In the midst of the multifaceted horror of modern air travel, this is one exception I happened upon the other week: bmi regional. Small but fast planes from some twenty plus years ago, and a flight attendant who apparently modeled herself after a 1960s movie star — Cool Britannia at its best. Out of more than half a dozen plane trips during the past few weeks, this was the only one that was on time. When I booked it, I read that an airline this small cannot survive in today’s market. They seem to disagree…