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

Return flights

22 Apr - 22 May	China Eastern
25 Apr - 06 May	China Eastern
27 Apr - 12 May	China Eastern
25 Apr - 13 May	China Eastern
30 Apr - 07 May	China Eastern
20 Apr - 13 May	China Eastern
26 Apr - 12 May	Scoot
27 Apr - 07 May	China Eastern
23 Apr - 08 May	China Eastern
22 Apr - 12 May	China Eastern
06 Apr - 23 Apr	Scoot
08 Apr - 25 Apr	AirAsia X
16 Apr - 29 Apr	China Airlines
08 Apr - 27 Apr	AirAsia X
06 Apr - 21 Apr	Air India
16 Apr - 23 Apr	Turkish Airlines
13 Apr - 30 Apr	Vietnam Airlines
03 Apr - 08 Apr	Turkish Airlines
01 Apr - 30 Apr	Turkish Airlines
13 Apr - 20 Apr	China Airlines

Also check the deals for one-way flights from Sydney to London 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 Sydney to London in April from 780€

Return flights