We flew JTR to ATH on a DHC plane with 3-3 configuration. The flight was only 45 minutes on Olympia Air, a subsidiary of Aegean Airlines. Santorini airport was cramped even at end of season. There was insufficient seats while waiting for departure. The plane was clean and comfortable. We were offered a beverage and biscuits on board. Flying to Santorini is a good option to avoid the ferries which can take about 6 hours for the same journey.