Travel class refers to the different categories of seating and service offered by airlines, trains, and other transportation providers. The main classes typically include economy class, business class, and first class. Each class varies in terms of comfort, amenities, and price, with first class providing the most luxurious experience and economy class being the most affordable. Passengers in business class often enjoy additional perks such as more spacious seating, priority boarding, and enhanced meal options. The choice of travel class can significantly impact the overall travel experience, influencing factors like legroom, privacy, and access to lounges at airports.