'fly far' is a correct and usable phrase in written English.
You can use it when referring to a person or object that is leaving on a journey or moving away. For example, "He waved goodbye and said, 'Fly far!'".
The Koch Brothers used to fly far below the radar.
"The seeds fly far away from other trees, many kilometres.
He had bought the pigeons in Kilis, he explained, so they would not fly far away.
By Jane Mayer June 5, 2017 The Koch Brothers used to fly far below the radar.
But then, that wild infection may snuff itself out again because dying birds cannot fly far.
The mosquito does not fly far and in the past it never used to come out of the forest.
Stinger missiles, provided through the American covert program, had forced Soviet aircraft to fly far above the battlefields.
One effect of the cold: kicks didn't fly far, and the Titans started their next drive on their own 39.
"Dead birds don't fly far," said Dr. Carol Cardona, a poultry veterinarian at the University of California at Davis.
He can throw a baseball more than 400 feet on the fly, far enough to clear the outfield wall from the batter's box in any big-league park.
