Cheap flights from Bangkok Suvarnabhumi Airport to London from $517

The month of November is, on average, the cheapest month to fly to London Heathrow Airport from Bangkok Suvarnabhumi Airport, with most prices found around $1,256. If you aren’t able to travel during the month of November, then book flights to London Heathrow Airport from Bangkok Suvarnabhumi Airport during February instead. Flights to London Heathrow Airport in February, while not as cheap as those in November, still average around $1,335.

Our data shows that Tuesday is the least expensive day to fly to London Heathrow Airport. Tickets to fly out on this day can be as low as $1,472. When flying out on a Sunday, the most expensive travel day of the week, you can expect to see flight prices from Bangkok Suvarnabhumi Airport to London Heathrow Airport for around $1,644.

In the evening is the cheapest time of day to fly from Bangkok Suvarnabhumi Airport to London Heathrow Airport when you can find flight prices for as low as $1,472. Flying to London Heathrow Airport in the evening is an ideal time because this is during off-peak travel hours. In contrast, the most expensive time of day to depart to London Heathrow Airport is in the morning when prices are around $1,542.

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

You are more likely to see cheaper flights to London Heathrow Airport from Bangkok Suvarnabhumi Airport when booking weeks ahead of your departure date. In general, you can expect to find flights to London Heathrow Airport for around $1,413 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 Suvarnabhumi Airport for as low as $1,277 on momondo.

You could potentially save up to 38% on your flight if you consider stops on a Bangkok Suvarnabhumi Airport to London Heathrow Airport flight.

As of May 2026, prices for Bangkok Suvarnabhumi Airport to London Heathrow Airport flights are approximately 15% more expensive when compared to flights at the same time last year.

Historically, on average around 14% 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 14% of their flights experiencing any sort of delay.

Dubai (DXB) was the most common stop: 50% of momondo users choosing one-stop flights on this route connected there.

Flights via Dubai (DXB) offer the lowest average return price of $1,381.

Flights connecting via Dubai (DXB) have the shortest average one-way travel time: 15h 38m.

Dubai (DXB) has the shortest average stopover time for this route: 1h 20m.

As of May 2026, 7 flights take off from Bangkok Suvarnabhumi Airport and land in London Heathrow Airport each day. The most common flight departure time for this route is 12:00, with 57% of daily flights taking off in the afternoon.

As of May 2026, 49 flights take off from Bangkok Suvarnabhumi Airport 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.