Cheap flights from Hong Kong to London from $347

The cheapest month to fly to London from Hong Kong is in November. Flight prices, which tend to average around $838, are often lower during this time because this is during the off-season. The month of January is another great option to travel to London, with average flight prices from Hong Kong averaging around $843.

The cheapest day to depart from Hong Kong to London is on a Sunday. Travelers who choose to depart for London on a Sunday will often find tickets for as low as $1,002. If your travel schedule is flexible, try to avoid departing on a Wednesday because tickets tend to average around $1,157. These prices are subject to change though, so be sure to set up a Price Alert for flights to London.

Flying to London from Hong Kong in the evening is the least expensive time of day to depart. momondo users have found prices as low as $1,086 when looking at flights departing in the evening. Flights to London are more costly at noon, with an average ticket price of $1,110. Departure times at noon fall within the peak daily travel times, which is why tickets can be more expensive.

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

You are more likely to see cheaper flights to London from Hong Kong when booking weeks ahead of your departure date. In general, you can expect to find flights to London for around $950 when searching weeks out. However, flight prices might be lower outside of this timeframe. For example, people recently found flights to London from Hong Kong for as low as $870 on momondo.

There are 3 cabin classes available to choose from on Hong Kong to London 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 14% on your flight if you consider stops on a Hong Kong to London flight.

As of October 2026, prices for Hong Kong to London flights are approximately 9% cheaper when compared to flights at the same time last year.

Air China, XiamenAir, and SWISS are the most popular carriers operating from Hong Kong Intl to London

Cathay Pacific, British Airways and SWISS are the top three most popular airlines that fly to London 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. Keep in mind that there are 6 different airlines that fly to London on a routine basis, so you have a few additional options to choose from.

Historically, on average around 23% 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 110 minutes.

Generally, flights departing in the evening 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 9% of their flights experiencing any sort of delay.

Shanghai (PVG) was the most common stop: 25% of momondo users choosing 1-stop flights on this route connected there.

Flights via Shanghai (PVG) offer the lowest average round-trip price of $789.

Flights connecting via Zurich (ZRH) have the shortest average one-way travel time: 15h 58m.

Zurich (ZRH) has the shortest average layover time for this route: 1h 06m.

As of October 2026, there are 6 flights per day flying from Hong Kong to London. The most common time of day flights depart is 10:00PM, with 62% of flights taking off in the evening.

The number of flights available between Hong Kong and London is 46 per week as of October 2026. The most frequent departure day is Tue, with 15% of weekly flights leaving on this day.