Junead Khan, 25, intended to stage a car crash near Lakenheath and Mildenhall, large U.S. airbases in eastern England, and then kill American airmen using a knife and detonating a bomb.
Khan was sentenced today at London's Kingston Crown Court. He was also found guilty of preparing to go join the Islamic State in Syria along with his uncle Shazib Khan.
According to British law, prisoners sentenced to life sentences are eligible for parole after serving a minimum term. In Khan's case, he has to serve a minimum of 12 years.
Police arrested Khan last July before he was able to carry out his plan. This led to the cancellation of July 4 celebrations at the airbases, home to around 15,000 Americans, including service families.
After searching his home in Luton, officers found he had been exchanging messages with Abu Hussain, an Islamic State fighter in Syria, and the two had talked about the plan in question. Officers also found a bomb-making manual and Islamist material.
The man Khan was in contact with turned out to be Junaid Hussain, a fighter recently killed in a U.S. drone strike in Raqqa.