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

Return flights

20 Aug - 27 Aug	Finnair
28 Aug - 04 Sep	Finnair
12 Aug - 17 Aug	Finnair
25 Aug - 12 Sep	Finnair
18 Aug - 25 Aug	Finnair
07 Aug - 14 Aug	Air India
10 Aug - 11 Aug	Air India
18 Aug - 23 Aug	Finnair
07 Aug - 15 Aug	Air India
17 Aug - 24 Aug	Finnair
29 Aug - 06 Sep	Finnair
17 Aug - 30 Aug	Finnair
14 Aug - 22 Aug	Finnair
28 Aug - 04 Sep	Qantas	direct
29 Aug - 06 Sep	Qantas	direct
28 Aug - 14 Sep	Lufthansa
25 Aug - 12 Sep	Singapore Airlines	direct
26 Aug - 04 Sep	Emirates
16 Aug - 13 Sep	China Southern
25 Aug - 29 Sep	China Southern

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

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 August from 658€

Return flights