The 11-inch iPad Air and the 13-inch iPad Air both have the same thickness of 0.24 inches (6.1 mm)[1][4]. This means that in terms of thickness, there is no difference between the two models. The primary differences lie in their size, weight, and screen real estate. The 13-inch model is larger and heavier, weighing about 1.36 pounds (617 grams) compared to the 11-inch model, which weighs about 1.02 pounds (462 grams)[1][4]. The 13-inch model offers more screen real estate, with a resolution of 2732x2048 pixels compared to the 11-inch model's 2360x1640 pixels, making it more suitable for tasks that require a larger display[7].
Citations:
[1] https://support.apple.com/en-us/119894
[2] https://www.macrumors.com/2024/05/07/ipad-pro-ipad-air-weight/
[3] https://www.pcmag.com/comparisons/2024-ipad-air-vs-ipad-pro-which-tablet-should-you-buy
[4] https://www.apple.com/ipad-air/specs/
[5] https://mashable.com/article/ipad-air-vs-ipad-pro-2024
[6] https://www.reddit.com/r/iPadPro/comments/1cwl29a/11_vs_13_inch_advice_from_someone_who_has_had_both/
[7] https://www.reddit.com/r/iPadPro/comments/1cqc97t/ipad_air_11_vs_13/
[8] https://www.backmarket.com/en-us/c/ipad/ipad-sizes-comparison