If there’s one unifying ethos among the one percent, it’s control at all costs. In normal times, money really can provide some buffer against the whims of the world. But this is much less true in an era marked by persistent wars. There are, however, work-arounds for those willing to pay premiums for certain routes. Over spring break in March, Dr. Doft, her husband, and two sons went to Thailand. They deliberately took an Asian airline carrier to avoid stops in the Middle East—something they will also do this summer on their trip to the Asia-Pacific region. Similarly, Upper East Side–based art collector and former Christie’s specialist Tianyue Jiang says that given the possibility of airline fuel being rationed, she’ll streamline her summer travel to Italy, France, and Greece by avoiding connecting flights, sticking to larger, more international airlines to dodge cancellations, and taking trains or boats for inter-city and island transfers. Even that will be more expensive with fuel surcharges, according to David Zipkin, cofounder of Tradewind Aviation, which operates both private and scheduled …