"I'm Flying" is the thirteenth and perhaps the most famous scene in Titanic.
It displays Rose seeking out Jack and apologizing for refusing to listen to him earlier that day when he insisted that she break free from her slave-like lifestyle before it results in her death. Jack then makes her stand on the railing of the ship, grabs her arms as she extends them out, and Rose says one of the most famous lines from the film, "I'm flying!" Afterwards, Jack and Rose share their first kiss as the Titanic sees daylight for the last time.
This is, perhaps, the most famous scene because it so often appears in parodies of the film. Present-day cruise ships have often cordoned off their bows with warnings that it is a restricted area, due to danger concerns of multiple cases of couples reenacting this scene.