Cheapest return flights from Sydney to London in December from $1439

Best time to book flights for Sydney (SYD) to London (LGW) flights at AirHint

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

Return flights

01 Dec - 29 Dec Singapore Airlines
02 Dec - 05 Jan Singapore Airlines
01 Dec - 27 Dec Singapore Airlines
04 Dec - 30 Dec Singapore Airlines
26 Dec - 29 Dec Qantas
10 Dec - 12 Jan Qatar Airways
08 Dec - 01 Jan Qatar Airways
07 Dec - 01 Jan Qatar Airways
07 Dec - 05 Jan Qatar Airways
26 Dec - 09 Jan Singapore Airlines
25 Dec - 09 Jan Singapore Airlines
23 Dec - 02 Jan Singapore Airlines
16 Dec - 31 Dec Singapore Airlines
09 Dec - 01 Jan Singapore Airlines
23 Dec - 05 Jan Singapore Airlines
27 Dec - 30 Dec Emirates
11 Dec - 23 Dec Singapore Airlines
18 Dec - 25 Dec Singapore Airlines
11 Dec - 27 Dec Singapore Airlines
15 Dec - 30 Dec Singapore Airlines

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

Skyscanner

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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