Which in-cabin pet carrier fits your airline?
Pick your airline and instantly see which carriers fit its official published under-seat limit — with the short-height airlines (Southwest, JetBlue, Air Canada) and collapsible carriers flagged for you. No listicle to scroll; we do the math.
⚠️ The honest catch: an airline's published size is the biggest carrier that fits most of its fleet — the actual space under your seat varies by aircraft (a window seat with an entertainment box has less; a bulkhead has none). We never invent a per-aircraft number. Read why the website number is optimistic →
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All airline policies
8 airlines · limits, fees, rules — cited
All carriers
11 carriers · published external dimensions
The under-seat truth
Why 18×11×11 doesn't mean 11" of real height
Fits Southwest (8.5")
The short-height carriers that actually work