I didn't think it possible but Hawaiian Airlines' Honolulu and Kahului flights are even cheaper than last week—and by as much as 45 percent! Round-trip rates start at $245 (Kahului flights from Oakland and San Jose), but the deepest discounts can be found on the Honolulu routes from Phoenix (the aforementioned 45 percent) and from San Diego (33 percent) since last week. Prices on all routes went down except for Las Vegas/Honolulu's, which only hiked 6 percent. - Mitchell Tsai