Market capitalization of LUV increased by 6.51% over the past 1 year. The primary factor behind the change was an increase in P/E Change from 42.82 to 53.85.
The secondary factor is the Revenue Growth, contributed 1.15%to the performance.
Overall, the performance of LUV in the past 1 year is driven by P/E Change. Which is more unsustainable.