AirHint found the following cheapest return flights from London (LCY) to Singapore (SIN) in May 2026 (see full year).

Return flights

19 May - 26 May	SWISS
07 May - 10 May	Lufthansa
05 May - 19 May	SWISS
12 May - 19 May	SWISS
19 May - 27 May	SWISS
19 May - 31 May	SWISS
14 May - 31 May	SWISS
21 May - 07 Jun	Lufthansa
15 May - 01 Jun	SWISS
07 May - 20 May	Lufthansa
21 May - 28 May	Lufthansa
11 May - 01 Jun	Lufthansa
25 May - 08 Jun	Lufthansa
04 May - 18 Jun	Lufthansa
28 May - 11 Jun	Lufthansa
12 May - 21 May	SWISS
31 May - 07 Jun	Lufthansa
31 May - 15 Jun	Lufthansa
19 May - 02 Jun	Lufthansa
25 May - 02 Jun	Lufthansa

Also check the deals for one-way flights from London to Singapore 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.

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Cheapest return flights from London to Singapore in May from 552€

Return flights