Idioms with FLY

fly high
to be very successful
His design company has been flying high recently.

on the fly
quickly and often without preparation
We often had to make decisions on the fly.

fly off the handle
to become very angry
Be careful. He flies off the handle very easily.

with flying colors
very successfully
She passed her exams with flying colors.

fly in the face of something
to be the opposite of something that is usual or expected
His explanation flies in the face of the evidence.