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Search round tripsInternational route BKK to CMB
Cheap flights from Bangkok to Colombo
Multiple airlines fly nonstop from Bangkok to Colombo. The 2,392 km flight takes about 3 hours 30 minutes.
Fares
Fares are pulled from the airlines and our partners when you search. Search your dates
Nonstop, several airlinesEconomy
BKK
Bangkok
CMB
Colombo
- Distance
- 2,392 km
Return
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Looking for Bangkok to Colombo air tickets and not sure what to pay? Three airlines fly this route, and fares change with demand, so the same seat can cost noticeably more close to a holiday weekend. Put your dates in the search above to compare today's fares and book with bookingMentor.
Everything you should know
Bangkok to Colombo flight guide
Flying from Bangkok to Colombo
In short
A number of airlines fly nonstop from Bangkok to Bandaranaike International Airport (CMB) near Colombo: SriLankan Airlines and Thai Airways International from Suvarnabhumi (BKK), and Thai AirAsia from Don Mueang (DMK). The 2,392 km flight takes about 3 hours 30 minutes. Sri Lanka and Thailand make an easy two-country holiday, with tea country and beaches in one and city and islands in the other, and Buddhist pilgrims travel in both directions.
SriLankan and Thai bags against Thai AirAsia extras
SriLankan Airlines and Thai Airways are full-service and include a checked bag and meal. Thai AirAsia's base fare covers a cabin bag only, and hold luggage, meals and seat choice cost extra. Surfboards and diving kit count as special baggage on most airlines, so ask before booking.
Rail Link to Suvarnabhumi or A1 and A2 buses to Don Mueang
Suvarnabhumi is about 25 km east of central Bangkok, 27 minutes from Phaya Thai on the Airport Rail Link. Don Mueang is in the north, reached by the A1 bus from Mo Chit 2 or the A2 from Victory Monument for 30 baht, or by the SRT Red Line from Krung Thep Aphiwat Central Terminal.
Sri Lanka's ETA and the free 30-day visa for 40 countries
All foreign nationals need an Electronic Travel Authorization (ETA) before arrival, applied for on the official site, eta.gov.lk. Since 25 May 2026, nationals of 40 listed countries have received a free 30-day tourist ETA, with a second entry allowed within the 30 days. Check the official list for your own passport, as other nationalities pay a processing fee. Apply only on eta.gov.lk and ignore agents. Stays beyond 30 days need a paid extension.
E03 expressway or bus 187 from Katunayake
Bandaranaike International Airport is at Katunayake, about 35 km north of Colombo. The Colombo–Katunayake Expressway (E03), 28.87 km long and open since October 2013, brings the city within roughly 30 to 45 minutes by taxi.
The cheapest option is the route 187 airport bus run with the airport operator. Its air-conditioned coaches run 24 hours a day along the expressway to Colombo Fort Railway Station, a trip of about 50 minutes, where trains leave for Kandy, Galle and the hill country. Negombo's beach hotels are much closer to the airport, which suits a late arrival.
Arriving from Dhaka for the Colombo flight
Travellers flying in from Dhaka on Biman, US-Bangla or Thai Airways land at Suvarnabhumi (see our Dhaka to Bangkok flights page), the same airport as the SriLankan and Thai Airways departures. A Thai AirAsia flight from Don Mueang means crossing the city and checking in again, so leave at least four hours. Our Sri Lanka visa page covers the ETA in more detail. Dhaka also has its own flights to Colombo: see Dhaka to Colombo flights.
Fact-checked by the bookingMentor Travel Desk
Reviewed · Updated when rules or prices change
Checked against trusted sources:
Airport and Aviation Services Sri LankaSri Lanka ETASuvarnabhumi Airport
Bangkok to Colombo flights at a glance
Various airlines fly nonstop from Bangkok (BKK) to Colombo (CMB). The 2,392 km flight takes about 3 hours 30 minutes.
| Flight time | 3h 30m nonstop |
|---|---|
| Distance | 2,392 km |
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Flights and fares for your dates
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Flights from Bangladesh6 routes
FromTo DAC CXB DhakaCox's Bazar FromTo DAC ZYL DhakaSylhet FromTo DAC CGP DhakaChattogram FromTo DAC RJH DhakaRajshahi Available airlines2 airlines- US-Bangla Airlines
- Biman Bangladesh Airlines
FromTo ZYL DAC SylhetDhaka FromTo CGP DAC ChattogramDhaka
Flights from United Arab Emirates4 routes
FromTo DXB DAC DubaiDhaka FromTo AUH CGP Abu DhabiChattogram FromTo AUH DAC Abu DhabiDhaka FromTo AUH ZYL Abu DhabiSylhet Available airlines1 airline- Biman Bangladesh Airlines
Flights from India2 routes
FromTo CCU DAC KolkataDhaka FromTo BOM DAC MumbaiDhaka Available airlines2 airlines- Air India
- IndiGo
Flights from Japan1 route
FromTo NRT DAC TokyoDhaka Available airlines1 airline- Biman Bangladesh Airlines
Flights from Ethiopia1 route
FromTo ADD DAC Addis AbabaDhaka Available airlines1 airline- Ethiopian Airlines
Flights from Bahrain1 route
FromTo BAH DAC ManamaDhaka Available airlines1 airline- Gulf Air
Flights from Thailand1 route
Flights from Egypt0 routes
Flights from China1 route
Flights from Sri Lanka1 route
FromTo CMB DAC ColomboDhaka Available airlines2 airlines- FitsAir
- SriLankan Airlines
Airlines flying Bangkok to Colombo
Full-service and low-cost airlines both fly the route, so compare what each fare includes.
Departure and arrival airports
BKK Suvarnabhumi Airport
- Codes
- IATA BKK, DMK
- City
- Bangkok, Thailand
- Terminal (BKK)
- One main terminal building with the SAT-1 satellite concourse, reached by an underground automated train.
- Terminal (DMK)
- Terminal 1 handles international flights and Terminal 2 domestic ones.
- Time zone
- UTC+7, no daylight saving
CMB Bandaranaike International Airport
- Codes
- IATA CMB
- City
- Colombo, Sri Lanka
- Getting into town
- Bandaranaike International Airport is at Katunayake, about 35 km north of Colombo. The airport expressway brings the city within roughly 30 to 45 minutes by taxi; Negombo's beach hotels are closer still.
- Time zone
- UTC+5:30
How to book Bangkok to Colombo for less
Practical points for booking this route.
2Bangkok airports
Check which Bangkok airport
Suvarnabhumi (BKK) and Don Mueang (DMK) are far apart. Low-cost flights on this route use Don Mueang, so match the airport to your hotel or connecting flight before you pay.
Low-costbags are extra
Add bags when you book
Thai AirAsia charge for checked baggage. It is cheaper added online at booking than at the airport.
3airlines on the route
Compare the total, not the headline fare
Put your dates into the search above and compare the price with baggage, seats and meals included, not just the base fare.
Visacheck before booking
Have your documents ready
Bangladeshi passport holders should check the entry rules on our Sri Lanka visa page before booking.
Where to stay in Colombo
Hotels and resorts in Colombo with guest scores, nightly prices and free cancellation.
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Frequently Asked Questions (FAQs)
Getting there
From Suvarnabhumi, a few airlines fly the route; from Don Mueang, Bangkok's low-cost airport, it is Thai AirAsia. Schedules change by season, so check the flights for your dates in the search above.
About 3 hours 30 minutes in the air. The two airports are 2,392 km apart in a straight line; actual times vary a little by airline, aircraft and wind.
Both. A few airlines use Suvarnabhumi (BKK); Thai AirAsia uses Don Mueang (DMK). The airports are on opposite sides of the city, so check the code on your ticket.
Bandaranaike International Airport is at Katunayake, about 35 km north of Colombo. The airport expressway brings the city within roughly 30 to 45 minutes by taxi; Negombo's beach hotels are closer still.
Yes, Colombo also has its own flights from Dhaka; see Dhaka to Colombo flights. Flying via Bangkok makes sense when you want a stopover in Thailand on the way.
About 35 km. The Colombo–Katunayake Expressway makes it a 30 to 45 minute drive outside rush hour.
Yes. Route 187 air-conditioned buses run 24 hours a day from Bandaranaike International Airport along the expressway to Colombo Fort Railway Station, taking about 50 minutes.
General
The clock moves one hour and 30 minutes back from Thai time (Thailand is UTC+7). Neither side uses daylight saving, so the gap stays the same all year.
Yes. Fly Dhaka to Bangkok on Biman, US-Bangla or Thai Airways, all of which land at Suvarnabhumi, then take one of the Colombo flights. Booking both legs on one Thai Airways ticket, where available, keeps you airside with your bag checked through. Two separate tickets mean clearing Thai immigration, which needs a Thai visa.
What's included
It depends on the airline. Thai AirAsia is a low-cost carrier whose basic fares include only a cabin bag, so add checked baggage when you book. The full-service airlines normally include a checked bag; the allowance is shown on your booking.
Visa & documents
Every foreign national needs an ETA from eta.gov.lk before arrival. Since 25 May 2026, nationals of 40 listed countries get a free 30-day tourist ETA; other nationalities pay a processing fee. Check the official list for your passport.
Stay & facilities
On the full-service airlines, request a Muslim (halal) meal when you book or at least 24 hours before departure through the airline's manage-booking page. On Thai AirAsia, meals are bought online or on board; check the menu for halal options.
