This summer, Delta Air Lines will be streamlining travel options for premium flyers to many of Europe’s hard-to-reach summer destinations. The carrier will now allow Delta One passengers the opportunity to book final-leg charter flights through the carrier’s private jet subsidiary, Wheels Up. Those traveling to destinations like Athens, Nice, or Rome will be able to book onward private jet travel to high-profile but hard-to-reach destinations like Mykonos or St. Tropez. Wheels Up will arrange charter and transfer operations using its global fleet of more than 7,000 aircraft and helicopters.