Cheapest return flights from Singapore to Lisbon in September from $707

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

Return flights

17 Sep - 21 Sep Etihad Airways
17 Sep - 25 Sep Etihad Airways
16 Sep - 23 Sep SWISS
18 Sep - 21 Sep Turkish Airlines
01 Sep - 01 Oct Etihad Airways
16 Sep - 25 Sep KLM
07 Sep - 11 Sep Turkish Airlines
07 Sep - 15 Sep Turkish Airlines
16 Sep - 21 Sep KLM
15 Sep - 22 Sep Turkish Airlines
16 Sep - 27 Sep KLM
11 Sep - 07 Oct Turkish Airlines
29 Sep - 05 Oct Air France
01 Sep - 04 Oct Finnair
23 Sep - 08 Oct Lufthansa
01 Sep - 31 Oct Etihad Airways

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

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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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