noun, noun or participle which takes 'suru', intransitive verb
Used as a noun for the act or state of flying, and as 飛行する for something flying through the air. It can also appear in compounds and formal contexts related to aviation.
旅客機が雲の上を飛行している。
A passenger plane is flying above the clouds.
長時間の飛行で少し疲れた。
I got a little tired from the long flight.
飛行の安全には天候の確認が欠かせない。
Checking the weather is essential for flight safety.