Cathay Pacific Flights from London to Hong Kong

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

A flight from London (LON) to Hong Kong (HKG) takes an average of 12 hours 45 minutes.

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.

On average, 32 direct flights operate each week between London and Hong Kong. See below the schedules of the main airlines serving this route:
Cathay Pacific: S/M/T/W/T/F/S – CX252 (departure at 12:43) Cathay Pacific: S/M/T/W/T/F/S – CX250 (departure at 18:48) Cathay Pacific: S/M/T/W/T/F/S – CX238 (departure at 17:30)

The cheapest month to book a flight from London to Hong Kong is usually September, when demand is lower.

After crunching the numbers on our October flight calendar, it's currently cheapest to fly from London to Hong Kong on October 30, 2026 with Air China, with prices starting at £334.

Flights to Hong Kong can arrive at: Hong Kong International Airport (HKG). The most common route connects Heathrow Airport and Hong Kong International Airport (LHR–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.