Update: Some offers mentioned below are no longer available. View the current offers here.JetBlue is back with a new two-day flash sale, with one-way deals around the US, Puerto Rico and several Caribbean and South American destinations. We’re seeing one-way fares starting at just $44. Some fares are even lower than what’s been published by the airline, so make sure to play with the dates and cities to get the lowest price.Keep in mind that all tickets are in JetBlue’s Blue class, which means checked bags aren’t included.Note that there are several blackout dates, including Sep. 28–October 1, Oct.12-14, Nov. 6-12 & Nov. 21 - Dec. 2. If you see a deal you like, don’t wait as this promotion expires on Sep. 13 at 11:59 PM!This is a good opportunity to use JetBlue TrueBlue points since award redemptions are tied to the cost of the ticket. You can transfer points from Citi ThankYou and Chase Ultimate Rewards to JetBlue at a 1:1 ratio, but a less attractive 250: 200 ratio from Amex Membership Rewards.To search, head to directly to JetBlue’s website and enter your origin and destination cities, or browse through the sale page. Scroll through the calendar function to find dates and prices that work for you. Finally, click through to book directly with the airline.Airline: JetBlueRoutes: Many routes served by JetBlue, see full list hereCost: $44 one-way or $87 round-tripDates: September – DecemberPay With: The Platinum Card® from American Express (5x on airfare booked directly with the airline), Citi Prestige® Card (5x on airfare), Citi Premier® Card, Chase Sapphire Reserve (3x on airfare), American Express® Gold Card (3x on airfare when booked directly with the airline) or Chase Sapphire Preferred Card (2x on travel)Here are a few examples of what you can book:Long Beach (LGB) to San Jose (SJC) for $43 one-way: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.Atlanta (ATL) to Orlando (MCO) for $48 one-way:Philadelphia (PHL) to Boston (BOS) for $48 one-way:Boston (BOS) to Pittsburgh (PIT) for $63 one-way:Ft. Lauderdale (FLL) to Grand Cayman (GCM) for $64 one-way:New York (JFK) to Worcester (ORH) for $92 round-trip:Atlanta (ATL) to Orlando (MCO) for $97 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). Check out this post for more on maximizing airfare purchases.