Traveling With Pets: What US Airlines and Hotels Actually Allow

“Pet-friendly” is one of the most inconsistently defined words in American travel. It can mean a hotel that welcomes a 90-pound dog in any room, or one that allows a single cat under 15 pounds for a $75 nightly fee, or an airline that will only fly a small dog in a carrier under the seat in front of you. Knowing the actual rules before booking saves both money and last-minute panic at the airport or front desk.

Flying with a pet: the rules that actually apply

For an ordinary pet, flying in the cabin usually means a small dog or cat in an approved carrier that fits under the seat in front of you and counts as your carry-on. As of mid-2026, most major US airlines charge roughly $100 to $150 each way for an in-cabin pet, charged per segment, and they cap how many pets can travel on each flight or in each cabin, so booking early matters. Several large carriers, including American and United, no longer accept ordinary pets as checked baggage or cargo except for military and State Department personnel traveling on orders, which leaves owners of larger dogs with specialist pet transport services or a road trip. Health-certificate requirements vary by airline and by destination state, so check both. Trained service animals are a separate legal category under the Air Carrier Access Act: the US Department of Transportation’s guidance explains what documentation airlines can and cannot require, and it makes clear that emotional support animals are not service animals under those rules.

What hotel “pet-friendly” usually actually means

Weight and breed limits. Many chains cap pets at 40 or 50 pounds and maintain breed restriction lists, even when a location is marketed as broadly pet-friendly.
Non-refundable pet fees. These commonly range from 25 to 150 dollars per stay and are separate from any damage deposit.
A cap on the number of pets per room, almost always one or two, regardless of your total group size.
Designated pet-friendly rooms or floors, meaning you may not be able to request just any room type even at a chain that generally allows pets.

Road trips: the low-friction option most families underrate

Driving remains the simplest way to travel with most pets, but it still rewards preparation: a secured crate or harness for safety, frequent stops for water and bathroom breaks, and never leaving an animal alone in a parked car, where interior temperatures can become dangerous within minutes even on a mild day. Acclimating a pet to short car rides before a long trip reduces the anxiety-driven whining or vomiting that otherwise turns the first few hours into a stressful start.

A booking checklist for flying with a pet

Check the airline’s pet page before buying your own ticket, then add the pet to the reservation straight away, because per-flight limits fill up.
Measure the pet and the carrier. Airlines set maximum carrier dimensions, which can be smaller on regional aircraft, and the animal must be able to stand up and turn around inside.
Count the fee per segment. A connection can mean paying the pet fee more than once each way.
Ask your vet about paperwork early: a health certificate, proof of rabies vaccination or both, depending on the airline and the destination.
Do not sedate a pet for travel unless your own veterinarian recommends it for that animal and that trip.

Crossing state lines and borders

Moving between US states with a pet can require a certificate of veterinary inspection, depending on the destination state and the species. The USDA pet travel pages link to each state’s requirements and are the best place to start. International travel is more involved: every destination country sets its own entry rules, often including a microchip, vaccinations and an endorsed health certificate, and some destinations take months of preparation. Dogs coming back into the United States must also meet CDC import requirements, which depend on where the dog has been and where it was vaccinated, so check them before you leave rather than on the way home.

Making the travel day easier for the animal

Get the pet used to its carrier weeks in advance. Leave it open in the living room with a familiar blanket inside and offer treats or meals in it, so it becomes a normal resting place rather than something that only appears before a vet visit. An absorbent pad in the base, a cloth that smells of home and a light meal a few hours before departure, rather than just before, all help.

For hotels, call the specific property rather than relying on the chain’s website, since weight limits, fees and the number of pets allowed often differ from one location to the next. Look up the nearest emergency veterinary clinic at your destination before you need it.

Planning around the animal, not just the itinerary

The right travel approach depends heavily on which animal you have and how it handles change, which loops back to the same evaluation described in Choosing Your First Pet — a laid-back senior cat and an anxious rescue dog are simply not the same travel companion. For most families, as we cover in How a Pet Changes a Family, building travel plans around the pet rather than squeezing the pet into existing plans is what keeps a trip enjoyable for everyone, including the animal.

Sources and further reading

Updated October 13, 2026: corrected and updated airline fee and cargo information, and added a booking checklist, interstate and international travel rules, and sources. How this article was prepared: researched from the sources listed above, then written and edited by Hugo Mellado. Pet & Pet is an independent publication, not a veterinary practice, and this article has not been reviewed by a veterinarian. See our editorial policy.

Keep reading: All pet guides · Choosing Your First Pet · How a Pet Changes a Family

Pet & Pet publishes educational content written and reviewed by Hugo Mellado. It is not veterinary advice and never replaces an examination by a licensed veterinarian. If an animal is unwell, contact a veterinary professional. Read our full Disclaimer.