Cheap flights from Colombo to Bangkok from $251

The month of November is, on average, the cheapest month to fly to Bangkok from Colombo, with most prices found around $391. The month of October is another great option to travel to Bangkok, with average flight prices from Colombo averaging around $392.

The cheapest day to depart on your flight to Bangkok is on a Saturday when prices can be found for as low as $703. This is often the case because there is less demand to fly during this day of the week. If your travel schedule is flexible, try to avoid departing on a Wednesday because tickets tend to average around $1,335. These prices are subject to change though, so be sure to set up a Price Alert for flights to Bangkok.

Flying to Bangkok from Colombo in the evening is the least expensive time of day to depart. momondo users have found prices as low as $845 when looking at flights departing in the evening. Flights to Bangkok are more costly in the morning, with an average ticket price of $1,034. Departure times in the morning fall within the peak daily travel times, which is why tickets can be more expensive.

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

You are more likely to see cheaper flights to Bangkok from Colombo when booking weeks ahead of your departure date. In general, you can expect to find flights to Bangkok for around $420 when searching weeks before you fly. However, flight prices might be lower outside of this timeframe. For example, people recently found flights to Bangkok from Colombo for as low as $354 on momondo.

There are 2 cabin classes available to choose from on Colombo to Bangkok flights. Cabin price and availability will vary by airline so perform a search above to find the right deals for you.

China Eastern is the most popular carrier operating from Colombo to Bangkok

Thai AirAsia, SriLankan Airlines and Thai Airways are the top three most popular airlines that fly to Bangkok from Colombo according to our data. Thai AirAsia is the first choice among our users, with 67% of people opting to fly with this airline when travelling to Bangkok. Keep in mind that there are 3 different airlines that fly to Bangkok on a routine basis, so you have a few additional options to choose from.

Historically, on average around 11% 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 104 minutes.

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

Thursday is statistically the day of the week that experiences the fewest 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 fewest delays on this route over the last 12 months, with about 6% of their flights experiencing any sort of delay.

9 flights are operational daily from Colombo to Bangkok as of March 2026. The most popular departure time for this route is 01:00, with 69% of flights per day taking off in the morning.

The number of flights available between Colombo and Bangkok is 69 per week as of March 2026. The most frequent departure day is Fri, with 17% of weekly flights leaving on this day.