Cheap flights from Southeast Asia to London from £172

In general, February is the cheapest month to fly from Southeast Asia to London Heathrow Airport. Due to it being the ‘off-season’ during this time, you can expect flight prices to be around £633. The month of November is another great option to travel to London Heathrow Airport, with average flight prices from Southeast Asia averaging around £689.

On average, the least expensive day to fly to London Heathrow Airport from Southeast Asia is on a Thursday. momondo users have found tickets for Thursday departures for as low as £814. However, this price may fluctuate depending on the airline, the season, and holidays. Be sure to avoid booking your departure on a Tuesday as prices are generally higher than usual. According to our data, the average ticket price to London Heathrow Airport on Tuesday is £855.

According to our data, the cheapest time of day to fly to London Heathrow Airport is at midday. momondo users have found flights departing from Southeast Asia to London Heathrow Airport at midday for as low as £788. 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 in the evening when prices are £894 on average. Flights to London Heathrow Airport from Southeast Asia in the evening are generally more expensive because this time of day is more convenient for travellers’ schedules.

Fly from Bangkok Suvarnabhumi to London Heathrow for the best Southeast Asia - London Heathrow flight prices

You are more likely to see cheaper flights to London Heathrow Airport from Southeast Asia when booking weeks ahead of your departure date. In general, you can expect to find flights to London Heathrow Airport for around £772 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 Southeast Asia for as low as £703 on momondo.

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

Air India, Etihad Airways, and Gulf Air are the most popular carriers operating from Southeast Asia to London Heathrow

Emirates, Etihad Airways and EVA Air are the top three most popular airlines that fly to London Heathrow Airport from Southeast Asia according to our data. Emirates is the first choice among our users, with 28% of people opting to fly with this airline when travelling to London Heathrow Airport. Keep in mind that there are 22 different airlines that fly to London Heathrow Airport on a routine basis, so you have a few additional options to choose from.

The number of flights available between Southeast Asia and London Heathrow Airport is 55 per day as of September 2026. The most frequent departure time is 12:00, with 34% of daily flights leaving in the evening.

387 flights are operational weekly from Southeast Asia to London Heathrow Airport as of September 2026. The most popular departure day for this route is Fri, with 15% of flights per week taking off on this day.