Khloe Kardashian's ex continues to knock on death's door.

Lamar Odom was removed from his Delta flight out of Los Angeles Monday night after allegedly drinking so much beforehand, he threw up on the airplane !

According to multiple reports, the recovering NBA star was spotted throwing back beers and mixed drinks at the airline's lounge bar just before his redeye flight.

Then, just before takeoff, onlookers claim the 36-year-old lurched from his seat, throwing