Short answer: Probably. You do not say what (if anything) your existing Decree says about your absence. If there is no "right of first refusal" granting the other parent the right to have custody of the kids whenever you are away for some period (typically days, but sometimes as short as hours), then your plan makes perfect sense. No, you do not need your ex's permission to leave the State, although it might be courteous to inform him that you will be away, and where the children will be located (as well as a reassurance that his schedule will not be affected). If he objects, you may wish to have your decree, and any correspondence, reviewed by qualified counsel.
Answered on Sep 12th, 2014 at 8:10 PM