The Boeing Business Jet series are variants of Boeing jet airliners for the corporate jet market, initially the 737 series airliners. This aircraft usually seats between 25 and 50 passengers within a luxurious configuration. The Boeing BBJ is primarily a 737 commercial airframe with modifications to provide for private jet service. The BBJ1 is based on a737-700 airframe, with elements from the 737–800.
The BBJ2 and BBJ3 are based on the 737–800 and 737-900ER series, respectively. All 11 models include changes to the airframe regardless of the BBJ series. Fokker Services are developing 1.5 meter wide windows for the BBJ in 2016.