Choosing between an aisle or window seat for a night flight depends on your priorities for sleep versus freedom of movement. The window seat is generally considered superior for sleeping because it provides a solid wall to lean your head against, and you won't be disturbed by seatmates needing to use the restroom. You also have full control over the window shade, preventing unwanted light during sunrise. Conversely, the aisle seat is better if you value unrestricted access to the lavatory or need extra space to stretch your legs into the aisle periodically. However, you risk being bumped by the beverage cart or other passengers walking by, and you must get up whenever your row-mates need to exit. For most travelers seeking high-fidelity rest on a red-eye, the window is the gold standard for minimal disruption and physical support.