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

Return flights

10 May - 24 May	Lufthansa
09 May - 18 May	Lufthansa
08 May - 11 May	Lufthansa
16 May - 26 May	Lufthansa
09 May - 16 May	Air China
16 May - 23 May	Air China
12 May - 19 May	Air China
14 May - 19 May	Air China
09 May - 23 May	Air China
11 May - 15 May	Air China
25 May - 01 Jun	Air China
21 May - 01 Jun	Air China
25 May - 08 Jun	Air China
12 May - 02 Jun	Air China
21 May - 07 Jun	Air China
31 May - 11 Jun	Gulf Air
20 May - 06 Jun	Gulf Air
16 May - 06 Jun	Gulf Air
25 May - 01 Jun	Singapore Airlines	direct
21 May - 01 Jun	Singapore Airlines	direct

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 503€

Return flights