Blake you are correct about Google Flight using same software ............ Google has purchased ITA so that makes sense ............. however I do not see the same functionality on Google Flights ........... ITA allows you to put in a range of number of days for your stay ......... such as 8-11 days ............ enter your day of departure earlier then your ideal date ............ you will get a 30 day calender listing all flights prices for stays of 8-11 days for a 30 day period ......this will allow you to find the best deals by just moving your ideal dates forward or backwards or extend your stay to maximize your vacation value.