Update: Some offers mentioned below are no longer available. View the current offers here.We often choose not to write about cheap flights on budget airlines, like Spirit, because of the extra fees and potential frustration for travelers, but today’s deal is pretty unique. Rather than a cheaper rate on a particular route or destination, Spirit is offering $50 off almost any flight (with a few exceptions) for travel between August 25 and September 2 if you book by midnight tonight.To take advantage of the deal, enter promo code “50OFF” on Spirit’s homepage when booking. Even with the discount, you’ll still be subject to the regular extra fees, but the base fare will be reduced on the checkout page. With lower base fares, you might receive a reduced discount, as you’ll see in the examples below.Also keep in mind that Spirit flights often come along with many additional fees, such as a fee for carry-on bags ($26-100), checked luggage ($21-$55), seat selection ($1-50), and food and drink.Airline: SpiritRoutes: LAX-LAS, LGA-DFW, ORD-BWI, LGA-FLL, and many other optionsCost: $50 discount on most routes ($25 in each direction)Dates: August 25, 2015 - September 2, 2015Booking Link: SpiritPay With: American Express Premier Rewards Gold, Citi Prestige or Chase Sapphire Preferred CardHere are a few examples of what you can book:Los Angeles (LAX) to Las Vegas (LAS) for $68 on Spirit:Los Angeles (LAX) to Las Vegas (LAS) for $68 on Spirit.New York (LGA) to Dallas (DFW) for $82 on Spirit:New York (LGA) to Dallas (DFW) for $82 on Spirit.Chicago (ORD) to Baltimore (BWI) for $116 on Spirit: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.Chicago (ORD) to Baltimore (BWI) for $116 on Spirit.New York (LGA) to Fort Lauderdale (FLL) for $186 on Spirit:New York (LGA) to Fort Lauderdale (FLL) for $186 on Spirit.Maximize Your PurchaseDon’t forget to use a credit card that earns additional points on airfare purchases, such as the 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!