Find Cheap Flights from Thailand to Southeast Asia – Compare and Save

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KAYAK's insights & trends for flights to Southeast Asia

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

What is the cheapest flight to Southeast Asia?

The cheapest ticket to Southeast Asia from Thailand found in the last 5 days was to Bangkok Don Mueang Intl Airport, at S$ 72 return. The most popular route is Bangkok Suvarnabhumi Airport (BKK) to Singapore (SIN) and the cheapest return ticket found on this route in the last 5 days was S$ 153.

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

The cheapest month for flights from Thailand to Southeast Asia is October, when tickets cost S$ 96 (return) on average. On the other hand, the most expensive months are December and February, when the average cost of round-trip tickets is S$ 122 and S$ 117 respectively.

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

The cheapest time of day to fly to Southeast Asia is generally at night, when retur flights cost S$ 187 on average. Morning departures are around 39% more expensive than evening flights, on average. The most expensive time of day to fly to Southeast Asia is generally in the afternoon, which is peak travel time and where the average cost of a ticket is S$ 397.

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

To get a below-average price on a flight from Thailand to Southeast Asia, you should book around 3 weeks before departure, which saves you about 27% compared to booking last-minute. For the absolute cheapest price, our data suggests you should book 6 weeks before departure.

Which is the cheapest airport to fly into in Southeast Asia?

Prices will differ depending on the departure airport, but generally, the cheapest airport to fly to in Southeast Asia is Hat Yai Airport (HDY), with an average flight price of S$ 49.

Good to know

Low season

September
Best time to beat the crowds (2% less expensive on average)
Most popular time to fly and prices are also 6% lower on average.

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

Insights shared by verified travellers who flew the route from Thailand to Southeast Asia 
Tengku kamal asriFlew with Thai Airways-Aug 2026
Be at the airport early as you know the airport is so big
puraviFlew with Bangkok Airways-Jan 2026
Krabi is a small but very efficient airport. Check in kiosks are readily available. Bag drop had a line but it moved quickly
DavidFlew with Thai Lion Air-Jun 2025
Avoid Air Asia, rude staff and they act entitled and make you feel they are doing you a favour and not treating you like a customer.
Verified travelerFlew with Thai Airways-Feb 2025
Get to your gates early, to make sure you are understanding what is being said sometimes the translations are not clear. Not their faults I’m in their country, I should learn more Thai :)
Verified travelerFlew with Singapore Airlines-Nov 2024
Be there early LONG LINES. If you want to experience the JEWEL At Singapore make sure u have a 6hr min layover. I suggest you get a locker for luggage. You do have to leave the airport and go thru immigration on your way out and back in. The lines are long.
Verified travelerFlew with Thai AirAsia-Jul 2024
Low cost airline have sometime what maight appear awkward travel times however choose well and you will infact gain time in you destination.. DMK is still totally fine and you get much cheaper flight choices
TananyaFlew with Malaysia Airlines-Jul 2024
Malaysian Airlines is a good option. They don't have a screen but you can connect to onboard wifi and watch onboard entertainment, movies, and music on your smartphone or tablet. Bring your headphones. Some people didn't put on headphones and disturbed others with the sound from their phones.
JaniqueFlew with Thai Lion Air-Mar 2024
If you have more than 10 kg of luggage , buy the extra fees online because you will be charged three times more at the airport
GordonFlew with Bangkok Airways-Apr 2024
Try to put all your stuff in your checked luggage and take a light carry on.
JoshuaFlew with Bangkok Airways-Mar 2024
insist that the person checking you in checks you in all the way though. Do not leave until you have all your boarding passes
Verified travelerFlew with Thai Vietjet Air-Jan 2024
Look for food/ water in the airport as none is available on the plane unless you have made specific arrangements with the airline.
Verified travelerFlew with Thai Vietjet Air-Dec 2023
Go to the gantry early as more time required for transfer to aircraft

FAQs for booking flights from Thailand to Southeast Asia

  • How does KAYAK find such low prices on flights from Thailand 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 Thailand to Southeast Asia.

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

    KAYAK’s flight Price Forecast tool uses historical data to determine whether the price for a flight from Thailand 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 Thailand 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 Thailand 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 Thailand 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 Thailand 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 day to fly to Southeast Asia?

    Based on KAYAK data, the cheapest day to fly to Southeast Asia is Thursday when return tickets can be as cheap as S$ 206. On the other hand, the most expensive day to fly is Monday, when return prices are S$ 292 on average.

Reviews of the top 5 airlines flying from Thailand to Southeast Asia

 
Need help choosing which airline to fly with from Thailand 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.
7.9
Thai AirwaysOverall score based on 427 reviews
7.5Food
6.9Entertainment
8.5Crew
8.0Boarding
7.7Comfort
Airline reviews

Excellent service in business class. Well worth the slightly higher fare as it includes lounge access, additional luggage weight and a full hot meal on board.

10.0 ExcellentRamon, Jul 2026
Read more Thai Airways reviews

Excellent service in business class. Well worth the slightly higher fare as it includes lounge access, additional luggage weight and a full hot meal on board.

HAVING ANNOUNCEMENTS FOR PEOPLE TO BOARD ACCORDING TO GROUP IS ESSENTIAL N ENSURING N CUTTING OF QUEUES, EXCEPT FOR PRIORITY CLASS PASSENGERS ON A SEPARATE Q

We still get drinks and a snack. Love the gift bags too.

business class is old but still done very well by the team.

Good experience although the boarding gate is at the terminal extension hence need to leave lounge to head over earlier.

Thai Royal First is very good. Easy check in , Private room in the first class lounge and escort from ticketing to the plane. Once on board crew was very polite, food was outstanding, and the ride was smooth as silk. Restrooms were especially clean. Great Experience

Need to improve on punctuality. My flight was delayed by 1 hour.

Seats were uncomfortable and the vegetarian meal was awful. Some of the entertainment didn't work.

Although booked meal of fruit only The crew had not received this special meal The same happened on my flight Bangkok / CAN The films are so old that best is to use own computer to watch downloads . Serve nuts but they do not warm up . Service is attentive , WC clean

They used Thai Smile plane, which is a smaller model and used to service only domestic flights; hence, the plane is small and quite compact. No entertainment on the flight. While boarding was delayed, it was done in a quick manner.

Overall a very good flight,staff on plane were very nice.And the flight was on time.A pleasant experience.

I asked for refund on many occassions due to a bereavement.I got no help,and I am very dissatisfied with the way I was treated. Regards George Walls

The flight left on time and landed early. The attendants were polite and friendly. Thank you

Efficient and fast check in, courteous staff at counter and on board. On time departure and arrival. AIR ASIA is my favorite international thailand carrier for reasonable cost and excellent customer service!

Delayed us three times, changed gates twice, and then tried to charge for food on the plane.

Air Asia just dreadfull. Always poorest customer service and very unwelcoming staff which is clearly bread in from the Top down from the CEO

Everything was good. The red seats were a scam. Just like any other seat but red. Although they let you board earlier which was very nice.

Very good, it would be good if payment for drinks could be accepted by card too.

Ontime, no frills, the cabin is clean, the ticket price is lower than the full-service airlines.

Paid for a meal we didn't receive. They admitted they had forgetten ours. No compensation or rectification offered. We requested if they would just give us a glass of wine instead and we would call it even. Crew advised they could not do this and to go to Air Asia counter on arrival and request a refund. Our flight didn't arrive until 2am so this was not a viable option. The crews solution was if we wanted a wine we should purchase one. I was unhappy with that suggestion considering they had already ripped us off with our meal.

Direct flight to BALI was good and convenient. Improvement suggestions - provide complimentary water

50 minutes delay on boarding,but overall delay time almost 2 hours on arrival.

I specifically searched for flight with checkin bags. Airfare assist website still sold tickets without check in bags and I had to pay 3 times more for my bad. Worst experience ever with untrained staff and haphazard boarding

As a frequent flyer, I was impressed with the smooth take off.

No frills means no frills... I just got on the plane and flew. That's all. Nothing more and nothing less. Or I did buy some water, they took cash only! LOL

First the flight delayed 1 hour ND then when we suppose to landing the pilot decided not to land at the chiang Mai Airport but the chiang rai airport

Easy to check in online and on time departure. But arrival gate was stuck a bit so we need to wait on plane after landed for 10 mins before get into gate and delayed a bit. Overall is fine with this price.

I rated the experience poor because I had to purchase new tickets to return to Phuket because the airline had no record of my flight.

i think allowing passenger to have personal handbags or bags in their lap is a safety issue. As for food there was not onbpard and had no other choice. We also waited for over 1hour 10 min for some reason and keep getting we will be departing soon.

Newer plane and comfortable. No wifi and thier website and App. are horrible. Tried to purchase luggage online and could not do it.

I don't like this airline. The website is not user friendly. I tried to check in multiple times and no joy. Then I googled why might this airline not let me check in and it said if you are checking baggage you can't check in. I really thought that I had purchased baggage. Because I have been traveling for 3 months and making sure that I pay for baggage on every flight. This flight they said that I had not purchased baggage but there is really no way to check on the passenger side.

I wasn't able to check in. The website could find my reservation but then an error occurred. I tried 4 times spread out through the day and got the error message every time.

well it was a short flight so there was no food but couldnt answer that question with a N/A There was no entertainment so N/A but the flight was great and staff was number #1

Never on time when I fly and Thai Vietjet App is too complicated. I had booked und paid for seat number 15A but when checked in, I got another seat number and row. I paid extra 50 bath for what??? They couldn’t change and I got no refund. No time to discuss with the ground crew to change it. I would never pay for seat anymore.

Excellent experience nothing could be improved with staff. Was hoping someday the airline will use tape recorded lfor languages that are not common to staff. Probably with AI it might be a good addition

We were packed in like sardines. They did not even serve water on the flight!

For a low cost airline they provide excellent value and modern planes. It did not feel cheap. But onboard drinks and meals are expensive and do not offer great value. Overall, a good experience.

I have taken more than 50 flights in the past year and this is the worst onboard experience that I've come across. There's always a risk with budget airlines and their creative views of customer service. Having bought a standard seat, we boarded at the assigned seat - we naturally couldn't choose ourselves as that would be extra cost. After take-off, the person in the row in front leans back their seat. As a frequent flyer, I believe this is their right, so I try to lean my seat back as well to have the same space available. However, my standard seat could not lean back, as the row behind was an exit row. As I had paid for a standard seat, not a less space than standard, I moved to the completely free row behind me. This was not allowed, as due to extra legroom, this would cost extra. Subsequently spent the next 30 mins discussing this scenario with the crew. I have no issues with budget airlines and additional charges, but if I pay for a standard seat, I want a standard seat, not one with less space. As you do not offer me a discount for the less space, do not try and charge me a premium, when I find a free seat with more space. It works both ways Scoot.

Finishes were quite worn, including our very scratched up seatback. No entertainment available, and the WiFi (even for “ScootHub”) was very slow. Crew were somewhat friendly.

Food & lower the prices. Look at Air Asia food look better & affordable

Not a frequent user of their website booking. Booked my check-in baggage and only realized that I did not book my check in baggage for return flight. The receipt was not clear in identifying that as well. Was charged exorbitantly at check in counter. Bad taste for sure when it is a business trip and not leisure trip. Baggage was delayed for more than an hour at belt back in SG.

The cosmetic condition was pretty run down. The carpets were badly worn out. Even the paint on the wings was chipped and peeled! Looks like they are running these 787s to the ground..

WiFi didn’t work on both sectors so made killing time harder - planes clean modern and good flight crew - would do again if WiFi works

Boarding was not accordingly after front seat, bmf then back seat. This delayed for at least 40mins or more. The staff at Jakarta can do better. Is chaos at the entry to board the plane. This tarnished Scoot reputation when everyone was talking about it.

The crew was not customer oriented at all, even confrontational . The aircraft needs more attention to detail as far as comfort, and the 1 hour sitting at the gate with no air is inexcusable

We were delayed, but there was never any update given. Everyone was standing at the gate as boarding was supposed to commence at 13:10 for a 13:55 flight. We didn't actually start getting on the shuttles to the plane, until after 14:00. No updates, no information given at all.

More options for your flight to Southeast Asia

Complete your trip to Southeast Asia with a hotel stay or car hire