The cheapest time of year to fly to Hawaii is during the tourism industry's dual low seasons, which run from Easter weekend through the middle of June, and September through the middle of December. Exceptions to these periods include Thanksgiving week and the Aloha Festival in mid-September.
Even during the tourism low seasons, there are several strategies that ensure even lower airfare prices. Travelers should attempt to travel during the week, particularly on Tuesday, Wednesday or Thursday, because weekend plane tickets are generally more expensive. Travelers should also attempt to fly out of airports that charter a number of flights to Hawaii, because demand for individual plane seats should be lower than at airports where flights are harder to book.