Methodology
Every number on CabinPets traces to a source. Here's exactly how we build the data — and the one number we refuse to make up.
Airline rules
Each airline's carrier limit, fee, allowed species and booking rules come from that airline's official pet-policy page, linked on every airline page. Each airline’s page is read directly from that airline’s own site (or, where a live fetch is blocked, cross-checked against an authoritative aggregator) and stamped with the date it was actually checked — dates vary by airline because we re-check on different schedules, never a single blanket pass. We show a "Last verified" date on every page and re-check periodically, because fees and rules change. Spirit Airlines is deliberately excluded — it wound down operations on 2 May 2026.
Carrier dimensions
Every carrier's size is the manufacturer's published external dimension, cited to the product page. Our carrier data carries no prices — prices change, and our Amazon links take you to the current listing. The exceptions are the small ad marked Sponsored and the price line under a carrier's buy button: both show Amazon's own price (and, when Amazon lists a reference price, the saving against it), read from Amazon's product API, with the time it was read. Nothing is typed in by us.
How "fits" is computed
For each carrier × airline we check: (1) height — the carrier's height must be ≤ the airline's published height (height doesn't rotate); (2) footprint — the carrier's length and width must fit the airline's length and width, in either orientation. A carrier that's over height but has a flexible-height or collapsible design is marked "check / flexes" rather than a hard no — because it can compress — but this note never changes the strict computed verdict. We stay conservative on purpose.
The one number we won't fabricate
We never publish a per-aircraft under-seat clearance figure, because no airline authoritatively publishes one (Air Canada's per-aircraft carrier limits are the closest, and we cite them). Community-reported under-seat measurements are anecdotes, not specs — we never use them in the matcher. See the under-seat truth.
Carriers that clear the most airlines
Ranked by how many of the 58 airlines with a published cabin limit each one clears at its published size — the same computation behind every fit verdict on this site.
Affiliate link — we may earn a small commission at no extra cost to you. It never changes our specs or which carriers we list.
Mr. Peanut's Gold Series Mini (Low-Profile)Petmate Soft-Sided Kennel Cab (Medium)Mr. Peanut's Gold Series Standard (Expandable)Spotted a number that's out of date? Tell us and we'll re-verify.