Sherpa Original Deluxe (Medium) — dimensions & which airlines it fits
Sherpa Original Deluxe (Medium): 17 × 11 × 10.5 in external, up to ~16 lb. Spring-wire top flexes down to squeeze under lower seats. Guaranteed On Board®.
It clears 11 of 58 airlines with a published limit outright, and 7 of those are an exact fit with no margin to spare (American Airlines, American Eagle (regional, incl. Republic Airways), Copa Airlines, Delta Air Lines, JSX). Under-seat space varies by aircraft, so an exact fit can still fail on the day — check your specific flight. Check your pet before you buy. This one is rated up to ~16 lb — and Sherpa's own limit is 16 in long × 9.5 in tall. Same bag, other sizes: Small up to ~8 lb (fits 41) · Large up to ~22 lb (fits 2). Clears more airlines: the Small clears 41 of 58, but takes a pet only up to 13 in long × 7.5 in tall — check yours against that before switching.
Weight alone under-determines fit — a pet can be under the weight limit and still be too long. Measure your pet lying down and compare against both. How to measure →
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Same range, other sizes
The airline decides whether the bag fits. Your pet's weight decides whether the size is right — and those two can point at different Sherpa models. Check the pet first: how to measure →
Original Deluxe (Medium) · you are here
up to ~16 lb
17 × 11 × 10.5 in · fits 11 of 58 outright
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Specs
| External size (L×W×H) | 17 × 11 × 10.5 in |
| Type | soft-sided · flexible height |
| Pet weight | up to ~16 lb |
Dimensions from the manufacturer product page · verified 2026-09-03
Affiliate link — we may earn a small commission at no extra cost to you. It never changes our specs or which carriers we list.
Which airlines does the Sherpa Original Deluxe (Medium) fit?
Compared against each airline's published under-seat limit (height strict; footprint may rotate). Green = within the published size; amber = fits only when collapsed / flexed; grey = over.
| Airline | Its limit | This carrier |
|---|---|---|
| Allegiant Air | 18 × 12 × 11 in | Fits 17 × 11 × 10.5 in is within 18 × 12 × 11 in — 1" spare on length, 1" on width, 0.5" on height. Tightest margin is 0.5", so measure before you fly. |
| American Airlines | 18 × 11 × 11 in | Exact fit 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. · full fit check → |
| American Eagle (regional, incl. Republic Airways) | 18 × 11 × 11 in | Exact fit 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. |
| Copa Airlines | 18 × 11 × 11 in | Exact fit 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. |
| Delta Air Lines | 18 × 11 × 11 in | Exact fit 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. · full fit check → |
| Frontier Airlines | 18 × 14 × 11 in | Fits 17 × 11 × 10.5 in is within 18 × 14 × 11 in — 1" spare on length, 3" on width, 0.5" on height. Tightest margin is 0.5", so measure before you fly. · full fit check → |
| JSX | 17 × 13 × 11 in | Exact fit 17 × 11 × 10.5 in is within 17 × 13 × 11 in — 0" spare on length, 2" on width, 0.5" on height. Tightest margin is 0", so measure before you fly. |
| Pegasus Airlines over its 17.6 lb combined limit once the bag is counted | 19.7 × 12.6 × 12.6 in | Fits 17 × 11 × 10.5 in is within 19.7 × 12.6 × 12.6 in — 2.7" spare on length, 1.6" on width, 2.1" on height. |
| Porter Airlines | 21.5 × 15.5 × 10.5 in | Exact fit 17 × 11 × 10.5 in is within 21.5 × 15.5 × 10.5 in — 4.5" spare on length, 4.5" on width, 0" on height. Tightest margin is 0", so measure before you fly. |
| Saudia over its 11 lb combined limit once the bag is counted | 21 × 16 × 13 in | Fits 17 × 11 × 10.5 in is within 21 × 16 × 13 in — 4" spare on length, 5" on width, 2.5" on height. |
| United Airlines | 18 × 11 × 11 in | Exact fit 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. · full fit check → |
| Air Canada | 17 × 16 × 8 in | Flexes — 2.5" over 10.5" tall vs a 8" limit — 2.5" over, but the flexible-height top compresses down. Verify it squeezes under your actual seat. · full fit check → |
| Air France over its 17.64 lb combined limit once the bag is counted | 18.1 × 11 × 9.4 in | Flexes — 1.1" over 10.5" tall vs a 9.4" limit — 1.1" over, but the flexible-height top compresses down. Verify it squeezes under your actual seat. |
| airBaltic over its 17.6 lb combined limit once the bag is counted | 21.7 × 15.7 × 9.1 in | Flexes — 1.4" over 10.5" tall vs a 9.1" limit — 1.4" over, but the flexible-height top compresses down. Verify it squeezes under your actual seat. |
| Alaska Airlines | 17 × 11 × 9.5 in | Flexes — 1" over 10.5" tall vs a 9.5" limit — 1" over, but the flexible-height top compresses down. Verify it squeezes under your actual seat. · full fit check → |
| Alaska Horizon (Horizon Air) | 17 × 11 × 9.5 in | Flexes — 1" over 10.5" tall vs a 9.5" limit — 1" over, but the flexible-height top compresses down. Verify it squeezes under your actual seat. |
| Asiana Airlines | 17.7 × 12.6 × 8.2 in | Flexes — 2.3" over 10.5" tall vs a 8.2" limit — 2.3" over, but the flexible-height top compresses down. Verify it squeezes under your actual seat. |
| Austrian Airlines over its 17.6 lb combined limit once the bag is counted | 21.7 × 15.7 × 9.1 in | Flexes — 1.4" over 10.5" tall vs a 9.1" limit — 1.4" over, but the flexible-height top compresses down. Verify it squeezes under your actual seat. |
| Avianca | 22 × 14 × 10 in | Flexes — 0.5" over 10.5" tall vs a 10" limit — 0.5" over, but the flexible-height top compresses down. Verify it squeezes under your actual seat. |
| Brussels Airlines over its 17.6 lb combined limit once the bag is counted | 21.7 × 15.7 × 9.1 in | Flexes — 1.4" over 10.5" tall vs a 9.1" limit — 1.4" over, but the flexible-height top compresses down. Verify it squeezes under your actual seat. |
| Cape Air over its 20 lb combined limit once the bag is counted | 17 × 12.5 × 8.5 in | Flexes — 2" over 10.5" tall vs a 8.5" limit — 2" over, but the flexible-height top compresses down. Verify it squeezes under your actual seat. |
| Condor over its 17.6 lb combined limit once the bag is counted | 21.6 × 15.7 × 9 in | Flexes — 1.5" over 10.5" tall vs a 9" limit — 1.5" over, but the flexible-height top compresses down. Verify it squeezes under your actual seat. |
| Contour Airlines | 24 × 16 × 10 in | Flexes — 0.5" over 10.5" tall vs a 10" limit — 0.5" over, but the flexible-height top compresses down. Verify it squeezes under your actual seat. |
| Discover Airlines | 21.7 × 15.7 × 9.1 in | Flexes — 1.4" over 10.5" tall vs a 9.1" limit — 1.4" over, but the flexible-height top compresses down. Verify it squeezes under your actual seat. |
| Edelweiss over its 17.6 lb combined limit once the bag is counted | 21.7 × 15.7 × 9.1 in | Flexes — 1.4" over 10.5" tall vs a 9.1" limit — 1.4" over, but the flexible-height top compresses down. Verify it squeezes under your actual seat. |
| Eurowings over its 17.6 lb combined limit once the bag is counted | 21.7 × 15.7 × 9.1 in | Flexes — 1.4" over 10.5" tall vs a 9.1" limit — 1.4" over, but the flexible-height top compresses down. Verify it squeezes under your actual seat. |
| Finnair over its 17.6 lb combined limit once the bag is counted | 21.7 × 15.7 × 7.9 in | Flexes — 2.6" over 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. |
| Hawaiian Airlines | 17 × 11 × 9.5 in | Flexes — 1" over 10.5" tall vs a 9.5" limit — 1" over, but the flexible-height top compresses down. Verify it squeezes under your actual seat. |
| Iberia over its 17.6 lb combined limit once the bag is counted | 17.7 × 13.8 × 9.8 in | Flexes — 0.7" over 10.5" tall vs a 9.8" limit — 0.7" over, but the flexible-height top compresses down. Verify it squeezes under your actual seat. |
| ITA Airways | 21.7 × 15.7 × 9.1 in | Flexes — 1.4" over 10.5" tall vs a 9.1" limit — 1.4" over, but the flexible-height top compresses down. Verify it squeezes under your actual seat. |
| JetBlue | 17 × 12.5 × 8.5 in | Flexes — 2" over 10.5" tall vs a 8.5" limit — 2" over, but the flexible-height top compresses down. Verify it squeezes under your actual seat. |
| KLM Royal Dutch Airlines over its 17.6 lb combined limit once the bag is counted | 18.1 × 11 × 9.4 in | Flexes — 1.1" over 10.5" tall vs a 9.4" limit — 1.1" over, but the flexible-height top compresses down. Verify it squeezes under your actual seat. |
| Korean Air over its 15 lb combined limit once the bag is counted | 17.5 × 12.5 × 7.5 in | Flexes — 3" over 10.5" tall vs a 7.5" limit — 3" over, but the flexible-height top compresses down. Verify it squeezes under your actual seat. |
| LOT Polish Airlines over its 17.6 lb combined limit once the bag is counted | 17.7 × 11.8 × 7.9 in | Flexes — 2.6" over 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. |
| Lufthansa over its 17.6 lb combined limit once the bag is counted | 21.7 × 15.7 × 9.1 in | Flexes — 1.4" over 10.5" tall vs a 9.1" limit — 1.4" over, but the flexible-height top compresses down. Verify it squeezes under your actual seat. |
| Royal Air Maroc over its 17.6 lb combined limit once the bag is counted | 21.7 × 15.7 × 7.9 in | Flexes — 2.6" over 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. |
| Sun Country Airlines | 17 × 12 × 9 in | Flexes — 1.5" over 10.5" tall vs a 9" limit — 1.5" over, but the flexible-height top compresses down. Verify it squeezes under your actual seat. |
| Swiss International Air Lines over its 17.6 lb combined limit once the bag is counted | 21.7 × 15.7 × 9.1 in | Flexes — 1.4" over 10.5" tall vs a 9.1" limit — 1.4" over, but the flexible-height top compresses down. Verify it squeezes under your actual seat. |
| TAP Air Portugal over its 17 lb combined limit once the bag is counted | 17.7 × 11.8 × 9 in | Flexes — 1.5" over 10.5" tall vs a 9" limit — 1.5" over, but the flexible-height top compresses down. Verify it squeezes under your actual seat. |
| Viva Aerobus | 17.3 × 13.8 × 8.3 in | Flexes — 2.2" over 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. |
| Volaris | 17.3 × 11.8 × 7.5 in | Flexes — 3" over 10.5" tall vs a 7.5" limit — 3" over, but the flexible-height top compresses down. Verify it squeezes under your actual seat. |
| Vueling | 17.7 × 15.4 × 8.3 in | Flexes — 2.2" over 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. |
| Aegean Airlines | 15.7 × 9.8 × 9.8 in | Too big 17 × 11 × 10.5 in is over the 15.7 × 9.8 × 9.8 in limit. |
| Air Europa | 15.7 × 11.8 × 11.8 in | Too big 17 × 11 × 10.5 in is over the 15.7 × 11.8 × 11.8 in limit. |
| Air Transat | 17 × 9.5 × 10 in | Too big 17 × 11 × 10.5 in is over the 17 × 9.5 × 10 in limit. |
| Avelo Airlines | 17 × 9 × 13 in | Too big 17 × 11 × 10.5 in is over the 17 × 9 × 13 in limit. |
| Azul Linhas Aéreas | 16.9 × 12.4 × 7.8 in | Too big 17 × 11 × 10.5 in is over the 16.9 × 12.4 × 7.8 in limit. |
| Breeze Airways | 17 × 8 × 13 in | Too big 17 × 11 × 10.5 in is over the 17 × 8 × 13 in limit. |
| EL AL Israel Airlines | 13 × 8 × 7 in | Too big 17 × 11 × 10.5 in is over the 13 × 8 × 7 in limit. |
| Etihad Airways | 15.7 × 15.7 × 8.7 in | Too big 17 × 11 × 10.5 in is over the 15.7 × 15.7 × 8.7 in limit. |
| GOL Linhas Aéreas | 16.9 × 12.6 × 9.4 in | Too big 17 × 11 × 10.5 in is over the 16.9 × 12.6 × 9.4 in limit. |
| LATAM Airlines | 15.7 × 11 × 9.8 in | Too big 17 × 11 × 10.5 in is over the 15.7 × 11 × 9.8 in limit. |
| Norwegian | 16.9 × 12.2 × 7.9 in | Too big 17 × 11 × 10.5 in is over the 16.9 × 12.2 × 7.9 in limit. |
| SAS Scandinavian Airlines | 15.7 × 9.8 × 9.1 in | Too big 17 × 11 × 10.5 in is over the 15.7 × 9.8 × 9.1 in limit. |
| Southwest Airlines | 18 × 10.5 × 10 in | Too big 17 × 11 × 10.5 in is over the 18 × 10.5 × 10 in limit. · full fit check → |
| Transavia | 15.7 × 11.8 × 9.4 in | Too big 17 × 11 × 10.5 in is over the 15.7 × 11.8 × 9.4 in limit. |
| Turkish Airlines | 15.7 × 11.8 × 9.1 in | Too big 17 × 11 × 10.5 in is over the 15.7 × 11.8 × 9.1 in limit. |
| WestJet | 16 × 10 × 8.5 in | Too big 17 × 11 × 10.5 in is over the 16 × 10 × 8.5 in limit. |
| Aeroméxico over its 19.8 lb combined limit once the bag is counted | not published | Size not published Aeroméxico does not publish a maximum carrier size, so we will not compute a fit. Confirm the under-seat allowance with Aeroméxico before you book. |
| Croatia Airlines | not published | Size not published Croatia Airlines does not publish a maximum carrier size, so we will not compute a fit. Confirm the under-seat allowance with Croatia Airlines before you book. |
| Mokulele Airlines | not published | Size not published Mokulele Airlines does not publish a maximum carrier size, so we will not compute a fit. Confirm the under-seat allowance with Mokulele Airlines before you book. |
| Southern Airways Express over its 15 lb combined limit once the bag is counted | not published | Size not published Southern Airways Express does not publish a maximum carrier size, so we will not compute a fit. Confirm the under-seat allowance with Southern Airways Express before you book. |
| Aer Lingus | not published | No cabin pets Aer Lingus does not accept pets in the cabin, so carrier size is not the deciding factor. Check Aer Lingus's own policy for cargo or approved pet-shipper options. |
| Air New Zealand | not published | No cabin pets Air New Zealand does not accept pets in the cabin, so carrier size is not the deciding factor. Check Air New Zealand's own policy for cargo or approved pet-shipper options. |
| ANA (All Nippon Airways) | not published | No cabin pets ANA (All Nippon Airways) does not accept pets in the cabin, so carrier size is not the deciding factor. Check ANA (All Nippon Airways)'s own policy for cargo or approved pet-shipper options. |
| British Airways | not published | No cabin pets British Airways does not accept pets in the cabin, so carrier size is not the deciding factor. Check British Airways's own policy for cargo or approved pet-shipper options. |
| Cathay Pacific | not published | No cabin pets Cathay Pacific does not accept pets in the cabin, so carrier size is not the deciding factor. Check Cathay Pacific's own policy for cargo or approved pet-shipper options. |
| China Airlines | not published | No cabin pets China Airlines does not accept pets in the cabin, so carrier size is not the deciding factor. Check China Airlines's own policy for cargo or approved pet-shipper options. |
| easyJet | not published | No cabin pets easyJet does not accept pets in the cabin, so carrier size is not the deciding factor. Check easyJet's own policy for cargo or approved pet-shipper options. |
| Emirates | not published | No cabin pets Emirates does not accept pets in the cabin, so carrier size is not the deciding factor. Check Emirates's own policy for cargo or approved pet-shipper options. |
| Icelandair | not published | No cabin pets Icelandair does not accept pets in the cabin, so carrier size is not the deciding factor. Check Icelandair's own policy for cargo or approved pet-shipper options. |
| Japan Airlines | not published | No cabin pets Japan Airlines does not accept pets in the cabin, so carrier size is not the deciding factor. Check Japan Airlines's own policy for cargo or approved pet-shipper options. |
| Qantas | not published | No cabin pets Qantas does not accept pets in the cabin, so carrier size is not the deciding factor. Check Qantas's own policy for cargo or approved pet-shipper options. |
| Qatar Airways | not published | No cabin pets Qatar Airways does not accept pets in the cabin, so carrier size is not the deciding factor. Check Qatar Airways's own policy for cargo or approved pet-shipper options. |
| Ryanair | not published | No cabin pets Ryanair does not accept pets in the cabin, so carrier size is not the deciding factor. Check Ryanair's own policy for cargo or approved pet-shipper options. |
| Singapore Airlines | not published | No cabin pets Singapore Airlines does not accept pets in the cabin, so carrier size is not the deciding factor. Check Singapore Airlines's own policy for cargo or approved pet-shipper options. |
| Virgin Atlantic | not published | No cabin pets Virgin Atlantic does not accept pets in the cabin, so carrier size is not the deciding factor. Check Virgin Atlantic's own policy for cargo or approved pet-shipper options. |
"Fits" here means it's within the published maximum — the actual space under your seat varies by aircraft. See why →
Compared with
Sherpa Original Deluxe (Medium) vs Sleepypod Air Sherpa Original Deluxe (Medium) vs Mr. Peanut's Gold Series Standard (Expandable) Sherpa Original Deluxe (Medium) vs Petsfit (Medium) Expandable Soft-Sided Sherpa Original Deluxe (Medium) vs Sherpa Original Deluxe (Small) Sherpa Original Deluxe (Medium) vs Petmate Soft-Sided Kennel Cab (Medium)
Not sure this is the one? See the best carriers ranked by how many airlines they fit · compare all: carriers · fit for a specific airline: Aegean Airlines · Aer Lingus · Aeroméxico · Air Canada · Air Europa
Common questions
What are the dimensions of the Sherpa Original Deluxe (Medium)?
Its published external size is 17 × 11 × 10.5 in, rated for up to ~16 lb. Source: the manufacturer's product page.
Which airlines does the Sherpa Original Deluxe (Medium) fit?
Against published limits it fits 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, Air Canada, Air France, airBaltic, Alaska Airlines, Alaska Horizon (Horizon Air), Asiana Airlines, Austrian Airlines, Avianca, Brussels Airlines, Cape Air, Condor, Contour Airlines, Discover Airlines, Edelweiss, Eurowings, Finnair, Hawaiian Airlines, Iberia, ITA Airways, JetBlue, KLM Royal Dutch Airlines, Korean Air, LOT Polish Airlines, Lufthansa, Royal Air Maroc, Sun Country Airlines, Swiss International Air Lines, TAP Air Portugal, Viva Aerobus, Volaris, Vueling, Aeroméxico, Croatia Airlines, Mokulele Airlines, Southern Airways Express, Aer Lingus, Air New Zealand, ANA (All Nippon Airways), British Airways, Cathay Pacific, China Airlines, easyJet, Emirates, Icelandair, Japan Airlines, Qantas, Qatar Airways, Ryanair, Singapore Airlines, Virgin Atlantic. Real under-seat space varies by aircraft, so confirm for your flight.