A ticket is a voucher that indicates that an individual is entitled to admission to an event or establishment such as a theatre, amusement park, stadium, or tourist attraction, or has a right to travel on a vehicle, such as with an airline ticket, bus ticket or train ticket. An individual typically pays for a ticket, but it may be free of charge. A ticket may serve simply as proof of entitlement or reservation. A ticket may be valid for any seat or for a specific one.

An airline ticket is a document or electronic record, issued by an airline or a travel agency, that confirms that an individual is entitled to a seat on a flight on an aircraft. The airline ticket may be one of two types: a paper ticket, which comprises coupons or vouchers; and an electronic ticket.