How to Choose a Pet Carrier for Flying: A Practical Buyer's Guide

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The carrier is the most important piece of gear when you fly with a small dog or a cat. Pick the wrong one and you could be turned away at check-in, or end up with a stressed pet and a sore shoulder. The good news is that choosing well is simple once you know what to check.

1. Start with your airline's rules, not the carrier

Airlines set their own limits for carrier size, pet weight, and how many pets are allowed on each flight. These rules differ between airlines and sometimes between routes, so check your airline's pet policy before you buy anything, and confirm again before you travel. Write down the maximum carrier dimensions and any weight limit that includes your pet and the carrier together.

2. Measure your pet

A good carrier lets your pet stand up, turn around and lie down comfortably. Measure your pet's height while standing, and length from nose to base of tail. Add a little room, then compare those numbers with the carrier's interior size, not just its outer size. A carrier that is too tight is stressful, and one that is too big may not fit under the seat.

3. Choose the right style

• Soft-sided carriers are flexible, so they tend to fit under an airplane seat more easily. They are also lighter and easier to carry through an airport.
• Hard-sided carriers are sturdier and easier to clean, but they do not squeeze under a seat the way soft ones can.

For most small dogs and cats flying in the cabin, a soft-sided carrier is the practical choice. Look for a model that is clearly designed to fit under a seat.

4. Check the features that matter

• Ventilation: mesh panels on more than one side help airflow.
• Secure zippers: look for lockable or double zippers so your pet cannot push their way out.
• Solid base: a firm, flat bottom keeps the carrier stable and comfortable.
• Comfortable straps: a padded shoulder strap helps when you are walking through a long terminal.
• Easy-clean lining: accidents happen, so a washable pad is useful.

5. Get your pet used to it before the trip

Leave the carrier open at home for a few days with a blanket and a treat inside. Then practice short periods with the door closed, and short trips around the house or neighbourhood. A pet who sees the carrier as a safe space will travel far more calmly than one who meets it for the first time at the airport.

A carrier option to look at

If you are comparing options, take a look at our Soft Pet Carrier for Cats & Small Dogs. It measures 17.5 x 11 x 11 inches. Compare those dimensions against your airline's limits and your pet's size before ordering, since requirements vary.

Before you book

• Check your airline's pet policy and any health document requirements for your destination.
• Book your pet's spot early if your airline limits pets per flight.
• Arrange a vet check if the airline or destination requires one.
• Stay connected on the road with a travel eSIM so you can reach your vet or airline without roaming fees.

For a full walkthrough, see our step-by-step checklist for flying with a dog, and visit the Pet Travel Hub for more guides and gear.