There was a bad 90s sitcom where there was a young witch that flew around on a vacuum cleaner XD
At a wild guess if they're imbuing magic into something to give it anti-gravitational/"flight" power then a broom would probably be easier because it's small and easier to leave around unobtrusively (not too many people might notice a broom especially if it's shoved into some hedge or something, chairs etc might look a little bit out of place in the middle of a forest XD).
Chair would definitely be more comfortable and I reckon unless magicking it was too hard she totally should have gone couch or bed and just had a spot of tea and a book while waiting to get to her destination in business class ;D
Vacuum cleaner witch eh? Reminds me of a character in Hunter x Hunter, though she's not a witch.
I would vote no to flying with broomstick, maybe the best way to fly is really using a magic carpet? They're soft and compact at the same time.
Heheheh if we're talking about VIP way of flying, maybe it's best to just make the whole house fly, like in the movie Up... though parking would be problematic >_>.
Thank you for entertaining this wacky discussion with me, Fyn XD.