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

Return flights

03 May - 22 May	Air India
14 May - 25 May	Air China
04 May - 10 May	Air China
05 May - 10 May	Air China
05 May - 16 May	Air China
05 May - 17 May	Air China
02 May - 09 May	Air China
27 May - 03 Jun	Air China
12 May - 19 May	Air China
20 May - 24 May	Air China
05 May - 14 May	Air China
20 May - 08 Jun	Lufthansa
25 May - 02 Jun	Air China
18 May - 02 Jun	Lufthansa
19 May - 02 Jun	Lufthansa
22 May - 01 Jun	SWISS
30 May - 11 Jun	Air France
20 May - 07 Jun	Lufthansa
28 May - 04 Jun	Finnair
30 May - 14 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 $484

Return flights