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.
The online airfare shopping engine tracked prices from 320 days in advance up until the day before a flight and found the prime booking window was generally one to four months ahead of departure. The lowest price of a ticket changed around 70 times when it was for sale, the report found. By booking on the cheapest day, fliers saved an average of $201 on airfare, excluding the 14 days before a flight since fares are much higher then. If those two weeks are included, the difference rises to $319. Of course, there are no guarantees.