Update: Some offers mentioned below are no longer available. View the current offers here.Hawaii is a fantastic destination, but traveling between the various islands within the state can get pricey. That’s where this Hawaiian Airlines 90th anniversary deal comes in: Inter-island flights are under $100 round-trip between any neighboring islands. Prices are listed at $90, in honor of the airline’s 90th birthday, for all neighboring island flights, but we’re seeing some for cheaper at $84 round-trip. Book today for travel between Jan. 7 and March 6, 2020. Pair this deal with your flights booked from previous Hawaii fare sales from the mainland to save money for special excursions on site.To search, head to Google Flights and enter your origin and destination cities. Scroll through the calendar function to find dates and prices that work for you. Finally, click through to book directly with the airline or through an OTA like Priceline or Expedia. But move quickly: This deal is only good through the end of today, Nov. 11.Airlines: Hawaiian AirlinesRoutes: neighboring island fares between HNL/OGG/KOA/LIH/ITO/JHM/LNYCost: from $84 round-tripTravel Dates: Jan. 7 to March 6, 2020Pay With: The Platinum Card® from American Express (5x on airfare booked directly with the airline), Citi Prestige® Card (5x on airfare), Citi Premier® Card (3x on airfare), Chase Sapphire Reserve (3x on travel), American Express® Gold Card (3x on airfare booked directly with the airline or amextravel.com) or Chase Sapphire Preferred Card (2x on travel)The information for the Citi Prestige card has been collected independently by The Points Guy. The card details on this page have not been reviewed or provided by the card issuer.For the latest travel news, deals and points and miles tips please subscribe to The Points Guy daily email newsletter.Sign up for our daily newsletterEmail addressSign upI would like to subscribe to The Points Guy newsletters and special email promotions. The Points Guy will not share or sell your email. See privacy policy.Here are a few examples of what you can book:Oahu (HNL) to Kauai (LIH) in early February for $84 round-trip:Oahu (HNL) to Kona (KOA) in late January/early February for $84 round-trip:Oahu (HNL) to Hilo (ITO) in late February for $90 round-trip:Oahu (HNL) to Maui (OGG) in mid-January for $90 round-trip:Maximize your purchaseDon’t forget to use a credit card that earns additional points on airfare purchases, such as The Platinum Card® from American Express (5x on flights booked directly with airlines or American Express Travel), Chase Sapphire Reserve, American Express® Gold Card, Citi Premier® Card, Citi Prestige Card (5x on airfare) or the Chase Sapphire Preferred Card (2x on all travel purchases). To learn more, check out our post on the best cards for airfare purchases.To listen to an interview with Brian Kelly talking to the CEO of Hawaiian Airlines listen here: