Originally Posted by
Agneisse
Do not do anything with Ryanair at the airport, their business model is designed around maximizing profit from the unprepared / unaware. Even purchasing it on the website at the time of check-in is better than doing it at the airport.
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https://www.ryanair.com/gb/en/useful-info/baggage/bags
Cost
The 20kg check-in bag costs €/£25 if purchased while booking the flight, and costs €/£40 after the booking is made.
Checked bags are non-refundable, are charged per person, per one way flight, and cannot be swapped between passengers or changed to other bag options.
*Higher bag fees apply when checked bags are purchased via a Ryanair call centre, at airport ticket desks, during peak periods and on selected routes.