Phoenix Sky Harbor International Airport may not be the largest airport in the country, but it does have some perks. NerdWallet ranked the airport seventh in the nation for summer travel. Using statistics such as average Yelp review, percentage of summer flights canceled, and average summer delay times, Phoenix ranked among the best airports in the country. NerdWallet found travelers flying out of Phoenix experienced shorter delays, with just 3 percent of summer flights having delays over 30 minutes…