Yes, Fasker City has an airport, and there are indeed flights to Lundan, so there was no need to take a ferry or train from the start.
Wayne procured the Obelisk and completed the investigation mission of robbing from the rich to help the poor. After eating and drinking his fill, and enough card-playing, he took a direct flight back to Lundan.
He and Sandy went to the Magic Department immediately to sign the investigation report, which marked the complete fulfillment of their mission.
"Lady Sandy, it was a pleasure working with you. I hope we have the chance to do so again," he said.
"Same here," she replied.
What else could Sandy say? She could only give a forced smile as she withdrew her hand, withdraw... Drew out her hand.
"By the way, might I have the honor of inviting you to a movie?" he asked.
"No thanks, Sir Wayne. Someone as excellent as you deserves a younger girl," Sandy quickly set boundaries, whilst feeling proud of her own charm.
"That's a real shame," he said.