That's going to be harder after AirlineReporter.com confirmed that Allegiant will become the second airline to charge for carry-on bags. Yes, carry-ons.
From USA Today:
Like Spirit, Allegiant will allow customers to bring on one personal item free of charge, but only if those items can fit under the seat in front them. Bags that must be put in overhead storage bins will cost $35 if not reserved in advance, according to the report at AirlineReporter.com.
Allegiant apparently will offer a discounted rate if purchased online in advance, but AirlineReporter.com says the carrier "has not confirmed how much the fee' will be.
Allegiant has yet to make an official announcement about the change. AirlineReporter.com quotes an Allegiant spokesman saying it will go into effect tomorrow and details will appear on the airline's website later tonight.