Airport '77

Airport '77 is a movie starring Jack Lemmon, Lee Grant, and Joseph Cotten. Art thieves hijack a 747, hit fog and crash into the ocean, trapping them and the passengers under one hundred feet of water.
Flight 23 has crashed in the Bermuda Triangle after a hijacking gone wrong. Now the surviving passengers must brave panic, slow leaks, oxygen depletion, and more while attempting a daring plan, all while 200 feet underwater.