1. Fly LAX to Barcelona - July 2017
American Airlines will fly you from LAX (Los Angeles) to BCN (Barcelona) for $805 round trip, starting July 19 through August 17th, 2017.
Or you could wait until December 2017 and fly from LAX to BCN for $367 roundtrip. Yes, it is that cheap. According to Kayak, you can fly Norwegian airlines, non-stop, from Los Angeles to Barcelona for less than it costs to fly to New York or even Chicago.