A new nonstop flight from Denver International Airport will carry travelers 6,152 miles between Denver and Istanbul – the longest flight from DIA.

Claire Ramsdell recently made a connection at Istanbul Airport, which features a gleaming new terminal that stretches over 77 million square feet, and thought she wouldn't make it.

Istanbul is the world's most connected airport with 309 nonstop destinations. The top 20 most connected airports include significant representations from Europe, the U.S., and China, but not New ...