Watch Snakes on a Plane (2006) HD Full Movie Free on SolarMovie. Watch Snakes on a Plane (2006) online free. An FBI agent takes on a plane full of deadly venomous snakes, deliberately released to kill a witnes...An FBI agent takes on a plane full of deadly venomous snakes, deliberately released to kill a witness being flown from Honolulu to Los Angeles to testify against a mob boss.