Cheap flights from London Heathrow Airport to Sri Lanka from £326

The month of September is, on average, the cheapest month to fly to Sri Lanka from London Heathrow Airport, with most prices found around £596. If you aren’t able to travel to Sri Lanka during the month of September, then flying in November is also cheap. Prices for this month can be found on momondo for an average of £610.

Our data shows that Monday is the least expensive day to fly to Sri Lanka. Tickets to fly out on this day can be as low as £703. 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 Sri Lanka on Friday is £794.

Our most recent data shows that the best time of day to fly to Sri Lanka is in the evening. Flights from London Heathrow Airport to Sri Lanka during this time can be as low as £738. If you have a flexible travel schedule, then try to avoid flying in the morning when prices are £770 on average. Flights to Sri Lanka from London Heathrow Airport in the morning are generally more expensive because this time of day is more convenient for travellers’ schedules.

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

You are more likely to see cheaper flights to Sri Lanka from London Heathrow Airport when booking weeks ahead of your departure date. In general, you can expect to find flights to Sri Lanka for around £725 when searching weeks before you fly. However, flight prices might be lower outside of this timeframe. For example, people recently found flights to Sri Lanka from London Heathrow Airport for as low as £641 on momondo.

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

Air India, British Airways, and Gulf Air are the most popular carriers operating from London Heathrow to Sri Lanka

SriLankan Airlines, Qatar Airways and Etihad Airways are the top three most popular airlines that fly to Sri Lanka from London Heathrow Airport according to our data. SriLankan Airlines is the first choice among our users, with 38% of people opting to fly with this airline when travelling to Sri Lanka. Keep in mind that there are 16 different airlines that fly to Sri Lanka on a routine basis, so you have a few additional options to choose from.

Historically, on average around 51% of flights between London and Sri Lanka have experienced a delay on any given week. The average delay length over the past 12 months has been 95 minutes.

Generally, flights departing at night tend to experience fewer delays. Flights departing in the evening 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 51% of their flights experiencing any sort of delay.

The number of flights available between London Heathrow Airport and Sri Lanka is 2 per day as of March 2026. The most frequent departure time is 20:00, with 77% of daily flights leaving in the evening.

As of March 2026, 14 flights take off from London Heathrow Airport and land in Sri Lanka each week. The most common flight departure day for this route is Mon, with 14% of weekly flights taking off on this day.