I recently read an offhand remark elsewhere of 1914 for the start of commercial fight. However I don't trust it because in the same location I read it is incorrect information on when the Model T Ford came out which makes all the info I read suspect in my mind. So I decided I should ask the aviation enthusiast over here what the truth is.
What year did commercial fight start? In this case meaning when was it first possible for paying passengers to go up in a heavier-than-air aircraft. Second, when did airlines that offer regular passenger service between destinations start?
I would appreciate ether a direct answer, a link to a good source, or both please.