Seems that the buff the Filled Festive Mug gives you, Lightheaded, has some strange properties...
If you drink a mug and gain the buff, hop on a paid flight. When the buff runs out, your flight stops, and hangs in mid-air.
According to my Flight Timer, you'll hang in one spot until you'd normally be about to land. You are then 'teleported' to the landing spot.
For example: Booty Bay - Grom'Gol (Flight Time: 1:15)
Drink mug.
Hop on flight with 30 seconds left on Lightheaded Buff
In 30 seconds, when it fades, your flight will stop, and you will admire the scenery where you are for another 45 seconds, at which point you will be in front of the Grom'Gol flight master.
Tested as well with 3 seconds left, and I was admiring the view of the Bay in Booty Bay for a good 1:12.