A flight ticket is a document that confirms a passenger's reservation on an airplane. It includes essential information such as the traveler's name, flight number, departure and arrival times, and the date of travel. Flight tickets can be purchased through airlines, travel agencies, or online booking platforms. 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 class. Passengers must present their flight ticket at the airport to check in and board the aircraft, ensuring a smooth travel experience.