AirHint found the following cheapest return flights from Sydney (SYD) to London (LHR) in December 2026 (see full year).

Return flights

03 Dec - 07 Dec	Turkish Airlines
01 Dec - 21 Dec	China Airlines
01 Dec - 14 Dec	China Airlines
07 Dec - 26 Dec	Vietnam Airlines
07 Dec - 27 Dec	Vietnam Airlines
04 Dec - 21 Dec	China Airlines
01 Dec - 09 Dec	China Airlines
06 Dec - 21 Dec	China Airlines
01 Dec - 28 Dec	Turkish Airlines
06 Dec - 11 Dec	China Airlines
04 Dec - 01 Jan	China Airlines
01 Dec - 02 Jan	China Airlines
01 Dec - 03 Jan	Asiana Airlines
14 Dec - 05 Jan	Air China
25 Dec - 01 Jan	SriLankan Airlines
25 Dec - 04 Jan	Air China
07 Dec - 04 Jan	Asiana Airlines
10 Dec - 01 Jan	Asiana Airlines
10 Dec - 04 Jan	Asiana Airlines
05 Dec - 02 Jan	Asiana Airlines

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

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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Cheapest return flights from Sydney to London in December from $1162

Return flights