Sherpa Original Deluxe (Small) — dimensions & which airlines it fits
Sherpa Original Deluxe (Small): 15 × 10 × 8.5 in external, up to ~8 lb. Naturally short (8.5") and soft — one of the few that already clears the 8.5" airlines (Southwest, JetBlue). Part of Sherpa's Guaranteed On Board® program.
Specs
| External size (L×W×H) | 15 × 10 × 8.5 in |
| Type | soft-sided · flexible height |
| Pet weight | up to ~8 lb |
Dimensions from the manufacturer product page · verified 2026-07-03
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Which airlines does the Sherpa Original Deluxe (Small) fit?
Compared against each airline's published under-seat limit (height strict; footprint may rotate). Green = within the published size; amber = fits only when collapsed / flexed; grey = over.
| Airline | Its limit | This carrier |
|---|---|---|
| Delta Air Lines | 18 × 11 × 11 in | Fits |
| JetBlue | 17 × 12.5 × 8.5 in | Fits |
| American Airlines | 18 × 11 × 11 in | Fits |
| United Airlines | 18 × 11 × 11 in | Fits |
| Southwest Airlines | 18.5 × 13.5 × 8.5 in | Fits |
| Alaska Airlines | 17 × 11 × 9.5 in | Fits |
| Frontier Airlines | 18 × 14 × 11 in | Fits |
| Air Canada | 17 × 16 × 8 in | Flexes — check height |
⚠️ "Fits" here means it's within the published maximum — the actual space under your seat varies by aircraft. See why →
Compare carriers: all carriers · fit for a specific airline: Delta · JetBlue · American · United · Southwest