$156 Find Cheap Flights from Sri Lanka to Thailand - Compare and Save

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KAYAK's insights & trends for flights to Thailand

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

What is the cheapest flight to Thailand?

The cheapest ticket to Thailand from Sri Lanka found in the last 5 days was to Bangkok Suvarnabhumi Airport, at $289 round-trip. The most popular route is Colombo Bandaranaike Intl Airport (CMB) to Bangkok Suvarnabhumi Airport (BKK) and the cheapest round-trip airline ticket found on this route in the last 5 days was $289.

What is the cheapest month to fly from Sri Lanka to Thailand?

The cheapest month for flights from Sri Lanka to Thailand is January, when tickets cost $191 (return) on average. On the other hand, the most expensive months are August and March, when the average cost of round-trip tickets is $276 and $259 respectively.

What is the cheapest time of day to fly to Thailand?

The cheapest time of day to fly to Thailand is generally at night, when round-trip flights cost $336 on average. The most expensive time of day to fly to Thailand is generally in the morning, which is peak travel time and where the average cost of a ticket is $457.

How far in advance should I book a flight from Sri Lanka to Thailand?

To get a below average price on the flight from Sri Lanka to Thailand, you should book around 5 weeks before departure, which saves you about 22% compared to booking last minute. For the absolute cheapest price, our data suggests you should book 13 weeks before departure.

Which is the cheapest airport to fly into in Thailand?

Prices will differ depending on the departure airport, but generally, the cheapest airport to fly to in Thailand is Bangkok Don Mueang Intl Airport (DMK), with an average flight price of $202.

Good to know

Low season

October

Cheapest flight

$156
Best time to beat the crowds with an average 4% drop in price.
Most popular time to fly and prices are also 3% lower on average.
Flight from Colombo to Bangkok Don Mueang Intl

FAQs for booking flights from Sri Lanka to Thailand

  • How does KAYAK find such low prices on flights from Sri Lanka to Thailand?

    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 Sri Lanka to Thailand.

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

    KAYAK’s flight Price Forecast tool uses historical data to determine whether the price for a flight from Sri Lanka to Thailand 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 Sri Lanka to Thailand?

    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 Sri Lanka to Thailand 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 Sri Lanka to Thailand?

    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 Sri Lanka to Thailand 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 Thailand?

    Based on KAYAK data, the cheapest day to fly to Thailand is Sunday where round-trip tickets can be as cheap as $340. On the other hand, the most expensive day to fly is Wednesday, where round-trip prices are $374 on average.

Reviews of the top 5 airlines serving from Sri Lanka to Thailand

 
Need help choosing which airline to fly with from Sri Lanka to Thailand? 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.
8.2
Singapore AirlinesOverall score based on 1627 reviews
8.0Comfort
8.3Boarding
8.1Entertainment
8.6Crew
7.8Food
Airline reviews

It is not so much I had bad experience with Singapore Airlines, but with Kayak and particularly Underpricer. My wife and my seat arrangements were changed some times after we booked our tickets and reserved our seats I February 14, 2026. However, after our arrival we realized that we were separated and sitting in different isles. Our return tickets indicated the same. Our several calls to your Underpricer customer care were useless as they cared how much they could charge us rather than actually help us. At the end they referred us to Singapore Airlines. If that was the solution, why did I have to call your Underpricer customer care. I will definitely erase your app from my phone and I will never use Kayak for future traveling. After all, there are so many agencies that I can use other than your company.

2.0 MediocreFarid, Sep 2026
Read more Singapore Airlines reviews

It is not so much I had bad experience with Singapore Airlines, but with Kayak and particularly Underpricer. My wife and my seat arrangements were changed some times after we booked our tickets and reserved our seats I February 14, 2026. However, after our arrival we realized that we were separated and sitting in different isles. Our return tickets indicated the same. Our several calls to your Underpricer customer care were useless as they cared how much they could charge us rather than actually help us. At the end they referred us to Singapore Airlines. If that was the solution, why did I have to call your Underpricer customer care. I will definitely erase your app from my phone and I will never use Kayak for future traveling. After all, there are so many agencies that I can use other than your company.

Had picked seats while booking tickets but airlines reshuffled the seats without informing and we were again left with the worst possible seats on the return journey. terrible experience.

Very concerned with guest comforts going out of their way to accommodate special dietary needs when the guests hadn’t pre-ordered.

No frills airline with minimal leg room and no entertainment

We were not given option for meals since they ran out of the other option but good thing the remaining options tasted great.

A 16 hour flight from Singapore to Los Angeles had only 2 meals. Please make it 3 meals.

Good flight. Fiod was ready a bit late hence a hurry to finish before landing. Excellent crew and service

Airport lounge for business class is too crowded and not comfortable. Poor foods and facilities. Boarding was delayed. A lot of coughing people in the flight even in the business class, which indicated poor screening and health risks.

Seamless fussy free flight. Great service as expected of SIA.

Cleanliness Help for boarding and sitting Food should have been better

There was no screens on the flight, and no wifi with which we could connect to the internet and stream any content. This was a smaller plan so the business class seats were a bit tight. No hot towels or welcome drinks like when you fly on the bigger TG on the same route. The food was excellent, much better than the previous Thai airways business class meals. It was also nice that they offered eye masks for easy sleeping.

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.

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

Excellent airline. The plane was clean and the staff were very attentive

I'm not interested in improving the airline. Therefore, I won't explain this in more detail. Next time I'll try a different one.

The flight (boarding) was delayed by 40-50 minutes and there was very crowed. They need to improve on the timeliness & boarding process. (They asked passenger to board in groups, but the 2nd group was standing there waiting for 20 minutes!). However, services from the crew was very good, also the food was good as well. I also found the legroom was quite comfortable.

Except that our flight was cancelled, by mail, and later moved to 12 hours prior, then the experience was good. In Bangkok we were offered a hotel, it was fine, but would have been nice to know in advance😉

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

The boarding efficiency was good. A couple of the flight attendants did not seem in the best of moods. Overall it was a good experience.

Delayed flight in Singapore caused the transfer at Bangkok to be very stressful. Fortunately, no elderly were in this trip, else it will not be possible to catch the connecting flight. There were also several occasions throughout the flight journey where some of the passengers were not wearing their seat belts despite several remainders from the stewardess.

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 rudest staff in the world!!! we had overweight baggage, which is our fault but it is a really stupid rule, and the woman said we could reorganise or pay now, we said we’d reorganise and she started shouting “do it now! hurry up!” even though the flight wasn’t even boarding yet. She told us that if our two cabin bags were below 14 together, then we wouldn’t have to pay 500k dong. We reorganised and our bags were below 14kg. She then said that it was all of our bags together that should be less than 14kg. We were obviously confused by this, because she had just said that it was our two cabin bags and we asked her why she told us to rearrange our bags then. She started shouting at us again saying that we needed to “pay now or throw away”. We said fine, we’ll just pay, and she suddenly started asking for 1.51 million dong. I asked her why it was suddenly over three times the price and she said that it was always that price. I asked to see the other piece of paper she had that had the other price and she slammed her one on top of it and started shouting “pay now or i’ll close the gate” (boarding was already finishing at this point). So, we had no choice but to pay three times the original price, even though we reorganised our cabin bags to be under the necessary weight like she had asked us to. I wouldn’t even be so upset about the money if the staff were at least a little bit nice. She was possibly the rudest, most ignorant woman I have ever met in my life. Besides that, the plane/flight was just a bit worse than ryanair standard. Small seats, delayed by an hour. Typical low budget. At least the ryanair staff don’t try to scam you. Avoid at all costs, it’s not worth the hassle of dealing with such horrible people.

The boarding process took very long, partly due to passengers on incoming flight took too long to deplane

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.

Not good in terms of amenities. For over 6 hours they don’t even provide complementary drinks or snacks-forget about dinner or lunch.

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.

I had been keen to try this airline and I found the food great and appreciated the metal utensils. I found the seating space smaller than most. I am 177cm and was unable to reach down and pick up something off the floor because the seat in front was too close. One of our seats couldn’t be locked in to recline and the staff were sour and unhelpful. We were on 3 flights in a row and were only provided a total of about 700ml of juice / water for the 24 hour period. I recommend taking your own bottle on board because staff will fill it for you. I had to keep asking for water and they couldn’t come up with any better solution than 100ml at a time in a cup. I asked them to give me 2 x 500ml bottles of sparkling water that we could have to ourselves and the lady I asked didn’t want to give me the whole thing until another staff member understood the problem and overrode her. It would be handy to suggest people bring a refillable bottle on board.

Sri Lankan airline had less entertainment choices and Sri Lankan national carrier did not have language choices

Very poor. The flight was delayed for over an hour. Also, our baggage, including that of many passengers, approimately 180 bags did not arrive, and we are yet to receive it.

Poor, They have damaged my luggage and I have filed a claim at Colombo airport. They promised I will be in touch by the team within next 2 days but there is no One contacted me at all after 1 week. I then follow up again and received an email acknowledging my claim and claimed that they will reply in 12 days on investigation. Again, no response at all after that… Very disappointing…

All good, on time, depart.only bad side was, airxraft is too old to be in business.hope ailine will manage somethinv somewhat.all good

Was good, comparatively. A330, with good crew set.on time depature. And crew try there best, to make thing efficient.

Spesific ,Crew and cabin manager, look after all pax on board despite being in a old A320 equipment.Got free seat upgrade as well,but old style seats, no much comfert on it.But food and the spesific crew, was amazing.maintain airlanka standerd.the cabin manager, who was so much keen,keen operate as per SOP.

The staff was absolutely phenomenal but the other elements of Sri Lankan Airlines need some serious adjustments. The day started off with terrible news that the flight was cancelled from Male and that the plane went to Malta. As an American, when such delays occur, the airlines find suitable ways to accommodate their customers such as putting them in an Airport hotel or lounge while waiting for the next flight. A 1.5 hour trip turned into 12 hours with no accommodations from the Airlines except a ticket to eat breakfast. For such a Billion dollar industry, a cheap breakfast is an insult toward the customer and something greater should have been done.

not looking like a national flag carrier.. both the ground team and flight team are far from being kind and helpful. Not sure what's wrong.

I m not good serves poor serves I m m fake company kayak ok plzz my help my ticket cancel my tripe ok

Friendly staff but otherwise a typical no frills airline. The sets are extremely cramped

Flight delayed for one hour last minute change the gate this is something new? Wak all over the airport bit fast bording to flight smd miss my meeting in kuaa lumpur is the year end meeting no internet in flught which is not good Anyway overall is good thanks to the crew on duty Un able to check in on line and choose the seat thatbi wanted and in flight meal too unable to purchase rrally sad Should get priority seat in next booking

We were told that flight was delayed by 20 mins, but it left close to an hour late. But they did make it up and arrived early; it's just very difficult to keep waiting when it's a late flight. Food was mediocre.

The flight has been delayed for nearly an hour, yet neither the captain nor the chief steward made an effort to explain the reason for the delay or offer any apologies to the passengers.

We recently flew with AirAsia and encountered several issues. Our flight was delayed by over an hour, and both boarding and takeoff were postponed without any prior notification. Although we eventually realized there was a delay on our own, the crew did inform us afterward. To make up for lost time, the pilot took off at high speed, resulting in some turbulent moments that were quite scary. Despite these challenges, the cabin crew did an excellent job managing the situation and easing the inconvenience. Overall, while the delays and turbulence made for a stressful experience, I appreciated the crew’s efforts to keep us as comfortable as possible.

Very quick turn around, plane was in good condition, alles paletti.

Premium check in was worth it. Boarding process was a little chaotic. Seats were super cramped and I am less than 80kg and 180cm

The flight delay... but bus from the airport be on time

Second time flying on AirAsia. They’re fine for a low cost carrier, so I don’t expect high level hospitality. They could have informed us that the flight would be delayed even if by a few minutes, instead of the passengers asking the gate agents why we’re not boarding 8 minutes before takeoff. And given some of the passengers on this particular flight were problematic, the crew did great handling such people.

Great flight. Achieve my objecttive of travelling with less hassle .

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