Alex Fletcher, Kieran Mills-Evans and Jason Oswell all struck before the half hour mark, before Shane Sutton, Oswell again and Ross Stephens wrapped up an emphatic win before half time.
Oswell secured his third treble of the season as the Robins ran riot on the penultimate day of the league campaign.
Airbus were already relegated but had the first chance of the game, Ashley Williams lashing over a knock down.
It was easy to see how Airbus’ defensive mistakes had cost them dear this season, as after six minutes one cost them the opening goal.