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

Return flights

12 Dec - 15 Dec	Ryanair	direct
05 Dec - 08 Dec	Ryanair	direct
05 Dec - 12 Dec	Ryanair	direct
12 Dec - 29 Dec	Ryanair	direct
05 Dec - 06 Dec	Ryanair
05 Dec - 07 Dec	Ryanair
10 Dec - 14 Dec	Ryanair
05 Dec - 05 Dec	Ryanair
03 Dec - 05 Dec	Ryanair
08 Dec - 10 Dec	Ryanair
15 Dec - 26 Jan	Ryanair
13 Dec - 08 Jan	easyJet
26 Dec - 18 Jan	Ryanair
20 Dec - 20 Jan	Ryanair
28 Dec - 18 Jan	Ryanair
27 Dec - 18 Jan	Ryanair
19 Dec - 11 Jan	easyJet
15 Dec - 26 Jan	Lufthansa	direct
21 Dec - 18 Jan	easyJet
29 Dec - 01 Jan	Ryanair

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

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 Frankfurt to Porto in December from 61€

Return flights