Flight tickets are documents that allow passengers to travel on an airplane from one location to another. They can be purchased through airlines, travel agencies, or online platforms. The ticket includes important information such as the departure and arrival cities, flight times, and the passenger's name. There are different types of flight tickets, including one-way, round-trip, and multi-city tickets. Prices can vary based on factors like the airline, time of booking, and travel season. Passengers may also have options for different classes, such as economy, business, or first class, which offer varying levels of comfort and service.