"She became agitated and said, 'If you’re gonna act like that we can go back to the gate and you can get off.' I held up my phone to show her that airplane mode was on."
"The safety and security of Delta people and our customers is always our top priority. We will always review and enhance our policies and procedures to ensure that Delta remains a leader in safety."
The passenger reportedly approached the air marshal from behind and jumped on his back.
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.