Spirit Air is adding more fees for travelers who wait to pay for carry on or checked luggage within 24 hours of your flight.
If you pay ahead of time for your carry-on --and aren't a member of Spirit's fare club -- you'll pay $30 for a carry-on that won't fit under the seat.
If you wait and pay last minute online, it'll be $5 more!
It's $10 more if you pay over the phone.
The changes are in effect for travelers who booked on or after March 24th.
