Auto insurance is obviously different depending on the type of coverage you buy, but since the national average expenditure for car insurance is $795 a year and PA's average is $820, it can easily be inferred that Pennsylvanians are likely to pay a bit more on average for just about any type of coverage.
To answer that question, airfare shopping engine CheapAir.com monitored fares for more than 4 million flights in 2013 over a booking period ranging from 320 days in advance to one day in advance. Its researchers found that fares for domestic flights were lowest 54 days in advance.
Their findings seek to answer every traveler's No. 1 question regarding airfares: How far in advance should I book to get the cheapest fare? And they do. Sort of. The short answer: Seven weeks before takeoff. On average, fares bottomed out 49 days before the flight, then increased slightly, but remained steady until about a month out.