Went on a search for chairs but need more info or photo - color, style, metal, leather, wood - so many variables and do not have enough information to go on - your name sounds familiar though - perhaps I so it and cannot remember to give proper feedback . . .

Airline seats are 17 inches wide and are often uncomfortably narrow. Adult shoulders are usually at least 17 inches wide. You might think about a bench that will hold as many as comfortable instead of individual chairs.

stools are your best bet if space is narrow--
they take up less visual room is you get backless ones too...