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.
How far to book in advance: Seven weeks for domestic flights. Book 11 to 12 weeks out for international flights. The worst day to buy: Within 11 days of your flight. One day before the flight was the absolute worst. The best fares for Thanksgiving: For Thanksgiving 2012, the best day to buy was, on average, 96 days (about 14 weeks) before the flight. The bottom line: Do your homework before booking any flight, and make sure you've got the right tools to set yourself up for the best fares.