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 American Express Platinum Card, 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 Orbitz or Expedia’s courtesy cancellation if you’re unable to get the time away from work or family.Whoa, Nelly! We’ve seen amazing fares to Hawaii for months, but it’s been a little while since ticket prices dropped below $300 round-trip non-stop. The deals are available from a number of US cities, but the nonstop fares primarily originate from the northwest coastline cities.To book, head to Google Flights and plug in your desired departure city. After finding dates that work best for you, book with the airline directly or with an OTA such as Expedia or Priceline. If you want to make sure that your ticket includes a carry-on bag, you’ll want to use Google Flights’ newest feature, which allows you to filter out no-carry-on fares.Of course, make sure to keep an eye on Hawaii’s erupting Kilauea volcano, which may affect flight plans and in extreme cases, traveler safety. (As TPG can personally attest, escaping an active eruption is no fun.)Airline: United, AlaskaRoutes: SEA/PDX/SMF/OAK to HNL/KOA/LIH/OGGCost: $297+ round-trip in economyDates: May, August-November 2018Booking Link: Orbitz, Expedia or directly with the airlinePay With: The Platinum Card from American Express (5x on airfare), Chase Sapphire Reserve, Premier Rewards Gold Card from American Express, Citi Prestige (3x on airfare plus excellent trip delay insurance) or Chase Sapphire Preferred (2x on travel)Seattle (SEA) to Lihue (LIH) on Alaska Airlines for $297 round-trip in May:Oakland (OAK) to Kona (KOA) on Alaska Airlines for $297 round-trip in May/June:Portland (PDX) to Maui (OGG) in August for $362 round-trip on United:Sacramento (SMF) to Maui (OGG) in August for $362 round-trip on United: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.Seattle (SEA) to Honolulu (HNL) in October for $362 round-trip on United: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, American Express Premier Rewards Gold or Citi Prestige (3x on airfare) or the Chase Sapphire Preferred Card (2x on all travel purchases). Check out this post for more on maximizing airfare purchases.H/T: The Flight Deal