United Airlines offers roundtrip flights to Hawaii from select cities in the U.S. for as low as $414.59. (Click on "United.com" in the top line to see this sale; all taxes are included.) That's tied with our mention from last week and the lowest current rate we could find for select routes by $4. This price is valid on flights departing from Portland, OR, (PDX) to Maui, HI, (OGG) on November 16 with return on November 23. Roundtrip purchase is required. Book this travel deal by November 6 for travel through Feb 11, 2015. Click here to see more routes.