Can large dogs fly in the cabin?

No — most airlines require dogs to fit inside a carrier that slides under the seat in front of you. If your dog is too large for an under-seat carrier, they must fly as manifested cargo or use a professional pet transport service.

What is the cheapest airline to fly with a dog?

As of 2026, Allegiant Air is the cheapest at $50 one-way for in-cabin pets. Sun Country ($75 advance purchase) and Breeze Airways ($75–$99) are also budget-friendly options. Hawaiian Airlines offers the cheapest interisland rate at $35.

How old does a puppy need to be to fly?

For domestic U.S. flights, most airlines require puppies to be at least 8–10 weeks old. For international flights into the United States, puppies must be at least 6 months old under the new CDC import rules effective August 2024.

Do I need a health certificate to fly with my dog?

Most airlines require a veterinary health certificate issued within 7–10 days of travel. The certificate confirms your dog is healthy and up to date on vaccinations. For international travel, the health certificate must typically be endorsed by USDA APHIS.

Can I buy a seat for my dog on an airplane?

Most commercial airlines do not allow passengers to purchase a separate seat for their dog. Dogs must either fit in an under-seat carrier or travel in the cargo hold. JSX, a semi-private airline, is one of the few exceptions.

Is it safe to sedate my dog for a flight?

Veterinarians and airlines strongly advise against sedating pets for air travel. Sedation impairs a dog's ability to regulate breathing and body temperature, which is particularly dangerous in the pressurized cargo hold. Speak with your vet about safer alternatives like calming treats or anxiety vests.

What happens during TSA screening with a dog?

At the TSA checkpoint, you remove your dog from the carrier. The empty carrier goes through the X-ray machine. You carry your dog through the metal detector or screening area. A TSA officer may visually inspect the carrier. Then you and your dog proceed to the gate.

Flying with a Dog in 2026: Complete Guide & Airline Rules

Compare pet fees for 12+ airlines ($50–$350 cabin, $250–$700 cargo). Cabin vs cargo decision guide, breed restrictions, summer embargo dates, and a printable day-of-travel checklist.