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Cheap Flights from Koh Samui (USM) to Colombo (CMBA)

Compare Samui International to Colombo flight deals

Find the cheapest month or even day of the year to fly to Colombo

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Flight deals from Samui International to Colombo

Looking for a cheap last-minute deal or the best return flight from Samui International to Colombo? Find the lowest prices on one-way and return tickets right here.
Colombo.$785 per passenger.Departing Mon, 23 Jun, returning Sun, 29 Jun.Return flight with Scoot and AirAsia.Outbound indirect flight with Scoot, departs from Samui International on Mon, 23 Jun, arriving in Colombo Bandaranayake.Inbound indirect flight with AirAsia, departs from Colombo Bandaranayake on Sun, 29 Jun, arriving in Samui International.Price includes taxes and charges.From $785, select.
Colombo.$892 per passenger.Departing Wed, 28 May, returning Fri, 6 Jun.Return flight with Scoot and AirAsia.Outbound indirect flight with Scoot, departs from Samui International on Wed, 28 May, arriving in Colombo Bandaranayake.Inbound indirect flight with AirAsia, departs from Colombo Bandaranayake on Fri, 6 Jun, arriving in Samui International.Price includes taxes and charges.From $892, select.
Colombo.$1,594 per passenger.Departing Tue, 22 Jul, returning Tue, 29 Jul.Return flight with Singapore Airlines.Outbound indirect flight with Singapore Airlines, departs from Samui International on Tue, 22 Jul, arriving in Colombo Bandaranayake.Inbound indirect flight with Singapore Airlines, departs from Colombo Bandaranayake on Tue, 29 Jul, arriving in Samui International.Price includes taxes and charges.From $1,594, select.
Colombo.$1,604 per passenger.Departing Fri, 8 Aug, returning Sat, 16 Aug.Return flight with Singapore Airlines.Outbound indirect flight with Singapore Airlines, departs from Samui International on Fri, 8 Aug, arriving in Colombo Bandaranayake.Inbound indirect flight with Singapore Airlines, departs from Colombo Bandaranayake on Sat, 16 Aug, arriving in Samui International.Price includes taxes and charges.From $1,604, select.
Colombo.$1,661 per passenger.Departing Thu, 24 Jul, returning Fri, 8 Aug.Return flight with Thai Airways.Outbound indirect flight with Thai Airways, departs from Samui International on Thu, 24 Jul, arriving in Colombo Bandaranayake.Inbound indirect flight with Thai Airways, departs from Colombo Bandaranayake on Fri, 8 Aug, arriving in Samui International.Price includes taxes and charges.From $1,661, select.

Find the cheapest month to fly from Samui International to Colombo

We’re always keeping an eye on fares, so you can find the best one in seconds. It looks like Samui International to Colombo flights are currently cheapest in June.
May
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Jun
from $785
Jul
from $1,594
Aug
from $1,604
Sep
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Oct
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Nov
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Jan
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Mar
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Apr
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Alternative Samui International to Colombo routes

Looking for the cheapest, fastest or easiest route from Samui International to Colombo? You could fly into the following airports instead.

Koh Samui to Colombo: Flight information

The things to know before you go.
Cheapest flight found$787
Cheapest month to flyJune

Finding cheap flights from Samui International to Colombo: Frequently asked questions

There are 5 airports in Colombo: Kelaniya, Colombo Ratmalana, Colombo Bandaranayake, Bentota River, and Katugastota.
The best price we found for a return flight from Samui International to Colombo is $785. This is an estimate based on information collected from different airlines and travel providers over the last 4 days and is subject to change and availability.
Currently, there are no airlines that fly direct from Samui International to Colombo. But we found flights with one or more stops from $785.
As of May 2025, there are no flights flying from Samui International to Colombo.
The cheapest month to fly from Samui International to Colombo is usually May 2025.
If you're flying from Samui International Airport, the cheapest airport near Colombo is Colombo Bandaranayake – which is 27.5 km away from the centre of Colombo. We've found flights into this airport from $785.
After crunching the numbers on our flight calendar, we found that it's currently cheapest to fly from Samui International Airport to Colombo on Monday, 23 June 2025.
No airlines currently offer direct flights between Samui International Airport and Colombo. Most routes have one or more stops.
We show every price from over 1,200 airlines and travel agents, comparing them all so you don’t have to. If you know you want to fly to Colombo but you’re not ready to book, set up a Price Alert. We’ll track prices for you, and let you know when they rise or fall.
We crunched all the numbers in our flight calendar and it looks like the cheapest time to book a flight to Colombo is around 40 days in advance, so don’t leave your flight to the last minute.
In May, the average temperature is usually around 28°C. May is typically the warmest month in Colombo, when it usually averages around 29°C. You can expect the least rain in February. The coldest month is July, with temperatures averaging 25°C. The rainiest month is November.
Currently, Scoot offers the cheapest flight tickets to Colombo.

Travelling from Koh Samui Airport (USM) to Colombo: what you need to know

  • The timezone in Colombo is UTC+5:30. The city is one hour 30 minutes behind Koh Samui, where Koh Samui Airport is located.

  • For a relaxed start to your USM to Colombo flight, leave plenty of time for things like check-in and baggage drop. Arriving two hours ahead of international departures and one hour before domestic flights is the general rule.

  • Taking off during a peak period like a bank holiday? Expect longer queues at check-in and security. Give yourself extra leeway and arrive up to four hours before international flights and two hours before domestic departures.

  • The distance from central Koh Samui to USM is roughly 3 kilometres. Use travel apps like Google Maps for the fastest route, whether you're driving or taking public transport.

  • Catching an early flight from Koh Samui Airport to Colombo? Avoid the last-minute rush to the terminal (and sneak in some extra precious sleep) by choosing one of these stays near USM:

  • Of all flights leaving Koh Samui Airport, 69.38% touch down on time at their destination.

How to find the cheapest flights from Koh Samui Airport (USM) to Colombo

  • The lowest price we've seen for a one-way Koh Samui Airport to Colombo flight is $350. The cheapest price for a return flight is $785. Remember fares may change due to demand at the time of booking.

  • To pick up cheap flights from USM to Colombo, book as early as possible. Airlines usually offer their most competitively priced fares when tickets first go on sale.

  • If you're willing to be flexible with your trip dates, check out the 'Whole month' tool. It'll find the lowest price across each month when searching for a Koh Samui Airport to Colombo ticket.

  • There's no need to check back constantly to see if fares have dropped when you create a Price Alert. We'll let you know as soon as there's an updated deal for cheap flights from USM to Colombo.

  • Pick your preferred departure and arrival times, airlines and number of stops with our filters. Then, sort the results for your flight from Koh Samui Airport to Colombo by 'Fastest,' 'Cheapest' or 'Best.'

Airports in Colombo

Colombo Ratmalana Airport (RML)

  • Colombo Ratmalana Airport (RML) is around 16 kilometres from the centre of Colombo. If you're catching a cab or a ride-share, the drive takes about 40 minutes.

  • If you're travelling on public transport, expect a journey time of around 1 hour 15 minutes.

  • The last thing you need is a long journey to your hotel if you're landing late on a flight from Koh Samui Airport to Colombo. Reserve one of these accommodation options near RML instead:

Bandaranaike International Airport (CMB)

  • Central Colombo is around 32 kilometres from Bandaranaike International Airport (CMB). After your flight from Koh Samui Airport to Colombo has hit the runway and you've made your way out of the airport, expect a drive of around 40 minutes.

  • If you choose to travel on public transport, you'll reach the centre in 1 hour 30 minutes or so.

  • After stepping off your USM to Colombo flight, unwind at a hotel close to CMB. These are some great accommodation options that'll help you get into relaxation mode:

  • Sr Rent A Car, Green Motion and Sixt make picking up a Bandaranaike International Airport rental car quick and easy. These suppliers are located in or around the terminal and will have you on your way in a heartbeat.

  • Avoid paying more than you need to. Booking your ride two weeks ahead of your arrival at CMB can get you a lower rate.

Best time to go to Colombo

  • Plan your trip to Colombo in peak season if you want a lively atmosphere, but remember that prices are generally higher. Alternatively, book flights from Koh Samui Airport to Colombo during low season when prices are cheaper and it's not as busy.

  • Book a Koh Samui Airport to Colombo flight ticket with a departure in March to experience the city during its warmest month. You can expect temperatures to range from 24ºC (75ºF) to 33ºC (91ºF).

  • If you like travelling in cooler conditions, search for a cheap ticket from USM to Colombo in January when temperatures average between 22ºC (72ºF) and 32ºC (90ºF).

More about Colombo

  • When it comes to looking for somewhere to lay your head, you'll find the best places to stay in Colombo right here. Explore these hotels after you've booked your flight from Koh Samui Airport to Colombo:

  • There are so many things to explore in this city it can be hard to work out where to begin. Independence Square & Independence Memorial Hall, Gangaramaya Temple and Viharamahadevi Park are top sights which should feature on any good Colombo itinerary.

Explore more of Sri Lanka

  • Jaffna is just one of the many cities in Sri Lanka waiting to be explored after you've seen Colombo. Around 306 kilometres away to the north, popular attractions include Jaffna Fort, Dambakola Patuna Sangamitta Temple and Jaffna Public Library.

  • Trincomalee is another well-known destination in Sri Lanka and is around 241 kilometres north-east of Colombo. No trip is complete without a visit to Koneswaram Temple, Fort Frederick and Marble Beach.

Plan the rest of your trip from Koh Samui to Colombo

Prices shown on this page are estimated lowest prices only. Found in the last 45 days.