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.Update: Some offers mentioned below are no longer available. View the current offers here.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 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 Amex Travel portal to get 5x MR points. Remember: Fares may disappear quickly, so book right away and take advantage of Expedia’s courtesy cancellation if you’re unable to get the time away from work or family.The great deals to Hawaii continue! A few days ago we told you about super-rare sub-$300 round-trip flights from the mainland US to the 50th state. While those are gone, there’s a new crop of Hawaii deals available Christmas Day. Unfortunately, these fares aren’t available into the summer. Some city pairings require January-February departures only. However, others stretch from January all the way to the end of May.You don’t need any tricks to get these prices, just use Google Flights to set the dates you want, then book on Expedia or directly with the airline itself.Airline: Hawaiian, Alaska, American AirlinesRoutes: SAN/SJC/SFO/LAX/PHX/BWI to HNL/OGG/KOA/LIHCost: $335+ round-trip in economy classDates: January to May 2018Booking Link: Expedia or with the airline directlyPay With: The Platinum Card from American Express (5x on airfare), Chase Sapphire Reserve, Citi Prestige (5x on airfare) or Chase Sapphire Preferred Card (2x on travel)Here are a few examples of what you can book:San Diego (SAN) to Lihue (LIH) for $335 round-trip via Expedia:San Jose (SJC) to Honolulu (HNL) for $336 round-trip nonstop via Expedia: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.San Jose (SJC) to Kahului (OGG) for $341 round-trip nonstop via Expedia:San Francisco (SFO) to Kona (KOA) for $363 round-trip via Expedia:Los Angeles (LAX) to Lihue (LIH) for $406 round-trip nonstop via Hawaiian:Phoenix (PHX) to Honolulu (HNL) for $406 round-trip nonstop via Expedia:Phoenix (PHX) to Kona (KOA) for $418 round-trip nonstop via Expedia:Baltimore (BWI) to Honolulu (HNL) for $590 round-trip via Expedia:Maximize Your PurchaseDon’t forget to use a credit card that earns additional points on airfare purchases, such as the American Express Platinum Card (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.If you’re able to score one of these tickets, please share the good news in the comments below.