In "Minecraft's" Creative or Spectator modes, you can fly by double-tapping the jump button, but in Survival mode, you'll need to find an Elytra.

Players can soar through the skies with an Elytra in Minecraft, as this gliding tool allows players to safely travel through the air, where they can reach great speeds to get to where they want to go ...

You can find a saddle in "Minecraft" in treasure chests, by fishing, by trading with Leatherworkers, or by hunting Ravagers.