Posted: Sun Aug 20, 2023 2:05pm
If you are talking about cabin baggage (ie bringing on to plane) you can bring 1 small bag (ie handbag or satchel) that fits under seat included in your ticket price. If you want to bring a bigger bag in addition to your handbag, you must pay priority (or much much more at airport) and that bag must be under 10kgs and fit in the bag checker at check-in/boarding, so it must be smaller than 55 x 40 x 20cm.
If you have already bought your ticket, you can access your ticket through the app or on computer and add extra bags etc and pay for them, usually dearer than if done at time of booking but way less than doing it at the airport
Checked in the hold baggage can be up to 20kg and incurs its own charges, much cheaper if booked and paid at the same time as the ticket
Ryanair staff get a cut of the sales and the charges that they can force upon you, so expect no mercy