Once you beat the gym leader on cianwood city, speak to the lady outside
Outside Cianwood City Gym.
Assuming you mean the hm fly on Pokemon crystal, you get it from the lady out side of Cindawood gym.
Chuck's Wife (in front of the gym) Will give you Fly after you beat Chuck
After beating the gym leader on the island a girl is standing there, you have to go talk to her
In Pokemon Liquid Crystal, HM Fly is given to you by an Aide in the Goldenrod City Department Store after you have received the Glacier Badge. You can then teach the HM Fly to one of your Pokemon to fly to different locations in the game.
the hm fly will be give by bianca after you finish your battle to clay
You can find the HM Fly on Route 119.
you can find hm fly in the left side of celadon city use cut on the tree where the snorlax is sleeping then when you enter the road to the left you will see a house and the girl will give you a hm fly
In Pokemon Crystal, the HM Fly can only be obtained after defeating the gym leader in Cianwood City. After winning the badge, speak to the woman standing out side of the gym. She will give the player Fly.
To get the Fly HM, bring a Key to Floor 29 or 30, then find a lock to open. The HM should be inside.
When you defeat chuck in cianwood talk to the woman outside the gym and she will give you the fly HM
you find HM fly after you win against maylene your friend will come after a team battle go inside the galactic shed and you find HM fly.