Cheap flights from London Heathrow Airport to Bangkok from C$ 538

In general, May is the cheapest month to fly from London Heathrow Airport to Bangkok Suvarnabhumi Airport. Due to it being the ‘off-season’ during this time, you can expect flight prices to be around C$ 1,110. If you’re not able to fly to Bangkok Suvarnabhumi Airport in May, then September is your next best option. Flight prices from London Heathrow Airport to Bangkok Suvarnabhumi Airport during September average around C$ 1,110.

The cheapest day to depart on your flight to Bangkok Suvarnabhumi Airport is on a Wednesday when prices can be found for as low as C$ 1,073. This is often the case because there is less demand to fly during this day of the week. When flying out on a Friday, the most expensive travel day of the week, you can expect to see flight prices from London Heathrow Airport to Bangkok Suvarnabhumi Airport for around C$ 1,779.

Our data shows that the cheapest London Heathrow Airport to Bangkok Suvarnabhumi Airport flights are usually those with departure times in the afternoon. Our users have found flights to Bangkok Suvarnabhumi Airport in the afternoon for as low as C$ 989. In the morning is when there is more demand to fly to Bangkok Suvarnabhumi Airport, so prices are often more expensive at around C$ 1,844 per ticket.

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

You are more likely to see cheaper flights to Bangkok Suvarnabhumi Airport from London Heathrow Airport when booking weeks ahead of your departure date. In general, you can expect to find flights to Bangkok Suvarnabhumi Airport for around C$ 1,287 when searching weeks out. However, flight prices might be lower outside of this timeframe. For example, people recently found flights to Bangkok Suvarnabhumi Airport from London Heathrow Airport for as low as C$ 1,210 on momondo.

There are 2 cabin classes available to choose from on London Heathrow to Bangkok Suvarnabhumi flights. Cabin price and availability will vary by airline so perform a search above to find the right deals for you.

Historically, on average around 14% 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 89 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 has had the least delays on this route over the last 12 months, with about 8% of their flights experiencing any sort of delay.

As of March 2026, 7 flights take off from London Heathrow Airport and land in Bangkok Suvarnabhumi Airport each day. The most common flight departure time for this route is 9:00p.m., with 71% of daily flights taking off in the evening.

As of March 2026, there are 49 flights per week flying from London Heathrow Airport to Bangkok Suvarnabhumi Airport. The most common day of the week flights depart is Mon, with 14% of flights taking off on this day.