LOS ANGELES (Reuters) - The parent company of American Airlines is in talks to set up a broad venture with Japan Airlines Corp in a deal that could see the US carrier investing hundreds of millions of dollars in JAL, The Wall Street Journal cited sources as saying on Saturday.

AMR Corp has been in intensive negotiations for over a month to form a "far-reaching" joint venture with the Asian carrier and is willing to invest to secure an agreement, the Journal cited people familiar with the discussions as saying.

Any investment deal would give loss-making JAL, which posted 99 billion yen ($1.1 billion) of net losses in the April-June quarter, a much-needed capital infusion. JAL is in talks with several carriers about a cash infusion, according to separate media reports.

Sources have told Reuters that Delta Air Lines, the world's largest carrier, is engaged in closed-door discussions to take a minority stake in the Asian carrier, to expand its global footprint.

On Saturday, Japan's national broadcaster, NHK, reported that JAL was also seeking a capital injection of several billion yen from Air France-KLM.