Cheapest return flights from Porto to Singapore in December from 636€

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

Return flights

05 Dec - 08 Dec KLM
13 Dec - 04 Jan Ryanair
22 Dec - 04 Jan Ryanair
30 Dec - 02 Jan SWISS
21 Dec - 03 Jan Turkish Airlines
26 Dec - 31 Dec SWISS
26 Dec - 03 Jan SWISS
26 Dec - 05 Jan SWISS

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

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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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