Cheapest return flights from London to Sydney in December from 629€

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

Return flights

01 Dec - 23 Jan China Southern
01 Dec - 31 Jan China Southern
04 Dec - 17 Jan China Southern
02 Dec - 18 Jan China Southern
01 Dec - 12 Jan China Southern
01 Dec - 14 Jan China Southern
03 Dec - 13 Jan China Southern
02 Dec - 15 Jan China Southern
31 Dec - 28 Jan China Southern
04 Dec - 25 Dec China Southern
04 Dec - 15 Jan China Southern
01 Dec - 29 Dec China Southern
01 Dec - 15 Dec China Southern
03 Dec - 10 Dec China Southern
03 Dec - 17 Dec China Southern
02 Dec - 15 Dec China Southern
01 Dec - 14 Dec China Southern
01 Dec - 10 Dec China Southern
02 Dec - 14 Dec China Southern
02 Dec - 16 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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