The DC-9 Romney-Ryan campaign plane had an "minor mechanical issue" according to Ryan spokesperson Michael Steel. They held the place at Hobby Airport, putting them more than 85 minutes behind schedule.
It's believed that a leak in one of the lavatories in the back of the plane is the cause of the delay, but Steel would not confirm this.
The press corp's luggage was taken off the plane and put on the tarmac while technicians attempted to resolve the issue.
Ryan did eventually make it out of Houston in time for a scheduled appearance in Ft. Collins, Colorado on Wednesday afternoon.