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

Return flights

21 Apr - 26 Apr	Aegean Airlines
21 Apr - 27 Apr	Aegean Airlines
23 Apr - 27 Apr	Aegean Airlines
17 Apr - 21 Apr	Hainan Airlines
23 Apr - 28 Apr	Aegean Airlines
30 Apr - 24 May	SWISS
30 Apr - 05 May	Aegean Airlines
16 Apr - 20 Apr	Gulf Air
14 Apr - 20 Apr	Gulf Air
16 Apr - 21 Apr	Gulf Air
19 Apr - 23 Apr	Gulf Air
26 Apr - 30 Apr	Gulf Air
28 Apr - 04 May	Gulf Air
30 Apr - 06 May	Gulf Air
19 Apr - 10 May	Lufthansa
28 Apr - 03 May	Air India
23 Apr - 16 May	Air China
23 Apr - 10 May	Lufthansa
26 Apr - 01 May	Gulf Air
28 Apr - 02 May	Gulf Air

Also check the deals for one-way flights from London to Singapore in April.

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 April from $560

Return flights