The document compares the financial performance of American Airlines and Continental Airlines from 2003 to 2008 using various liquidity, solvency, and profitability ratios. Overall, Continental Airlines performed better in terms of liquidity and solvency ratios, indicating it had a stronger ability to pay short-term debts and a lower reliance on debt financing. However, American Airlines showed stronger profitability, with higher gross profit margins and earnings per share over most of the period. While both airlines struggled in 2008, Continental generally demonstrated better financial stability in the preceding years based on the ratios analyzed.