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Cheap Flights from Phnom Penh (PNH) to Colombo (CMBA)

Compare Phnom Penh 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 Phnom Penh to Colombo

Looking for a cheap last-minute deal or the best return flight from Phnom Penh to Colombo? Find the lowest prices on one-way and return tickets right here.
Colombo.$541 per passenger.Departing Fri, 22 Aug, returning Mon, 25 Aug.Return flight with Thai AirAsia.Outbound indirect flight with Thai AirAsia, departs from Phnom Penh on Fri, 22 Aug, arriving in Colombo Bandaranayake.Inbound indirect flight with Thai AirAsia, departs from Colombo Bandaranayake on Mon, 25 Aug, arriving in Phnom Penh.Price includes taxes and charges.From $541, select.
Colombo.$560 per passenger.Departing Sun, 21 Sep, returning Wed, 1 Oct.Return flight with Thai AirAsia and AirAsia.Outbound indirect flight with Thai AirAsia, departs from Phnom Penh on Sun, 21 Sep, arriving in Colombo Bandaranayake.Inbound indirect flight with AirAsia, departs from Colombo Bandaranayake on Wed, 1 Oct, arriving in Phnom Penh.Price includes taxes and charges.From $560, select.
Colombo.$570 per passenger.Departing Fri, 22 Aug, returning Fri, 12 Sep.Return flight with Thai AirAsia and AirAsia.Outbound indirect flight with Thai AirAsia, departs from Phnom Penh on Fri, 22 Aug, arriving in Colombo Bandaranayake.Inbound indirect flight with AirAsia, departs from Colombo Bandaranayake on Fri, 12 Sep, arriving in Phnom Penh.Price includes taxes and charges.From $570, select.
Colombo.$574 per passenger.Departing Tue, 16 Sep, returning Thu, 18 Sep.Return flight with Thai AirAsia and AirAsia.Outbound indirect flight with Thai AirAsia, departs from Phnom Penh on Tue, 16 Sep, arriving in Colombo Bandaranayake.Inbound indirect flight with AirAsia, departs from Colombo Bandaranayake on Thu, 18 Sep, arriving in Phnom Penh.Price includes taxes and charges.From $574, select.
Colombo.$577 per passenger.Departing Mon, 17 Nov, returning Mon, 1 Dec.Return flight with Thai AirAsia and AirAsia.Outbound indirect flight with Thai AirAsia, departs from Phnom Penh on Mon, 17 Nov, arriving in Colombo Bandaranayake.Inbound indirect flight with AirAsia, departs from Colombo Bandaranayake on Mon, 1 Dec, arriving in Phnom Penh.Price includes taxes and charges.From $577, select.
Colombo.$578 per passenger.Departing Sun, 19 Oct, returning Thu, 30 Oct.Return flight with Thai AirAsia and AirAsia.Outbound indirect flight with Thai AirAsia, departs from Phnom Penh on Sun, 19 Oct, arriving in Colombo Bandaranayake.Inbound indirect flight with AirAsia, departs from Colombo Bandaranayake on Thu, 30 Oct, arriving in Phnom Penh.Price includes taxes and charges.From $578, select.
Colombo.$586 per passenger.Departing Mon, 17 Nov, returning Wed, 26 Nov.Return flight with Thai AirAsia.Outbound indirect flight with Thai AirAsia, departs from Phnom Penh on Mon, 17 Nov, arriving in Colombo Bandaranayake.Inbound indirect flight with Thai AirAsia, departs from Colombo Bandaranayake on Wed, 26 Nov, arriving in Phnom Penh.Price includes taxes and charges.From $586, select.
Colombo.$594 per passenger.Departing Thu, 5 Feb, returning Mon, 9 Feb.Return flight with AirAsia Cambodia and Thai AirAsia.Outbound indirect flight with AirAsia Cambodia, departs from Phnom Penh on Thu, 5 Feb, arriving in Colombo Bandaranayake.Inbound indirect flight with Thai AirAsia, departs from Colombo Bandaranayake on Mon, 9 Feb, arriving in Phnom Penh.Price includes taxes and charges.From $594, select.

Find the cheapest month to fly from Phnom Penh to Colombo

We’re always keeping an eye on fares, so you can find the best one in seconds. It looks like Phnom Penh to Colombo flights are currently cheapest in August.
Jul
from $775
Aug
from $541
Sep
from $574
Oct
from $578
Nov
from $586
Dec
from $595
Jan
from $600
Feb
from $594
Mar
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Apr
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May
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Jun
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Alternative Phnom Penh to Colombo routes

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

Phnom Penh to Colombo: Flight information

The things to know before you go.
Cheapest flight found$541
Cheapest month to flyAugust

Finding cheap flights from Phnom Penh 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 Phnom Penh to Colombo is $541. 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 Phnom Penh to Colombo. But we found flights with one or more stops from $541.
As of July 2025, there are no flights flying from Phnom Penh to Colombo.
The cheapest month to fly from Phnom Penh to Colombo is usually August.
If you're flying from Phnom Penh 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 $541.
After crunching the numbers on our flight calendar, we found that it's currently cheapest to fly from Phnom Penh Airport to Colombo on Friday, 22 August 2025.
No airlines currently offer direct flights between Phnom Penh 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 July, the average temperature is usually around 26°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, Thai AirAsia offers the cheapest flight tickets to Colombo.

Flying from Phnom Penh International Airport (PNH) to Colombo: what you need to know

  • Colombo is one hour 30 minutes behind Phnom Penh, where Phnom Penh International Airport is located. Colombo follows the UTC+5:30 timezone.

  • For hassle-free travel, arrive at the airport two hours ahead of international flights and an hour before domestic departures. This leaves you with plenty of time to board your PNH to Colombo flight.

  • If you're jetting off during a major holiday or another peak period, give yourself more time. A good general rule is two hours ahead of domestic flights and up to four hours before international departures. Lines at security and check-in will be longer.

  • Think about adding a stopover to potentially unlock a cheaper flight ticket from PNH to Colombo. Just uncheck 'Direct flights only' during your search. Break up your journey by stopping at one of these connection hubs:

    • Kuala Lumpur International Airport (KUL)

    • Suvarnabhumi Airport (BKK)

    • Changi International Airport (SIN)

  • To reach PNH from central Phnom Penh, it'll take around 30 minutes if you're going by car. It's roughly 10 kilometres from the airport to the city centre.

  • Have an early flight from Phnom Penh International Airport to Colombo? Avoid the last-minute rush to the airport (and catch some extra z's) by choosing one of these stays near PNH:

  • 74.4% of flights leaving from Phnom Penh International Airport arrive at their destination on schedule.

How to find the cheapest flights from Phnom Penh International Airport (PNH) to Colombo

  • $223 is the cheapest price we've seen for a one-way Phnom Penh International Airport to Colombo flight. A round-trip flight ticket right now is $541. Depending on when you book and the availability, these fares could change.

  • Booking ahead of time is often the key to locking in a cheap flight from PNH to Colombo. Airlines adjust prices based on demand, so the nearer your departure date, the more you'll likely pay.

  • If you can be flexible with your trip dates, use the 'Whole month' search tool. It'll show you the lowest price across every month when looking for your Phnom Penh International Airport to Colombo ticket.

  • Save time looking for cheap flights from PNH to Colombo by creating a Price Alert. You'll get an email or push notification on the app when a new low fare is offered.

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

Airports in Colombo

Colombo Ratmalana Airport (RML)

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

  • When travelling on public transport, expect a journey time of around 1 hour 15 minutes.

  • The last thing you need is a lengthy journey to your hotel if you're arriving on a late flight from Phnom Penh International Airport to Colombo. Book one of these accommodation options near RML instead:

Bandaranaike International Airport (CMB)

  • The centre of Colombo is about 32 kilometres from Bandaranaike International Airport (CMB). After your flight from Phnom Penh International Airport to Colombo has touched down and you've made your way out of the airport, the drive should take about 40 minutes.

  • The trip will take about 1 hour 30 minutes on public transport.

  • Place the 'Do not disturb' sign on your door and rest at a hotel near CMB. Here are a few options where you can check in after your PNH to Colombo flight:

  • Sr Rent A Car, Green Motion and Sixt make picking up a Bandaranaike International Airport rental car easy and quick. These trusted providers are located in or around the terminal and will have you behind the wheel before you know it.

  • Avoid paying extra. Booking your ride two weeks ahead of your arrival at CMB will save you money.

Best time to go to Colombo

  • Plan your trip to Colombo during the high season if you want a lively atmosphere, but remember that hotel prices tend to be higher. Alternatively, book your flights from Phnom Penh International Airport to Colombo in the low season when prices are cheaper and it's quieter.

  • When booking your Phnom Penh International Airport to Colombo flight ticket, think about the kind of weather forecast you're hoping for. March is the warmest month in Colombo, with temperatures ranging from 24ºC (75ºF) to 33ºC (91ºF).

  • January sees average temperatures of between 22ºC (72ºF) and 32ºC (90ºF). Look for a cheap ticket from PNH to Colombo around that time if you like cooler conditions.

More about Colombo

  • Start your Colombo trip right by choosing the ideal place to stay. After booking your flight from Phnom Penh International Airport to Colombo, browse our range of hotels including:

  • All great adventures should include some sightseeing. Independence Square & Independence Memorial Hall, Gangaramaya Temple and Viharamahadevi Park are essential stops on your Colombo itinerary.

Explore more of Sri Lanka

  • You've seen Colombo, now it's time to explore more of Sri Lanka. Travel around 306 kilometres north to Jaffna to check off its leading attractions. From Jaffna Fort to Dambakola Patuna Sangamitta Temple and Jaffna Public Library, you'll have a full itinerary ahead.

  • If you want to check out another great destination in Sri Lanka, head for Trincomalee, roughly 241 kilometres north-east of Colombo. Koneswaram Temple, Fort Frederick and Marble Beach are key highlights.

Plan the rest of your trip from Phnom Penh to Colombo

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