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

Cheapest flights for March 2026

Departure date	Cheapest price
30 Mar 2026	98 €	Book Now
29 Mar 2026	98 €	Book Now

Cheapest flights for April 2026

Departure date	Cheapest price
29 Apr 2026	54 €	Book Now
01 Apr 2026	63 €	Book Now
15 Apr 2026	63 €	Book Now
22 Apr 2026	67 €	Book Now
08 Apr 2026	82 €	Book Now

Cheapest flights for May 2026

Departure date	Cheapest price
13 May 2026	50 €	Book Now
27 May 2026	50 €	Book Now
20 May 2026	63 €	Book Now
06 May 2026	63 €	Book Now
04 May 2026	98 €	Book Now

Cheapest flights for June 2026

Departure date	Cheapest price
03 Jun 2026	67 €	Book Now
24 Jun 2026	67 €	Book Now
10 Jun 2026	76 €	Book Now
17 Jun 2026	76 €	Book Now
21 Jun 2026	111 €	Book Now

Cheapest flights for July 2026

Departure date	Cheapest price
08 Jul 2026	76 €	Book Now
29 Jul 2026	76 €	Book Now
22 Jul 2026	76 €	Book Now
01 Jul 2026	76 €	Book Now
15 Jul 2026	76 €	Book Now

Cheapest flights for August 2026

Departure date	Cheapest price
12 Aug 2026	76 €	Book Now
26 Aug 2026	76 €	Book Now
19 Aug 2026	87 €	Book Now
05 Aug 2026	93 €	Book Now
23 Aug 2026	98 €	Book Now

Cheapest flights for September 2026

Departure date	Cheapest price
09 Sep 2026	67 €	Book Now
02 Sep 2026	67 €	Book Now
23 Sep 2026	73 €	Book Now
16 Sep 2026	76 €	Book Now
06 Sep 2026	111 €	Book Now

Cheapest flights for October 2026

Departure date	Cheapest price
18 Oct 2026	122 €	Book Now
19 Oct 2026	122 €	Book Now
21 Oct 2026	122 €	Book Now
04 Oct 2026	147 €	Book Now
05 Oct 2026	147 €	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 Porto to all destinations

Ryanair deals from Shannon to all destinations

Cheapest Ryanair flights Porto to Shannon from 50€