which carrier fits your airline

Which in-cabin pet carrier fits your airline?

Pick your airline and instantly see which carriers fit its official published under-seat limit — with the short-height airlines (Southwest, JetBlue, Sun Country, Air Canada) and collapsible carriers flagged for you. No listicle to scroll; we do the math.

⚠️ The honest catch: an airline's published size is the biggest carrier that fits most of its fleet — the actual space under your seat varies by aircraft (a window seat with an entertainment box has less; a bulkhead has none). We never invent a per-aircraft number. Read why the website number is optimistic →

Browse

All airline policies
58 airlines · limits, fees, rules — cited
All carriers
15 carriers · published external dimensions
The in-cabin checklist
Book, buy and pack — counts from every policy we track
The under-seat truth
Why 18×11×11 doesn't mean 11" of real height
Pet fees compared
Every US carrier's in-cabin fee, $35–$150 — cited
Best carriers, ranked
By how many airlines each one actually fits
Fits Southwest (8.5")
The short-height carriers that actually work

Carriers that clear the most airlines

Ranked by how many of the 43 airlines with a published cabin limit each one clears at its published size — the same computation behind every fit verdict on this site.

Affiliate link — we may earn a small commission at no extra cost to you. It never changes our specs or which carriers we list.

Sherpa Original Deluxe (Small)
Clears 29 of 43 airlines outright · 15 × 10 × 8.5 in · up to ~8 lb
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Mr. Peanut's Airline Approved Soft Sided Pet Carrier, Low Profile Gold Series Tote, Premium Brand Self Locking Zippers, Mr. Peanut's Gold Series Mini (Low-Profile)
Clears 22 of 43 airlines outright · 17 × 11 × 9 in · up to ~15 lb
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Petmate Kennel Cab Soft-Sided Dog & Cat Carrier, up to 10lbs, 17in, BlackPetmate Soft-Sided Kennel Cab (Medium)
Clears 9 of 43 airlines outright · 17 × 10 × 10 in · up to ~10 lb
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Mr. Peanut's Gold Series Standard Size Airline Compliant Expandable Pet Carrier V3.0Mr. Peanut's Gold Series Standard (Expandable)
Clears 8 of 43 airlines outright · 18 × 11 × 10 in · up to ~20 lb
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Sleepypod® Atom, Airline Approved Pet Carrier, Crash Tested, Charcoal GreySleepypod Atom
Clears 8 of 43 airlines outright · 17 × 8.5 × 10.5 in · up to ~12 lb
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Coastal Pet Bergan Comfort Carrier - Breathable Travel Carrier for Dogs & Cats - Black & Grey, 16" x 8" x 11&qBergan Comfort Carrier (Small)
Clears 8 of 43 airlines outright · 16 × 8 × 11 in
See on Amazon →

Popular comparisons

The carrier pairs shoppers cross-shop most, each with a verdict on which one clears more airlines.

Sherpa Original Deluxe (Medium) vs Sleepypod Air Away The Pet Carrier vs Diggs Passenger Sleepypod Air vs Sleepypod Atom Sherpa Original Deluxe (Large) vs SturdiBag Pro (Large, Flexible Height) Mr. Peanut's Gold Series Standard (Expandable) vs Sherpa Original Deluxe (Medium) Away The Pet Carrier vs Sleepypod Air Petsfit (Medium) Expandable Soft-Sided vs Sherpa Original Deluxe (Medium) Diggs Passenger vs Sleepypod Air Sherpa Original Deluxe (Medium) vs Sherpa Original Deluxe (Small) Sleepypod Air vs SturdiBag Pro (Large, Flexible Height) Mr. Peanut's Gold Series Mini (Low-Profile) vs Sleepypod Atom Diggs Passenger vs SturdiBag Pro (Large, Flexible Height) Bergan Comfort Carrier (Small) vs Frisco Premium Airline-Compliant Carrier Petmate Soft-Sided Kennel Cab (Medium) vs Sherpa Original Deluxe (Medium) Away The Pet Carrier vs SturdiBag Pro (Large, Flexible Height)