Answer
Try the major travel websites, such as expedia.com, travelocity.com, and cheaptickets.com. once you have found from those web sites what airline has the best deal, then go to the web site of that airline and book the ticket there (this will save you on fees that the large travel sites charge for booking).you may find better deals by going through other cities, such as london or frankfurt. i recently saw that virgin atlantic is having a huge sale on london to boston. see if they fly a route starting in amsterdam.
