Passengers said they were told the flight had "timed out" and would not leave the tarmac.
A Delta flight traveling from Atlanta to London was turned around twice before making it across the Atlantic.
There have been three incidents involving passengers urinating publicly on planes.
The company's CEO made donations to the Republican Party in 2016.
Only more government regulation could have guaranteed the conservative author her seat.
Coulter went on a two-day Twitter rampage after she was asked to move seats on a three-hour flight.