How do you use fly at Pokemon FireRed?

Answer 1

First you need the 3rd badge, Second you must teach the move to a Pokemon that can learn it (almost all flying types can learn it). Third press Start and press A on Pokemon choose the Pokemon that knows Fly and press A on it notice Fly will be highlighted in blue press A on it know the kanto map will open up move your cursor to any town or city then press A on it to Fly there. Fly only works when your outside (occassionally in some forests you can Fly). You can also use Fly to go between the islands in the game.