In-cabin pet carriers that fit Finnair
The carriers from our list that clear Finnair's official 21.7 × 15.7 × 7.9 in under-seat limit — sorted best-fit first, with the ones that squeeze in when collapsed flagged.
Short answer: 6 of the 15 carriers we track fit Finnair's 21.7 × 15.7 × 7.9 in limit, all only when collapsed or squeezed a little. 9 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 7.9" limit — 0.6" over, but the flexible-height top compresses down. Verify it squeezes under your actual seat. · collapsible/flex | 15 × 10 × 8.5 in | Flexes — 0.6" over | See on Amazon → |
Mr. Peanut's Gold Series Mini (Low-Profile) up to ~15 lb · over Finnair's 17.6 lb limit once the bag is counted 9" tall vs a 7.9" limit — 1.1" over, but the flexible-height top compresses down. Verify it squeezes under your actual seat. · collapsible/flex | 17 × 11 × 9 in | Flexes — 1.1" over | Not available on Amazon right now |
Mr. Peanut's Gold Series Standard (Expandable) up to ~20 lb · over Finnair's 17.6 lb limit once the bag is counted 10" tall vs a 7.9" limit — 2.1" over, but the flexible-height top compresses down. Verify it squeezes under your actual seat. · collapsible/flex | 18 × 11 × 10 in | Flexes — 2.1" over | Not available on Amazon right nowIn stock and fits the same airlines: Petmate Soft-Sided Kennel Cab (Medium) |
Sherpa Original Deluxe (Medium) up to ~16 lb · max pet 16″ long × 9.5″ tall · over Finnair's 17.6 lb limit once the bag is counted 10.5" tall vs a 7.9" limit — 2.6" over, but the flexible-height top compresses down. Verify it squeezes under your actual seat. · collapsible/flex | 17 × 11 × 10.5 in | Flexes — 2.6" over | See on Amazon → |
Sherpa Original Deluxe (Large) up to ~22 lb · max pet 18″ long × 10.5″ tall · over Finnair's 17.6 lb limit once the bag is counted 11.5" tall vs a 7.9" limit — 3.6" over, but the flexible-height top compresses down. Verify it squeezes under your actual seat. · collapsible/flex | 19 × 11.75 × 11.5 in | Flexes — 3.6" over | See on Amazon → |
SturdiBag Pro (Large, Flexible Height) pet size not published 11.5" tall vs a 7.9" limit — 3.6" over, but the flexible-height top compresses down. Verify it squeezes under your actual seat. · collapsible/flex | 18 × 11.5 × 11.5 in | Flexes — 3.6" over | Not available on Amazon right nowIn stock and fits the same airlines: Petmate Soft-Sided Kennel Cab (Medium) |
Every fit is against the published maximum; real under-seat space varies by aircraft (why). Full rules & fees: Finnair pet policy → · how Finnair ranks on fee and space →
Other airlines: Frontier Airlines · GOL Linhas Aéreas · Hawaiian Airlines · Iberia · ITA Airways · JetBlue
Common questions
What size pet carrier does Finnair allow in the cabin?
Finnair's published limit for a carrier under the seat in front of you is 21.7 × 15.7 × 7.9 in. Weight limit: 8 kg (17.6 lb) total for the carrier plus up to two pets. We last checked this against Finnair's own pet policy on 2026-08-25.
How many pet carriers fit Finnair's limit?
6 of the 15 carriers we track fit Finnair's 21.7 × 15.7 × 7.9 in limit, all only when collapsed or squeezed a little. 9 are too big.
Which carriers only fit Finnair when collapsed or squeezed?
Sherpa Original Deluxe (Small), Mr. Peanut's Gold Series Mini (Low-Profile), Mr. Peanut's Gold Series Standard (Expandable), Sherpa Original Deluxe (Medium), Sherpa Original Deluxe (Large), SturdiBag Pro (Large, Flexible Height). 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 Finnair?
Petmate Soft-Sided Kennel Cab (Medium), Diggs Passenger, ibiyaya JetPaw Expandable Backpack, Sleepypod Atom, Away The Pet Carrier, Petsfit (Medium) Expandable Soft-Sided, Bergan Comfort Carrier (Small), Frisco Premium Airline-Compliant Carrier, Sleepypod Air. Each is over the 21.7 × 15.7 × 7.9 in limit.
How much does Finnair charge for a pet in the cabin?
Within Europe: €60 or 7,800 Avios (7 days or more before departure) / €65 or 8,500 Avios (6 days or less). Intercontinental: €120/$130 or 15,800 Avios (7 days or more) / €130/$140 or 17,100 Avios (6 days or less). Charged per pet carrier, per journey. Confirm the current fee with Finnair when you book.
How many pets does Finnair allow in the cabin?
Maximum one pet carrier per customer, with up to two pets in that carrier; Finnair usually accepts only two customers with pets in cabin per flight. Confirm the current limit with Finnair when you book.
How do I book a pet in the cabin on Finnair?
Buy online in the Travel extras step when booking, or add later via Manage booking — must be done before check-in opens; Business Class short-haul, Premium Economy long-haul and Jettime-operated flights require contacting customer service. Last checked 2026-08-25.