In-cabin pet carriers that fit Copa Airlines
The carriers from our list that clear Copa Airlines' official 18 × 11 × 11 in under-seat limit — sorted best-fit first, with the ones that squeeze in when collapsed flagged.
Short answer: 10 of the 15 carriers we track fit Copa Airlines' 18 × 11 × 11 in limit: 3 with room to spare on every side, 6 with no room to spare on at least one side and 1 only when collapsed or squeezed a little. 5 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 18 × 11 × 11 in — 3" spare on length, 1" on width, 2.5" on height. · collapsible/flex | 15 × 10 × 8.5 in | Fits | See on Amazon → |
 Petmate Soft-Sided Kennel Cab (Medium) up to ~10 lb 17 × 10 × 10 in is within 18 × 11 × 11 in — 1" spare on length, 1" on width, 1" on height. | 17 × 10 × 10 in | Fits | See on Amazon → |
Sleepypod Atom up to ~12 lb 17 × 8.5 × 10.5 in is within 18 × 11 × 11 in — 1" spare on length, 2.5" on width, 0.5" on height. Tightest margin is 0.5", so measure before you fly. | 17 × 8.5 × 10.5 in | Fits | See on Amazon → |
Mr. Peanut's Gold Series Mini (Low-Profile) up to ~15 lb 17 × 11 × 9 in is within 18 × 11 × 11 in — 1" spare on length, 0" 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 → |
Mr. Peanut's Gold Series Standard (Expandable) up to ~20 lb · over Copa Airlines's 22 lb limit once the bag is counted 18 × 11 × 10 in is within 18 × 11 × 11 in — 0" spare on length, 0" on width, 1" on height. Tightest margin is 0", so measure before you fly. · collapsible/flex | 18 × 11 × 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 18 × 11 × 11 in — 1" spare on length, 0" 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 → |
Petsfit (Medium) Expandable Soft-Sided up to ~13 lb 17 × 11 × 11 in is within 18 × 11 × 11 in — 1" spare on length, 0" 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 18 × 11 × 11 in — 2" spare on length, 3" on width, 0" on height. Tightest margin is 0", so measure before you fly. | 16 × 8 × 11 in | Exact fit | See on Amazon → |
Frisco Premium Airline-Compliant Carrier up to ~22 lb · over Copa Airlines's 22 lb limit once the bag is counted 18 × 11 × 11 in is within 18 × 11 × 11 in — 0" spare on length, 0" on width, 0" on height. Tightest margin is 0", so measure before you fly. | 18 × 11 × 11 in | Exact fit | Search Amazon → |
Sleepypod Air up to ~18 lb · over Copa Airlines's 22 lb limit once the bag is counted 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: Copa Airlines pet policy → · how Copa Airlines ranks on fee and space →
Other airlines: Croatia Airlines · Delta Air Lines · Discover Airlines · Edelweiss · EL AL Israel Airlines · Etihad Airways
Common questions
What size pet carrier does Copa Airlines allow in the cabin?
Copa Airlines' published limit for a carrier under the seat in front of you is 18 × 11 × 11 in. The carrier must be soft-sided. Weight limit: Max 10 kg (pet + carrier). We last checked this against Copa Airlines' own pet policy on 2026-10-03.
How many pet carriers fit Copa Airlines' limit?
10 of the 15 carriers we track fit Copa Airlines' 18 × 11 × 11 in limit: 3 with room to spare on every side, 6 with no room to spare on at least one side and 1 only when collapsed or squeezed a little. 5 are too big.
Which carriers only fit Copa Airlines 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 Copa Airlines?
Diggs Passenger, ibiyaya JetPaw Expandable Backpack, Away The Pet Carrier, Sherpa Original Deluxe (Large), SturdiBag Pro (Large, Flexible Height). Each is over the 18 × 11 × 11 in limit.