For Delta in-cabin pet travel, a carrier needs to fit fully under the seat in front of you and allow your pet to stand up and turn around comfortably. Delta’s commonly listed maximum sizes are:
Because under-seat space can vary by aircraft type and seat location, a soft-sided carrier is often the coziest, most practical choice—it can flex slightly to nestle into tighter spaces while still keeping your dog secure.
Start by measuring your dog and comparing those measurements to the carrier’s internal dimensions (not just the exterior). Your pup should be able to lie down naturally, shift positions, and turn around. If your dog is between sizes, prioritize a carrier with a structured base and breathable mesh panels so it stays stable while still feeling airy.
Also consider the travel details that make a big comfort difference: a padded bottom, strong zippers, durable seams, and easy-to-grab handles. Those little upgrades help keep your dog calmer through check-in, boarding, and the ride itself.
For more travel-comfort essentials—like what to pack, how to keep your dog relaxed, and the gear that holds up trip after trip—visit this pet travel comfort guide.
For in-cabin travel, your dog must fit comfortably in a carrier that stows under the seat in front of you. In practice, that usually means small dogs; larger dogs typically need different travel arrangements.
Delta generally requires you to add a pet to your reservation in advance due to limited space for in-cabin pets. The simplest route is to contact Delta directly or use the booking flow options shown for your itinerary.
Reach out to Delta as soon as possible with your confirmation number to request adding an in-cabin pet. Approval depends on availability and whether your flight and aircraft can accommodate pets.
