Why Can Objects Fly and People (other than Dark Wizards) Can't?

Question

While looking into broomsticks and their use in Harry Potter, I found that there was no spell or charm that would make a human fly. Originally, once they found ways to make objects fly, they needed to use objects that they could have handy and keep in the house, but which would not seem suspect to muggles. One easy choice was the broom, since it'd be inconspicuous in any home and would always be handy.

But I can't find any mention of spells, charms, or enchantments are used to make brooms fly. However, Voldemort and Snape have both flown on their own. So the only examples of flying people are two dark wizards.

What is it about the magic used to make a broom fly but that only dark wizards seem to want to use it on themselves? (Or, perhaps, did Snape and Voldemort use magic on, say, their clothes or something different?)

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Addendum: In Quidditch Through the Ages it specifically states that there is no known spell that makes a human fly.

Answer 1

According to J K Rowling, people could fly without a broom, just it is extremely difficult and risky. (more so than Wandless magic)

JK Rowling. Yes, nearly all wizards use wands, which makes magic easier to channel. Wandless magic is sophisticated and takes more talent.
Q. So would that work the same for brooms? Would more advanced wizards/witches not need a broom to fly?
JK Rowling. Exactly. Wands and brooms (and flying cars) are tools that channel magic. The most gifted can dispense with them.
Q. Are there many wizards/witches at Hogwarts who can do magic and fly without wands or brooms?
JK Rowling. No, there's a cultural tradition of using wands and broomless flight is (as you might imagine) very risky!
_(Source)

We could interpret Kennilworthy Whisp's "No spell yet devised enables wizards to fly unaided in human form" as referring exclusively to spells and not to wandless magic.

Answer 2

1. Your original premise seems to be disproven by the books ("I found that there was no spell or charm that would make a human fly" followed by dismissing Voldemort's example).

   Yes, Voldemort could fly (from DH) BUT so could Snape (also from DH). While Snape likes himself some Dark Arts, he would NOT "use something quite dark or possibly even harmful to others" that was bad to such an extent you would want to dismiss it out of hand.

   "No, he's not dead," said McGonagall bitterly. "Unlike Dumbledore, he was still carrying a wand...and he seems to have learned a few tricks from his master." With a tinge of horror, Harry saw in the distance a huge, batlike shape flying through the darkness toward the perimeter wall. (DH pg 599/482)

2. Also, I'm not 100% sure what was going on in SS/PS during the Quidditch game, but when Quirrell was jinxing Harry's broom to throw him off, Snape was counter-jinxing to keep Harry flying. It's not clear if he was levitating Harry or not.

3. In GoF movie, fake-Moody-Crouch was making Malfoy/ferret fly (or flip in the air at any rate). My only 2 concerns are whether that scene is in the book, and whether it was something SPECIFIC to animal form (meaning you could not do the same thing to a human). Since nobody tumbled on to him being a Death Eater from performing the trick - including McGonagall who saw it - it means it wasn't a Death Eater Special.

4. In DH, Charity Burbage (Muggle Studies teacher Voldemort murdered at the meeting) "was suspended upside down over a table". The movie shows her levitating, though you again run into "Voldemort exemption" here.

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As an aside, there's one more way to make a human fly - Animagus transform. If your Animagus form is flyable, you can fly. But that's cheating so it doesn't count.

Answer 3

I see a difference that I think the OP realizes but the responders don't. Moody was levitating malfoy (someone else). It is assumed one of the death eaters or Voldemort was levitating Burbage (someone else). So I think the question can be rephrased or broken down: is levitating someone the same as making them fly; and if they are the same, is there a difference between levitating yourself and levitating someone else.

Notice that you don't have to enchant a broom to fly each time; it was done at manufacture. You don't have to enchant the Golden Snitch each time. They are flying, not being actively levitated by a person. Given this distinction, I think the Malfoy and Burbage examples are unrelated to this discussion.

Answer 4

This probably isn't right, but wouldn't it make sense to say that brooms can fly if the person riding fuels it with their magic by willing it to fly. Brooms are made of wood, and in many tales wood has magical properties.Maybe the newer and better brooms are made out of better wood, and are more comfortable, aerodynamic which makes them easier to ride and be all around better.