The budget airline Ryanair is facing backlash over its lack of response to a racist incident on a flight from Barcelona, Spain, to London.

A video posted online showed a white man shouting racist insults at an elderly black woman sitting in the same row and demanding she move.

Flight attendants did not remove the man from the plane, but the woman appeared to move to a different seat.

Ryanair has faced criticism after a video posted online apparently showed the airline's crew failing to take action to remove a passenger who launched a racist tirade against a fellow traveler.

The video, uploaded to social media by a Briton named David Lawrence, showed a man hurling racist insults at an elderly black woman sitting in the same row and demanding she move seats on a flight from Barcelona, Spain, to London on Friday.

It wasn't clear what prompted the quarrel. Lawrence told ITV the man abused both the woman and her daughter, but flight attendants did not eject him from the flight. The incident appeared to take place during boarding.

The budget airline tweeted Sunday that it had seen the footage and reported the incident to the police. It didn't provide further comment.

People on Twitter blasted the company's response.

Some vowed to boycott the airline.