Cheapest return flights from London to Singapore in September from $517

AirHint found the following cheapest return flights from London (LHR) to Singapore (SIN) in September 2025 (see full year).

Return flights

14 Sep - 29 Oct SWISS
15 Sep - 20 Oct Shenzhen Airlines
22 Sep - 28 Sep Shenzhen Airlines
06 Sep - 11 Sep Shenzhen Airlines
06 Sep - 12 Sep Shenzhen Airlines
17 Sep - 05 Oct Hainan Airlines
20 Sep - 30 Sep Shenzhen Airlines
14 Sep - 28 Sep Shenzhen Airlines
29 Sep - 05 Oct Hainan Airlines
21 Sep - 28 Sep Shenzhen Airlines
19 Sep - 11 Oct Shenzhen Airlines
22 Sep - 30 Sep Shenzhen Airlines
19 Sep - 03 Oct Shenzhen Airlines
22 Sep - 01 Oct Shenzhen Airlines
15 Sep - 30 Sep Shenzhen Airlines
17 Sep - 30 Sep Shenzhen Airlines
21 Sep - 30 Sep Shenzhen Airlines
17 Sep - 01 Oct Shenzhen Airlines
17 Sep - 02 Oct Shenzhen Airlines
06 Sep - 02 Oct Shenzhen Airlines

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

Skyscanner

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.

Book a cheap hotel in Singapore

Cheap car rent in Singapore

Feel free to contact us with any feedback or request another flight research.