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

Return flights

02 Apr - 09 Apr	Hainan Airlines
02 Apr - 14 Apr	Hainan Airlines
06 Apr - 17 May	China Eastern
19 Apr - 05 May	Scoot
29 Apr - 11 May	China Eastern
24 Apr - 15 May	Scoot
16 Apr - 13 May	Hainan Airlines
23 Apr - 10 May	Hainan Airlines
16 Apr - 15 May	Hainan Airlines
16 Apr - 14 May	Hainan Airlines
16 Apr - 28 Apr	Hainan Airlines
20 Apr - 28 Apr	Scoot
22 Apr - 03 May	AirAsia X
21 Apr - 14 May	Scoot
02 Apr - 22 Apr	Hainan Airlines
18 Apr - 30 Apr	Scoot
21 Apr - 28 Apr	Air China
05 Apr - 18 Apr	Jetstar
17 Apr - 30 Apr	Scoot
07 Apr - 21 Apr	Hainan 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 $889

Return flights