jasdip, did you just COMPLAIN about the answer? LoL!!!!

In flight, huh. Which means, sometimes it's not in flight. Couldn't be an animal, I don't think any animal goes that fast. Planes go faster. I'll say

A helicopter

Oh Jean!! You got me! I guess I did. LOLOL

a falcon

the jet stream

a sneeze

Sounds like a sneeze to me - if you've ever seen one 'actually in flight' they can travel so far, it's kind of disgusting, really, lol!
Suzan J

Hummingbird?

I had to go to the dentist this morning so I'm getting in late for my answer but I agree with bigack. There's no question in my mind that it's a hummingbird, no matter what the right answer is!

Hummingbird is my guess also