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

Return flights

07 May - 14 May	SWISS
07 May - 21 May	SWISS
07 May - 19 May	SWISS
05 May - 12 May	SWISS
07 May - 26 May	SWISS
01 May - 12 May	SWISS
01 May - 17 May	SWISS
14 May - 17 May	SWISS
15 May - 24 May	SWISS
05 May - 10 May	SWISS
14 May - 07 Jun	SWISS
13 May - 29 Jun	SWISS
26 May - 30 Jun	SWISS
07 May - 08 Jun	SWISS
28 May - 03 Jun	SWISS
29 May - 03 Jun	SWISS
19 May - 02 Jun	SWISS
18 May - 15 Jun	SWISS
20 May - 16 Jun	SWISS
20 May - 17 Jun	SWISS

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 534€

Return flights