Sherpa Original Deluxe
The carrier most frequent flyers end up with. A spring-wire frame along the top lets you push the end down to squeeze under a tighter seat, mesh on three sides for airflow, a…
Top picks
Our #1 pick in each carriers & travel guide
Kurgo Wander Hammock
A quilted hammock from an established dog-travel brand, with a water-resistant layer, seat anchors that tuck between the cushions, and seatbelt openings so a dog can be clipped in…
MidWest iCrate Double Door
The standard folding wire crate, sold in sizes from very small to giant breeds, with a divider panel so one crate works from puppy to adult. Two doors make placement easier and it…
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Buying guides
Guides in Carriers & Travel
Carriers & Travel
Airline-Approved Pet Carriers That Fit Under the Seat
The best in-cabin pet carriers for flying: real under-seat sizes, airline rules, soft vs. hard-sided (which fits under the seat) and 7 picks compared.
9 min read · Updated November 10, 2026
Carriers & Travel
Best Dog Car Seat Covers (2026): 5 Waterproof Hammocks & Covers Compared
Waterproof dog car seat covers and hammocks compared: fit, scratch resistance and seatbelt access. 5 picks, plus what keeps dogs safe.
5 min read · Updated November 10, 2026
Carriers & Travel
Dog Crate Size Guide (2026): How to Measure + 5 Best Crates by Type
How to measure your dog for a crate, a size chart by weight and breed (18 to 54 in), and the best crate for each type of dog.
5 min read · Updated November 1, 2026A carrier has to satisfy two parties: the airline’s under-seat dimension rules and your pet’s need to stand up, turn around, and breathe. Most complaints trace back to buying by “small/medium/large” instead of measuring the actual under-seat space of your airline and your pet’s height at the shoulder.
Our guides check published carrier dimensions against major U.S. airline limits, ventilation on all four sides, floor rigidity (a sagging soft floor scares cats), and whether zippers can be locked against an escape artist.
What we look at
- Airline fit: exact exterior dimensions vs. carrier’s stated compliance.
- Pet fit: internal height and length vs. your pet measured nose-to-tail-base and floor-to-shoulder.
- Ventilation: mesh on 3–4 sides, not just the ends.
- Structure: rigid or reinforced floor, roof that won’t collapse under a seat.
- Security: lockable zippers, safety tether, seatbelt pass-through.
- Type: soft tote, hard-sided crate, or backpack — and when each makes sense.
More dog gear: harnesses & leashes · beds.
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