Taking their Permission before Leaving

Question :

Does one have to obey one's parents in everything? For example, in leaving the house for any reason and to go to any place or to take up some work?

Answer:

It is obligatory to obey parents, except in the disobedience of Allah Almighty.

Allah Almighty said:
"Nor shout at them but address them in terms of honor. And lower unto them the wing of submission and humility through mercy, and say: My Lord! Bestow on them Your Mercy as they did bring me up when I was small."

And Allah Almighty's saying:
"And We have enjoined on man to be good and dutiful to his parents, but if they strive to make you join with Me (in worship) anything (as a partner) of which you have no knowledge, then obey them not."

Al-Birr, (or being "dutiful" to them) is realized by serving them and executing their commands according to one's ability, and being kind and having mercy on them. it is also a part of Al-Birr to ask their permission before traveling on a journey that is not obligatory for example, voluntary Jihad, business, or a vacation. If the journey is obligatory for one to perform - like the case defensive war, the obligatory Hajj when all of its conditions are met, and going out to seek the obligatory types of knowledge, etc. then one is allowed to go without taking permission from one's parents. However, it is better to appease them by informing them of the benefit of going and the Islamic ruling regarding doing so in a manner that might result in their approval, for the Prophet ﷺ said :
"The pleasure of the Lord is in the pleasure of the parents; the anger of the Lord is in the anger of the parents."

And Allah knows best.

Source:
Ibn Jibreen
Fatawa Islamiyah, Vol. 7 Pages 301-302