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

Return flights

30 Apr - 14 May	China Eastern
21 Apr - 07 May	Air China
28 Apr - 07 May	VietJet Air
21 Apr - 25 Apr	Scoot
21 Apr - 26 May	Air China
15 Apr - 07 May	AirAsia X
22 Apr - 07 May	AirAsia X
21 Apr - 28 Apr	VietJet Air
23 Apr - 07 May	Scoot
25 Apr - 12 May	Scoot
23 Apr - 12 May	Scoot
01 Apr - 07 Apr	Turkish Airlines
21 Apr - 28 May	Scoot
08 Apr - 23 Apr	AirAsia X
16 Apr - 23 Apr	Scoot
16 Apr - 21 Apr	Scoot
15 Apr - 22 Apr	Turkish Airlines
05 Apr - 19 Apr	Turkish Airlines
03 Apr - 26 Apr	Turkish Airlines
01 Apr - 08 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.

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Cheapest return flights from Sydney to London in April from $906

Return flights