Cheap flights from Colombo to Bangkok from $135

The month of October is, on average, the cheapest month to fly to Bangkok Suvarnabhumi Airport from Colombo, with most prices found around $276. The month of November is another great option to travel to Bangkok Suvarnabhumi Airport, with average flight prices from Colombo averaging around $276.

The cheapest day to depart on your flight to Bangkok Suvarnabhumi Airport is on a Monday when prices can be found for as low as $433. This is often the case because there is less demand to fly during this day of the week. On the other hand, Wednesday is the most expensive day to depart from Colombo because it is more convenient for both business and leisure travelers. As a result, prices tend to be around $491.

Our most recent data shows that the best time of day to fly to Bangkok Suvarnabhumi Airport is in the evening. Flights from Colombo to Bangkok Suvarnabhumi Airport during this time can be as low as $291. In the morning is when there is more demand to fly to Bangkok Suvarnabhumi Airport, so prices are often more expensive at around $440 per ticket.

Fly from Colombo Bandaranaike Intl to Bangkok Suvarnabhumi for the best Colombo - Bangkok Suvarnabhumi flight prices

You are more likely to see cheaper flights to Bangkok Suvarnabhumi Airport from Colombo when booking weeks ahead of your departure date. In general, you can expect to find flights to Bangkok Suvarnabhumi Airport for around $298 when searching weeks out. However, flight prices might be lower outside of this timeframe. For example, people recently found flights to Bangkok Suvarnabhumi Airport from Colombo for as low as $277 on momondo.

There are 3 cabin classes available to choose from on Colombo to Bangkok Suvarnabhumi flights. Cabin price and availability will vary by airline so perform a search above to find the right deals for you.

Malaysia Airlines and China Eastern are the most popular carriers operating from Colombo to Bangkok Suvarnabhumi

Thai AirAsia, SriLankan Airlines and AirAsia are the top three most popular airlines that fly to Bangkok Suvarnabhumi Airport from Colombo according to our data. Thai AirAsia is the first choice among our users, with 71% of people opting to fly with this airline when traveling to Bangkok Suvarnabhumi Airport. Keep in mind that there are 6 different airlines that fly to Bangkok Suvarnabhumi Airport on a routine basis, so you have a few additional options to choose from.

Historically, on average around 10% of flights between Colombo and Bangkok have experienced a delay on any given week. The average delay length over the past 12 months has been 105 minutes.

Generally, flights departing at night tend to experience fewer delays. Flights in the evening have, in the past, seen delays more frequently in comparison.

Sunday is statistically the day of the week which experiences the fewest number of delays on this flight route. Wednesday has historically seen more delays on average compared to the rest of the week.

According to our data, Thai Airways have had the least number of delays on this route over the last 12 months; with about 6% of their flights experiencing any sort of delay.

10 flights are operational daily from Colombo to Bangkok Suvarnabhumi Airport as of February 2026. The most popular departure time for this route is 1:00AM, with 81% of flights per day taking off in the morning.

The number of flights available between Colombo and Bangkok Suvarnabhumi Airport is 74 per week as of February 2026. The most frequent departure day is Tue, with 16% of weekly flights leaving on this day.