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

Cheapest flights for September 2025

Departure date	Cheapest price
30 Sep 2025	89 €	Book Now
25 Sep 2025	89 €	Book Now
19 Sep 2025	109 €	Book Now
18 Sep 2025	109 €	Book Now
20 Sep 2025	112 €	Book Now

Cheapest flights for October 2025

Departure date	Cheapest price
28 Oct 2025	25 €	Book Now
27 Oct 2025	28 €	Book Now
31 Oct 2025	31 €	Book Now
23 Oct 2025	34 €	Book Now
26 Oct 2025	40 €	Book Now

Cheapest flights for November 2025

Departure date	Cheapest price
10 Nov 2025	28 €	Book Now
15 Nov 2025	28 €	Book Now
16 Nov 2025	28 €	Book Now
09 Nov 2025	29 €	Book Now
01 Nov 2025	30 €	Book Now

Cheapest flights for December 2025

Departure date	Cheapest price
06 Dec 2025	58 €	Book Now
12 Dec 2025	61 €	Book Now
04 Dec 2025	69 €	Book Now
13 Dec 2025	70 €	Book Now
05 Dec 2025	71 €	Book Now

Cheapest flights for January 2026

Departure date	Cheapest price
08 Jan 2026	38 €	Book Now
19 Jan 2026	46 €	Book Now
12 Jan 2026	46 €	Book Now
10 Jan 2026	46 €	Book Now
06 Jan 2026	46 €	Book Now

Cheapest flights for February 2026

Departure date	Cheapest price
14 Feb 2026	46 €	Book Now
07 Feb 2026	46 €	Book Now
05 Feb 2026	46 €	Book Now
02 Feb 2026	46 €	Book Now
01 Feb 2026	46 €	Book Now

Cheapest flights for March 2026

Departure date	Cheapest price
21 Mar 2026	46 €	Book Now
14 Mar 2026	46 €	Book Now
20 Mar 2026	71 €	Book Now
19 Mar 2026	77 €	Book Now
13 Mar 2026	81 €	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 Cologne to all destinations

Ryanair deals from Porto to all destinations

Cheapest Ryanair flights Cologne to Porto from 25€