10. Allegiant Air Airlines
If you’re flying with dogs or domestic cats, you can bring them along in the cabin with Allegiant airlines as long as they can fit in the pet carrier under the seat in front of you. However keep in mind that pets and animals are not allowed onboard to and from Hawaii.
You’ll pay $100 fee per flight per carrier and can’t bring more than two pets per carrier. There is no charge for service animals and emotional animals. However you still need to make a reservation for these by selecting special assistance option under your name while booking your flight.