The most common and most likely answer to this crossword clue is the 7 letter word ZOOMING
Z
O
O
M
I
N
G
Buddy explains!
The straight part
We know that "Flying" is the straight/definition part of the clue. The straight part is often a synonym or definition, in this case flying = zooming.The cryptic/wordplay part
In cryptic crossword there's often an wordplay/cryptic part as well.This part involves a more complex hint, such as an anagram, homophone, hidden word, etc.
Sadly, We don't have an explanation for this specific crossword clue yet.
What does ZOOMING mean?
ZOOMING verb- To communicate with someone using the Zoom videoconferencing software.
- To move fast with a humming noise
- To fly an airplane straight up
- To move rapidly
- To go up sharply
- To change the focal length of a zoom lens
- (used with in or out) to manipulate a display so as to magnify or shrink it
- A sound or motion that zooms.