Cheap flights from Hong Kong to London from £171

In general, March is the cheapest month to fly from Hong Kong to London Heathrow Airport. Due to it being the ‘off-season’ during this time, you can expect flight prices to be around £572. The month of October is another great option to travel to London Heathrow Airport, with average flight prices from Hong Kong averaging around £576.

On average, the least expensive day to fly to London Heathrow Airport from Hong Kong is on a Monday. momondo users have found tickets for Monday departures for as low as £592. However, this price may fluctuate depending on the airline, the season, and holidays. Be sure to avoid booking your departure on a Friday as prices are generally higher than usual. According to our data, the average ticket price to London Heathrow Airport on Friday is £728.

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 £663. Keep in mind that these prices may fluctuate based on what airline you choose and the time of year you plan to travel. If you have a flexible travel schedule, then try to avoid flying in the morning when prices are £675 on average. Flights to London Heathrow Airport from Hong Kong in the morning are generally more expensive because this time of day is more convenient for travellers’ schedules.

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 £645 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 £637 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 31% 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, EVA Air, and British Airways are the most popular carriers operating from Hong Kong Intl to London Heathrow

Cathay Pacific, British Airways and SWISS 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 58% of people opting to fly with this airline when travelling to London Heathrow Airport. Keep in mind that there are 11 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 20% 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 135 minutes.

Generally, flights departing at night 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 8% of their flights experiencing any sort of delay.

Beijing (PEK) was the most common stop: 23% of momondo users choosing one-stop flights on this route connected there.

Flights via Shanghai (PVG) offer the lowest average return price of £483.

Flights connecting via Zurich (ZRH) have the shortest average one-way travel time: 16h 08m.

Zurich (ZRH) has the shortest average stopover time for this route: 1h 30m.

The number of flights available between Hong Kong and London Heathrow Airport is 6 per day as of February 2026. The most frequent departure time is 23:00, with 57% of daily flights leaving in the evening.

46 flights are operational weekly from Hong Kong to London Heathrow Airport as of February 2026. The most popular departure day for this route is Tue, with 15% of flights per week taking off on this day.