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

Return flights

14 May - 21 May	Ryanair
12 May - 26 May	Lufthansa
04 May - 11 May	Lufthansa
05 May - 19 May	Lufthansa
18 May - 08 Jun	Lufthansa
06 May - 11 May	Lufthansa
11 May - 16 May	Lufthansa
02 May - 10 May	China Airlines
11 May - 24 May	China Airlines
22 May - 29 May	China Airlines
08 May - 25 May	China Airlines
30 May - 14 Jun	China Airlines
29 May - 19 Jun	China Airlines
15 May - 05 Jun	China Airlines
22 May - 19 Jun	China Airlines
29 May - 05 Jun	China Airlines
19 May - 16 Jun	Malaysia Airlines
06 May - 10 Jun	Malaysia Airlines
21 May - 18 Jun	Malaysia Airlines
11 May - 08 Jun	China Southern

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 $957

Return flights