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

Return flights

11 May - 24 May	Lufthansa
15 May - 18 May	Lufthansa
18 May - 24 May	Lufthansa
04 May - 18 May	Lufthansa
15 May - 24 May	Lufthansa
11 May - 18 May	Lufthansa
08 May - 18 May	Lufthansa
09 May - 18 May	Lufthansa
16 May - 24 May	Lufthansa
16 May - 25 May	Lufthansa
25 May - 04 Jun	Hainan Airlines
22 May - 02 Jun	Hainan Airlines
25 May - 01 Jun	Air India
19 May - 02 Jun	Air India
18 May - 08 Jun	Air India
07 May - 08 Jun	Gulf Air
16 May - 08 Jun	Lufthansa
29 May - 06 Jun	Air India
30 May - 06 Jun	Air India
29 May - 11 Jun	Air India

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 474€

Return flights