Cathay Pacific Flights from London to Hong Kong

Based on Trip.com data, {{onewayAirlineName}} offers one-way fares as low as {{onewayPrice}} on {{onewayifDirect}} routes (e.g. {{departAirportCode}} to {{arrivalAirportCode}} on {{onewayDate}}), while {{roundtripAirlineName}} offers {{roundtripifDirect}} round-trips from {{roundtripPrice}} departing on {{roundtripDate}} and returning on {{returnDate}}.

At the moment, you can catch a direct flight from London to Hong Kong with the following airlines, including: Cathay Pacific British Airways China Eastern Airlines Aer Lingus Qatar Airways Selected airlines are based on historical data collected from flight bookings users made on Trip.com within the last 90 days.

It takes about 12 hours 44 minutes to fly from London (LON) to Hong Kong (HKG).

By analyzing data from all airlines on the Trip.com flight calendar, it looks like the best time to book a flight from London to Hong Kong is around 40 days (6 weeks) in advance, and the best time to fly is usually on Tuesday, Wednesday, and Saturday. Tuesday typically offers the cheapest flights for departure, while Saturday offers the best return deals.

Based on Trip.com data in the past 4 weeks, there is 30 flight per week flying from London to Hong Kong. You can check the weekly schedule for popular airlines on this route below: Cathay Pacific: S/M/T/W/T/F/S -- CX256 (20:44) Cathay Pacific: S/M/T/W/T/F/S -- CX252 (12:45)

To find best deals on flights from London to Hong Kong, you can use various tools on Trip.com:
· Be flexible with your travel dates to get the cheapest flight deal. Now the cheapest flight deal is on {{25a2b5_owDate}}, with one-way flights priced at just {{25a2b5_owPrice}}.
· Compare airlines strategically. Budget carriers often provide the lowest base fares, while we found the most affordable airline currently operating on this route is {{airlineName}}.
· Set up price alerts to easily monitor ticket prices without having to check every day.
· Check Trip.com flight deals and promo codes frequently.
· Avoid peak season unless you book very early. It seems the peak season for Hong Kong travel is around {{peakSeason}}.
· Get exclusive promo codes for Trip.com app users.

The cheapest months to fly from London to Hong Kong is May, when demand for travel is lower.

After crunching the numbers on our September flight calendar, it's currently cheapest to fly from London to Hong Kong on September 13, 2025 with Air China, with prices starting at THB 14,224.

You can land at any one of the following hubs in Hong Kong, with Heathrow Airport to Hong Kong International Airport (LHR-HKG) is by far the most common option on this route: Hong Kong International Airport (HKG).

The time difference between Hong Kong and London is 8h.

Tickets can only be changed or cancelled if permitted by airline policy. To submit a change or cancellation request, go to the flight bookings page, select the option to change or cancel your booking, choose the relevant passengers and segment, and submit a request. Please note that additional charges may apply according to the airline ticket policy. However, if the flight has been rescheduled and you would like to change or cancel your ticket, you can submit an involuntary cancellation request. For more details about change and cancellation policies, please check the customer support pages.