Yes, you can copy and paste any part (or the entirety) of your flow!
To copy, select as many steps as you’d like to copy, use a keyboard shortcut (⌘ + C on Mac, or Alt + C) to copy, and then paste away (⌘ + P on Mac, or Alt + P). When you copy a step (or groups of steps), it will copy a “snippet” to your clipboard that looks something like: parabola:cb:4f7084b3d2bb4505b0b74efc8e23242b.