Cheap flights from Colombo Bandaranaike Intl Airport to Bangkok from $321

The month of March is, on average, the cheapest month to fly to Bangkok from Colombo Bandaranaike Intl Airport, with most prices found around $147. The month of February is another great option to travel to Bangkok, with average flight prices from Colombo Bandaranaike Intl Airport averaging around $151.

The cheapest day to depart on your flight to Bangkok is on a Saturday when prices can be found for as low as $600. 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 Monday because tickets tend to average around $1,364. 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 Bandaranaike Intl Airport in the evening is the least expensive time of day to depart. momondo users have found prices as low as $561 when looking at flights departing in the evening. Flights to Bangkok are more costly in the morning, with an average ticket price of $799. 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 Bandaranaike Intl - Bangkok flight prices

You are more likely to see cheaper flights to Bangkok from Colombo Bandaranaike Intl Airport when booking weeks ahead of your departure date. In general, you can expect to find flights to Bangkok for around $445 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 Bandaranaike Intl Airport for as low as $374 on momondo.

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

Malaysia Airlines, VietJet Air, and China Eastern are the most popular carriers operating from Colombo Bandaranaike Intl to Bangkok

Thai AirAsia, SriLankan Airlines and Thai Airways are the top three most popular airlines that fly to Bangkok from Colombo Bandaranaike Intl Airport according to our data. Thai AirAsia is the first choice among our users, with 54% of people opting to fly with this airline when travelling to Bangkok. Keep in mind that there are 4 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 111 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 5% of their flights experiencing any sort of delay.

As of June 2026, there are 11 flights per day flying from Colombo Bandaranaike Intl Airport to Bangkok. The most common time of day flights depart is 01:00, with 65% of flights taking off in the morning.

The number of flights available between Colombo Bandaranaike Intl Airport and Bangkok is 82 per week as of June 2026. The most frequent departure day is Fri, with 18% of weekly flights leaving on this day.