is there a way to make it look like your camera is filming through a window. like if you were in a car or plane filming the outside.

Place your camera inside a glass cube, maybe?

 Hmm.

Actually, the optics of those two examples are quite different. Airplane windows are plexiglass, and there are two discreet panes; the inner one that faces the cabin, and the outer one integrated in the fuselage. There is also a gap of at least an inch between the inner surfaces. Heated air is blown between them to keep them from fogging or icing, and there is reduced pressure between them, as well, to avoid too much pressure on one pane or the other.

Auto glass is two panes of hi quality glass with a plastic sheet bonded between them for safety. That plastic 'separator' provides a space where photons can scatter; windshields receive anti-glare treatments because safety glass -has- more glare issues.

 If you are talking car glass, then I would try that cube, flattened to close to what glass you are looking out of, and parent the camera to it, making sure the cube is large enough so the camera can't see the edges, and try different types of glass until you get one with a refraction index that's appealing. If you can't get it with one cube, clone the cube, put it against the first (as if you had created a pane of safety glass), then experiment with different types of glass on each one.

If you want the aircraft window effect, then use two paralleled flattened cubes from the beginning, and apply glass materials with lower reflectivity, and adjust it until you get the kinds of multiple reflections you get in aircraft windows.

 thanks a lot.
Ill try them out and see if it works.