Nobody flies to a volcano for the airport, and JTR proves the point, a single terminal that copes fine in April but buckles once the widebodies stack up in July and August. The caldera views are the reason you're putting up with any of it, and Oia's sunsets have earned every bit of their reputation. Fly in from Athens in under an hour, or further afield from London or Amsterdam, and let Klarna or Clearpay soften a bill that only gets steeper once you're on the ground in Fira.