Srilankan Airlines Flights from Colombo to Bangkok

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At the moment, you can catch a direct flight from Colombo to Bangkok with the following airlines, including: Thai AirAsia SriLankan Airlines Thai Airways IndiGo Selected airlines are based on historical data collected from flight bookings users made on Trip.com within the last 90 days.

It takes about 3 hours 36 minutes to fly from Colombo (CMB) to Bangkok (BKK).

By analyzing data from all airlines on the Trip.com flight calendar, it looks like the best time to book a flight from Colombo to Bangkok is around 40 days (6 weeks) in advance, and the best time to fly is usually on Tuesday, Wednesday, and Saturday. Tuesday typically offers the cheapest flights for departure, while Saturday offers the best return deals.

Based on Trip.com data in the past 4 weeks, there is 27 flight per week flying from Colombo to Bangkok. You can check the weekly schedule for popular airlines on this route below: SriLankan Airlines: S/M/T/W/T/F/S -- UL404 (07:56)

To find best deals on flights from Colombo to Bangkok, you can use various tools on Trip.com:
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The cheapest months to fly from Colombo to Bangkok is May, when demand for travel is lower.

After crunching the numbers on our September flight calendar, it's currently cheapest to fly from Colombo to Bangkok on September 24, 2025 with AirAsia Berhad (Malaysia), with prices starting at £89.

You can land at any one of the following hubs in Bangkok, with Bandaranaike International Airport to Don Mueang International Airport (CMB-DMK) is by far the most common option on this route: Suvarnabhumi Airport (BKK) Don Mueang International Airport (DMK).

The time difference between Bangkok and Colombo is 1h.

Tickets can only be changed or cancelled if permitted by airline policy. To submit a change or cancellation request, go to the flight bookings page, select the option to change or cancel your booking, choose the relevant passengers and segment, and submit a request. Please note that additional charges may apply according to the airline ticket policy. However, if the flight has been rescheduled and you would like to change or cancel your ticket, you can submit an involuntary cancellation request. For more details about change and cancellation policies, please check the customer support pages.