Flying-with-pets guides

The questions around the carrier decision, answered straight — official figures cited, nothing invented.

The in-cabin pet travel checklist — what to book, buy and pack, with the counts computed from every policy we track.
How to measure your pet — the two measurements and the stand-and-turn rule.
Best carriers, ranked by fit — pure geometry against 77 airlines' limits.
In-cabin pet fees by airline — every US carrier compared.
How much does it cost to fly a cat or dog? — the answer up front, then fee, carrier size and weight by airline, sortable.
Airline pet weight limits for the cabin — which airlines have no weight limit, which cap it, and the roomiest carrier that fits each.
Flying with a pet for Thanksgiving or Christmas — what to reserve first, the airlines that cap pets per flight, and which carriers fit.
The under-seat truth — why the published size is optimistic.
In-cabin vs cargo — the honest decision for borderline pets.
Two pets in one carrier — which airlines allow it, in their own words.
Minimum age to fly a puppy or kitten — each airline's published minimum, cited.
Airline pet policy changes — what changed and when, quoted from each airline's own page, plus our own corrections.
The cold-weather embargo and in-cabin pets — which airlines' winter temperature rules reach the cabin (checked at American, Delta, United, Alaska and Southwest).

Compare two carriers

Each comparison checks both carriers against every airline's published under-seat limit, side by side.

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.

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