Cheapest return flights from Porto to Singapore in September from 659€

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

Return flights

06 Sep - 20 Sep SWISS
14 Sep - 02 Oct Lufthansa
12 Sep - 23 Sep Lufthansa
13 Sep - 23 Sep SWISS
13 Sep - 24 Sep SWISS
12 Sep - 24 Sep SWISS
13 Sep - 02 Oct SWISS
18 Sep - 22 Sep British Airways
15 Sep - 03 Oct Lufthansa

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