go to Fly.com and search for the best available dates that will get you this great rate. Right now Sept-Dec seems to be offering these rates if you fly out and back on a weekday. When I did my search I found non stop flights from EWR to HNL on United for $465...that is such a great deal! Other cities that have been showing great flight deals are Dallas (DFW), Miami (MIA), and Detroit (DTW).
Remember if you are going to Honolulu, make sure to look for Groupons for >50% off activities.
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