Cheapest return flights from London to Sydney in December from 560€

AirHint found the following cheapest return flights from London (LHR) to Sydney (SYD) in December 2025 (see full year).

Return flights

01 Dec - 29 Jan Air China
04 Dec - 26 Jan China Southern
05 Dec - 22 Jan Air China
01 Dec - 18 Jan Air China
01 Dec - 14 Jan Air China
05 Dec - 25 Jan Air China
04 Dec - 25 Jan Air China
05 Dec - 30 Jan Air China
02 Dec - 24 Dec Air China
02 Dec - 31 Jan China Southern
01 Dec - 20 Jan Air China
03 Dec - 24 Dec Air China
05 Dec - 24 Dec Air China
07 Dec - 24 Dec Air China
01 Dec - 08 Dec China Southern
04 Dec - 06 Dec Air India
08 Dec - 24 Dec Air China
05 Dec - 07 Dec Air India
04 Dec - 08 Dec China Southern
03 Dec - 07 Dec China Southern

Also check the deals for one-way flights from London to Sydney in December.

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The deals are updated regularly. The prices may go up as tickets are purchased by other travellers. Only the cheapest flights are offered. Select a price to book and secure these cheap prices.

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