How to Fly With a Dog: The Complete Guide

By Boops Editorial Voice

✓ Medically reviewed by Boops Editorial Voice — July 13, 2026

Travel · July 11, 2026 · 4 min read

Flying with a dog feels like a lot to get wrong, but most of it is a few boring steps done early.

The most persistent myth about flying with a dog is that a sedative makes the trip easier on them. It usually does the opposite. The American Veterinary Medical Association advises against sedating or tranquilizing pets for air travel unless a veterinarian decides it is medically necessary, because sedation can raise the risk of respiratory and cardiovascular problems at altitude and leaves a dog less able to keep its balance or regulate its temperature. Most airlines will not accept a pet that appears sedated. The goal isn’t to switch your dog off. It’s to prepare well enough that they don’t need it.

Here’s how, in the order that actually matters.

Decide whether your dog should fly at all

Start with an honest look at your dog, not the destination.

Short-nosed, or brachycephalic, breeds — pugs, French bulldogs, English bulldogs, Boston terriers, Shih Tzus — carry real risk in the air. Their shortened airways make breathing and heat regulation harder, and many airlines refuse them in the cargo hold outright. American Airlines, for one, does not accept brachycephalic breeds in cargo at all. If your snub-nosed dog is small enough for the cabin and calm, in-cabin travel is the safer path. If they’re too big for a cabin carrier, driving or a trusted sitter is often the kinder call.

Age matters too, especially for international trips. Under CDC rules that took effect August 1, 2024, any dog entering or returning to the United States must be at least six months old and microchipped — even a US dog coming home from abroad.

Sick, very anxious, or unvaccinated dogs are usually better left home. There’s no prize for forcing a flight.

Know the three ways a dog flies

A dog gets to a destination one of three ways, and they aren’t equal.

In-cabin is for small dogs who fit inside a carrier, under the seat in front of you. This is the calmest option, because your dog stays with you the whole time.

Cargo, in a pressurized and temperature-controlled hold, is for dogs too large for the cabin. It is more stressful and carries more risk, especially in summer heat, and airlines apply breed and temperature limits.

Ground transport — driving yourself or hiring a professional pet mover — is the quiet third option people forget. For a large or anxious dog, it is often the least stressful of all.

A common question is whether a dog can simply ride on your lap. On US airlines, no. Your dog stays inside a closed carrier for the entire flight.

Handle the paperwork early, not at the gate

Paperwork is where calm trips come apart, so start weeks ahead.

For most flights you will need a health certificate, sometimes called a Certificate of Veterinary Inspection, signed by a licensed veterinarian confirming your dog is healthy and vaccinated. Timing is strict — many states and airlines want it dated within about ten days of travel, so book the vet visit close to your date, not months before. Keep the rabies vaccination current and bring the records.

The rules split by trip type. APHIS does not regulate pets you move yourself between US states; those requirements are set by the destination state. International travel is different — it runs through a USDA-accredited veterinarian, often with APHIS endorsement, on the destination country’s timeline. For dogs coming into the US, add the CDC Dog Import Form; the receipt is valid for six months.

One more distinction is worth knowing. Since a Department of Transportation rule that took effect in January 2021, only a dog individually trained to do work or tasks for a person with a disability counts as a service animal, and those handlers file a DOT Service Animal Air Transportation Form. Emotional support animals are no longer treated as service animals; on most airlines they now fly as pets, with pet fees and carrier rules.

Pick the carrier, then break it in

Buy the carrier weeks early and make it boring.

It has to fit under the seat, and your dog must be able to stand up, turn around, and lie down inside it. Measure your dog, then check your specific airline and aircraft, because the limits vary. Leave the carrier open at home with a blanket and a few treats inside. Feed some meals next to it. Take short car trips in it. By flight day it should feel like a familiar den, not a trap.

Get through the day itself

On travel day, keep it simple and steady.

Feed a light meal several hours before the flight, not right before — a full stomach on a bumpy plane helps no one. Walk your dog and allow plenty of potty time before security. At the checkpoint, you will carry your dog through the metal detector while the empty carrier goes through the scanner, so a well-fitted harness helps. Skip the sedative. A familiar blanket, a chew, and your own steady voice do more than a pill.

The bottom line

Flying with a dog rewards the boring work: the right dog for the trip, paperwork done early, a carrier that already feels like home, and a calm handler who left the sedatives in the cabinet. Get those four right, and the flight itself is usually the easy part.