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 that 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 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.Update 12/7/16 2:40pm: It appears that these fares are no longer available.Likely the third sale in JetBlue’s A December to Adventure promo, the airline is offering incredible fares from Boston (BOS), Fort Lauderdale (FLL) and New York (JFK) to Los Angeles (LAX) and San Francisco (SFO). Tickets start at just $128 round-trip or $64 one-way. Availability is wide-open for departures from December through June 2017, and these fares are even available for flights on the weekend. But be sure to act quick, as this sale probably will end tonight at 11:59pm ET.Airline: JetBlueRoute: BOS, FLL and JFK to LAX and SFOCost: $128+ round-tripDates: Book by December 7 for travel from December - June 2017Booking Link: Orbitz or ExpediaPay 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) or Chase Sapphire Preferred (2x on travel)Here are a few examples of what you can book:New York (JFK) to San Francisco (SFO) for $128 round-trip:New York (JFK) to San Francisco (SFO) for 7600 points + $11.20 round-trip: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.Boston (BOS) to Los Angeles (LAX) for 3,800 points + $5.60 one-way:Boston (BOS) to Los Angeles (LAX) for $128 round-trip:Fort Lauderdale (FLL) to Los Angeles (LAX) for $64 one-way:Fort Lauderdale (FLL) to Los Angeles (LAX) for $128 round-trip: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.If you’re able to score one of these tickets, please share the good news in the comments below!