Airline compliance
Flying with your buddy
Most airlines allow a small pet in the cabin in a soft-sided carrier that fits under the seat in front of you. Our Sky carriers are designed to meet common under-seat limits.
In-cabin carrier limits by airline
Approximate maximum soft-carrier dimensions (inches, L × W × H). Policies vary by aircraft and change often — always confirm with your airline before you book and before you travel.
| Airline | Cabin max (L × W × H) |
|---|---|
| Delta | 18 × 11 × 11 |
| United | 18 × 11 × 11 |
| American | 18 × 11 × 11 |
| Southwest | 18.5 × 13.5 × 8.5 |
| Alaska | 17 × 11 × 9.5 |
| JetBlue | 17 × 12.5 × 8.5 |
| Frontier | 18 × 14 × 11 |
| Spirit | 18 × 14 × 9 |
| Hawaiian | 17 × 11 × 9.5 |
| Air Canada | 21.5 × 15.5 × 10.5 |
| WestJet | 16 × 10 × 8.5 |
Tips for a smooth flight
- Book your pet’s spot early — cabins limit how many pets are allowed per flight.
- Confirm your airline’s pet fee, health/vaccination paperwork, and breed or size rules.
- Let your pet get comfortable in the carrier at home before travel day.
- Soft-sided carriers flex to fit under the seat better than hard ones.
Reference values only. TuckTrail isn’t responsible for airline decisions — always verify current requirements directly with your airline.