here is what ryan air will accept... imagine they are same as most airlines
"What photo-Id do I need?
----------------
All passengers must present valid photo identification to check-in for all flights. The only acceptable forms of photo-ID on Ryanair flights are:
A valid passport (passport for travel outside the EEA must have six months validity beyond the date of entry).
A valid National Identity Card issued by the government of a European Economic Area (EEA) country. Only the following countries from the EEA issue National Identity Cards which are acceptable for carriage: Austria, Belgium, Bulgaria, Finland, France, Germany, Gibraltar, Greece, Cyprus, Czech Republic, Estonia, Hungary, Italy, Liechtenstein, Lithuania, Luxembourg, Netherlands, Malta, Poland, Portugal, Romania, Slovakia, Slovenia, Spain, Sweden (for travel within the Schengen area only),or Switzerland.
A valid driving licence with photo is acceptable photo ID for travel on domestic flights within the UK and domestic flights within the Republic of Ireland.
For travel on domestic flights within Italy only, a valid driving licence with photo issued by the applicable Italian authorities is acceptable photo-id.
For British and Irish citizens who are travelling on flights to/from the United Kingdom to/from the Republic of Ireland (Common Travel Area), a valid driving licence with photo is acceptable photo ID. Passengers who are citizens of other countries travelling on these routes must present a valid passport (with visa if applicable) or a National Identity Card issued by the government of a European Economic Area (EEA) country.
In accordance with Article 28(1) of the 1951 UN Convention, a valid UN Refugee Convention Travel Document issued by a Government in place of a valid passport is acceptable.
N.B. Children under 16 years (including infants) travelling with an adult are required to have photo-ID when travelling on flights between EEA countries. Acceptable photo-ID for children under 16 is either a valid passport or a valid National Identity Card issued by an EEA country.
Photo-ID for children under 16 years is not required for:
Children travelling with an adult between the United Kingdom and the Republic of Ireland or domestic flights within either the United Kingdom or Ireland
Children included on the passport of the parent with whom they are travelling.
German children under 10 in possession of a valid German Government Kinderausweis travel document.
Italian children up to the age of 15 years who are in possession of a valid Certificato Di Nascita which has been endorsed as "VALIDO PER L'ESPATRIO" valid for travel and signed by "IL QUESTORE" subject to acceptance for entry to your destination.
Residence cards, family books or military id cards will not be accepted for travel in place of the required valid photo-ID detailed above.
N.B. Passengers travelling to non EU countries (e.g. Morocco) must ensure that they meet the immigration entry requirements for that country.
Expired or damaged forms of photo-ID will not be accepted for any flight.
Failure to present valid photo-ID matching the names on your reservation will result in your being refused check-in. "
here is the link for it www.ryanair.com/site/EN/faqs.php?sect=pid&quest=photoid