Here is a reply I got from easyjet...I havent heard from Ryan air yet:
Thank you for contacting us. I apologise for the delayed response and can assure you this is not of our usual standard.
I was pleased to learn that you are hoping to fly with us soon.
I am pleased to confirm bookings can be made at the airport sales desk on the day which you intend to fly. However, I must advise that airport booking must be made 1 hour prior to the flights scheduled time of departure however, because you wish to take a bicycle with you we recommend that you check in 2 hours prior to your flights departure, as bicycles are carried subject to availability of space on board the aircraft. I must also advise that airport check-in will close promptly 40 minutes prior to your flights departure therefor if you have not completed all check-in procedures by this time, you risk forfeiting your seat. .
The hold baggage fee will be £8.00 per bag, per flight if paid at the airport. Irrespective of the number of checked-in bags, each passenger has a weight allowance of 20kg, after which excess baggage charges of £6.00 per extra kilo will apply.
For a manual handling fee of £20.00 per flight Bikes, Skis, Golf Clubs, Windsurfers, Surfboards, Hang-gliders and Firearms may be taken, which allows a further 12 kilos for your sports equipment. Only if your hold baggage and sports equipment combined weigh more than 32 kilos will you be charged excess baggage fees will be charged, accordingly.
You may also take one standard piece of hand baggage within the dimensions of 55x40x20cm. There is no weight restriction, within reasonable limits - i.e. you must be able to place the piece of baggage safely in the overhead compartments without assistance.
I have included a link below to more information on our baggage policy:
http://www.easyjet.com/EN/Book/regulations.html#baggage
The following conditions apply when travelling with a bike:
The bicycle must be packaged in a bicycle box or bag
Only one bicycle per bicycle box or bag will be permitted
No other items can be carried in the bicycle box (i.e. clothing)
The handlebars must be flush with the frame
The pedals must be flush against the frame or removed
Unfortunately, I regret that cycle bags will not be available to buy or use at the airport and therefor we recommend that your bicycle is packaged accordingly before arriving at the airport to check in for your flight. I apologise in advance for any inconvenience this may cause you.
For future queries, you may wish to use the ‘frequently asked questions’ (FAQ) section under the ‘contact us’ heading on our website, which will provide the answers to our most commonly asked questions without the need to wait for an email reply. You can find the ‘contact us’ section by using this link;
http://easyjet.custhelp.com/
Thank you for taking the time to contact us. If you require any further assistance, please do not hesitate to contact us again via the contact us section of the easyJet web site or alternatively call easyJet Customer Services on 0871 244 23 66 (calls charged at 10p per minute from landlines, mobiles and other network charges may vary accordingly)
Yours sincerely