Update: Some offers mentioned below are no longer available. View the current offers here.Great news: Two-for-one flight deals are once again available for destinations in Europe. Singapore Airlines is currently running a sale where you can fly business class nonstop to Frankfurt from $1,999 per person round-trip. Singapore Airlines’ product is one of TPG’s best business-class options to Europe, while Frankfurt itself makes an excellent gateway city if you plan on exploring more of the continent. The best part: These tickets are assigned to the “D” fare class, meaning you’ll earn 100% Premier Qualifying Miles (PQMs) with United for your flights.Airline: Singapore AirlinesRoute: JFK to FRACost: $1,999+ per person round-trip in business classDates: February 2016 through March 2016Elite Mileage Earning: At least 7,713 PQMsFare Class: DBooking Link: Singapore AirlinesPay With: American Express Premier Rewards Gold, Citi Prestige or Chase Sapphire PreferredHere are a few examples of what you can book:New York (JFK) to Frankfurt (FRA) for $1,999 per person round-trip on Singapore Airlines in February (earns 7,713 PQMs):New York (JFK) to Frankfurt (FRA) for $1,999 on Singapore Airlines in February.New York (JFK) to Frankfurt (FRA) for $1,999 per person round-trip on Singapore Airlines in March (earns 7,713 PQMs):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 (JFK) to Frankfurt (FRA) for $1,999 on Singapore Airlines in March.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!