Cheap flights from Hong Kong to London from $353

The month of March is, on average, the cheapest month to fly to London Heathrow Airport from Hong Kong, with most prices found around $1,096. If you aren’t able to travel during the month of March, then book flights to London Heathrow Airport from Hong Kong during October instead. Flights to London Heathrow Airport in October, while not as cheap as those in March, still average around $1,104.

Our data shows that Monday is the least expensive day to fly to London Heathrow Airport. Tickets to fly out on this day can be as low as $1,161. When flying out on a Wednesday, the most expensive travel day of the week, you can expect to see flight prices from Hong Kong to London Heathrow Airport for around $1,355.

At midday is the cheapest time of day to fly from Hong Kong to London Heathrow Airport when you can find flight prices for as low as $1,191. Flying to London Heathrow Airport at midday 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 evening when prices are around $1,318.

Fly from Hong Kong Intl to London Heathrow for the best Hong Kong Intl - London Heathrow flight prices

You are more likely to see cheaper flights to London Heathrow Airport from Hong Kong when booking weeks ahead of your departure date. In general, you can expect to find flights to London Heathrow Airport for around $1,236 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 Hong Kong for as low as $1,221 on momondo.

There are 3 cabin classes available to choose from on Hong Kong Intl to London Heathrow 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 22% on your flight if you consider stops on a Hong Kong to London Heathrow Airport flight.

As of February 2026, prices for Hong Kong to London Heathrow Airport flights are approximately 20% cheaper when compared to flights at the same time last year.

China Eastern is the most popular carrier operating from Hong Kong Intl to London Heathrow

British Airways, SWISS and Cathay Pacific are the top three most popular airlines that fly to London Heathrow Airport from Hong Kong according to our data. British Airways is the first choice among our users, with 38% of people opting to fly with this airline when travelling to London Heathrow Airport. Keep in mind that there are 3 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 19% of flights between Hong Kong and London have experienced a delay on any given week. The average delay length over the past 12 months has been 136 minutes.

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

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

According to our data, British Airways have had the fewest delays on this route over the last 12 months, with about 7% of their flights experiencing any sort of delay.

Zurich (ZRH) was the most common stop: 73% of momondo users choosing one-stop flights on this route connected there.

Flights via Abu Dhabi (AUH) offer the lowest average return price of $1,043.

Flights connecting via Zurich (ZRH) have the shortest average one-way travel time: 16h 32m.

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

As of February 2026, there are 6 flights per day flying from Hong Kong to London Heathrow Airport. The most common time of day flights depart is 23:00, with 55% of flights taking off in the evening.

As of February 2026, 42 flights take off from Hong Kong and land in London Heathrow Airport each week. The most common flight departure day for this route is Tue, with 17% of weekly flights taking off on this day.