What type of class does exist in a plane?
Answer from a Native speaker
Generally there are three classes that you can be in when traveling on an airplane. The most expensive is "first class", which is found at the front of the plane and normally only reserved by frequent flyers, super rich, or famous people. The second most expensive class is called the "business class", which is the group of seats right after the first class section. This class offers more space and benefits than the normal seats. The last and normally the largest section of seats on a plane is the "economy class", which is the general seating on a plane which is the cheapest fare you can buy a ticket for.