Frontier Airlines allows one free personal item with the option of carry-on and checked baggage for a fee. Each type of baggage comes with size restrictions, and larger items incur an additional fee.
The one free personal item includes bags such as purses, briefcases, backpacks and computer bags. The maximum size for the personal item is 14 inches tall by 8 inches wide by 18 inches long. This includes all parts of the bag such as wheels and handles.
The maximum size for a carry-on bag is 24 inches tall by 10 inches wide by 16 inches long. Travelers on a Classic Plus ticket or EarlyReturns Elite members get a free carry-on bag. Others pay a fee ranging from $30 to $50, as of April 2015, depending on when the fee is paid. Paying online is the cheapest option.
Checking a bag is cheaper than paying for a carry-on bag. The fee for the first checked bag is between $20 and $25, the second bag costs $30 and the third bag costs $75. Classic Plus travelers get one free checked bag.
Checked bags have a maximum size of 62 inches for the overall dimensions and a maximum weight of 50 pounds. Larger bags have an additional fee. Frontier does not allow any bags heavier than 100 pounds or larger than 110 inches.