Originally Posted by
LeifurEriksson
You will NOT be offloaded of a flight for excess carry-on luggage. Worst case is you have to pay, more likely you won't and your luggage is just fitted with pre-printed tags and jammed into the belly.
This isn't what Ryanair say in their Terms and Conditions though:
"Any passenger who arrives at the airport with cabin baggage that exceeds the maximum weight and/or dimensions will be required to check-in again at the airport and will be charged an Airport Check-In fee of £3.00/€4.00 per person/per one way flight (or local currency equivalent) plus the standard checked baggage fee of £12.00/€18.00 per item/per one way flight.
This facility is available only if the applicable airport check-in is still open.
We reserve the right to cancel your reservation and to deny you boarding if you do not comply with the above. "
I appreciate that this may not be what happens in practice,but they do reserve the right to offload you!