Cheapest return flights from Belfast to Porto in September from $195

Best time to book flights for Belfast (BFS) to Porto (OPO) flights at AirHint

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

Return flights

17 Sep - 24 Sep Ryanair direct
03 Sep - 17 Sep Ryanair direct
10 Sep - 17 Sep easyJet
09 Sep - 16 Sep Ryanair
01 Sep - 06 Sep Ryanair
20 Sep - 24 Sep easyJet
20 Sep - 08 Oct Ryanair direct
17 Sep - 04 Oct Ryanair direct
10 Sep - 24 Sep Ryanair direct
13 Sep - 17 Sep easyJet
20 Sep - 24 Sep Ryanair direct
07 Sep - 10 Sep Ryanair
24 Sep - 08 Oct Ryanair direct
20 Sep - 04 Oct Ryanair direct
24 Sep - 04 Oct Ryanair direct

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

Skyscanner

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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