast Asia 
Kent ThienFlew with Korean Air
ICN
-
SGN
Feb 2025
You have to prepare for the waiting time for immigration to Vietnam, it takes 3 hrs to go thru and it is easy to get mad of it
TomFlew with Asiana Airlines
ICN
-
CGK
Jul 2024
We spent our long layover in the transit hotel in terminal 1 of Incheon Airport. The room was small, but was also very clean and well kept. I'd highly recommend this hotel if you have a long layover. The price wasn't bad at all.

FAQs - booking Southeast Asia flights

  • How does KAYAK find such low prices on flights from Seoul to Southeast Asia?

    KAYAK is a travel search engine. That means we look across the web to find the best prices we can find for our users. With over 2 billion flight queries processed yearly, we are able to display a variety of prices and options on flights from Seoul to Southeast Asia.

  • How does KAYAK's flight Price Forecast tool help me choose the right time to buy my flight ticket from Seoul to Southeast Asia?

    KAYAK’s flight Price Forecast tool uses historical data to determine whether the price for a flight from Seoul to Southeast Asia is likely to change within 7 days, so travellers know whether to wait or book now.

  • What is the Hacker Fare option on flights from Seoul to Southeast Asia?

    Hacker Fares allow you to combine one-way tickets in order to save you money over a traditional return ticket. You could then fly from Seoul to Southeast Asia with an airline and back with another airline.

  • What is KAYAK's "flexible dates" feature and why should I care when looking for a flight from Seoul to Southeast Asia?

    Sometimes travel dates aren't set in stone. If your preferred travel dates have some wiggle room, flexible dates will show you all the options when flying from Seoul to Southeast Asia up to 3 days before/after your preferred dates. You can then pick the flights that suit you best.

Reviews of the top airline flying from Seoul to Southeast Asia

 
See real verified KAYAK customer reviews for airlines flying from Seoul to Southeast Asia. Airline scores are aggregated from all reviews left by passengers on KAYAK after flying with an airline. KAYAK doesn’t show reviews that are older than 5 years. Learn how KAYAK collects reviews.
Need help choosing which airline to fly with from Seoul to Southeast Asia? KAYAK airline reviews give an overall score for each airline based on loads of factors, including comfort, boarding, in-flight entertainment and more, to make your decision easier. See airline scores according to verified KAYAK customer reviews.
7.6
Jeju AirOverall score based on 38 reviews
8.4Crew
5.9Entertainment
8.0Boarding
7.6Comfort
6.0Food
Airline reviews

Tightest knee space ever experienced on any budget airline. Crew polite and efficient, take off and arrival on time. Surprised that they did not offer water on flight except as sales product. Questions about Food and entertainment not applicable since neither are offered.

8.0 ExcellentAnonymous, Dec 2025
KHH - GMP
Read more Jeju Air reviews

Tightest knee space ever experienced on any budget airline. Crew polite and efficient, take off and arrival on time. Surprised that they did not offer water on flight except as sales product. Questions about Food and entertainment not applicable since neither are offered.

At the boarding gate, Jeju airline accepted "carry on" bags for checking in for free due to the "limited cabin space". This is because most passengers were carrying multiple bags that exceed the size and weight limit for carry on items. Rather than inspecting carry-on bags at the counter and requiring excess bags to be checked in for a fee, they allowed freeloading at the boarding gate to to the detriment of those who paid the fee for checked bags. This is totally unfair.

As posred earlier the crew was very accommodating & professional. Thank You Allen

All though you can not help it the kids was loud and unruly, The crew was very accommodating and professional. Thank You Allen.

No priority counter check in for families with young children.

The flight was delayed from GUM to ICN, there was no notification on how delayed the flight would be. Although we received notice, there was no specified time given. The flight was also very uncomfortable.

Everything you need to know for your flight to Southeast Asia

Cabin class types available on flights to Seoul

Cabin classes available on flights to Seoul. Prices are the lowest found on KAYAK over the last 7 days. Price and availability is not guaranteed.