note, this only works if you're assigned as the ship's pilot:
1. walk into the cockpit (if the ship only has one room, it's automatically the cockpit)
2. if you can see the link "Enter Cockpit" in the right hand menu (under "Control"), click there, else click the little yellow icon with the X-Wing-like cockpit canopy to set the ship to "piloted", then click on "Enter Cockpit".
3. in the Cockpit screen, click on "Travel"
4. select your mode of travel and do it :)