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
12 Dec - 19 Dec	Ryanair	direct
05 Dec - 08 Dec	Ryanair	direct
05 Dec - 15 Dec	Ryanair	direct
12 Dec - 29 Dec	Ryanair	direct
15 Dec - 19 Dec	Ryanair	direct
04 Dec - 08 Dec	Ryanair
13 Dec - 19 Dec	Ryanair
10 Dec - 14 Dec	Ryanair
05 Dec - 07 Dec	Ryanair
31 Dec - 08 Jan	easyJet
15 Dec - 01 Jan	Ryanair
17 Dec - 11 Jan	easyJet
19 Dec - 11 Jan	easyJet
15 Dec - 01 Jan	Ryanair	direct
21 Dec - 18 Jan	easyJet
26 Dec - 02 Jan	Ryanair	direct
29 Dec - 02 Jan	Ryanair	direct
20 Dec - 08 Jan	easyJet
21 Dec - 09 Jan	easyJet

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.

Book a cheap hotel in Porto

Cheap car rent in Porto

Cheapest return flights from Frankfurt to Porto in December from $72

Return flights