Cheapest return flights from Dublin to Porto in September from $103

Best time to book flights for Dublin (DUB) to Porto (OPO) flights at AirHint

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

Return flights

30 Sep - 04 Oct Ryanair direct
30 Sep - 14 Oct Ryanair direct
29 Sep - 04 Oct Vueling Airlines
29 Sep - 14 Oct Vueling Airlines
02 Sep - 17 Sep Ryanair direct
30 Sep - 11 Oct Ryanair direct
28 Sep - 04 Oct Ryanair direct
30 Sep - 16 Oct Ryanair direct
28 Sep - 14 Oct Ryanair direct
30 Sep - 08 Oct Ryanair direct
30 Sep - 18 Oct Ryanair direct
02 Sep - 16 Sep Ryanair direct
16 Sep - 23 Sep Ryanair
02 Sep - 12 Sep Ryanair direct
02 Sep - 18 Sep Ryanair direct
16 Sep - 23 Sep Ryanair direct
02 Sep - 04 Sep Ryanair direct
20 Sep - 24 Sep TAP
21 Sep - 25 Sep TAP
20 Sep - 23 Sep Ryanair

Also check the deals for one-way flights from Dublin 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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