The Flight of Ganon (also known as Ganon Super Jump or FoG) is an advanced technique in Brawl that only Ganondorf can perform. It allows him to take a very high jump, despite his very short jumps overall (though it leaves him with no second jump left). It can be performed in two ways.
Method 1
This one is harder to do and very difficult to master, but is overall much more useful because he can use it almost anywhere where there is ground. Most of the time, it is done by short hopping and air dodging and double jumping at the same time near the apex (a bit lower though) and buffering a Wizard's Foot and double jumping at the same time, but it overall works anywhere when the air dodge animation finishes right before touching the ground so the Wizard's Foot cancels in the ground with an instant shockwave, where the jump at the same time allows him to get the high jump. It's best use punishing high recoveries or surprising opponents near the top of the screen with Ganondorf's high jump. It also allows him to use the reverse aerial Warlock Punch after breaking a shield, which KO's at even lower percents than his grounded reverse Warlock Punch version.
Method 2
This one is easier than method 1, but is still difficult to master and it has overall very situational uses because the positions where he can perform it are very limited, unlike method 1. Usually in flat stages it is performed by rolling to the edge, performing a grounded Wizard's Foot and when the move finishes, buffering the down special and jump button at the same time. It can also be done from a higher plataform to a slightly lower one without needing to roll to the edge first.