More airfare add-ons ahead.
Frontier Airlines will start charging up to $100 for carry ons for passengers who buy the cheapest fare from a 3rd party website.  If you buy your ticket on Frontier's website, however, you will be allowed to board with ONE carry-on for FREE.

In other words, they want you to book on their website which is cheaper for the airline.  They don't have to pay a fee to the third party.

Don't be surprised when the other airlines start doing the same thing.
DONNIE AND LINDA ARE BITING THEIR NAILS
Donnie says, "We may get a low, tonight, that is 30 degrees below average. With hundreds of dollars of new spring plants outdoors, we're on edge!"
EVEN FARTHER SOUTH WILLARD SAYS, "Time to brave the WIND AND CHILL and walk the dog.  Buddy will be right at home with Scotland like weather."