Cheap flights from Sri Lanka to London from £268

The cheapest month to fly to London from Sri Lanka is in October. Flight prices, which tend to average around £611, are often lower during this time because this is during the off-season. The month of February is another great option to travel to London, with average flight prices from Sri Lanka averaging around £647.

Our data shows that Wednesday is the least expensive day to fly to London. Tickets to fly out on this day can be as low as £878. When flying out on a Friday, the most expensive travel day of the week, you can expect to see flight prices from Sri Lanka to London for around £1,023.

The cheapest time of day to fly to London is in the morning when flights can be purchased for as low as £782. Flights at midday are often more expensive, with an average ticket price of £913.

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

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

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

Qatar Airways, British Airways, and China Eastern are the most popular carriers operating from Sri Lanka to London

SriLankan Airlines, Etihad Airways and Qatar Airways are the top three most popular airlines that fly to London from Sri Lanka according to our data. SriLankan Airlines is the first choice among our users, with 42% of people opting to fly with this airline when travelling to London. Keep in mind that there are 7 different airlines that fly to London 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. 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 each week. The most common flight departure day for this route is Sat, with 22% of weekly flights taking off on this day.