Are there nonstop flights from London (LGW) to Sydney (SYD)?

No. The fastest connection is via Chengdu, about 21h 2m of total flying time.

What is the fastest connection from London (LGW) to Sydney (SYD)?

via Chengdu ≈ 21h 2m, via Guangzhou ≈ 21h 2m, via Zhengzhou ≈ 21h 5m (estimated flying time, excluding layovers).

from 40,000 ANA miles, from 50,000 JAL miles (economy, one way, based on the published award charts).

London Gatwick Airport (LGW) to Sydney Kingsford Smith International Airport (SYD)・17,021 km

No nonstop flights. The fastest connection is via Chengdu (TFU), about 21h 2m of flying time (layover not included).

With milesANA 40,000 miles+ (via PEK)JAL 50,000 miles+ (via PVG)Economy, one way, estimate. Tap a connection for miles by cabin.

None.

18 one-stop options, sorted by estimated flying time. Tap one to see the airlines on each leg and booking links.

Times are estimated from distance. Check schedules, frequency and availability with the airline or a booking site.