In-cabin pet carriers that fit Air Transat
The carriers from our list that clear Air Transat's official 17 × 9.5 × 10 in under-seat limit — sorted best-fit first, with the ones that squeeze in when collapsed flagged.
Short answer: 2 of the 15 carriers we track fit Air Transat's 17 × 9.5 × 10 in limit, all only when collapsed or squeezed a little. 13 are too big.
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| Carrier | Size | Fit | Buy |
|---|---|---|---|
Sherpa Original Deluxe (Small) up to ~8 lb · max pet 13″ long × 7.5″ tall 15 × 10 × 8.5 in is 0.5" over on width against a 17 × 9.5 × 10 in limit, and height clears with 1.5" to spare. Soft sides compress, so this usually goes under the seat — but it is over the published figure, so measure yours and be ready for an agent to check. · collapsible/flex | 15 × 10 × 8.5 in | Squeezes — 0.5" over | See on Amazon → |
 Petmate Soft-Sided Kennel Cab (Medium) up to ~10 lb 17 × 10 × 10 in is 0.5" over on width against a 17 × 9.5 × 10 in limit, and height clears with 0" to spare. Soft sides compress, so this usually goes under the seat — but it is over the published figure, so measure yours and be ready for an agent to check. | 17 × 10 × 10 in | Squeezes — 0.5" over | See on Amazon → |
Every fit is against the published maximum; real under-seat space varies by aircraft (why). Full rules & fees: Air Transat pet policy → · how Air Transat ranks on fee and space →
Other airlines: airBaltic · Alaska Airlines · Alaska Horizon (Horizon Air) · Allegiant Air · American Airlines · American Eagle (regional, incl. Republic Airways)
Common questions
What size pet carrier does Air Transat allow in the cabin?
Air Transat's published limit for a carrier under the seat in front of you is 17 × 9.5 × 10 in. The carrier must be soft-sided. Weight limit: up to 8 kg (~17.6 lb) combined pet + carrier. We last checked this against Air Transat's own pet policy on 2026-09-05.
How many pet carriers fit Air Transat's limit?
2 of the 15 carriers we track fit Air Transat's 17 × 9.5 × 10 in limit, all only when collapsed or squeezed a little. 13 are too big.
Which carriers only fit Air Transat when collapsed or squeezed?
Sherpa Original Deluxe (Small), Petmate Soft-Sided Kennel Cab (Medium). Each is over the published size until folded or pressed down, so measure yours and expect it may be checked at the gate.
Which carriers are too big for Air Transat?
Sleepypod Atom, Bergan Comfort Carrier (Small), Mr. Peanut's Gold Series Mini (Low-Profile), Mr. Peanut's Gold Series Standard (Expandable), Sherpa Original Deluxe (Medium), Sleepypod Air, Diggs Passenger, ibiyaya JetPaw Expandable Backpack, Away The Pet Carrier, Petsfit (Medium) Expandable Soft-Sided, Frisco Premium Airline-Compliant Carrier, Sherpa Original Deluxe (Large), SturdiBag Pro (Large, Flexible Height). Each is over the 17 × 9.5 × 10 in limit.
How much does Air Transat charge for a pet in the cabin?
$50 within Canada or to the USA · $100 to Europe, Africa, or South destinations (Caribbean, Mexico, Peru, etc.) — per pet, per flight segment, paid up to 24h before departure. Confirm the current fee with Air Transat when you book.