Does the father have to pay for the children to
    travel to visit their divorced mother?
Question

                the children from a previous
      marriage were living with me.their mother moved 400 miles away and remarried. she claims
      that it is my duty to provide the children with transportation to visit her. is that true?
Praise be to Allah.We put this question to Shaykh Muhammad ibn
    Saalih al-‘Uthaymeen, may Allaah preserve him, who answered as follows:
No, that is not correct, but if Allaah has made the husband
    rich and the wife’s position is average or less, then it is part of chivalry or
    manliness that he should pay for that – but it is not obligatory. And Allaah knows
    best.