We have prepared for you the list of the cheapest deals for Ryanair flight from Dublin (DUB) to Porto (OPO) by the month of departure.

Cheapest flights for September 2025

Departure date	Cheapest price
23 Sep 2025	93 €	Book Now
16 Sep 2025	102 €	Book Now
17 Sep 2025	111 €	Book Now
25 Sep 2025	114 €	Book Now
24 Sep 2025	115 €	Book Now

Cheapest flights for October 2025

Departure date	Cheapest price
31 Oct 2025	30 €	Book Now
11 Oct 2025	30 €	Book Now
12 Oct 2025	30 €	Book Now
18 Oct 2025	30 €	Book Now
30 Oct 2025	30 €	Book Now

Cheapest flights for November 2025

Departure date	Cheapest price
01 Nov 2025	30 €	Book Now
02 Nov 2025	30 €	Book Now
03 Nov 2025	30 €	Book Now
04 Nov 2025	30 €	Book Now
05 Nov 2025	30 €	Book Now

Cheapest flights for December 2025

Departure date	Cheapest price
10 Dec 2025	40 €	Book Now
03 Dec 2025	41 €	Book Now
06 Dec 2025	44 €	Book Now
04 Dec 2025	47 €	Book Now
05 Dec 2025	53 €	Book Now

Cheapest flights for January 2026

Departure date	Cheapest price
14 Jan 2026	42 €	Book Now
13 Jan 2026	50 €	Book Now
06 Jan 2026	50 €	Book Now
21 Jan 2026	54 €	Book Now
07 Jan 2026	54 €	Book Now

Cheapest flights for February 2026

Departure date	Cheapest price
25 Feb 2026	50 €	Book Now
24 Feb 2026	50 €	Book Now
23 Feb 2026	50 €	Book Now
04 Feb 2026	54 €	Book Now
05 Feb 2026	55 €	Book Now

Cheapest flights for March 2026

Departure date	Cheapest price
11 Mar 2026	76 €	Book Now
05 Mar 2026	87 €	Book Now
12 Mar 2026	88 €	Book Now
01 Mar 2026	88 €	Book Now
21 Mar 2026	98 €	Book Now

The deals are updated by AirHint regularly. Please keep in mind that the price may go up as tickets are purchased by other travellers. Only the cheapest one-way flights are offered. Book fast to secure these cheap Ryanair prices.

Ryanair deals from Dublin to all destinations

Ryanair deals from Porto to all destinations

Cheapest Ryanair flights Dublin to Porto from 30€