Airline-approved pet carriers, ranked by how many airlines they actually fit
Review sites rank carriers by looks and padding. We rank them by the number that decides your flight: how many of 58 airlines' published under-seat limits each carrier actually clears. The Sherpa Original Deluxe (Small) leads — within the published size at 41 of 58 airlines with a published cabin limit.
Top picks
Affiliate link — we may earn a small commission at no extra cost to you. It never changes our specs or which carriers we list.
No new copies on Amazon right nowIn stock instead: Mr. Peanut's Gold Series Mini (Low-Profile) on Amazon →It fits 31 of the 41 airlines this one fits. See its page
Full ranking — all 15 carriers
| # | Carrier | Fits outright | Which airlines | Buy |
|---|---|---|---|---|
| 1 | Sherpa Original Deluxe (Small) 15 × 10 × 8.5 in · up to ~8 lb | 41 of 58 +13 flex | Air Europa, Air France, airBaltic, Alaska Airlines, Alaska Horizon (Horizon Air), Allegiant Air, American Airlines, American Eagle (regional, incl. Republic Airways), Austrian Airlines, Avianca, Brussels Airlines, Cape Air, Condor, Contour Airlines, Copa Airlines, Delta Air Lines, Discover Airlines, Edelweiss, Etihad Airways, Eurowings, Frontier Airlines, GOL Linhas Aéreas, Hawaiian Airlines, Iberia, ITA Airways, JetBlue, JSX, KLM Royal Dutch Airlines, LATAM Airlines, Lufthansa, Pegasus Airlines, Porter Airlines, Saudia, Southwest Airlines, Sun Country Airlines, Swiss International Air Lines, TAP Air Portugal, Transavia, Turkish Airlines, United Airlines, WestJet | No new copies on Amazon right now |
| 2 | Mr. Peanut's Gold Series Mini (Low-Profile) 17 × 11 × 9 in · up to ~15 lb | 31 of 58 +12 flex | Air France, airBaltic, Alaska Airlines, Alaska Horizon (Horizon Air), Allegiant Air, American Airlines, American Eagle (regional, incl. Republic Airways), Austrian Airlines, Avianca, Brussels Airlines, Condor, Contour Airlines, Copa Airlines, Delta Air Lines, Discover Airlines, Edelweiss, Eurowings, Frontier Airlines, Hawaiian Airlines, Iberia, ITA Airways, JSX, KLM Royal Dutch Airlines, Lufthansa, Pegasus Airlines, Porter Airlines, Saudia, Sun Country Airlines, Swiss International Air Lines, TAP Air Portugal, United Airlines | Details |
| 3 | Petmate Soft-Sided Kennel Cab (Medium) 17 × 10 × 10 in · up to ~10 lb | 14 of 58 +1 flex | Allegiant Air, American Airlines, American Eagle (regional, incl. Republic Airways), Avianca, Contour Airlines, Copa Airlines, Delta Air Lines, Frontier Airlines, JSX, Pegasus Airlines, Porter Airlines, Saudia, Southwest Airlines, United Airlines | Details |
| 4 | Mr. Peanut's Gold Series Standard (Expandable) 18 × 11 × 10 in · up to ~20 lb | 12 of 58 +14 flex | Allegiant Air, American Airlines, American Eagle (regional, incl. Republic Airways), Avianca, Contour Airlines, Copa Airlines, Delta Air Lines, Frontier Airlines, Pegasus Airlines, Porter Airlines, Saudia, United Airlines | No new copies on Amazon right nowDetails |
| 5 | Sleepypod Atom 17 × 8.5 × 10.5 in · up to ~12 lb | 12 of 58 +1 flex | Allegiant Air, American Airlines, American Eagle (regional, incl. Republic Airways), Avelo Airlines, Copa Airlines, Delta Air Lines, Frontier Airlines, JSX, Pegasus Airlines, Porter Airlines, Saudia, United Airlines | Amazon → |
| 6 | Bergan Comfort Carrier (Small) 16 × 8 × 11 in | 12 of 58 +1 flex | Allegiant Air, American Airlines, American Eagle (regional, incl. Republic Airways), Avelo Airlines, Breeze Airways, Copa Airlines, Delta Air Lines, Frontier Airlines, JSX, Pegasus Airlines, Saudia, United Airlines | Amazon → |
| 7 | Sherpa Original Deluxe (Medium) 17 × 11 × 10.5 in · up to ~16 lb | 11 of 58 +28 flex | Allegiant Air, American Airlines, American Eagle (regional, incl. Republic Airways), Copa Airlines, Delta Air Lines, Frontier Airlines, JSX, Pegasus Airlines, Porter Airlines, Saudia, United Airlines | Amazon → |
| 8 | Petsfit (Medium) Expandable Soft-Sided 17 × 11 × 11 in · up to ~13 lb | 10 of 58 | Allegiant Air, American Airlines, American Eagle (regional, incl. Republic Airways), Copa Airlines, Delta Air Lines, Frontier Airlines, JSX, Pegasus Airlines, Saudia, United Airlines | Amazon → |
| 9 | Frisco Premium Airline-Compliant Carrier 18 × 11 × 11 in · up to ~22 lb | 9 of 58 | Allegiant Air, American Airlines, American Eagle (regional, incl. Republic Airways), Copa Airlines, Delta Air Lines, Frontier Airlines, Pegasus Airlines, Saudia, United Airlines | Details |
| 10 | Diggs Passenger 17 × 12 × 10.5 in · Diggs discontinued this carrier — link goes to similar carriers | 6 of 58 | Allegiant Air, Frontier Airlines, JSX, Pegasus Airlines, Porter Airlines, Saudia | Details |
| 11 | ibiyaya JetPaw Expandable Backpack 18 × 12 × 10.5 in · up to ~17 lb | 5 of 58 | Allegiant Air, Frontier Airlines, Pegasus Airlines, Porter Airlines, Saudia | Details |
| 12 | SturdiBag Pro (Large, Flexible Height) 18 × 11.5 × 11.5 in | 2 of 58 +16 flex | Pegasus Airlines, Saudia | No new copies on Amazon right nowDetails |
| 13 | Sherpa Original Deluxe (Large) 19 × 11.75 × 11.5 in · up to ~22 lb | 2 of 58 +14 flex | Pegasus Airlines, Saudia | Details |
| 14 | Away The Pet Carrier 18.7 × 10.8 × 10.75 in · pets up to ~18 lb | 2 of 58 | Pegasus Airlines, Saudia | Details |
| 15 | Sleepypod Air 22 × 10.5 × 10.5 in · up to ~18 lb | 0 of 58 +11 flex | — | Details |
Amazon links are affiliate links — we may earn a commission at no extra cost to you. The ranking is pure geometry and never changes for it.
Watching the budget too? Compare in-cabin pet fees by airline → · every dimension is from the manufacturer's product page and every limit from the airline's official policy — sources cited on each linked page.
Which carrier fits your airline?
Every airline sets its own under-seat size, so the right carrier depends on who you fly. Pick yours for the carriers that clear its published limit: Southwest Airlines · American Airlines · Delta Air Lines · United Airlines · Alaska Airlines · JetBlue · Frontier Airlines · Air Canada · WestJet · all airlines →
Flying over Thanksgiving or Christmas? Read the holiday pet-travel guide →
Common questions
What is the best pet carrier for airline travel?
By pure airline-fit count, the Sherpa Original Deluxe (Small) (15 × 10 × 8.5 in) clears the most published limits — 41 of the 58 airlines with a published cabin limit. If you only ever fly one airline, check that airline's own fit list instead; the "best" carrier is the one that fits YOUR airline.
What does "airline-approved" mean on a pet carrier?
It is a label sellers put on the listing, not a test the carrier passed. What decides your flight is your airline's own published carrier size limit. This ranking checks each carrier's manufacturer-published external size against those limits: the Sherpa Original Deluxe (Small) is within 41 of 58, and each carrier's page lists exactly which airlines it clears.
How is this ranking calculated?
We compare each carrier's manufacturer-published external dimensions against each airline's official published carrier limit (height strict, footprint may rotate). No opinions, no sponsorships — the ranking is pure geometry, and the same comparison powers every fit table on this site.
Does a smaller carrier mean a worse carrier?
Not worse — smaller. A carrier that fits everything is also the tightest for your pet. Pick the LARGEST carrier that fits the airlines you actually fly, so your pet gets the most room the rules allow.