I was 81 and flew to Italy last March. I requested wheelchair from airlines, and it was fantastic. As soon as I entered the airport in Minneapolis there was a wheelchair. They took my luggage to the check-in desk and then took me through security all the way to the gate. They knew where to go and I just enjoyed the ride!
Airlines also offered help to get on plane, but I could handle that, I just can't walk long distances carrying anything.
I had a wheelchair waiting at each connection point.
Coming back, I stayed overnight in hotel at Milan Malpensa airport. A wheelchair came to the hotel desk to pick me up and took me through check-in, security and all the way to the gate - which was a distance! And that was a wheelchair to see - it was motorized!!
I was so grateful for wheelchair assistance as my oxygen levels fall with exertion.