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.
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| Carrier | Size | Fit | Buy |
|---|---|---|---|
 Sherpa Original Deluxe (Small) 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 (Small) 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 →
Citing this policy data? Go ahead — sourced from the official airline page, last verified 2026-08-14. Copy a ready-made reference: