If you want to travel with your cat in the passenger compartment when you fly, you'll need an airline-approved cat carrier. These carriers are sold at most pet shops and online. Their description should state that they are approved by major airlines.

These carriers must fit certain dimensions – many airlines will require that the carrier fit underneath the seat in front of you, however, some airlines will allow you to buy another seat and travel with your cat next to you.

However, never assume a particular airline will allow your cat on board simply because you have an approved carrier. Regulations change and your carrier may not be approved for use on that particular airline. When making your reservation, notify the airline that you will be traveling with your cat and confirm all information 24 to 48 hours before your flight. You will also need health certificates and statements of health from your vet on most airlines. Make sure you have enough food, water and litter for the cat when you finish the flight. Consider bringing extra in case your flight is delayed.