Profitability Ratios Comment and compare the ratios between the two airline companies and compare against the industry average Profitability Ratios I Southwest Airlines Delta Airlines industry 2018 2019 2018 2019 2018 2019 Return On Assets 6.50% 7.40% 9.40% 8.90% 5.20% 6.20% operating margin = EBIT 11.85% 14.08% 14.59% 13.18% 10.70% 12.40%