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.Delta has shared the details of a flash sale on award flights to and from New York City (LGA) when you book by tomorrow (October 12) at 11:59pm. Book flights from just 5,000 SkyMiles each way to cities such as Atlanta (ATL), Chicago (ORD), Detroit (DTW) and Orlando (MCO). The sale is valid for departures from December 1 through December 20, 2016.Remember that if you’re in need of SkyMiles, consider applying for one of Delta’s co-branded American Express business cards, which are both offering increased welcome offers. The Gold Delta SkyMiles® Business Credit Card from American Express is offering 30,000 SkyMiles after you spend $1,000 within the first three months of account opening. Meanwhile, the Platinum Delta SkyMiles® Business Credit Card from American Express currently features a welcome bonus of 35,000 SkyMiles and 5,000 MQMs after spending $1,000 within the first three months.Airline: DeltaRoute: Domestic flights to/from LGACost: 5,000 miles+ one-way in economyDates: December 1 - 20, 2016Booking Link: DeltaPay With: Chase Sapphire Reserve, Premier Rewards Gold Card from American Express, Citi Prestige Card or Chase Sapphire PreferredHere are a few examples of what you can book:New York (LGA) to Chicago (ORD) for 5,000 miles and $5.60 one-way:New York (LGA) to Chicago (ORD) for 5,000 miles and $5.60 one-way.New York (LGA) to Orlando (MCO) for 5,000 miles and $5.60 one-way:New York (LGA) to Orlando (MCO) for 5,000 miles and $5.60 one-way.New York (LGA) to Atlanta (ATL) for 8,000 miles and $5.60 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.New York (LGA) to Atlanta (ATL) for 8,000 miles and $5.60 one-way.New York (LGA) to Detroit (DTW) for 10,000 miles and $5.60 one-way:New York (LGA) to Detroit (DTW) for 10,000 miles and $5.60 one-way.Maximize Your PurchaseDon’t forget to use a credit card that earns additional points on airfare purchases, such as the 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!