UPDATE 1-Alitalia commissioner says has liquidity - source

(Adds Alitalia statement on net debt, liquidity)

ROME, Oct 20 (Reuters) - Alitalia AZPIa.MI has enough liquidity to operate until the start of December, the Italian airline's bankruptcy commissioner told trade unions on Monday, according to a union source present at the meeting.

The commissioner, Augusto Fantozzi, also told the unions that he hoped to wrap up the sale of Alitalia assets to the CAI investor group by mid-November, the source told Reuters.

CAI plans to merge the profitable parts of Alitalia with domestic rival Air One. It is looking for a partner abroad.

Alitalia’s net debt at the end of August stood at 1.219 billion euros ($1.64 billion), up from 1.159 billion euros at the end of July, the company said in a statement.

At the end of August the airline had liquidity of 267 million euros, down from 338 million euros at the end of July. (Reporting by Alberto Sisto; editing by John Wallace)