In A Realm Reborn, flying for all zones unlocks immediately after the end of the 2.0 quests, so you’ll have flight during all the patch quests.
In the expansions, flight is unlocked by a combination of doing certain side quests and finding a certain number of aether currents in the zone. Once you’ve done all of them, you get flight in that zone. Typically, the last quest you need to get flight is locked behind completing most of the story in that area.
In A Realm Reborn, flying for all zones unlocks immediately after the end of the 2.0 quests, so you’ll have flight during all the patch quests.
In the expansions, flight is unlocked by a combination of doing certain side quests and finding a certain number of aether currents in the zone. Once you’ve done all of them, you get flight in that zone. Typically, the last quest you need to get flight is locked behind completing most of the story in that area.