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

Return flights

05 May - 14 May	Air China
05 May - 16 May	Air China
03 May - 12 May	Air China
17 May - 24 May	Air China
03 May - 10 May	Air China
03 May - 16 May	Air China
12 May - 17 May	Air China
03 May - 24 May	Air China
05 May - 24 May	Air China
12 May - 26 May	Air China
12 May - 04 Jun	Air China
17 May - 18 Jun	Air China
11 May - 11 Jun	China Southern
05 May - 07 Jun	China Southern
25 May - 08 Jun	China Southern
30 May - 07 Jun	China Southern
02 May - 06 Jun	China Southern
29 May - 05 Jun	China Southern
20 May - 05 Jun	China Southern
02 May - 04 Jun	China Southern

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

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 London to Sydney in May from 596€

Return flights