Cheap flights from Bangkok Suvarnabhumi Airport to London from $398

The month of February is, on average, the cheapest month to fly to London Heathrow Airport from Bangkok Suvarnabhumi Airport, with most prices found around $1,273. If you aren’t able to travel during the month of February, then book flights to London Heathrow Airport from Bangkok Suvarnabhumi Airport during April instead. Flights to London Heathrow Airport in April, while not as cheap as those in February, still average around $1,447.

Our data shows that Wednesday is the least expensive day to fly to London Heathrow Airport. Tickets to fly out on this day can be as low as $1,629. When flying out on a Monday, 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 $1,763.

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 $1,508. 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 $1,638.

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 $1,508 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 $1,266 on momondo.

There are 3 cabin classes available to choose from on Bangkok Suvarnabhumi Airport 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.

You could potentially save up to 48% on your flight if you consider stops on a Bangkok Suvarnabhumi Airport to London Heathrow Airport flight.

As of October 2026, prices for Bangkok Suvarnabhumi Airport to London Heathrow Airport flights are approximately 25% cheaper when compared to flights at the same time last year.

Historically, on average around 11% 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 97 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.

Friday 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 10% of their flights experiencing any sort of delay.

Abu Dhabi (AUH) was the most common stop: 40% of momondo users choosing one-stop flights on this route connected there.

Flights via Dubai (DXB) offer the lowest average return price of $1,428.

Flights connecting via Dubai (DXB) have the shortest average one-way travel time: 15h 45m.

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

As of October 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 58% of daily flights taking off in the afternoon.

As of October 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.