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

Return flights

23 Apr - 19 May	China Eastern
23 Apr - 11 May	China Eastern
30 Apr - 26 May	China Eastern
22 Apr - 17 May	Scoot
22 Apr - 14 May	China Eastern
27 Apr - 11 May	China Airlines
27 Apr - 13 May	China Airlines
25 Apr - 16 May	Etihad Airways
22 Apr - 13 May	Etihad Airways
28 Apr - 05 May	Air China
19 Apr - 24 Apr	China Airlines
20 Apr - 27 Apr	China Airlines
23 Apr - 30 Apr	Etihad Airways
26 Apr - 30 Apr	Etihad Airways
22 Apr - 29 Apr	Etihad Airways
06 Apr - 23 Apr	Scoot
13 Apr - 27 Apr	Etihad Airways
06 Apr - 27 Apr	Etihad Airways
06 Apr - 13 Apr	Etihad Airways
08 Apr - 19 Apr	Turkish 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.

Book a cheap hotel in London

Cheap car rent in London

Cheapest return flights from Sydney to London in April from $869

Return flights