Easter egg: Go to special features and press button to go to next menu, when there keep pushing the right arrow. You will see a question mark press enter and see how they created Samara.
Easter egg: Go in to the Bonus Features and then into "The In-Flight Movie: The making of Flightplan." Place the cursor on "D-Connectin Flights: Post Production" and press left twice and a little circle with a > symbol in it should appear. Click on it to hear the director talk about the post 9-11 movie problems.
Easter egg: If you look under Special Features, use the arrow keys to highlight "On Set Peeks", then use the left arrow key to light up a Red symbol. If you click on it, another menu called Haunts will appear with 2 more features - one shows a long version of the home movies shown in the film. The other is a scare reel that shows all the scary parts of the movie condensed to about 2 minutes.