Cheap flights from London Heathrow Airport to Singapore from £304

The cheapest month to fly to Singapore from London Heathrow Airport is in May. Flight prices, which tend to average around £546, are often lower during this time because this is during the off-season. If you are unable to visit Singapore during the month of May, then departing from London Heathrow Airport during the month September is also very affordable. Most momondo users find prices during this month for around £562.

Our data shows that Tuesday is the least expensive day to fly to Singapore. Tickets to fly out on this day can be as low as £879. When flying out on a Saturday, the most expensive travel day of the week, you can expect to see flight prices from London Heathrow Airport to Singapore for around £953.

The cheapest time of day to fly to Singapore is in the afternoon when flights can be purchased for as low as £824. In contrast, the most expensive time of day to depart to Singapore is in the evening when prices are around £943.

Fly from London Heathrow to Singapore Changi for the best London Heathrow - Singapore flight prices

You are more likely to see cheaper flights to Singapore from London Heathrow Airport when booking weeks ahead of your departure date. In general, you can expect to find flights to Singapore for around £658 when searching weeks before you fly. However, flight prices might be lower outside of this timeframe. For example, people recently found flights to Singapore from London Heathrow Airport for as low as £578 on momondo.

There are 4 cabin classes available to choose from on London Heathrow to Singapore flights. Cabin price and availability will vary by airline so perform a search above to find the right deals for you.

Hainan Airlines is the most popular carrier operating from London Heathrow to Singapore

Singapore Airlines, British Airways and Gulf Air are the top three most popular airlines that fly to Singapore from London Heathrow Airport according to our data. Singapore Airlines is the first choice among our users, with 59% of people opting to fly with this airline when travelling to Singapore. Keep in mind that there are 23 different airlines that fly to Singapore on a routine basis, so you have a few additional options to choose from.

Historically, on average around 24% of flights between London and Singapore have experienced a delay on any given week. The average delay length over the past 12 months has been 106 minutes.

Generally, flights departing in the evening tend to experience fewer delays. Flights departing in the early afternoon have, in the past, seen delays more frequently in comparison.

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

According to our data, Qantas Airways have had the fewest delays on this route over the last 12 months, with about 15% of their flights experiencing any sort of delay.

As of March 2026, 34 flights take off from London Heathrow Airport and land in Singapore each day. The most common flight departure time for this route is 21:00, with 67% of daily flights taking off in the evening.

239 flights are operational weekly from London Heathrow Airport to Singapore as of March 2026. The most popular departure day for this route is Mon, with 15% of flights per week taking off on this day.