Discover Airlines in-cabin pet policy — and the carriers that fit
Discover Airlines allows small pets in the cabin in a carrier up to 21.7 × 15.7 × 9.1 in, soft-sided, stowed under the seat in front of you. Already own a carrier? Enter its measurements below to check it against this limit. In-cabin fee: Subject to a fee that depends on the route (Discover publishes no single figure. 2 of the 15 carriers we track clear that published limit.
The Sherpa Original Deluxe (Small) leaves the most room — 0.6" on its tightest dimension, against just 0.1" for the Mr. Peanut's Gold Series Mini (Low-Profile). Discover's 9.1" height ceiling sits mid-pack among the 77 airlines we track (shared with airBaltic, Austrian, Brussels, Edelweiss, Eurowings, ITA, Lufthansa, SAS Scandinavian, Swiss International, Turkish): Aegean, Air Europa, Air France and Air Transat allow more, while EL AL Israel allows only 7".
Will your carrier fit Discover Airlines?
Measure the outside of your carrier (bulges included) and enter it below. The check uses Discover Airlines’s published 21.7 × 15.7 × 9.1 in limit — height is checked strictly, the footprint may rotate.
Carriers that clear Discover Airlines (21.7 × 15.7 × 9.1 in)
Roomiest margin first. Sized to the airline’s limit, not to your pet — measure your pet first →
| Carrier | Size | Fit | Buy |
|---|---|---|---|
Sherpa Original Deluxe (Small) up to ~8 lb · max pet 13″ long × 7.5″ tall | 15 × 10 × 8.5 in | Fits 0.6" spare | See on Amazon → |
 Mr. Peanut's Gold Series Mini (Low-Profile) up to ~15 lb | 17 × 11 × 9 in | Fits 0.1" spare | See on Amazon → |
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Discover Airlines pet rules
| Max carrier size (published) | 21.7 × 15.7 × 9.1 in |
| Carrier size caveat | Discover prints the limit as '55 x 40 x 23 cm (H x W x D) or 118 cm in total'. We store the smallest side, 23 cm (9.1 in), as the height so a fit is never overstated; it is the same 55 x 40 x 23 cm bag limit as its Lufthansa Group siblings. |
| Soft-sided required? | Yes |
| In-cabin fee | Subject to a fee that depends on the route (Discover publishes no single figure; its Service Center quotes the price) · compare all airlines → |
| Species allowed | dogs, cats |
| Weight | Max 8 kg (animal + bag) |
| Pets | Up to 2 animals in one travel carrier |
| Booking | Advance registration and confirmation are required. Minimum age 15 weeks to/from Germany, 6 months to/from the USA · what to book, buy and pack → |
Source: official Discover Airlines pet policy · verified 2026-10-03 · how Discover Airlines ranks on fee and space →
Carriers that fit Discover Airlines
Matched to Discover Airlines's published 21.7 × 15.7 × 9.1 in limit (height checked strictly; footprint may rotate). See the full Discover Airlines carrier shortlist →
Affiliate link — we may earn a small commission at no extra cost to you. It never changes our specs or which carriers we list.
This table ranks by Discover Airlines’s size limit — not by your pet. The weight under each carrier is what that size is rated to hold. A bag can clear the airline and still be the wrong size for the animal, which is the most common reason one goes back — measure your pet first →
| Carrier | Size | Fit | Buy |
|---|---|---|---|
Sherpa Original Deluxe (Small) up to ~8 lb · max pet 13″ long × 7.5″ tall | 15 × 10 × 8.5 in | Fits 0.6" spare | See on Amazon → |
Mr. Peanut's Gold Series Mini (Low-Profile) up to ~15 lb | 17 × 11 × 9 in | Fits 0.1" spare | See on Amazon → |
Mr. Peanut's Gold Series Standard (Expandable) up to ~20 lb | 18 × 11 × 10 in | Flexes — 0.9" over | See on Amazon → |
Sherpa Original Deluxe (Medium) up to ~16 lb · max pet 16″ long × 9.5″ tall | 17 × 11 × 10.5 in | Flexes — 1.4" over | See on Amazon → |
Sherpa Original Deluxe (Large) up to ~22 lb · max pet 18″ long × 10.5″ tall | 19 × 11.75 × 11.5 in | Flexes — 2.4" over | See on Amazon → |
SturdiBag Pro (Large, Flexible Height) pet size not published | 18 × 11.5 × 11.5 in | Flexes — 2.4" over | See on Amazon → |
9 carriers too big for Discover Airlines
Petmate Soft-Sided Kennel Cab (Medium) up to ~10 lb | 17 × 10 × 10 in | Too tall (10" > 9.1") | View on Amazon |
Diggs Passenger pet size not published · Diggs discontinued this carrier — link goes to similar carriers | 17 × 12 × 10.5 in | Too tall (10.5" > 9.1") | Compare similar on Amazon → |
ibiyaya JetPaw Expandable Backpack up to ~17 lb | 18 × 12 × 10.5 in | Too tall (10.5" > 9.1") | View on Amazon |
Sleepypod Atom up to ~12 lb | 17 × 8.5 × 10.5 in | Too tall (10.5" > 9.1") | View on Amazon |
Away The Pet Carrier pets up to ~18 lb | 18.7 × 10.8 × 10.75 in | Too tall (10.75" > 9.1") | Compare similar on Amazon → |
Petsfit (Medium) Expandable Soft-Sided up to ~13 lb | 17 × 11 × 11 in | Too tall (11" > 9.1") | View on Amazon |
Bergan Comfort Carrier (Small) pet size not published | 16 × 8 × 11 in | Too tall (11" > 9.1") | View on Amazon |
Frisco Premium Airline-Compliant Carrier up to ~22 lb | 18 × 11 × 11 in | Too tall (11" > 9.1") | Compare similar on Amazon → |
Sleepypod Air up to ~18 lb | 22 × 10.5 × 10.5 in | Too big | View on Amazon |
How to confirm your actual under-seat space
Discover Airlines's number is its published maximum, not a guarantee for your exact seat. Before you buy or fly:
- Check which aircraft operates your flight (in your booking or on a seat-map site).
- Avoid bulkhead and exit rows — bulkheads have no under-seat storage and most airlines ban pets there — and check this airline's seat rules above.
- Call Discover Airlines to confirm under-seat dimensions for that aircraft, or
- Choose a collapsible / flexible-height carrier that adapts to a tighter space.
More airlines: Air Canada · Alaska Airlines · Allegiant Air · American Airlines · Breeze Airways · Delta Air Lines · Frontier Airlines · Southwest Airlines · United Airlines · all →
Common questions
What size pet carrier does Discover Airlines allow in the cabin?
Discover Airlines's recommended maximum in-cabin carrier is 21.7 × 15.7 × 9.1 in. It must fit fully under the seat in front of you. Source: the Discover Airlines pet policy.
How much does Discover Airlines charge for an in-cabin pet?
Subject to a fee that depends on the route (Discover publishes no single figure; its Service Center quotes the price). Always confirm the current fee on the official Discover Airlines pet page before you fly.
Which pet carriers fit Discover Airlines?
2 of the 15 carriers we track clear Discover Airlines's published 21.7 × 15.7 × 9.1 in. The roomiest is the Sherpa Original Deluxe (Small), with 0.6" to spare on its tightest dimension. The heaviest pet any carrier that clears Discover Airlines is rated for is 15 lb. Full shortlist: /fits/discover-airlines/.
Does Discover Airlines require a soft-sided pet carrier?
Yes — Discover Airlines requires a soft-sided carrier in the cabin. Height is what rules carriers out: Discover Airlines publishes 9.1", against 13" at the most generous airline we track.
How many pets can I bring in the cabin on Discover Airlines?
Up to 2 animals in one travel carrier. Species accepted: dogs, cats. Weight limit: Max 8 kg (animal + bag). Advance registration and confirmation are required. Minimum age 15 weeks to/from Germany, 6 months to/from the USA