Cheap flights from Sri Lanka to London from £268

In general, October is the cheapest month to fly from Sri Lanka to London Heathrow Airport. Due to it being the ‘off-season’ during this time, you can expect flight prices to be around £624. The month of November is another great option to travel to London Heathrow Airport, with average flight prices from Sri Lanka averaging around £657.

On average, the least expensive day to fly to London Heathrow Airport from Sri Lanka is on a Wednesday. momondo users have found tickets for Wednesday departures for as low as £878. However, this price may fluctuate depending on the airline, the season, and holidays. Be sure to avoid booking your departure on a Friday as prices are generally higher than usual. According to our data, the average ticket price to London Heathrow Airport on Friday is £1,023.

According to our data, the cheapest time of day to fly to London Heathrow Airport is in the morning. momondo users have found flights departing from Sri Lanka to London Heathrow Airport in the morning for as low as £782. Keep in mind that these prices may fluctuate based on what airline you choose and the time of year you plan to travel. If you have a flexible travel schedule, then try to avoid flying at midday when prices are £913 on average. Flights to London Heathrow Airport from Sri Lanka at midday are generally more expensive because this time of day is more convenient for travellers’ schedules.

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

You are more likely to see cheaper flights to London Heathrow Airport from Sri Lanka when booking weeks ahead of your departure date. In general, you can expect to find flights to London Heathrow Airport for around £728 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 Sri Lanka for as low as £606 on momondo.

There are 3 cabin classes available to choose from on Sri Lanka to London Heathrow flights. Cabin price and availability will vary by airline so perform a search above to find the right deals for you.

Qatar Airways is the most popular carrier operating from Sri Lanka to London Heathrow

SriLankan Airlines, Etihad Airways and Qatar Airways are the top three most popular airlines that fly to London Heathrow Airport from Sri Lanka according to our data. SriLankan Airlines is the first choice among our users, with 44% of people opting to fly with this airline when travelling to London Heathrow Airport. Keep in mind that there are 7 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 Sri Lanka and London have experienced a delay on any given week. The average delay length over the past 12 months has been 108 minutes.

Generally, flights departing in the morning tend to experience fewer delays. Flights departing in the early afternoon 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. Friday 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 Sri Lanka to London Heathrow Airport. The most common time of day flights depart is 12:00, with 77% of flights taking off in the afternoon.

As of March 2026, 18 flights take off from Sri Lanka and land in London Heathrow Airport each week. The most common flight departure day for this route is Sat, with 22% of weekly flights taking off on this day.