Airline tickets are documents or electronic records that confirm a passenger's reservation for a flight. They include important details such as the traveler's name, flight number, departure and arrival times, and the origin and destination airports. Tickets can be purchased directly from airlines or through travel agencies, and they often come in different classes, such as economy, business, and first class. When buying an airline ticket, travelers may encounter various pricing options, including one-way, round-trip, and multi-city tickets. Prices can vary based on factors like demand, season, and how far in advance the ticket is purchased. Additionally, some tickets may have restrictions, such as non-refundable policies or limited changes.