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.
This is the best time to buy a plane ticket. If you're looking to get the best price on airfare, start shopping nearly eight weeks before you plan to leave. The best time to buy domestic airplane tickets in 2015 was 54 days in advance, according to a report from CheapAir.com that analyzed almost three million itineraries. But be warned: it's not an exact science.