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

Return flights

05 May - 26 May	Air China
10 May - 19 May	Air China
10 May - 26 May	Air China
03 May - 14 May	Air China
05 May - 12 May	Air China
03 May - 12 May	Air China
03 May - 17 May	Air China
03 May - 10 May	Air China
05 May - 19 May	Air China
01 May - 10 May	Air China
26 May - 11 Jun	Air India
13 May - 03 Jun	Air India
26 May - 08 Jun	Air India
26 May - 09 Jun	Air India
18 May - 01 Jun	Air India
19 May - 02 Jun	Air India
27 May - 01 Jun	Air India
18 May - 08 Jun	Air India
26 May - 16 Jun	Air India
22 May - 02 Jun	Air India

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

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 Sydney

Cheap car rent in Sydney

Cheapest return flights from London to Sydney in May from 625€

Return flights