Cheap flights from London to Bangkok from £279

The month of May is, on average, the cheapest month to fly to Bangkok from London, with most prices found around £554. The month of September is another great option to travel to Bangkok, with average flight prices from London averaging around £561.

According to our data, Wednesday is the cheapest day to fly to Bangkok from London. The lowest ticket price found for a Wednesday departure recently was £709. Keep in mind that prices can always vary depending on your route and whether or not you are flying domestic or international. Be sure to avoid booking your departure on a Saturday as prices are generally higher than usual. According to our data, the average ticket price to Bangkok on Saturday is £775.

In the afternoon is the cheapest time of day to fly from London to Bangkok when you can find flight prices for as low as £586. Flying to Bangkok in the afternoon is an ideal time because this is during off-peak travel hours. Try not to purchase tickets in the morning because they tend to be around £810. Of course, these prices can vary depending on the time of year and what airport you fly to.

Fly from London Gatwick to Bangkok Suvarnabhumi for the best London - Bangkok flight prices

You are more likely to see cheaper flights to Bangkok from London when booking weeks ahead of your departure date. In general, you can expect to find flights to Bangkok for around £686 when searching weeks before you fly. However, flight prices might be lower outside of this timeframe. For example, people recently found flights to Bangkok from London for as low as £645 on momondo.

China Eastern, KLM, and Turkish Airlines are the most popular carriers operating from London to Bangkok

EVA Air, Thai Airways and Etihad Airways are the top three most popular airlines that fly to Bangkok from London according to our data. EVA Air is the first choice among our users, with 38% of people opting to fly with this airline when travelling to Bangkok. Keep in mind that there are 39 different airlines that fly to Bangkok on a routine basis, so you have a few additional options to choose from.

Historically, on average around 15% of flights between London and Bangkok have experienced a delay on any given week. The average delay length over the past 12 months has been 94 minutes.

Generally, flights departing in the morning 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, EVA Air have had the fewest delays on this route over the last 12 months, with about 7% of their flights experiencing any sort of delay.

9 flights are operational daily from London to Bangkok as of May 2026. The most popular departure time for this route is 21:00, with 78% of flights per day taking off in the evening.

As of May 2026, 69 flights take off from London and land in Bangkok each week. The most common flight departure day for this route is Tue, with 16% of weekly flights taking off on this day.