Do you think there is a best time to book. In other words I have been watching the fares and for May 21 and there is lots of space on the flight I need. The price was the same for a week and now it dropped $30. Someone once told me to book after 10:00pm. That is when they go in and lower fares. I guess there is no way of knowing how each airline does things unless you have an inside scoop.