Cabin dog + carrier limit varies by airline and route; verify the current limit before booking
Airline dog policy
Allegiant Air
Allegiant Air may be an option on US leisure routes. Before you book, check the airline's current dog policy for your exact flight, including cabin or hold availability, breed rules, crate size, fees and destination paperwork.
Book early and confirm aircraft acceptance.
Under-seat dimensions can vary by aircraft.
Fees can change by region and currency.
Contact before booking
Confirm the dog booking directly with Allegiant Air.
Ask for written confirmation of the exact route, aircraft, dog weight, breed, carrier or crate size, fee and documents before paying.
Booking tip
Do not use Allegiant for cargo or large-dog travel. Ask for written confirmation of the exact operating carrier, date, aircraft, pet quota, dog weight, breed, carrier or crate size, handling method and destination documents before paying.
Why it can work
A direct flight with Allegiant Air can reduce transfer handling, but only if the airline confirms your dog is accepted on that aircraft and the destination rules match your plan.
Restrictions
Final acceptance depends on route, aircraft, live-animal quota, carrier or crate, dog age, breed, weather, transit countries and destination import rules. Small dogs and cats in cabin on domestic routes only.
Dog-owner notes
Use the official policy page as a starting point, then confirm your booking directly with Allegiant Air. Ask for written confirmation because pet rules can differ by aircraft, route, codeshare and season.
Final check before paying
Confirm the exact aircraft, route, dog breed, carrier size, temperature rules and destination import law directly with the airline. A country can allow dogs while a specific airline or aircraft refuses them.