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

Return flights

21 May - 28 May	Etihad Airways
13 May - 28 May	Finnair
01 May - 09 May	Malaysia Airlines
11 May - 18 May	Malaysia Airlines
05 May - 22 May	Finnair
07 May - 11 May	Finnair
26 May - 31 May	Finnair
27 May - 31 May	Finnair
20 May - 27 May	Finnair
04 May - 18 May	Finnair
26 May - 09 Jun	Finnair
28 May - 04 Jun	Finnair
19 May - 05 Jun	Malaysia Airlines
25 May - 08 Jun	Air France
30 May - 06 Jun	Malaysia Airlines
30 May - 11 Jun	Malaysia Airlines
29 May - 10 Jun	Finnair
31 May - 07 Jun	Gulf Air
28 May - 09 Jun	Lufthansa
19 May - 05 Jun	Singapore Airlines	direct

Also check the deals for one-way flights from Singapore to London 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 Singapore to London in May from $591

Return flights