Online, delta recommends an 18 x 11 x 11 pet carrier. However, when I look at the underseat dimensions on the assigned airplanes for the main cabin, I

Delta Airlines recommends a soft-sided pet carrier of 18 x 11 x 11 inches for in-cabin travel, but some main cabin underseat spaces, like those on the Airbus A220-300, list a height of just 9 inches. This discrepancy can confuse pet owners planning to fly with their small dogs or cats. The issue stems from varying aircraft types, where underseat dimensions differ due to structural elements like power ports. Soft-sided carriers are key, as their flexibility allows them to conform to tighter spaces, often resolving the height concern.

Travelers report that Delta staff rarely measure carriers if they appear to fit, especially at check-in. To avoid issues, confirm your flight’s aircraft type and underseat dimensions by calling Delta at 877-297-0699.

Booking early and selecting aisle seats in Comfort+ may offer more room. Always ensure your pet can move comfortably in the carrier, as this is a Delta requirement. For real-time guidance or to reserve a pet spot, contact Delta’s team at 877-297-0699. With preparation and a flexible carrier, you can ensure a smooth journey for you and your pet.
 
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