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Cheap flights from Colombo to Samui International

Compare Colombo to Samui International flight deals

Find the cheapest month or even day of the year to fly to Samui International

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Flight deals from Colombo to Samui International Airport

Looking for a cheap last-minute deal or the best return flight from Colombo to Samui International Airport? If you want to travel next month, return fares start from $691. Find the lowest prices on one-way and return tickets right here.
Koh Samui.$286 per passenger.Departing Fri, 24 Apr.One-way flight with AirAsia.Outbound indirect flight with AirAsia, departs from Colombo Bandaranayake on Fri, 24 Apr, arriving in Samui International.Price includes taxes and charges.From $286, select.
Koh Samui.$305 per passenger.Departing Fri, 5 Jun.One-way flight with Thai AirAsia.Outbound indirect flight with Thai AirAsia, departs from Colombo Bandaranayake on Fri, 5 Jun, arriving in Samui International.Price includes taxes and charges.From $305, select.
Koh Samui.$315 per passenger.Departing Thu, 21 May.One-way flight with Thai AirAsia.Outbound indirect flight with Thai AirAsia, departs from Colombo Bandaranayake on Thu, 21 May, arriving in Samui International.Price includes taxes and charges.From $315, select.
Koh Samui.$353 per passenger.Departing Wed, 25 Mar.One-way flight with Thai AirAsia.Outbound indirect flight with Thai AirAsia, departs from Colombo Bandaranayake on Wed, 25 Mar, arriving in Samui International.Price includes taxes and charges.From $353, select.
Koh Samui.$546 per passenger.Departing Thu, 17 Sep.One-way flight with Cathay Pacific.Outbound indirect flight with Cathay Pacific, departs from Colombo Bandaranayake on Thu, 17 Sep, arriving in Samui International.Price includes taxes and charges.From $546, select.
Koh Samui.$550 per passenger.Departing Sun, 23 Aug.One-way flight with Singapore Airlines.Outbound indirect flight with Singapore Airlines, departs from Colombo Bandaranayake on Sun, 23 Aug, arriving in Samui International.Price includes taxes and charges.From $550, select.
Koh Samui.$557 per passenger.Departing Mon, 13 Jul.One-way flight with Cathay Pacific.Outbound indirect flight with Cathay Pacific, departs from Colombo Bandaranayake on Mon, 13 Jul, arriving in Samui International.Price includes taxes and charges.From $557, select.
Koh Samui.$575 per passenger.Departing Fri, 4 Dec.One-way flight with Singapore Airlines.Outbound indirect flight with Singapore Airlines, departs from Colombo Bandaranayake on Fri, 4 Dec, arriving in Samui International.Price includes taxes and charges.From $575, select.
Koh Samui.$580 per passenger.Departing Thu, 7 Jan.One-way flight with Thai Airways.Outbound indirect flight with Thai Airways, departs from Colombo Bandaranayake on Thu, 7 Jan, arriving in Samui International.Price includes taxes and charges.From $580, select.

Find the cheapest month to fly from Colombo to Samui International

We’re always keeping an eye on fares, so you can find the best one in seconds. It looks like Colombo to Samui International flights are currently cheapest in April.
Mar
from $353
Apr
from $286
May
from $315
Jun
from $305
Jul
from $557
Aug
from $550
Sep
from $546
Oct
Find prices
Nov
Find prices
Dec
from $575
Jan
from $580
Feb
Find prices

Colombo to Samui International: Alternative routes

Compare routes from Colombo to Koh Samui below. You may find an airport to fly into that's cheaper, faster, or easier than Samui International.

Samui International

5km from central Koh Samui
ClosestCheapest
from $286
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Colombo to Koh Samui: Flight information

The things to know before you go.
Cheapest flight found$286
Cheapest month to flyApril

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

The best price we found for a return flight from Colombo to Samui International is $691. 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 Colombo to Samui International. But we found flights with one stop from $691.
As of March 2026, there are no flights flying from Colombo to Samui International.
The cheapest month to fly from Colombo to Samui International is usually April.
After crunching the numbers on our flight calendar, we found that it is currently cheapest to fly from Colombo to Samui International Airport on Friday, 17 April 2026.
No airlines currently offer direct flights between Colombo and Samui International Airport. 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 Samui International 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 Koh Samui is around 40 days in advance, so don’t leave your flight to the last minute.
The cheapest airline that flies to Samui International is Thai AirAsia .

Flying from Colombo to Ko Samui International Airport (USM): What you need to know

  • The timezone in Koh Samui is UTC+7, which is one hour 30 minutes ahead of Colombo. Ko Samui International Airport is located in Koh Samui.

  • To ensure you catch your flight from Colombo to USM, leave enough time to navigate the airport and find your gate. Arriving two hours ahead of international departures and one hour before domestic flights is the standard rule.

  • Travelling during a peak month like February? Major public holidays and other popular seasons can lead to longer lines at security. Be extra cautious and get there up to four hours ahead of an international flight and two hours before a domestic departure.

Airports in Colombo

Colombo Bandaranaike International Airport (CMB)

  • Consider adding a stopover to find cheap flights from Colombo to USM. Just uncheck 'Direct flights only' when browsing departures from Colombo Bandaranaike International Airport (CMB). Take a break from travelling at one of these popular airports:

    • Bangkok Suvarnabhumi International Airport (BKK)

    • Singapore Changi Airport (SIN)

    • Hong Kong International Airport (HKG)

  • CMB is about 32 kilometres from central Colombo. If you're ride-sharing, catching a taxi or driving from the centre, it'll take 40 minutes or so to get there, depending on traffic. If you're planning to take public transport, expect the trip time to be around 50 minutes.

  • Catching an early flight from Colombo to Ko Samui International Airport? Avoid rushing to the terminal (and sneak in some extra snooze time) by staying at one of these stays near Colombo Bandaranaike International Airport:

  • Of the flights that depart from Colombo Bandaranaike International Airport, 74% touch down on time at their destination.

About Ko Samui International Airport (USM)

  • Consider booking a hotel close to USM if you're catching a late flight from Colombo to Ko Samui International Airport. Select one of these options and be under the covers in no time flat:

  • Say yes to new adventures by picking up a Ko Samui International Airport rental car. Grab a set of wheels from asap car hire, Hertz or Drive Car Hire to explore Koh Samui and beyond.

  • To get the best deal, reserve your ride around four weeks in advance of your Colombo to Ko Samui International Airport flight.

Getting from Ko Samui International Airport (USM) to central Koh Samui

  • From Ko Samui International Airport, central Koh Samui is around 11 kilometres away. It takes about 20 minutes to get to the city centre by car.

  • It takes roughly 30 minutes to get there using public transport.

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

  • $286 is the lowest price for a one-way ticket from Colombo to Ko Samui International Airport. A return flight starts from $691. These prices can change depending on demand.

  • Booking ahead of time is often the key to finding a cheap flight from Colombo to USM. Flight prices rise as demand increases, so the closer your departure date, the more expensive your ticket may be.

  • The 'Whole month' search tool shows you the cheapest Colombo to Ko Samui International Airport tickets across every month. It's a great way to find a bargain if your plans aren't set in stone.

  • There's no need to check every day to find out if fares have dropped when you set up a Price Alert. We'll notify you when a better deal comes up on plane tickets from Colombo to USM.

  • Lock in a cheap flight from Colombo to Ko Samui International Airport by using the search filters. Select your preferred times, number of stops and airlines, then sort the results by 'Cheapest' for the best deals.

Explore more of Thailand

  • You've seen Koh Samui, now it's time to explore more of Thailand. Journey about 129 kilometres south to Nakhon Si Thammarat to check off its top attractions. From Wat Phra Phrom to Wat Pho Sadet and Wat Yai Chai Mongkol, you'll have a packed itinerary ahead.

  • Phuket is another sought-after destination in Thailand and is around 257 kilometres southwest of Koh Samui. No trip is complete without a visit to V.MarineTour- Phi Phi Islands Day Trip - Private Boat Charters, Sunrise Beach and Paradise Beach.

Plan the rest of your trip from Colombo to Koh Samui

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