Ashya King has left hospital in Spain and is on his way to Prague for proton therapy to treat a brain tumour.
The five-year-old left the Materno Infantil hospital in Malaga this morning (Monday).
He travelled to the airport with his mum Naghmeh in an ambulance. His dad Brett followed behind in a taxi.
Southern Malaga's Children's and Maternity Hospital said Ashya was in a stable condition and able to fly to Prague for 'alternative treatment'.
Juan Isidro Fernandez Diaz, the family's lawyer, told reporters the boy was 'in perfect condition to travel', and on Saturday was playing with toys and his parents and brother.
Ashya was removed from Southampton General Hospital on 28 August by his parents against doctors' advice following a disagreement over his treatment.
The Kings took Ashya, along with his six siblings, to Spain sparking an international manhunt.
They were arrested in Spain on Saturday but were released four days later after British prosecutors withdrew an international arrest warrant.
Since then, the British High Court granted the Kings' permission to pursue the treatment, provided they could cover the cost and started soon.
Kids'n'Cancer, a charity which raises money to pay for children to have treatment, set up an online page after hearing about the family's situation and says they have been inundated with donations.