Flying: One of the most important reasons why Aion is so famous, is because of the flight system. To start flying, you'll have to reach level 10 first and you should have finished the Ascension quest. Once you've done that, the only thing you will have to is press the "Toggle Flight/Landing" button. Once you are flying, you can do whatever you want. Fly left, right, up (R key by default) or down (F key by default). It's all up to you. While you are in this flight mode, every second you spend in the air will reduce your total flight time by 1 second. Say your total flight time was 60 seconds. This would mean you can stay in the air for 60 seconds.

Gliding: The second type of flight in Aion is gliding. To get in a "glide" state, all you have to do is press spacebar while you jump. Unlike flying, gliding can be done at any level and doesn't need a quest to unlock it. Gliding is especially usefull if you are walking/running on a downwards slope. If this is used wisely, you can catch up with people that are ahead of you. While you are gliding, every second you are in the "glide" state, 2 seconds will be recuded from your total flight time. Say your total flight time was 60 seconds. This would mean you can glide for 30 seconds before your flight time runs out.