Cheapest return flights from Porto to Singapore in September from 625€

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

Return flights

16 Sep - 01 Oct Lufthansa
20 Sep - 08 Oct SWISS
09 Sep - 25 Sep SWISS
14 Sep - 02 Oct Lufthansa
03 Sep - 12 Sep Vueling Airlines
08 Sep - 14 Sep Turkish Airlines

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

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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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