The blaze in 2002 killed eight members of the same family in Birkby.
Shahid Mohammed, 37, was sentenced to life imprisonment on Wednesday, serving a minimum of 23 years.
It follows his conviction on Tuesday for the murders of three generations of the same family after a house fire in Birkby, Huddersfield, in 2002.
In a statement, the Chisti family thanked the police, witnesses at the trial and the court staff.
Mohammed fled to Pakistan after the fire, where he was caught in 2015 after a joint operation between West Yorkshire Police, the National Crime Agency and the Pakistani Authorities. He was extradited back to the UK in October 2018.
Following a five-week trial at Leeds Crown Court, Mohammed was found guilty by of eight counts of murder of five children and three adults, and of one count of conspiracy to commit arson.