Cheap Flights from Colombo (CMBA) to London Heathrow (LHR)

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Flight deals from Colombo to London Heathrow Airport

Looking for a cheap last-minute deal or the best return flight from Colombo to London Heathrow Airport? If you want to travel next month, return fares start from £396. Find the lowest prices on one-way and return tickets right here.

Find the cheapest month to fly from Colombo to London Heathrow

We’re always keeping an eye on fares, so you can find the best one in seconds. It looks like Colombo to London Heathrow flights are currently cheapest in July.

Direct flights from Colombo to London Heathrow

Colombo to London: Flight information

The things to know before you go.
Cheapest flight found£257
Cheapest month to flyJuly
Average flight time11 hrs, 40 mins
Most popular airlineSriLankan Airlines
Average flights per week17

Finding cheap flights from Colombo to London Heathrow: Frequently asked questions

The best price we found for a return flight from Colombo to London Heathrow is £393. 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.
11 hours and 40 minutes is the average flight time from Colombo to London Heathrow.
SriLankan Airlines and Air Canada fly direct from Colombo to London Heathrow.
As of April 2026, there are 17 flights per week flying from Colombo to London Heathrow.
The cheapest month to fly from Colombo to London Heathrow is usually April.
After crunching the numbers on our flight calendar, we found that it is currently cheapest to fly from Colombo to London Heathrow Airport on Saturday, 18 April 2026.
Yes – the average flight time is 11 hours and 40 minutes.
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 London Heathrow 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 London is around 40 days in advance, so don’t leave your flight to the last minute.

Flying from Colombo to London Heathrow Airport (LHR): What you need to know

  • Colombo's main base, Bandaranaike International Airport (CMB), is where plenty of awesome adventures begin. Explore the departure options from here when searching for a flight from Colombo to London Heathrow Airport (LHR).

  • London is five hours 30 minutes behind Colombo. London Heathrow Airport is located in London, which is in the UTC+0 timezone.

  • To ensure you catch your flight from Colombo to LHR, leave enough time for things like check-in and baggage drop. Arriving two hours ahead of international departures and an hour before domestic flights is the standard rule.

  • High season means busier airports, so aim to get there even earlier. Give yourself at least two hours before a domestic flight and four hours for international journeys to stay on schedule.

Airports in Colombo

Colombo Bandaranaike International Airport (CMB)

  • You can hop on a direct flight from Colombo to London Heathrow Airport (LHR) departing from Colombo Bandaranaike International Airport (CMB).

  • You can lock in a direct flight from Colombo to London Heathrow Airport with SriLankan Airlines. This popular carrier operates services from CMB.

  • Most passengers prefer to fly with SriLankan Airlines from CMB to LHR.

  • Among carriers on this route, SriLankan Airlines leads the way for on-time arrivals.

  • We make it simple to book cheap flights from Colombo to LHR with a stopover. To explore all the options departing from Colombo Bandaranaike International Airport (CMB), deselect 'Direct flights only.' Then, select a flight that has a stop long enough to tour your chosen city. Top stopovers between CMB and LHR include:

    • Dubai International Airport (DXB)

    • Paris Charles de Gaulle Airport (CDG)

    • Abu Dhabi Zayed International Airport (AUH)

  • Located around 32 kms (20 miles) from the centre of Colombo, CMB can be reached in about 40 minutes by car, depending on traffic. The journey on public transport is roughly 50 minutes.

  • Catching an early flight from Colombo to London Heathrow Airport? Avoid the mad dash to the terminal (and sneak in some bonus sleep) by choosing one of these stays near Colombo Bandaranaike International Airport:

  • Of all flights leaving Colombo Bandaranaike International Airport, 74% land on schedule at their destination.

About London Heathrow Airport (LHR)

Getting from London Heathrow Airport (LHR) to central London

  • London Heathrow Airport is around 24 kms (15 miles) from central London. It takes around 45 minutes or so to get to the city by car.

  • When travelling on public transport, expect a journey time of about 25 minutes.

How to find the cheapest flights from Colombo to London Heathrow Airport (LHR)

  • £257 is the lowest price for a one-way ticket from Colombo to London Heathrow Airport. A return flight starts from £393. These fares can change based on demand.

  • To snag cheap flights from Colombo to LHR, book your ticket five months ahead of your planned departure.

  • The best month for landing cheap Colombo to London Heathrow Airport tickets is October. Use the 'Whole month' tool to compare flight prices, then select the dates with the lowest fares.

  • There's no need to search every day to find out if fares have dropped when you set up a Price Alert. We'll let you know as soon as a lower fare pops up on plane tickets from Colombo to LHR.

  • Find a cheap flight from Colombo to London Heathrow Airport by using the search filters. Choose your ideal times, airlines and number of stops, then sort the results by 'Cheapest' for the best deals.

The best time to fly from Colombo to London Heathrow Airport (LHR)

  • July is the most popular month for flights from Colombo to London Heathrow Airport (LHR). Visit London in January if you'd rather avoid peak season.

  • The warmest month in London is July, with temperatures ranging between 11ºC and 26ºC. Lock in your Colombo to LHR plane ticket then if that's your definition of good weather.

  • January has temperatures of between 0ºC and 9ºC. Search for cheap tickets from Colombo to London Heathrow Airport around that time if you want to travel in cooler conditions.

More about London

  • When it comes to searching for somewhere to lay your head, you'll find the top stays in London right here. Check out these options after locking in your flight from Colombo to London Heathrow Airport:

  • Your trip to London won't be complete without checking out the sights. Highlights that belong on your itinerary include The British Museum, Westminster Abbey and Big Ben.

Explore more of the United Kingdom

  • London has plenty to offer, but there are so many other parts of the United Kingdom just waiting to be explored. About 153 kms (95 miles) northwest of London, a trip to Birmingham will keep your itinerary packed. Don't miss top attractions like Birmingham Museum & Art Gallery, Birmingham Hippodrome Theatre and Bournville Experience.

  • If there's time to check out another well-known destination in the United Kingdom, head for Bristol, roughly 145 kms (90 miles) west of London. Banksey, Clifton Suspension Bridge and Bristol International Balloon Fiesta are key reasons to visit.

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