Cheap flights from Bangkok to London from $338

The month of February is, on average, the cheapest month to fly to London Heathrow Airport from Bangkok, with most prices found around $230. If you’re not able to fly to London Heathrow Airport in February, then December is your next best option. Flight prices from Bangkok to London Heathrow Airport during December average around $258.

Our data shows that Sunday is the least expensive day to fly to London Heathrow Airport. Tickets to fly out on this day can be as low as $1,123. The most expensive day to fly to London Heathrow Airport is Friday, with ticket prices averaging around $1,297.

According to our data, the cheapest time of day to fly to London Heathrow Airport is at noon. momondo users have found flights departing from Bangkok to London Heathrow Airport at noon for as low as $1,149. Keep in mind that these prices may fluctuate based on what airline you choose and the time of year you plan to travel. Flights in the evening are often more expensive with an average ticket price of $1,418.

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

You are more likely to see cheaper flights to London Heathrow Airport from Bangkok when booking weeks ahead of your departure date. In general, you can expect to find flights to London Heathrow Airport for around $1,023 when searching weeks out. However, flight prices might be lower outside of this timeframe. For example, people recently found flights to London Heathrow Airport from Bangkok for as low as $936 on momondo.

There are 4 cabin classes available to choose from on Bangkok 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.

Etihad Airways and China Eastern are the most popular carriers operating from Bangkok to London Heathrow

EVA Air, Thai Airways and Emirates are the top three most popular airlines that fly to London Heathrow Airport from Bangkok according to our data. EVA Air is the first choice among our users, with 53% of people opting to fly with this airline when traveling to London Heathrow Airport. Keep in mind that there are 5 different airlines that fly to London Heathrow Airport on a routine basis, so you have a few additional options to choose from.

Historically, on average around 13% of flights between Bangkok and London have experienced a delay on any given week. The average delay length over the past 12 months has been 91 minutes.

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

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

According to our data, Thai Airways have had the least number of delays on this route over the last 12 months; with about 13% of their flights experiencing any sort of delay.

7 flights are operational daily from Bangkok to London Heathrow Airport as of June 2026. The most popular departure time for this route is 12:00PM, with 57% of flights per day taking off in the afternoon.

49 flights are operational weekly from Bangkok to London Heathrow Airport as of June 2026. The most popular departure day for this route is Mon, with 14% of flights per week taking off on this day.