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

Return flights

26 Apr - 03 May	Air China
21 Apr - 03 May	Air China
12 Apr - 03 May	Air China
09 Apr - 03 May	Air China
26 Apr - 12 May	Air China
23 Apr - 03 May	Air China
26 Apr - 19 May	Air China
28 Apr - 19 May	Air China
21 Apr - 28 Apr	Air China
26 Apr - 14 May	Air China
21 Apr - 10 May	Air China
21 Apr - 30 Apr	Air China
14 Apr - 22 Apr	Air India
16 Apr - 22 Apr	Air India
08 Apr - 29 Apr	Air India
23 Apr - 30 Apr	Air China
10 Apr - 30 Apr	Air China
09 Apr - 28 Apr	Air China
06 Apr - 27 Apr	Air India
13 Apr - 27 Apr	Air India

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

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 April from 567€

Return flights