Cheapest return flights from Singapore to Lisbon in September from $615

Best time to book flights for Singapore (SIN) to Lisbon (LIS) flights at AirHint

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

Return flights

23 Sep - 02 Oct British Airways
24 Sep - 07 Oct British Airways
10 Sep - 17 Sep SWISS
06 Sep - 20 Sep British Airways
28 Sep - 14 Oct SWISS
19 Sep - 29 Sep Qatar Airways
13 Sep - 10 Oct Qatar Airways
12 Sep - 26 Sep Qatar Airways
05 Sep - 14 Sep Finnair

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

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