Hover Charm – Harry Potter Lexicon

"I had to use a Hover Charm to get you into your bunk, I couldn’t lift you. You’ve been... Well, you haven’t been quite... You’ve been ill"
--Hermione Granger to Harry after he was attacked by Nagini at Bathilda's house (DH17)

The Hover Charm makes an object float in the air.

References from the canon

Dobby used this spell (without wand or incantation) to float Aunt Petunia's violet pudding in the air (CS2).
Hermione had to use one on Harry to get him into his bunk while he was unconscious after their visit to Godric's Hollow (DH17).