[KandL]

Depending on the airline you are flying, I would think you should be able to contact them and ask. When we book flights we look at the layout of the airplane to understand whether there is an accessible bathroom and try to choose our seats based upon its location. Of course, there’s no guarantee the plane will be the same as we booked. We also confirm both at the gate and then again on the flight that there will be an aisle transfer chair available during the flight and ask that an attendant put eyes on it to confirm it is still in place. I’m sure the attendants find this annoying but they have always been kind in doing so and hopefully understand the critical nature of it for someone on a long haul flight who needs it.