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

Return flights

05 Oct - 15 Oct	Etihad Airways
19 Oct - 24 Oct	Etihad Airways
26 Oct - 08 Nov	Air France
08 Oct - 14 Oct	Etihad Airways
08 Oct - 15 Oct	Etihad Airways
09 Oct - 14 Oct	Etihad Airways
01 Oct - 10 Oct	Etihad Airways
02 Oct - 10 Oct	Etihad Airways
16 Oct - 29 Oct	Air France
24 Oct - 13 Nov	Qatar Airways
10 Oct - 21 Oct	Turkish Airlines
16 Oct - 20 Oct	Turkish Airlines
18 Oct - 01 Nov	Air France

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

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 Lisbon in October from 557€

Return flights