How to delete an accidentally loaded flight plan?

[Dragonmount 5]

I'm just curious. But the only way I could see was to delete all 23 pages manually one line at a time, and decided it was just easier to just quit fsx all together and restart the flight. Is there an easier way to just delete the whole flight plan?

[MPL 30]

Enter new origin and destination

[Irishcurse 234]

I would just load a new fp. Same way as you loaded the incorrect one whether its a company route or built by hand.