Bidder wins space flight with DiCaprio

One lucky bidder has won an out-of-this world experience to join Leonardo DiCaprio onboard the Virgin Galactic voyage into orbit after laying down $US1.5 million($A1.55 million) during an auction at the Cannes Film Festival.

Movie mogul Harvey Weinstein put the ticket for the once-in-a-lifetime trip under the hammer at the AmfAR Cinema Against AIDS charity dinner at the Hotel du Cap-Eden-Roc in Antibes on Thursday night.

The winning bidder will sit right next to DiCaprio on the first commercial flight into space.

A date for Richard Branson’s expedition has not yet been set, as the aircraft is still in the final stages of a safety test program. The identity of the wealthy ’spaceman’ who won the auction item has not been revealed.