In-cabin pet carriers that fit WestJet
The carriers from our list that clear WestJet's official 16 × 10 × 8.5 in under-seat limit — sorted best-fit first, with the ones that squeeze in when collapsed flagged.
Short answer: 1 of the 15 carriers we track fits WestJet's 16 × 10 × 8.5 in limit, with no room to spare on at least one side. 14 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 within 16 × 10 × 8.5 in — 1" spare on length, 0" on width, 0" on height. Tightest margin is 0", so measure before you fly. · collapsible/flex | 15 × 10 × 8.5 in | Exact fit | See on Amazon → |
Every fit is against the published maximum; real under-seat space varies by aircraft (why). Full rules & fees: WestJet pet policy → · how WestJet ranks on fee and space →
Other airlines: Aegean Airlines · Aeroméxico · Air Canada · Air Europa · Air France · Air Transat
Common questions
What size pet carrier does WestJet allow in the cabin?
WestJet's published limit for a carrier under the seat in front of you is 16 × 10 × 8.5 in. The carrier must be soft-sided. Weight limit: not published. We last checked this against WestJet's own pet policy on 2026-09-05.
How many pet carriers fit WestJet's limit?
1 of the 15 carriers we track fits WestJet's 16 × 10 × 8.5 in limit, with no room to spare on at least one side. 14 are too big.
Which carriers are too big for WestJet?
Bergan Comfort Carrier (Small), Mr. Peanut's Gold Series Mini (Low-Profile), Mr. Peanut's Gold Series Standard (Expandable), Petmate Soft-Sided Kennel Cab (Medium), Sherpa Original Deluxe (Medium), Sleepypod Air, Diggs Passenger, ibiyaya JetPaw Expandable Backpack, Sleepypod Atom, 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 16 × 10 × 8.5 in limit.
How much does WestJet charge for a pet in the cabin?
$50–$59 within Canada and the U.S.; $100–$118 outside Canada and the U.S. (pet kennel fee, as published on WestJet's fees page; applies each direction). Confirm the current fee with WestJet when you book.