Does the Petmate Soft-Sided Kennel Cab (Medium) fit Southwest Airlines?
Yes — the Petmate Soft-Sided Kennel Cab (Medium) (17 × 10 × 10 in) fits Southwest Airlines's 18 × 10.5 × 10 in under-seat limit, with 0" to spare on its tightest dimension.
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17 × 10 × 10 in is within 18 × 10.5 × 10 in — 1" spare on length, 0.5" on width, 0" on height. Tightest margin is 0", so measure before you fly.
Last verified 2026-09-24 · matched to the published Southwest Airlines limit. Every fit is against the published maximum; real under-seat space varies by aircraft (why).
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