Air fare from the U.S. to London Gatwick is extremely variable and therefore presents an enormous problem in attempting to provide the R.O.A.T. travelers with adequate information. The fares depend upon the day you will leave as well as the length of your stay. Additionally, there is a wide variance in prices between cities, as you will see below, so some may elect to drive to a city in the U.S. that is nearby but substantially cheaper to take advantage of the savings. I have attempted to provide you with information that is accurate as of the 9th of March 2019. You should be aware that fares tend to increase the closer you get to departure. So, if you find an acceptable fare, I would strongly recommend that you lock it in early to insulate yourself against these increases.