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

Return flights

09 Sep - 16 Sep	Air France
16 Sep - 23 Sep	Air France
23 Sep - 30 Sep	Air France
17 Sep - 18 Oct	Wizz Air
18 Sep - 29 Sep	Etihad Airways
09 Sep - 29 Sep	Etihad Airways
17 Sep - 24 Sep	Etihad Airways
24 Sep - 01 Oct	Etihad Airways
20 Sep - 04 Oct	Wizz Air Malta
23 Sep - 07 Oct	SWISS
11 Sep - 21 Sep	Air France
30 Sep - 13 Oct	Lufthansa
29 Sep - 09 Oct	Lufthansa
15 Sep - 22 Sep	Air France
20 Sep - 05 Oct	Wizz Air Malta
25 Sep - 09 Oct	Lufthansa
21 Sep - 30 Sep	Air France
10 Sep - 17 Sep	Air France
27 Sep - 04 Oct	Wizz Air Malta
28 Sep - 27 Oct	Wizz Air

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

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 Lisbon to Singapore in September from 613€

Return flights