3. As of noon trading, Southwest Airlines ( LUV) is up $0.14 (1.03) to $13.68 on average volume Thus far, 2.7 million shares of Southwest Airlines exchanged hands as compared to its average daily volume of 7.2 million shares. The stock has ranged in price between $13.48-$13.76 after having opened the day at $13.57 as compared to the previous trading day's close of $13.54. Southwest Airlines Co. operates passenger airlines that provide scheduled air transportation services in the United States. As of December 31, 2012, the company operated 694 aircraft, including 606 Boeing 737 aircraft and 88 Boeing 717 aircraft. Southwest Airlines has a market cap of $9.7 billion and is part of the services sector. The company has a P/E ratio of 20.6, above the S&P 500 P/E ratio of 17.7. Shares are up 30.8% year to date as of the close of trading on Monday. TheStreet Ratings rates Southwest Airlines as a buy. The company's strengths can be seen in multiple areas, such as its solid stock price performance, revenue growth, reasonable valuation levels, largely solid financial position with reasonable debt levels by most measures and notable return on equity. We feel these strengths outweigh the fact that the company shows weak operating cash flow. Get the full Southwest Airlines Ratings Report now. Exclusive Offer: Jim Cramer's 'go-to' small/mid-cap guru Bryan Ashenberg only buys stocks he thinks could return 50-100%. See his top picks for 14-days FREE.