Airspace is the portion of the atmosphere controlled by a country above its territory, including its territorial waters or, more generally, any specific three-dimensional portion of the atmosphere. It is not the same as outer space which is the expanse or space outside the Earth and aerospace which is the general term for Earth's atmosphere and the outer space within the planet's vicinity.

हवाई क्षेत्र का अर्थ है, वातावरण का वह क्षेत्र, जो कि किसी देश द्वारा नियंत्रित है, उसके क्षेत्र एवं जलीय क्षेत्र के ऊपर स्थित है, या साधारण रूप में कहें तो, वातावरण का कोई त्रि-आयामी भाग।