Arriving back at the landing platform, Alucard returned to his ship and got on board. Due to the time it took to travel back to Mandalore, he would be unable to return to Alderaan to do the shopping he had wanted to do. He would have to come up with a suitable excuse to give Organa for that. Leaving immidiately, he should be able to arrive at Coruscant in time for his meeting with Organa.
So placing himself in the pilots chair, he took off and departed for Coruscant.