I checked with the airlines.. Frontier allows rabbits and also flies the route I’m looking at. Here’s their policies if anyone else is interested:
“A one-way, directional fee of $75 will be assessed at check-in.Make advance reservations on the phone. Pets can’t be booked online, so please call our Reservations Department at 800-432-1FLY (1359) so we can ensure availability and reserve space for your pet as no more than ten pet containers will be accepted per flight and no more than one pet container may be carried per person.
Only certain animals are allowed in the cabin:
Domesticated dogs, cats, rabbits, guinea pigs, hamsters, or small household birds may be carried on flights within the United States.
Domesticated dogs and cats only may be carried to or from international destinations.
There are some things you need to do before arriving at the airport:
Make arrangements for complying with applicable laws, customs and other governmental regulations, requirements or restrictions of the country, state or territory to which the animal is being transported. This is your responsibility.
Obtain required health documents as described below under health and wellness.
Due to limited space in the cabin, if you are bringing on a pet container, then you may only carry a personal item. No other carry-on baggage is allowed, as the pet container counts as your piece of carry-on baggage.
The travel container must be large enough for the pet to stand, turn around, and lie down in a natural position. The carrier must also fit underneath the seat in front of you. There may be certain seats which cannot accommodate your pet container, but we’ll work with you to get a seat assignment that works. Maximum dimensions are based on aircraft type:
Airbus A318/A319/A320: 24″ length x 15. 5″ width x 9.5″ height.
Embraer E190: 18″ length x 13.5″ width x 10″ height.
Embraer E145: 17″ length x 12″ width x 10″ height.
Up to two (2) small animals may be transported in one travel container as follows: puppies or kittens (8-10 weeks old), hamsters, guinea pigs, rabbits, and small household birds.” http://www.frontierairlines.com/customer-service/travel-support/family-pets/traveling-with-pets
But driving may be better, even though it will take 5 days. At least then I’ll have all of their bunny supplies (litterbox, pen, toys, etc) when I get there rather than having to wait for the moving truck. I will be driving by myself, so it will take longer and I’ll have to stop frequently. I’ll have to plan out the route and find pet-friendly hotels..