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

Return flights

14 Jul - 31 Aug	Air China
15 Jul - 15 Aug	China Eastern
26 Jul - 14 Aug	China Eastern
15 Jul - 28 Aug	Air China
30 Jul - 22 Aug	Air China
14 Jul - 24 Aug	Air China
29 Jul - 14 Aug	China Eastern
22 Jul - 10 Aug	China Eastern
28 Jul - 22 Aug	Air China
31 Jul - 31 Aug	Air China
15 Jul - 20 Jul	Scoot Tigerair
15 Jul - 19 Jul	Scoot Tigerair
23 Jul - 27 Jul	Air China
16 Jul - 27 Jul	Air China
24 Jul - 31 Jul	China Eastern
08 Jul - 29 Jul	China Eastern
21 Jul - 28 Jul	Air China
14 Jul - 31 Jul	China Eastern
15 Jul - 22 Jul	Air China
14 Jul - 28 Jul	Air China

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

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 July from $878

Return flights