In Horizon Forbidden West (HZFW) you can get a flying mount to fly across the map. This makes it very fast and easy to reach any place. The only downside is that this is an endgame unlock from the end of the story, so you must play through the story first.
How to Unlock Flying Mount
The flying mount is called “Sunwing”. It unlocks after the 16th Main Story Quest “The Wings of the Ten”. As part of the story you will get this mount for the final story quest. For reference, there are 17 Main Quests in the game, meaning this is just at the very end.
In other words: play through the story and you’ll get it automatically at the end.
There’s no way to unlock flying mounts any sooner than that. It’s simply an automatic story reward.
For more guides, check out the full Horizon Forbidden West Wiki & Strategy Guide.