>> reporter: american and southwest acknowledge the pandemic has mate e-made it harder to recover from weather issues. >> essential not only volunteer for work. >> reporter: but republicans focused on united's vaccine mandate. as for the rapidly approaching holidays. >> near 2019 levels of travel. account airline industry handle that? >> i think we are. all the support services we need, faa, tsa guidelines. disruptive of that. >> reporter: those complaints have been off the charts. flight ant ten attendants plead. chris van cleave, cbs news.