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

Return flights

05 May - 13 May	Wizz Air UK
05 May - 20 May	Wizz Air UK
04 May - 24 May	Air China
03 May - 10 May	Air China
08 May - 20 May	Air China
11 May - 24 May	Air China
21 May - 28 May	Air China
05 May - 12 May	Air China
07 May - 20 May	Air China
07 May - 14 May	Air China
20 May - 02 Jun	Air China
29 May - 06 Jun	Air China
23 May - 06 Jun	Air China
05 May - 11 Jun	Wizz Air UK
05 May - 09 Jun	Air China
29 May - 07 Jun	Air China
27 May - 17 Jun	Air China
31 May - 11 Jun	Air China
14 May - 14 Jun	Air China
20 May - 02 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 489€

Return flights