KEY POINTS
  • Flight attendants are worried about physical attacks by travelers after an uptick in conflicts over mask mandates, Sara Nelson, international president of the Association of Flight Attendants, told CNBC on Monday.
  • The Transportation Security Administration announced Thursday it would double fines for passengers who refuse to comply with the federal mask mandate for air travel.
  • Nelson said on "Squawk Box" that flight attendants "overwhelmingly" support vaccine mandates but added that companies would have to include religious and medical exemptions.

Flight attendants enforcing mask mandates onboard are worried about physical attacks from travelers, Sara Nelson, international president of the Association of Flight Attendants, told CNBC's "Squawk Box" on Monday.

The Transportation Security Administration announced Thursday it would double fines for passengers who refuse to comply with the federal mask mandate for air travel. The union president said the TSA's updated policy could help address more mask-related conflicts in the airport, thereby reducing issues for flight attendants to handle on the plane.