Can a 7th month pregnant woman have her water break and travel 5 hrs on a plane? Air pressure is not allowed.?

I am astounded by the STORY of Sarah Palin's 5th birth. It is unbelievable that a 7 month pregnant woman would not go straight to the hospital after her water broke while she was in Texas. How could you get in a plane to Alaska instead of rushing to the nearest hospital? The air pressure of the airplane is not allowed for late term pregnancy.