The most common checked luggage size limit is 62 linear inches, but this varies among airlines. Size limits won't usually be a concern if you're traveling with standard luggage items like a suitcase; ...

All checked luggage on a Spirit Airlines flight cannot exceed 40 pounds (18.1 kg) in weight and is no larger than 62 linear inches (length + width + height; 158 cm), including the handles and wheels.

Checked bags on Spirit Airlines should measure 62 linear inches (158cm) or less. You can calculate your bag’s linear inch measurement by adding the length, width and height measurements.

Spirit Airlines has dirt-cheap fares, but there’s a catch—you’ll pay for checked bags. Here are all of the baggage fees you can expect when flying with Spirit.

United Airlines has also instituted a similar fare to American Airlines' basic economy. In addition to the changes in the size of its carry-on bags, Spirit Airlines also recently became the latest U.S ...

The airline operates an ultra-low-cost business model, and the practice will allow it to cut costs. It says passengers check about 1,000 bags daily right now at those two airports.

Baggage fees are a huge money-maker for airlines. According to the L.A. Times, an IdeaWorks Co. study found that 38.5% of Spirit's revenue came from extra fees in 2012, the most of any airline.