In-cabin pet carriers that fit Viva Aerobus
The carriers from our list that clear Viva Aerobus' official 17.3 × 13.8 × 8.3 in under-seat limit — sorted best-fit first, with the ones that squeeze in when collapsed flagged.
Short answer: 3 of the 15 carriers we track fit Viva Aerobus' 17.3 × 13.8 × 8.3 in limit, all only when collapsed or squeezed a little. 12 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 8.5" tall vs a 8.3" limit — 0.2" over, but the flexible-height top compresses down. Verify it squeezes under your actual seat. · collapsible/flex | 15 × 10 × 8.5 in | Flexes — 0.2" over | See on Amazon → |
 Mr. Peanut's Gold Series Mini (Low-Profile) up to ~15 lb 9" tall vs a 8.3" limit — 0.7" over, but the flexible-height top compresses down. Verify it squeezes under your actual seat. · collapsible/flex | 17 × 11 × 9 in | Flexes — 0.7" over | See on Amazon → |
Sherpa Original Deluxe (Medium) up to ~16 lb · max pet 16″ long × 9.5″ tall 10.5" tall vs a 8.3" limit — 2.2" over, but the flexible-height top compresses down. Verify it squeezes under your actual seat. · collapsible/flex | 17 × 11 × 10.5 in | Flexes — 2.2" over | See on Amazon → |
Every fit is against the published maximum; real under-seat space varies by aircraft (why). Full rules & fees: Viva Aerobus pet policy → · how Viva Aerobus ranks on fee and space →
Other airlines: Volaris · Vueling · WestJet · Aegean Airlines · Aeroméxico · Air Canada
Common questions
What size pet carrier does Viva Aerobus allow in the cabin?
Viva Aerobus' published limit for a carrier under the seat in front of you is 17.3 × 13.8 × 8.3 in. Weight limit: Max 12 kg (pet + carrier). We last checked this against Viva Aerobus' own pet policy on 2026-10-03.
How many pet carriers fit Viva Aerobus' limit?
3 of the 15 carriers we track fit Viva Aerobus' 17.3 × 13.8 × 8.3 in limit, all only when collapsed or squeezed a little. 12 are too big.
Which carriers only fit Viva Aerobus when collapsed or squeezed?
Sherpa Original Deluxe (Small), Mr. Peanut's Gold Series Mini (Low-Profile), Sherpa Original Deluxe (Medium). Each 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 Viva Aerobus?
Petmate Soft-Sided Kennel Cab (Medium), Diggs Passenger, Sleepypod Atom, Petsfit (Medium) Expandable Soft-Sided, Bergan Comfort Carrier (Small), Mr. Peanut's Gold Series Standard (Expandable), Sleepypod Air, 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 17.3 × 13.8 × 8.3 in limit.