some airlines require passports, some do not. Check with them.
Immigration may ask for "proof of identity"
passports are easier
Yes, if you have an Irish one.
no you dont
Yes, you are flying to a different country.
AnswerNo, as both cities are in the UK****************************************^^ Actually that depends on which airline you are flying with. Ryanair and Easyjet are the only two airlines that fly from Liverpool to Belfast, and Ryanair now requires that all passengers check in with a passport or NID card, no matter where they are flying.
The ID that is needed to fly to Dublin from Prestwick on a Ryanair flight is a passport.
Yes, you need a passport to fly internationally.
Yes, you need a passport to fly internationally.
Yes, you need a passport to fly out of Tijuana.
Yes, babies need a passport to fly internationally.
Yes. You need a passport to fly anywhere.
Yes, children need a passport to fly internationally.
Yes, children need a passport to fly to Mexico.