Cheap flights from Colombo to Bangkok

Compare Colombo to Bangkok flight deals

Find the cheapest month or even day of the year to fly to Bangkok

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Flight deals from Colombo to Bangkok

Looking for a cheap last-minute deal or the best return flight from Colombo to Bangkok? Find the lowest prices on one-way and return tickets right here.

Bangkok.$159 per passenger.Departing Mon, 25 May.One-way flight with Thai AirAsia.Outbound direct flight with Thai AirAsia departs from Colombo Bandaranayake on Mon, 25 May, arriving in Don Mueang.Price includes taxes and charges.From $159, select.

Bangkok.$160 per passenger.Departing Wed, 28 Jan.One-way flight with Thai AirAsia.Outbound direct flight with Thai AirAsia departs from Colombo Bandaranayake on Wed, 28 Jan, arriving in Don Mueang.Price includes taxes and charges.From $160, select.

Bangkok.$163 per passenger.Departing Sun, 15 Mar.One-way flight with Thai AirAsia.Outbound direct flight with Thai AirAsia departs from Colombo Bandaranayake on Sun, 15 Mar, arriving in Don Mueang.Price includes taxes and charges.From $163, select.

Bangkok.$165 per passenger.Departing Wed, 22 Apr.One-way flight with Thai AirAsia.Outbound direct flight with Thai AirAsia departs from Colombo Bandaranayake on Wed, 22 Apr, arriving in Don Mueang.Price includes taxes and charges.From $165, select.

Bangkok.$166 per passenger.Departing Mon, 10 Aug.One-way flight with AirAsia.Outbound indirect flight with AirAsia, departs from Colombo Bandaranayake on Mon, 10 Aug, arriving in Don Mueang.Price includes taxes and charges.From $166, select.

Bangkok.$166 per passenger.Departing Tue, 21 Jul.One-way flight with AirAsia.Outbound indirect flight with AirAsia, departs from Colombo Bandaranayake on Tue, 21 Jul, arriving in Don Mueang.Price includes taxes and charges.From $166, select.

Bangkok.$166 per passenger.Departing Wed, 11 Feb.One-way flight with Thai AirAsia.Outbound direct flight with Thai AirAsia departs from Colombo Bandaranayake on Wed, 11 Feb, arriving in Don Mueang.Price includes taxes and charges.From $166, select.

Bangkok.$166 per passenger.Departing Sun, 28 Dec.One-way flight with AirAsia.Outbound indirect flight with AirAsia, departs from Colombo Bandaranayake on Sun, 28 Dec, arriving in Don Mueang.Price includes taxes and charges.From $166, select.

Find the cheapest month to fly from Colombo to Bangkok

We’re always keeping an eye on fares, so you can find the best one in seconds. It looks like Colombo to Bangkok flights are currently cheapest in May.

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Direct flights from Colombo to Bangkok

Alternative Colombo to Bangkok routes

Looking for the cheapest, fastest or easiest route from Colombo to Bangkok? You could fly into the following airports instead.

Colombo to Bangkok: Flight information

The things to know before you go.

Cheapest flight found	$159
Cheapest month to fly	May
Average flight time	3 hrs, 32 mins
Most popular airline	SriLankan Airlines
Average flights per week	93

Finding cheap flights from Colombo to Bangkok: Frequently asked questions

How many airports are there in Bangkok?

There are 2 airports in Bangkok: Don Mueang and Bangkok Suvarnabhumi.

How much are return flights from Colombo to Bangkok?

The best price we found for a return flight from Colombo to Bangkok is $252. This is an estimate based on information collected from different airlines and travel providers over the last 4 days and is subject to change and availability.

How long does it take to fly from Colombo to Bangkok?

3 hours and 31 minutes is the average flight time from Colombo to Bangkok.

Which airlines fly direct from Colombo to Bangkok?

Qantas, SriLankan Airlines and Myanmar Airways International fly direct from Colombo to Bangkok.

How many flights are there a week from Colombo to Bangkok?

As of December 2025, there are 93 flights per week flying from Colombo to Bangkok.

When is the cheapest time to fly from Colombo to Bangkok?

The cheapest month to fly from Colombo to Bangkok is usually January.

Which is the cheapest airport to fly into in Bangkok?

If you're flying from Colombo, the cheapest airport near Bangkok is Don Mueang – which is 21.5 km away from the centre of Bangkok. We've found flights into this airport from $252.

Which upcoming date is cheapest to fly from Colombo to Bangkok on?

After crunching the numbers on our flight calendar, we found that it is currently cheapest to fly from Colombo to Bangkok on Wednesday, 7 January 2026.

Can I get a direct flight from Colombo to Bangkok?

Yes – the average flight time is 3 hours and 31 minutes.

How can I get the best flight deal from Colombo to Bangkok?

We show every price from over 1,200 airlines and travel agents, comparing them all so you don’t have to. If you know you want to fly to Bangkok but you’re not ready to book, set up a Price Alert. We’ll track prices for you, and let you know when they rise or fall.

When is the best time to book flights to Bangkok?

We crunched all the numbers in our flight calendar and it looks like the cheapest time to book a flight to Bangkok is around 40 days in advance, so don’t leave your flight to the last minute.

What’s the weather like in Bangkok?

In December, the average temperature is usually around 25°C. April is typically the warmest month in Bangkok, when it usually averages around 35°C. You can expect the least rain in December. The coldest month is November, with temperatures averaging 22°C. The rainiest month is September.

Which is the cheapest airline to fly from Colombo to Bangkok with?

The cheapest airline that flies to Bangkok is Thai AirAsia .

Travelling from Colombo to Bangkok: what you need to know

Planning your getaway begins with working out where you'll leave from in Colombo. Bandaranaike International Airport (CMB) is the city's main airport, so check out your options for booking a flight from Colombo to Bangkok taking off from here.
Hop off your plane in Bangkok at Suvarnabhumi Airport (BKK) or Don Mueang International Airport (DMK).
The average length of a direct Colombo to Bangkok flight is 3 hours 30 minutes.
Allow plenty of time to get on your Colombo to Bangkok flight. As a general rule, turn up two hours before international departures and an hour ahead for domestic flights.
Taking off during a peak time like public or school holidays? Expect longer queues at security and check-in. To give yourself peace of mind, arrive up to four hours before international flights and two hours before domestic departures.

How to find the cheapest flights from Colombo to Bangkok

The lowest price we've found for a one-way ticket from Colombo to Bangkok is $159. For a return flight on this route, the best price is $252. Depending on when and how early you book, these fares may change.
Get cheap Colombo to Bangkok flights by booking two months ahead. According to our research, that's the ideal time for picking up a bargain.
The best month for landing cheap plane tickets from Colombo to Bangkok is May. Use the 'Whole month' tool to compare flight prices, then choose the dates offering the lowest fares.
There's no need to check back in every day to find out if prices have dropped when you create a Price Alert. We'll let you know the moment a better deal comes up on cheap flights from Colombo to Bangkok.
Choose your preferred arrival and departure times, number of stops and airlines with the filters. Or sort your Colombo to Bangkok flight results by 'Cheapest,' 'Best' or 'Fastest.'

Flying from Colombo

Bandaranaike International Airport (CMB)

You can find a direct flight from Colombo to Bangkok leaving from Bandaranaike International Airport (CMB). Set out from CMB and then hit the runway at Suvarnabhumi Airport (BKK) or Don Mueang International Airport (DMK).
Choose from a range of airlines offering direct Colombo to Bangkok plane tickets with departures from CMB, including:
Stopovers are the perfect opportunity to break up your trip — and possibly even visit a new city. When searching for Colombo to Bangkok flights departing from Bandaranaike International Airport, uncheck the 'Direct flights only' box to see where you can visit along the way. Here are some popular options to consider:
- Kuala Lumpur International Airport (KUL)
- Changi International Airport (SIN)
- Kempegowda International Airport (BLR)
Travelling from central Colombo to CMB takes around 1 hour 30 minutes by public transport. If you drive, ride-share or grab a cab, you'll cover the 27 kilometres in 40 minutes or so, depending on traffic.
In search of a convenient hotel close to Bandaranaike International Airport? If you're catching an early flight from Colombo to Bangkok, these stays will put you nice and close to your departure gate:
Of all flights departing from Bandaranaike International Airport, 75.71% land on schedule at their destination.

Arriving in Bangkok

Suvarnabhumi Airport (BKK)

The distance from Suvarnabhumi Airport (BKK) to central Bangkok is approximately 29 kilometres. It'll take you around 35 minutes to reach the centre driving.
Getting there on public transport takes roughly 1 hour 5 minutes.
If you're arriving on a late flight from Colombo to Bangkok, few things beat the convenience of staying near the terminal. Pick up your bags from the carousel and then be showered and snoozing soon after at one of these accommodation options near BKK:
Travel at your own pace with a Suvarnabhumi Airport rental car. Book your wheels from Chic Car Rent, asap car hire or Hertz and venture far and wide through Bangkok and beyond.
Lock in the lowest price by reserving your ride from Suvarnabhumi Airport about four weeks ahead of your departure.

Don Mueang International Airport (DMK)

Central Bangkok is around 21 kilometres from Don Mueang International Airport (DMK). After your flight from Colombo to Bangkok has touched down and you've made your way out of the airport, the drive should take about 30 minutes.
The journey will take approximately 1 hour 5 minutes on public transport.
Hang up the 'Do not disturb' sign and unwind at a hotel close to DMK. Here are a few options where you can settle in after your flight from Colombo to Bangkok:
Chic Car Rent, asap car hire and Hertz make picking up a Don Mueang International Airport rental car simple. These trusted companies are located around or in the terminal and will have you behind the wheel before you know it.
Get the pick of the lot. Reserving your ride from DMK three weeks ahead of time often means better prices and a wider selection of vehicles.

Best time to go to Bangkok

April is the quietest month for flights from Colombo to Bangkok, while July is the most popular. Find the best time to go to Bangkok based on whether you want a bustling atmosphere or a more laid-back vibe.
When booking your Colombo to Bangkok tickets, think about the kind of weather you prefer. April is the warmest month in Bangkok, with temperatures ranging from 26ºC (79ºF) to 37ºC (99ºF).
December has average temperatures of between 19ºC (66ºF) and 33ºC (91ºF). Search for cheap flights from Colombo to Bangkok around that time if you want to travel in cooler conditions.

More about Bangkok

When it comes to looking for somewhere to rest your head, you'll find the best places to stay in Bangkok right here. Check out these hotels once you've booked your flight from Colombo to Bangkok:
Grand Palace and Wat Arun are a couple of leading attractions to put on your Bangkok itinerary. Keep the sightseeing going at Wat Phra Kaew.

Explore more of Thailand

Udon Thani is just one of the many places in Thailand waiting to be explored after you've experienced Bangkok. Around 467 kilometres to the north-east, popular attractions include Nong Prajak Public Park, Krom Luang Prachaksinlapakhom Monument and Chinesisches Tor.
If you're ready to explore another well-known destination in Thailand, head for Chon Buri, about 64 kilometres south-east of Bangkok. Wat Ton Son, Forest and Phra Phutthasihing Hall are key reasons to visit.