Question: pokemon let's go when do you get fly?
Answer: After you defeat Team Rocket, an NPC will appear outside of the Rocket Game Corner. Talk to him and he'll tell you about Sky Dash, a secret technique that he can teach to your Eevee or Pikachu, depending on which version of the game you own. Now, you have the ability to fly, using your Pikachu or Eevee anytime.