Uh oh, travelers, this might be turning into a trend. Starting tomorrow, Allegiant Air will begin charging passengers up to $35 for their carry-on bags, MSNBC reports. Passengers can bring one carry-on aboard for free, but only if it can fit under the seat in front of them, the president of the company explains; larger bags intended to go in the overhead bin will incur a fee. Pay online and the fee will be $10 to $30, but at the airport it'll be $35.
In 2010, Spirit Airlines introduced a similar carry-on fee of up to $45, which last year alone brought in $50 million. But one industry consultant says he doesn't expect this to catch on with larger carriers. Allegiant, he points out, is a small, low-cost outfit catering to vacationers. "No business-oriented airline would do this to customers with a laptop and valet bag," he says. "They would drive them right off the airplane." (Read more Allegiant Airlines stories.)