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

Return flights

23 Dec - 06 Jan	Vueling Airlines
02 Dec - 06 Dec	Ryanair	direct
23 Dec - 02 Jan	Vueling Airlines
23 Dec - 04 Jan	Vueling Airlines
23 Dec - 06 Jan	Ryanair	direct
30 Dec - 04 Jan	TAP
02 Dec - 14 Dec	Ryanair
02 Dec - 08 Dec	Ryanair	direct
02 Dec - 14 Dec	Ryanair	direct
22 Dec - 28 Dec	TAP
12 Dec - 14 Dec	Ryanair
05 Dec - 06 Dec	Ryanair	direct
12 Dec - 02 Jan	Vueling Airlines
23 Dec - 04 Jan	Ryanair	direct
06 Dec - 08 Dec	TAP
12 Dec - 14 Dec	Ryanair	direct
12 Dec - 02 Jan	Ryanair	direct
27 Dec - 06 Jan	Ryanair	direct
30 Dec - 06 Jan	Ryanair	direct
06 Dec - 14 Dec	Ryanair

Also check the deals for one-way flights from Porto to Brussels 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 Porto to Brussels in December from $120

Return flights