Cheap flights from Bangkok to London from £255

In general, February is the cheapest month to fly from Bangkok to London Heathrow Airport. Due to it being the ‘off-season’ during this time, you can expect flight prices to be around £174. The month of December is another great option to travel to London Heathrow Airport, with average flight prices from Bangkok averaging around £195.

On average, the least expensive day to fly to London Heathrow Airport from Bangkok is on a Monday. momondo users have found tickets for Monday departures for as low as £777. 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 £844.

According to our data, the cheapest time of day to fly to London Heathrow Airport is in the morning. momondo users have found flights departing from Bangkok to London Heathrow Airport in the morning for as low as £797. 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 £921 on average. Flights to London Heathrow Airport from Bangkok 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 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 £774 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 Bangkok for as low as £708 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.

Oman Air, China Eastern, and Emirates are the most popular carriers operating from Bangkok to London Heathrow

EVA Air, Thai Airways and Etihad Airways 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 63% of people opting to fly with this airline when travelling to London Heathrow Airport. Keep in mind that there are 11 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 12% 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 departing in the early afternoon have, in the past, seen delays more frequently in comparison.

Sunday 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, Thai Airways have had the fewest delays on this route over the last 12 months, with about 12% 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 12:00, with 57% of flights per day taking off in the afternoon.

As of June 2026, 49 flights take off from Bangkok and land in London Heathrow Airport each week. The most common flight departure day for this route is Mon, with 14% of weekly flights taking off on this day.