In-cabin pet carriers that fit JSX
The carriers from our list that clear JSX's official 17 × 13 × 11 in under-seat limit — sorted best-fit first, with the ones that squeeze in when collapsed flagged.
Short answer: 9 of the 15 carriers we track fit JSX's 17 × 13 × 11 in limit: 1 with room to spare on every side, 7 with no room to spare on at least one side and 1 only when collapsed or squeezed a little. 6 are too big.
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| Carrier | Size | Fit | Buy |
|---|---|---|---|
Sherpa Original Deluxe (Small) up to ~8 lb · max pet 13″ long × 7.5″ tall 15 × 10 × 8.5 in is within 17 × 13 × 11 in — 2" spare on length, 3" on width, 2.5" on height. · collapsible/flex | 15 × 10 × 8.5 in | Fits | See on Amazon → |
 Mr. Peanut's Gold Series Mini (Low-Profile) up to ~15 lb 17 × 11 × 9 in is within 17 × 13 × 11 in — 0" spare on length, 2" on width, 2" on height. Tightest margin is 0", so measure before you fly. · collapsible/flex | 17 × 11 × 9 in | Exact fit | See on Amazon → |
Petmate Soft-Sided Kennel Cab (Medium) up to ~10 lb 17 × 10 × 10 in is within 17 × 13 × 11 in — 0" spare on length, 3" on width, 1" on height. Tightest margin is 0", so measure before you fly. | 17 × 10 × 10 in | Exact fit | See on Amazon → |
Sherpa Original Deluxe (Medium) up to ~16 lb · max pet 16″ long × 9.5″ tall 17 × 11 × 10.5 in is within 17 × 13 × 11 in — 0" spare on length, 2" on width, 0.5" on height. Tightest margin is 0", so measure before you fly. · collapsible/flex | 17 × 11 × 10.5 in | Exact fit | See on Amazon → |
Diggs Passenger pet size not published · Diggs discontinued this carrier — link goes to similar carriers 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. | 17 × 12 × 10.5 in | Exact fit | Search Amazon → |
Sleepypod Atom up to ~12 lb 17 × 8.5 × 10.5 in is within 17 × 13 × 11 in — 0" spare on length, 4.5" on width, 0.5" on height. Tightest margin is 0", so measure before you fly. | 17 × 8.5 × 10.5 in | Exact fit | See on Amazon → |
Petsfit (Medium) Expandable Soft-Sided up to ~13 lb 17 × 11 × 11 in is within 17 × 13 × 11 in — 0" spare on length, 2" on width, 0" on height. Tightest margin is 0", so measure before you fly. | 17 × 11 × 11 in | Exact fit | See on Amazon → |
Bergan Comfort Carrier (Small) pet size not published 16 × 8 × 11 in is within 17 × 13 × 11 in — 1" spare on length, 5" on width, 0" on height. Tightest margin is 0", so measure before you fly. | 16 × 8 × 11 in | Exact fit | See on Amazon → |
Sleepypod Air up to ~18 lb Collapses from 22" to ~16" long, which fits — height 10.5" is within 11". · collapsible/flex | 22 × 10.5 × 10.5 in | Fits collapsed | See on Amazon → |
Every fit is against the published maximum; real under-seat space varies by aircraft (why). Full rules & fees: JSX pet policy → · how JSX ranks on fee and space →
Other airlines: KLM Royal Dutch Airlines · Korean Air · LATAM Airlines · LOT Polish Airlines · Lufthansa · Mokulele Airlines
Common questions
What size pet carrier does JSX allow in the cabin?
JSX's published limit for a carrier under the seat in front of you is 17 × 13 × 11 in. Weight limit: under 30 lb (pet only; a separate 80 lb leashed-floor-space program applies to larger dogs, not tracked here). We last checked this against JSX's own pet policy on 2026-09-05.
How many pet carriers fit JSX's limit?
9 of the 15 carriers we track fit JSX's 17 × 13 × 11 in limit: 1 with room to spare on every side, 7 with no room to spare on at least one side and 1 only when collapsed or squeezed a little. 6 are too big.
Which carriers only fit JSX when collapsed or squeezed?
Sleepypod Air. It is over the published size until folded or pressed down, so measure yours and expect it may be checked at the gate.
Which carriers are too big for JSX?
Mr. Peanut's Gold Series Standard (Expandable), ibiyaya JetPaw Expandable Backpack, Away The Pet Carrier, Frisco Premium Airline-Compliant Carrier, Sherpa Original Deluxe (Large), SturdiBag Pro (Large, Flexible Height). Each is over the 17 × 13 × 11 in limit.
How much does JSX charge for a pet in the cabin?
$100 per one way. Confirm the current fee with JSX when you book.