Using maaser money to pay for tickets to go visit parents? For myself, my wife and my children?
It is permitted to use your maser money for it, if needed. The reason is that although we have a mitzva to visit a parent, the child does not have the obligation to pay for the expense. Therefore, it is considered a mitzva expense that is not incumbent on the person, and permitted to use maser money. It should be noted that the child can only take off the expense of the basic flight, not for an expensive seat, extra luggage etc. Additionally, whatever expenses you are saving because of your trip, (you now don’t have to pay for supper, etc.) have to be deducted from what you are taking from maser, because you would have had these expenses regardless, and it isn’t because of the mitzva.