$63 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 10/12. 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

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.
These are the airlines KAYAK users have selected most often from within our search results in flight searches from Seoul to Southeast Asia.
Travelers love KAYAK
41,299,237 searches in the past 7 days on KAYAK

Save 22% or moreCompare multiple travel sites with one search.

Track pricesNot ready to book? Create a price alert for when prices drop.

Bundle and saveSave money when you bundle your flight + hotel.

Filter your dealsChoose cabin class, free Wi-Fi and more.

Flight Deals
Booking Insights
Flight Deals

Cheap Flights from Seoul to Southeast Asia

Cheapest round-trip prices found by our users on KAYAK in the last 72 hours
Manila
Manilanonstop$141
Krabi
Krabi1 stop$303
Manila
Manilanonstop$141
Krabi
Krabi1 stop$303

Book Cheap Seoul to Southeast Asia Plane Tickets

 
Here are some of the best deals found on KAYAK recently from the most popular airlines for round-trip 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 round-trip flight deals from Seoul to Southeast Asia

Sat, Oct 11 - Wed, Oct 15
Jeju Air Logo
8:05 pm - 11:55 pmICN-BKK
5h 50mnonstop
Jeju Air Logo
1:00 am - 8:40 amBKK-ICN
5h 40mnonstop
$110Jeju Air
Find Deal
Sun, Sep 21 - Sat, Sep 27
Jeju Air Logo
8:05 pm - 11:55 pmICN-BKK
5h 50mnonstop
Jeju Air Logo
1:00 am - 8:40 amBKK-ICN
5h 40mnonstop
$113Jeju Air
Find Deal
Thu, Oct 16 - Thu, Oct 23
Jin Air Logo
7:55 pm - 11:45 pmICN-BKK
5h 50mnonstop
Jin Air Logo
12:55 am - 8:25 amBKK-ICN
5h 30mnonstop
$139Jin Air
Find Deal
Fri, Sep 26 - Sun, Sep 28
Jin Air Logo
7:55 pm - 11:45 pmICN-BKK
5h 50mnonstop
Jin Air Logo
12:55 am - 8:25 amBKK-ICN
5h 30mnonstop
$148Jin Air
Find Deal
Sun, Sep 21 - Fri, Sep 26
VietJet Air Logo
1:50 am - 4:40 amICN-CXR
4h 50mnonstop
VietJet Air Logo
9:50 pm - 4:30 amCXR-ICN
4h 40mnonstop
$155VietJet Air
Find Deal
Tue, Sep 23 - Wed, Oct 1
VietJet Air Logo
1:50 am - 4:40 amICN-CXR
4h 50mnonstop
VietJet Air Logo
9:50 pm - 4:30 amCXR-ICN
4h 40mnonstop
$162VietJet Air
Find Deal
Mon, Oct 13 - Fri, Oct 17
Asiana Airlines Logo
7:30 pm - 10:00 pmICN-HAN
4h 30mnonstop
Asiana Airlines Logo
1:25 pm - 7:35 pmHAN-ICN
4h 10mnonstop
$219Asiana Airlines
Find Deal
Sat, Oct 18 - Fri, Oct 24
Asiana Airlines Logo
7:30 pm - 10:00 pmICN-HAN
4h 30mnonstop
Asiana Airlines Logo
11:30 pm - 5:50 amHAN-ICN
4h 20mnonstop
$220Asiana Airlines
Find Deal
Tue, Sep 23 - Tue, Sep 30
Korean Air Logo
9:05 am - 12:35 pmICN-SGN
5h 30mnonstop
Korean Air Logo
1:55 pm - 9:25 pmSGN-ICN
5h 30mnonstop
$233Korean Air
Find Deal
Tue, Sep 23 - Tue, Sep 30
Korean Air Logo
9:05 am - 12:35 pmICN-SGN
5h 30mnonstop
Korean Air Logo
1:55 pm - 9:25 pmSGN-ICN
5h 30mnonstop
$244Korean Air
Find Deal
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 Bangkok, at $101 round-trip. The most popular route is from Incheon Intl Airport (ICN) to Bangkok Suvarnabhumi Airport (BKK), and the cheapest round-trip airline ticket found on this route in the last 72 hours was $101.

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

The average round-trip price for all non-stop flights, flights with one layover, and flights with two layovers for the route found by users searching on KAYAK in the last 2 weeks.

No, with an average price for the route of $463, 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 June, when tickets cost $177 (return) on average. On the other hand, the most expensive months are January and December, when the average cost of round-trip tickets is $364 and $326 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 Monday and avoid Saturdays if you are looking for the best rates. For your return to Seoul, you’ll find the best rates on Saturdays and the most expensive ones on Wednesdays.

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 the flight from Seoul to Southeast Asia, you should book around 1 week before departure. For the absolute cheapest price, our data suggests you should book 5 weeks before departure.

Good to know

Low seasonMarch
Cheapest flight$63
Best time to beat the crowds with an average 9% drop in price.
Most popular time to fly and prices are also 5% lower on average.
Flight from Incheon to Hanoi

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

Insights shared by verified travelers who flew the route from Seoul to Southeast Asia 
Kent ThienFlew with Korean AirICN-SGNFeb 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 AirlinesICN-CGKJul 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 travelers 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 round-trip 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.

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

    The cheapest time of day to fly to Southeast Asia is generally in the afternoon, when round-trip flights cost $249 on average. Morning departures are around 8% more expensive than evening flights, on average. The most expensive time of day to fly to Southeast Asia is generally in the morning, which is peak travel time and where the average cost of a ticket is $355.

Reviews of the top 5 airlines serving 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.
8.7
Jin AirOverall score based on 20 reviews
8.3Comfort
8.8Boarding
7.9Food
9.1Crew
7.9Entertainment
Airline reviews

I like the landing which is nice and safe, seats are also comfortable

10.0 ExcellentAnonymous, Apr 2025NRT - ICN
Read more Jin Air reviews

I like the landing which is nice and safe, seats are also comfortable

Staff on board were good - food was fine tasted good - tv was old 1970ts in seat back but hey it was a 2 out flight so no drama

Everything was excellent as I expected. They also had a very caring crew. I had a headache and asked a Tylenol. The crew members kept checking with me how I was doing.

I can't believe they put my wife and I in the two middle seats! It is a very long flight and we had single flyers on either side of us blocking the way to the bathroom! There's no reason to not give one of us the isle seat so we could have managed bathroom needs and snacks with convenience. So I think very poorly of Korean air to put us both in the middle, I've never had that happen before and will probably avoid this airline in the future because of this. We tried to have them change it but they didn't so you pretty much lost a customer because of it.

There could have been better spacing of the passengers, it was crowded in some parts of the plane then other while rows were empty

Plane took off on time and I had the whole row to myself!

One of the flight attendants stepped on my foot. I was on the aisle seat. A lady inside needed to get out. So Instood. Just then, a flight attentendant came wuicklybtheoughbthe aisle and stepprd on my sock covered toes. I let out a small sound. She stopped momentarily, but didn’t ask how I was just took off of the aisle. Never came back to see how I was. Fortunately, I was not really hurt other than a slight soreness in my toes. But I found that to be very negligent.

This flight was a superior flight in all regards. Extremely pleasant experience.

Korean Air is unlike any other major airline I have flown with. The grace and respect that the staff has from check in to de-boarding is unmatched. The flight attendants this time were especially wonderful to my five little children. They helped us rearrange to more suitable seating, brought our children’s meals, and patiently waited for them in the aisles when they had to use the bathroom. We felt so welcome and comfortable. I really appreciate the meal voucher when our flight was delayed. I am grateful to have had such an stress-free experience.

It's good overall. Flight was packed. Inflight entertainment choices were lacking.

They were very accommodating of a dietary issue. Nice movie & tv selections. Non-stop helped get through a very long (15 hr) flight

They did an excellent job helping me with a wheelchair. I couldn’t have asked for any better help.

Better screens, it would have been nice to have more comfortable seats.

2nd major delay due to maintenance issues. 1st delay missed my connecting flight.

Very clean ,flight attendants very professional,nice , Boarding was very easy

The aircraft was massive (A-380) and became crowded with 400+ passengers on board.

The plane hasnt left im stuck in seatle still my flight has been grounded for almost 5 hours

Love flying Asiana. Been using it for over a decade now.

Coming back to America was a peaceful flight everyone and everything was perfect

The staff was courteous and the flight was very smooth. It was so nice to see the captain greeting the passengers at the end of the flights.

The beefsteak on the lunch menu was excellent! I usually do not eat airplane food. I loved it.

Flight was too cold. I wore a regular cotton tee and it wasn’t enough. It was a night time flight so I would have thought a blanket would be provided to passengers. A 4 hour flight and no options for a meal? I flew Asiana the next day from Seoul to Manilla. Same duration, 4 hours. They give everyone a pillow and blanket and serve a meal. Why is United so cheap and holding back meals and amenities? Also, they promote too much gay stuff and DEI in their advertisements. Please be mindful of other beliefs and don’t shove your gay ideology down my throat.

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.

Late departure, late arrival, and personal items on laps during takeoff and landing. Departure gate opened on time, but no direction as to whether to board at front or rear of plane based on seat number. Fashionable staff with sunglasses inside the plane and cockpit remained for ten minutes after the boarding complete announcement. For a scheduled 80 minute flight, adjusted to 65 minute as noted on takeoff; the total time on the plane with delays was r more than two hours. No confidence had there been an emergency that anyone would have been able or aware of what to do.

The flight was OK, but you need to warn passengers going to Vietnam that the full first, middle and last name needs to be in the issued visa, At least 5 passengers on that pane did not have that. We all had to pay $298 each to some agent to amend the visa. At least one lady could not and was left behind.

VietJet is a discount airline like EasyJet, Flair or Spirit. I flew 3 flights in 2 weeks and all were Airbus 321's. 2 of the flights left and arrived on time and 1 left and arrived about 45minutes late. Seat pitch in economy is 29" but exit row seats have super-generous leg room. There are no power ports or entertainment of any kind. Food is best purchased on-line before the flight but there is a limited selection available in flight - cash only. The aircraft are clean and the airline is run as well as any other airline that specializes in economy passengers.

Our flight was 3 hours delayed and the airport was hectic as our boarding pass said one gate while the digital screens said another gate. Attendants were clueless and said to watch both! Vietjwt cared more about selling their merch than even providing any water for the 2 hour flight

Cheap flight but more expensive when the airlines demands you pay over 30$ for 1 kilogram overweight ( it is 8,2kg I have for carry on baggage) The flights announcement 2PM, and it departed 4 PM, no announcement for delaying, People says Vietjet is delayJet airlines in their blood.

Vietjet tried to steal extra money from passengers by forcing them to change the name on the ticket that was correctly filled in on an English form online when ticket bought online. I bought the ticket via a foreign website where the language is English, At filling in the passenger's name, it says middle name first, then first name, and last name, That the ticket done and printed. when my wife checked in the staff at the check in counter said that her name was written wrong, she must fill the name in Vietnamese style, writing the Last name first, then middle name, first name comes last, even though her name was not misspelled. At the aiport I asked the Vietjet customer service, if it is written in Vietnamese way, it will be wrong when she travel abroad ? The custom service could not answer. It took over an hour where my wife was thrown like a ball between the check-in counter, to the Vietjet customer service , then to passport control. The cost is 110,000 vnd for change place in vietnamese way, I thought if there are millions of passengers who have done the same mistake, how much money Vietjet raked in every year On the flight, it is not allowed to sit in the empty seats in front or next to me, I sat in the middle in a row where two big men were sitting, I really need to change seats but the crew asked to pay extra to buy the empty seats. It is petty and cruel of Vietjet. There is no other choice than the state-owned airline, then you have no choice but to swallow the bite

Our flight was delayed for about 3hours however the ground crew made it sure that we will not miss our connecting flight from Hanoi to incheon.

If there could be simple free food or snack or some entertainment.

Seat pitch is narrow moreover the agent assigned seat in front of emergency exit window which is not reclined. A terrible 4hr 40min flight from HAN to DPS

Horrible! As an Asian, they look down on their own skin color. Disgusting people and airlines. If you are white, they will worship you

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.

Not what you’re looking for? Find thousands of other hotels, flights, car rentals and package deals with KAYAK.