United Airlines via ShermansTravel offers United Airlines Roundtrip Flights to Hawaii from select cities in the U.S. for as low as $361.60. (On the Shermans Travel landing page, click on "United.com" in the main paragraph to see this sale; we found this price on October 23 with return on October 29.) That's the lowest price we could find for select routes by at least $99. Book this travel deal by August 31.

All prices, dates, and booking details were valid at the time of publication.