Divorce refers to the final termination and cancellation of a marital union, its legal duties and responsibilities, and the bonds of matrimony between the parties. It requires a legal process and may involve issues pertaining to spousal and child support, child custody, property distribution and division of debt.
If you have joint custody by the courts to see your children and you can afford to fly to see them or, have them flown to you then you should do so. If this is a financial difficulty then no, you do not have to see your children out of State. If you find it does not fit into your lifestyle or you do not have adequate care for the children when they are with you and you are away working then you can go back to court and give full custody to your ex. If you love your children and it is financially possible you should at least spend one or two weeks of holidays with them.