Cheap flights from Colombo to London from $540

The month of October is, on average, the cheapest month to fly to London Heathrow Airport from Colombo, with most prices found around $1,196. If you aren’t able to travel during the month of October, then book flights to London Heathrow Airport from Colombo during November instead. Flights to London Heathrow Airport in November, while not as cheap as those in October, still average around $1,255.

Our data shows that Tuesday is the least expensive day to fly to London Heathrow Airport. Tickets to fly out on this day can be as low as $1,842. When flying out on a Monday, the most expensive travel day of the week, you can expect to see flight prices from Colombo to London Heathrow Airport for around $1,859.

Fly from Colombo Bandaranaike Intl to London Heathrow for the best Colombo - London Heathrow flight prices

You are more likely to see cheaper flights to London Heathrow Airport from Colombo when booking weeks ahead of your departure date. In general, you can expect to find flights to London Heathrow Airport for around $1,391 when searching weeks before you fly. However, flight prices might be lower outside of this timeframe. For example, people recently found flights to London Heathrow Airport from Colombo for as low as $1,159 on momondo.

Gulf Air, Air India, and China Eastern are the most popular carriers operating from Colombo to London Heathrow

British Airways, Etihad Airways and SriLankan Airlines are the top three most popular airlines that fly to London Heathrow Airport from Colombo according to our data. British Airways is the first choice among our users, with 29% of people opting to fly with this airline when travelling to London Heathrow Airport. Keep in mind that there are 4 different airlines that fly to London Heathrow Airport on a routine basis, so you have a few additional options to choose from.

Historically, on average around 14% of flights between Colombo and London have experienced a delay on any given week. The average delay length over the past 12 months has been 105 minutes.

Generally, flights departing in the morning tend to experience fewer delays. Flights departing at night have, in the past, seen delays more frequently in comparison.

Tuesday is statistically the day of the week that experiences the fewest delays on this flight route. Sunday has historically seen more delays on average compared to the rest of the week.

According to our data, SriLankan Airlines have had the fewest delays on this route over the last 12 months, with about 14% of their flights experiencing any sort of delay.

As of March 2026, there are 2 flights per day flying from Colombo to London Heathrow Airport. The most common time of day flights depart is 12:00, with 77% of flights taking off in the afternoon.

The number of flights available between Colombo and London Heathrow Airport is 18 per week as of March 2026. The most frequent departure day is Sat, with 22% of weekly flights leaving on this day.