Jet airliner
![Trident 62](/Images/godic/202501/21/Trident_625444.jpg")
![Cutaway of an Airbus A300 jet airliner showing cabin and cargo deck.](/Images/godic/202501/21/Airbus_A300_cross_section5444.jpg")
![Sapphire test-bed Lancastrian VM733 demonstrating in 1954 on the two jets with the two inner Merlins feathered](/Images/godic/202501/21/Avro_Sapphire_Lancastrian_VM733_Coventry_06.545445.jpg")
![DH.106 Comet 1 of BOAC at London Heathrow on 2 June 1953](/Images/godic/202501/21/DH_Comet_1_BOAC_Heathrow_19535445.jpg")
A jet airliner (or jetliner, or jet) is an airliner powered by jet engines (passenger jet aircraft). Airliners usually have two or four jet engines; and three are less common.
Most airliners today are powered by jet engines because they are capable of high speeds and generate sufficient thrust to power large capacity aircraft. Early airliners, introduced in the 1950s, used the simpler turbojet engine, quickly supplanted by turbofans, which have lower noise levels and fuel consumption.