Update: Some offers mentioned below are no longer available. View the current offers here.Want to see the latest flight deals as soon as they’re published? Follow The Points Guy on Facebook and Twitter, and subscribe to text message alerts from our deals feed, @tpg_alerts.Airfare deals are typically only available on limited dates. We recommend you use Google Flights to find dates to fly, then book through an online travel agency such as Orbitz or Expedia, which allows you to cancel flights without penalty by 11pm Eastern Time within one day of booking. However, if you’re using The Platinum Card® from American Express, you’ll need to book directly with the airline or through the Amex Travel portal to get 5x MR points. Remember: Fares may disappear quickly, so book right away and take advantage of Orbitz or Expedia’s courtesy cancellation if you’re unable to get the time away from work or family.Hawaii fares are back on sale, and some routes are cheaper than ever before. We are seeing a couple of routes at just $333 round-trip, and many more are available for less than $400 round-trip. Not all of these fares require annoying connections to get a cheap price; many are nonstop.To find these low fares, head to Google Flights and plug in your desired departure and destination cities. After finding the dates that work best for you, book directly with the airline or with an OTA such as Expedia or Priceline.Airlines: Hawaiian, American, UnitedRoutes: SAN/PDX/PHX/SEA/LAX/SFO/DEN/IAH to LIH/KOA/OGG/HNLCost: $333+ round-trip in economyDates: August-June 2019Booking Link: Orbitz, Expedia or directly with the airlinePay With: The Platinum Card® from American Express (5x on airfare), Chase Sapphire Reserve, Citi Prestige (5x on airfare plus excellent trip delay insurance) or Chase Sapphire Preferred Card (2x on travel)Here are a few examples of what you can book:San Diego (SAN) to Lihue (LIH) in October/November for $333 round-trip on Hawaiian:Portland (PDX) to Kona (KOA) in September for $333 round-trip on Hawaiian:Phoenix (PHX) to Kahului, Maui (OGG) in October/November for $355 round-trip nonstop on American:Seattle (SEA) to Honolulu (HNL) in October for $363 round-trip nonstop on Hawaiian:Los Angeles (LAX) to Kona (KOA) in August for $367 round-trip nonstop on United:San Francisco (SFO) to Kahului, Maui (OGG) in September for $377 round-trip nonstop on Hawaiian: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.Denver (DEN) to Lihue (LIH) in September for $414 round-trip on American:Houston (IAH) to Lihue (LIH) in August for $422 round-trip on United: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, or Citi Prestige (5x on airfare) or the Chase Sapphire Preferred Card (2x on all travel purchases). Check out this post for more on maximizing airfare purchases.