Call your county Agency on Aging to see if there are any transportation companies that work with seniors to give him a lower fare and help them to the door, etc.
Are you asking for free transport? I don't know who you'd call. For paid, a taxi company, or use Uber or Lyft. My hubby began using Uber for rides to the airport and it has saved my sanity! No 2 am runs to the airport to get him! Uber and Lyft are both done with cellphones, so that may not work.
There are also a lot of Driving Miss Daisy type services in every community. But I would call the town office and see what services are offered to seniors in your area.