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

Return flights

24 Sep - 01 Oct	Pegasus Airlines
22 Sep - 26 Sep	Air France
29 Sep - 06 Oct	Wizz Air
22 Sep - 29 Sep	Air France
24 Sep - 02 Oct	Pegasus Airlines
26 Sep - 13 Oct	Transavia France
28 Sep - 12 Oct	Transavia France
26 Sep - 03 Oct	Pegasus Airlines
26 Sep - 06 Oct	Transavia France
27 Sep - 06 Oct	TAP
27 Sep - 05 Oct	TAP
25 Sep - 13 Oct	Transavia France
23 Sep - 30 Sep	Pegasus Airlines
23 Sep - 26 Sep	Transavia France
17 Sep - 24 Sep	Pegasus Airlines
23 Sep - 27 Sep	Pegasus Airlines
18 Sep - 25 Sep	Pegasus Airlines
22 Sep - 27 Sep	Ryanair
21 Sep - 29 Sep	Air France
21 Sep - 26 Sep	Air France

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 $719

Return flights