Southwest Airlines partnered with The Birthday Party Project to support the nonprofit's mission of giving birthday parties to children experiencing homelessness. 

The partnership consisted of Southwest Airlines collaborated with The Birthday Party Project to support their mission through corporate initiatives as well by providing Southwest customers the chance to engage. These opportunities for Southwest customers, as well as employees to engage, included donations, celebrations as well as volunteer projects.

Southwest also encouraged their employees to send birthday cards through The Birthday Party Project with each birthday card counting as an Act of Kindness that is counted in Southwest's goal of one million Acts of Kindness by the end of 2021.