David Beckham used it to light a cauldron after the plane, also carrying Princess Anne and Locog chair Lord Coe, arrived at a Cornish air base.
Flight BA2012, a gold-coloured A319 named The Firefly, was greeted at RNAS Culdrose by cheering crowds.
After Friday's welcoming ceremony, the flame flies on Saturday to Land's End for the start of an 8,000 mile relay.
The Princess Royal carried the transportation lantern containing the flame from the aircraft and on to the tarmac.
It was transferred to a London 2012 torch and David Beckham lit a cauldron, to mark the flame's arrival on UK soil.
He said: "It's a very proud moment for everybody.
"Seb (Coe) and the team have done an incredible job. I'm very proud to be part of this team...