depends on kids
my old kid can travel with us as young as she was 2 months, no problem at all.
the young one, I am afrard to bring her on any plane now, still remember she cried all the way from Ottawa to Dominica, for 4 hours, not joking, same crying when back to Ottawa. At that time, she was a little older than 1 yrs. Again no fun at all in resort, just exhausted kids and exhausted parents.