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Search round tripsInternational route CMB to BKK
Cheap flights from Colombo to Bangkok
Multiple airlines fly nonstop from Colombo to Bangkok. 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
CMB
Colombo
BKK
Bangkok
- Distance
- 2,392 km
Return
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Looking for Colombo to Bangkok 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
Colombo to Bangkok flight guide
Flying from Colombo to Bangkok
In short
SriLankan Airlines, Thai Airways International and Thai AirAsia fly nonstop from Bandaranaike International Airport (CMB) near Colombo to Bangkok. The 2,392 km flight takes about 3 hours 30 minutes. Bangkok is a regular shopping and holiday trip from Sri Lanka, and SriLankan's flight also feeds passengers heading on to East Asia.
Full-service into Suvarnabhumi, Thai AirAsia into Don Mueang
SriLankan Airlines and Thai Airways arrive at Suvarnabhumi (BKK) with a checked bag and meal in the fare. Thai AirAsia arrives at Don Mueang (DMK) and charges for hold luggage, food and seat choice. Shoppers expecting a heavy return should price a full-service ticket for the way home.
Bus 187 or a taxi to Katunayake
Bandaranaike International Airport is at Katunayake, about 35 km north of Colombo. The route 187 air-conditioned bus runs 24 hours a day between Colombo Fort Railway Station and the airport along the Colombo–Katunayake Expressway, taking about 50 minutes. By taxi the expressway, 28.87 km long, cuts the trip to roughly 30 to 45 minutes. Hotels in Negombo are closer for early departures.
Filing the TDAC before you leave Colombo
File the Thailand Digital Arrival Card (TDAC) on tdac.immigration.go.th before you fly. It is free, opens three days before arrival and covers every non-Thai passenger.
Since 15 September 2026, a 30-day visa exemption for 60 countries and territories has replaced the 60-day scheme. Sri Lanka was not named in that announcement, so Sri Lankan passport holders should check the Thai e-Visa portal. Visitors ending a Sri Lanka holiday should check their own nationality too, using our Thailand visa page as a guide.
Rail Link, Grab and the S1 bus to Sanam Luang
Suvarnabhumi lies about 25 km east of central Bangkok. The Airport Rail Link reaches Phaya Thai in about 27 minutes and meets the BTS Skytrain; Makkasan links to the MRT Blue Line. Metered taxis and Grab wait outside arrivals, and the S1 bus runs to Sanam Luang in the old city for 60 baht between 06:00 and 17:00.
Don Mueang buses and a short ride to Pratunam
Don Mueang is in the north. The A1 bus runs via BTS Chatuchak to Mo Chit 2 from 06:50 to 23:59, and the A2 via Chatuchak to Victory Monument from 05:00 to 22:00; both cost 30 baht from Gate 6 of the international terminal. Pratunam's markets are a short ride from Victory Monument. The SRT Red Line runs to Krung Thep Aphiwat Central Terminal for the MRT Blue Line.
Crossing to Suvarnabhumi for the Dhaka flights
The Dhaka flights on Biman, US-Bangla and Thai Airways leave from Suvarnabhumi (see Bangkok to Dhaka flights). If you land at Don Mueang, minibus 555 crosses to Suvarnabhumi between 06:30 and 20:00 for up to 60 baht, but leave plenty of time for the road and a new check-in.
When returning to Sri Lanka, remember that every foreign national needs a new ETA from eta.gov.lk before arrival. Colombo also has direct flights to Bangladesh: see Colombo to Dhaka 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 ETARoyal Thai Embassy
See all 7 sources
Colombo to Bangkok flights at a glance
Various airlines fly nonstop from Colombo (CMB) to Bangkok (BKK). The 2,392 km flight takes about 3 hours 30 minutes.
| Flight time | 3h 30m nonstop |
|---|---|
| Distance | 2,392 km |
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FromTo NRT DAC TokyoDhaka Available airlines1 airline- Biman Bangladesh Airlines
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Flights from Sri Lanka1 route
FromTo CMB DAC ColomboDhaka Available airlines2 airlines- FitsAir
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Airlines flying Colombo to Bangkok
Multiple airlines fly this route nonstop.
Departure and arrival airports
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
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
- Getting into town
- Suvarnabhumi lies about 25 km east of central Bangkok. The Airport Rail Link runs to Phaya Thai in about 27 minutes and meets the BTS Skytrain there; Makkasan station connects to the MRT Blue Line. Metered taxis and Grab wait outside arrivals.
How to book Colombo to Bangkok 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.
e-Visafor Bangladeshi passports
Apply for the Thai e-Visa early
Apply for the Thai e-Visa online well before you fly and fill in the Thailand Digital Arrival Card in the 72 hours before landing; airlines check both at check-in.
Where to stay in Bangkok
Hotels and resorts in Bangkok with guest scores, nightly prices and free cancellation.
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Frequently Asked Questions (FAQs)
Getting there
Flights land at both Bangkok airports: a few airlines at Suvarnabhumi, and Thai AirAsia at Don Mueang. 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.
Suvarnabhumi lies about 25 km east of central Bangkok. The Airport Rail Link runs to Phaya Thai in about 27 minutes and meets the BTS Skytrain there; Makkasan station connects to the MRT Blue Line. Metered taxis and Grab wait outside arrivals. Don Mueang is north of the city. The SRT Dark Red Line stops at the airport and runs to Krung Thep Aphiwat Central Terminal (Bang Sue), where it meets the MRT Blue Line; airport buses and metered taxis cover the rest of the city.
Yes. Biman, US-Bangla and Thai Airways fly Bangkok to Dhaka from Suvarnabhumi. If you land at Don Mueang, allow at least four hours to transfer by road and check in again. On separate tickets you clear Thai immigration and collect your bag, so you need a Thai visa. See Bangkok to Dhaka flights.
About 35 km. The Colombo–Katunayake Expressway makes it a 30 to 45 minute drive outside rush hour.
General
The clock moves one hour and 30 minutes forward on landing in Thailand (Thailand is UTC+7). Neither side uses daylight saving, so the gap stays the same all year.
Yes; see Colombo to Dhaka flights. Going via Bangkok is worth it if you want a few days in Thailand on the way home.
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
It depends on your passport. Thailand's 30-day exemption covers 60 countries and territories from 15 September 2026, and Sri Lanka was not named in the announcement, so check the Thai e-Visa portal. Everyone files the free Thailand Digital Arrival Card.
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.
