If you’ve ever traveled, you’ve undoubtedly seen them everywhere—on tickets, baggage tags and departure and arrival displays: three-letter airport codes. Some, like BOS or LAX, are instantly ...

CHICAGO — Chicago’s O’Hare International Airport is one of the busiest in the world. Those who have traveled in and out of O’Hare know its airport code well. ORD is seen on flight reservations, ...

Add Yahoo as a preferred source to see more of our stories on Google. DENVER (KDVR) — If you look at the logo for Denver International Airport, you might notice the bold letters DEN under the stylized ...