Diggs Passenger — dimensions & which airlines it fits
Diggs Passenger: 17 × 12 × 10.5 in external. Structured, well-ventilated design; sits within the 18×11×11 airlines but its 10.5" height rules out the 8.5" airlines.
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Specs
| External size (L×W×H) | 17 × 12 × 10.5 in |
| Type | soft-sided |
Dimensions from the manufacturer product page · verified 2026-07-23
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Which airlines does the Diggs Passenger 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 |
|---|---|---|
| Frontier Airlines | 18 × 14 × 11 in | Fits 17 × 12 × 10.5 in is within 18 × 14 × 11 in — 1" spare on length, 2" on width, 0.5" on height. Tightest margin is 0.5", so measure before you fly. |
| Allegiant Air | 18 × 12 × 11 in | Fits 17 × 12 × 10.5 in is within 18 × 12 × 11 in — 1" spare on length, 0" on width, 0.5" on height. Tightest margin is 0", so measure before you fly. |
| Porter Airlines | 21.5 × 15.5 × 10.5 in | Fits 17 × 12 × 10.5 in is within 21.5 × 15.5 × 10.5 in — 4.5" spare on length, 3.5" on width, 0" on height. Tightest margin is 0", so measure before you fly. |
| JSX | 17 × 13 × 11 in | Fits 17 × 12 × 10.5 in is within 17 × 13 × 11 in — 0" spare on length, 1" on width, 0.5" on height. Tightest margin is 0", so measure before you fly. |
| JetBlue | 17 × 12.5 × 8.5 in | Too tall (10.5" > 8.5") 10.5" tall exceeds the 8.5" limit by 2" and this carrier doesn't compress. |
| Southwest Airlines | 18.5 × 13.5 × 8.5 in | Too tall (10.5" > 8.5") 10.5" tall exceeds the 8.5" limit by 2" and this carrier doesn't compress. |
| Air Canada | 17 × 16 × 8 in | Too tall (10.5" > 8") 10.5" tall exceeds the 8" limit by 2.5" and this carrier doesn't compress. |
| Sun Country Airlines | 17 × 12 × 9 in | Too tall (10.5" > 9") 10.5" tall exceeds the 9" limit by 1.5" and this carrier doesn't compress. |
| Delta Air Lines | 18 × 11 × 11 in | Too big 17 × 12 × 10.5 in is over the 18 × 11 × 11 in limit. |
| American Airlines | 18 × 11 × 11 in | Too big 17 × 12 × 10.5 in is over the 18 × 11 × 11 in limit. |
| United Airlines | 18 × 11 × 11 in | Too big 17 × 12 × 10.5 in is over the 18 × 11 × 11 in limit. |
| Alaska Airlines | 17 × 11 × 9.5 in | Too big 17 × 12 × 10.5 in is over the 17 × 11 × 9.5 in limit. |
| Hawaiian Airlines | 17 × 11 × 9.5 in | Too big 17 × 12 × 10.5 in is over the 17 × 11 × 9.5 in limit. |
| Breeze Airways | 17 × 8 × 13 in | Too big 17 × 12 × 10.5 in is over the 17 × 8 × 13 in limit. |
| WestJet | 16 × 10 × 8.5 in | Too big 17 × 12 × 10.5 in is over the 16 × 10 × 8.5 in limit. |
| Avelo Airlines | 17 × 9 × 13 in | Too big 17 × 12 × 10.5 in is over the 17 × 9 × 13 in limit. |
| Air Transat | 17 × 9.5 × 10 in | Too big 17 × 12 × 10.5 in is over the 17 × 9.5 × 10 in limit. |
Compared with
Diggs Passenger vs Away The Pet Carrier Diggs Passenger vs Sleepypod Air Diggs Passenger vs SturdiBag Pro (Large, Flexible Height)
Not sure this is the one? See the best carriers ranked by how many airlines they fit · compare all: carriers · fit for a specific airline: Delta · JetBlue · American · United · Southwest
Common questions
What are the dimensions of the Diggs Passenger?
Its published external size is 17 × 12 × 10.5 in. Source: the manufacturer's product page.
Which airlines does the Diggs Passenger fit?
Against published limits it fits Frontier Airlines, Allegiant Air, Porter Airlines, JSX. Real under-seat space varies by aircraft, so confirm for your flight.