How long is a flight from London to Australia?

Flights:

London (LON) to Sydney (SYD)

Flight Duration 21 hours 35 minutes

or

London (LON) to Melbourne (MEL)

Flight Duration 21 hours 40 minutes

or

London (LON) to Perth Western Australia (PER)

Flight Duration 18 hours 35 minutes

Distances:

The distance between London, England and Sydney, Australia is 10562 miles (16997 km).

The distance between London, England and Melbourne, Australia is 10509 miles (16913 km).

The distance between London, England and Perth, Australia is 8998 miles (14481 km).