The word(s) "heaven" appears 287 time(s) in 275 verse(s) in Quran in Mohsin Khan translation.

(131) [As Shaitan (Satan) has barred them from Allah's Way] so they do not worship (prostrate themselves before) Allah, Who brings to light what is hidden in the heavens and the earth, and knows what you conceal and what you reveal. [Tafsir At-Tabari]

(132) Is not He (better than your gods) Who created the heavens and the earth, and sends down for you water (rain) from the sky, whereby We cause to grow wonderful gardens full of beauty and delight? It is not in your ability to cause the growth of their trees. Is there any ilah (god) with Allah? Nay, but they are a people who ascribe equals (to Him)!

(133) Is not He (better than your so-called gods) Who originates creation, and shall thereafter repeat it, and Who provides for you from heaven and earth? Is there any ilah (god) with Allah? Say: "Bring forth your proofs, if you are truthful."

(134) Say: "None in the heavens and the earth knows the Ghaib (Unseen) except Allah, nor can they perceive when they shall be resurrected."

(135) And there is nothing hidden in the heaven and the earth but it is in a Clear Book (i.e. Al-Lauh Al-Mahfuz).

(136) And (remember) the Day on which the Trumpet will be blown - and all who are in the heavens and all who are on the earth, will be terrified except him whom Allah will (exempt). And all shall come to Him, humbled.

(137) And you cannot escape in the earth or in the heaven (from Allah). And besides Allah you have neither any Wali (Protector or Guardian) nor any Helper.

(138) (Allah says to His Prophet Muhammad صلى الله عليه وسلم): "Allah (Alone) created the heavens and the earth with truth (and none shared Him in their creation)." Verily! Therein is surely a sign for those who believe.

(139) Say (to them O Muhammad صلى الله عليه وسلم): "Sufficient is Allah for a witness between me and you. He knows what is in the heavens and on earth." And those who believe in Batil (all false deities other than Allah), and disbelieve in Allah and (in His Oneness), it is they who are the losers.

(140) And if you were to ask them: "Who has created the heavens and the earth and subjected the sun and the moon?" they will surely reply: "Allah." How then are they deviating (as polytheists and disbelievers)?