Flickr / thinkpanama Consumers aren't getting such a great deal on really cheap business class fares, according to The Flight Deal. Known as K-UP or Y-Up fares, these seats automatically boot fliers from coach to business class and tend to be cheaper than the full business class fare.
Regarding this, what is a restricted air ticket?
Restricted—These fares have advance purchase requirements, restrictions on the use of the ticket, and penalties for changes to the original ticket. Because they limit your travel and reservation options and impose penalties for change, these tickets are sold at a discount to unrestricted fares on the same flight.
Is there a weight limit to fly on a plane?
There is no set weight limit for passengers on commercial flights in the U.S., but some airlines, most notably Southwest, require customers who cannot fit in one seat to book a second. Call the airline you wish to fly and ask about passenger size regulations.
What is an unrestricted airline ticket?
American Airlines states that its unrestricted fares are "fully refundable and do not have advance purchase requirements. If you purchase a ticket that is an unrestricted fare, you can make changes to your flight with no change fee (based on seat availability)."