Delta Reports Wider Quarterly Loss  CHICAGO (Reuters) - Delta Air Lines Inc. &lt;A HREF="http://www.investor.reuters.com/FullQuote.aspx?ticker=DAL.N target=/stocks/quickinfo/fullquote"&gt;DAL.N&lt;/A&gt;, which is  racing to cut costs to avoid bankruptcy, on Wednesday reported  a wider quarterly loss amid soaring fuel prices and weak  domestic airfares.