Alaska Airlines allows passengers to bring one personal item, such as a purse, briefcase, or laptop bag, and one piece of carry-on luggage not exceeding 22 inches by 14 inches by 9 inches. They don't specify the size limit of the personal item, but the seat width is approximately 17 ...
Natalie noted that Stanley is “on the larger size for in-cabin airline travel which caused a bit of anxiety for me but we encountered no problems whatsoever during our travel. I used the large Sturdi bag per your suggestion and it was perfect. He weighs about 17 ...