aerial stroll; leisurely flight
Refers to a relaxed, sightseeing-oriented ride in a helicopter, small airplane, or similar aircraft, emphasizing the enjoyment of the view rather than transportation.
We enjoyed an aerial stroll by helicopter over the weekend.
This sightseeing flight really feels like a stroll in the air.
遊覧飛行 is a more formal term for a sightseeing flight, while 空中散歩 has a more casual, poetic nuance emphasizing leisurely enjoyment.
Compound of 空中 (air, mid-air) and 散歩 (walk, stroll), literally 'air stroll'. The exact origin is uncertain, but it is a modern coinage likely influenced by the concept of leisurely aerial sightseeing.