Published soft-sided in-cabin carrier limit: 16 × 10 × 8.5 in. Cabin Pet Fit compares tracked carrier dimensions against this cited rule and keeps the caveats visible.
Rule snapshot
Published rule
Size restrictions (per kennel) beneath the seat: 41 cm L x 21.5 cm H x 25.4 cm W (16 in L x 8.5 in H x 10 in W).
Source box
Accessed 2026-07-10. Review status: approved. Rule reviewed 2026-07-10. Cabin Pet Fit is not affiliated with WestJet.
Recommendations
Shown only when the airline limit is public-ready. Each card keeps the reason, the fit gauge, and the evidence note together.
Sleepypod Atom Carrier is shown with caution because its listed dimensions (17 × 8.5 × 10.5 in) are close to this airline’s published carrier limit; packing shape, bulge, handles, and sizer orientation may matter. It also covers the neutral preference lane.
Generated from product dimension source and airline rule source in the fit matrix. This is not a fit guarantee.
Fit matrix
| Carrier | Listed dimensions | Status | Caveat |
|---|---|---|---|
| Sherpa Original Deluxe Carrier (Medium) | 17 × 11 × 10.5 in | Exceeds limit | Published carrier dimensions exceed the airline's published limit. |
| Sherpa Forma Frame Carrier (Medium) | 19.7 × 9.8 × 9.8 in | Exceeds limit | Published carrier dimensions exceed the airline's published limit. |
| Petmate E-Z Load Two Door Kennel (19 in) | 19 × 10 × 7.5 in | Exceeds limit | Published carrier dimensions exceed the airline's published limit. |
| Sleepypod Air In-Cabin Carrier | 22 × 10.5 × 10.5 in | Exceeds limit | Published carrier dimensions exceed the airline's published limit. |
| Sleepypod Atom Carrier | 17 × 8.5 × 10.5 in | Tight / risky | One or more dimensions are close to or over the airline's published limit; soft-sided compression and under-seat variation by aircraft may matter. |
| Away The Pet Carrier | 18.7 × 10.8 × 10.75 in | Exceeds limit | Published carrier dimensions exceed the airline's published limit. |
| Wild One Travel Carrier | 17.5 × 11 × 10 in | Exceeds limit | Published carrier dimensions exceed the airline's published limit. |
| Mr. Peanut's Aspen Series Backpack Carrier | 18 × 14 × 9 in | Exceeds limit | Published carrier dimensions exceed the airline's published limit. |
| Mr. Peanut's Tahoe Series Expandable Backpack Carrier | 17 × 14.4 × 9 in | Exceeds limit | Published carrier dimensions exceed the airline's published limit. |
| Roverlund Out-of-Office Carrier (Large) | 18 × 11.5 × 11.5 in | Exceeds limit | Published carrier dimensions exceed the airline's published limit. |
| Sturdi SturdiBag Pro 2.0 (Large) | 18 × 11.5 × 11.5 in | Exceeds limit | Published carrier dimensions exceed the airline's published limit. |
| EliteField 3-Door Soft-Sided Carrier (Medium) | 17 × 9 × 12 in | Exceeds limit | Published carrier dimensions exceed the airline's published limit. |
| Amazon Basics Soft-Sided Mesh Carrier (Medium) | 16.5 × 10.6 × 11 in | Exceeds limit | Published carrier dimensions exceed the airline's published limit. |
| Henkelion Soft-Sided Collapsible Carrier (Small/Medium) | 17 × 11 × 11 in | Exceeds limit | Published carrier dimensions exceed the airline's published limit. |
WestJet's cited pet policy lists a soft-sided in-cabin carrier limit of 16 × 10 × 8.5 in as of 2026-07-10. Cabin Pet Fit compares carrier dimensions against that published limit; gate acceptance is not guaranteed.
The cited record lists $50-59 within Canada/US; $100-118 international, both directions. Fees change; always confirm on the airline's official pet page before you book.
No. A match means the carrier’s listed external dimensions compare inside the published limit. Gate agents, aircraft under-seat space, a rigid frame, and how full the carrier is can still affect real-world fit. We also do not advise on your pet’s health or fitness to fly.
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