Cheap flights from Hong Kong to London from $234

The month of March is, on average, the cheapest month to fly to London Heathrow Airport from Hong Kong, with most prices found around $774. If you’re not able to fly to London Heathrow Airport in March, then October is your next best option. Flight prices from Hong Kong to London Heathrow Airport during October average around $779.

Our data shows that Sunday is the least expensive day to fly to London Heathrow Airport. Tickets to fly out on this day can be as low as $891. The most expensive day to fly to London Heathrow Airport is Thursday, with ticket prices averaging around $1,070.

According to our data, the cheapest time of day to fly to London Heathrow Airport is in the evening. momondo users have found flights departing from Hong Kong to London Heathrow Airport in the evening for as low as $928. Keep in mind that these prices may fluctuate based on what airline you choose and the time of year you plan to travel. Flights at noon are often more expensive with an average ticket price of $1,059.

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 $872 when searching weeks out. 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 $862 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 4% 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

Cathay Pacific, British Airways and Air China are the top three most popular airlines that fly to London Heathrow Airport from Hong Kong according to our data. Cathay Pacific is the first choice among our users, with 47% of people opting to fly with this airline when traveling to London Heathrow Airport. Keep in mind that there are 8 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 in the morning have, in the past, seen delays more frequently in comparison.

Thursday is statistically the day of the week which experiences the fewest number of 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 least number of delays on this route over the last 12 months; with about 7% of their flights experiencing any sort of delay.

Doha (DOH) was the most common stop: 22% of momondo users choosing 1-stop flights on this route connected there.

Flights via Beijing (PKX) offer the lowest average round-trip price of $614.

Flights connecting via Shanghai (PVG) have the shortest average one-way travel time: 15h 55m.

Zurich (ZRH) has the shortest average layover time for this route: 1h 08m.

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 11:00PM, 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.