1. Los Angeles International Airport
11/11It's fitting that LAX is the best domestic airport for cheap flights as of this summer as it's a hub or focus city for more airlines than any other airport in the country, including Alaska, American, Delta, United, JetBlue and Southwest Airlines. Its 35 deals over the first half of the year were the most of any U.S airport, with Scott's Cheap Flights members having an average of 1.5 chances per week to score big savings depending on their departure airport.