Brussels Airlines in-cabin pet policy — and the carriers that fit
Brussels 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: An additional fee applies per flight, purchased when booking. 1 of the 15 carriers we track clears that published limit.
The Sherpa Original Deluxe (Small) is the one that clears it, with 0.6" to spare on its tightest dimension. Brussels's 9.1" height ceiling sits mid-pack among the 58 airlines we track (shared with Austrian, ITA, Lufthansa, SAS Scandinavian, Swiss International, Turkish): Aegean, Air France, Air Transat and Alaska allow more, while EL AL Israel allows only 7".
Will your carrier fit Brussels Airlines?
Measure the outside of your carrier (bulges included) and enter it below. The check uses Brussels Airlines’s published 21.7 × 15.7 × 9.1 in limit — height is checked strictly, the footprint may rotate.
Brussels Airlines pet rules
| Recommended max carrier (soft) | 21.7 × 15.7 × 9.1 in |
| Soft-sided required? | Yes |
| In-cabin fee | An additional fee applies per flight, purchased when booking; Brussels Airlines publishes no single figure and carriage is subject to availability · compare all airlines → |
| Species allowed | small dogs, cats |
| Weight | 8 kg (17.6 lb) including the transport bag |
| Pets | Not published |
| Booking | Book in advance online via "My booking" or through the Brussels Airlines Service Centre — subject to availability |
Source: official Brussels Airlines pet policy · verified 2026-07-23
Carriers that fit Brussels Airlines
Matched to Brussels Airlines's published 21.7 × 15.7 × 9.1 in limit (height checked strictly; footprint may rotate). See the full Brussels 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.
| Carrier | Size | Fit | Buy |
|---|---|---|---|
| 15 × 10 × 8.5 in | Fits 0.6" spare | See on Amazon → | |
| 16 × 10.5 × 9.8 in | Flexes — check height | See on Amazon → | |
| 17 × 11 × 10.5 in | Flexes — check height | See on Amazon → | |
| 19 × 11.75 × 11.5 in | Flexes — check height | See on Amazon → | |
| 18.5 × 11.75 × 11.5 in | Flexes — check height | See on Amazon → | |
| 18 × 11.5 × 11.5 in | Flexes — check height | See on Amazon → | |
| 17 × 10 × 10 in | Too tall (10" > 9.1") | See on Amazon → | |
| 17 × 12 × 10.5 in | Too tall (10.5" > 9.1") | See on Amazon → | |
| 17 × 8.5 × 10.5 in | Too tall (10.5" > 9.1") | See on Amazon → | |
| 18.7 × 10.8 × 10.75 in | Too tall (10.75" > 9.1") | See on Amazon → | |
| 17 × 11 × 11 in | Too tall (11" > 9.1") | See on Amazon → | |
| 16 × 8 × 11 in | Too tall (11" > 9.1") | See on Amazon → | |
| 18 × 11 × 11 in | Too tall (11" > 9.1") | See on Amazon → | |
| 18 × 12 × 12 in | Too tall (12" > 9.1") | See on Amazon → | |
| 22 × 10.5 × 10.5 in | Too big | See on Amazon → |
How to confirm your actual under-seat space
Brussels Airlines's number is a fleet-wide recommendation, not a promise 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 some window seats — they have less (or no) under-seat storage.
- Call Brussels 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 Brussels Airlines allow in the cabin?
Brussels 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 Brussels Airlines pet policy.
How much does Brussels Airlines charge for an in-cabin pet?
An additional fee applies per flight, purchased when booking; Brussels Airlines publishes no single figure and carriage is subject to availability. Always confirm the current fee on the official Brussels Airlines pet page before you fly.
Which pet carriers fit Brussels Airlines?
1 of the 15 carriers we track clears Brussels 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. Full shortlist: /fits/brussels-airlines/.
Does Brussels Airlines require a soft-sided pet carrier?
Yes — Brussels Airlines requires a soft-sided carrier in the cabin. Height is what rules carriers out: Brussels Airlines publishes 9.1", against 13" at the most generous airline we track.
How many pets can I bring in the cabin on Brussels Airlines?
Not published. Species accepted: small dogs, cats. Weight limit: 8 kg (17.6 lb) including the transport bag. Book in advance online via "My booking" or through the Brussels Airlines Service Centre — subject to availability