A US District Court hearing has been scheduled for terror suspects Baba Ahmad and Syed Talha Ahsan in Connecticut today, according to officials.
The two men are reportedly heading to the state, where an internet service provider was allegedly used to host one of the websites, aboard one of the planes.
Hamza and the other two suspects are on the other aircraft destined for New York, according to the BBC.
Abu Hamza was in custody in New York today awaiting trial on charges of bombing two United States embassies in Africa.
Radical cleric Abu Hamza has appeared in front of a New York court following his extradition from the UK. He did not enter a plea.
Abu Hamza and four other terror suspects have left prison and are on route to the US where they face terror charges.