As of December 2025 Southwest Airlines has a market cap of NZ$37.59 Billion. This makes Southwest Airlines the world's 1045th most valuable company by market cap according to our data. The market capitalization, commonly called market cap, is the total market value of a publicly traded company's outstanding shares and is commonly used to measure how much a company is worth.
On Dec 18th, 2025 the market cap of Southwest Airlines was reported to be: