Delta Air Lines’ (DAL) financial stability is challenged by high operating expenses and low liquidity. Elevated labor costs and fuel costs exacerbate the strain on the company's bottom line. Also, low liquidity impedes its ability to meet obligations, in turn making it an unattractive choice for investors’ portfolios.Let’s delve deeper.Southward Earnings Estimate Revision: The Zacks Consensus Estimate for current-quarter earnings has been revised 16.13% downward over the past 60 days. For the current year, ...