The policy comes after flight crews had to deal with some passengers who flagrantly disregarded the mask mandate, prompting the company to create the formal warning system, Alaska said in a blog post Tuesday.
Other airlines have already stripped passengers of their ability to fly. Delta Air Lines told employees last week that it has barred a handful of noncompliant passengers and will ban customers from future Delta flights if they refuse to wear a mask. And United Airlines announced last month that any passenger who refuses to wear a mask onboard will be put on an internal travel restriction list, losing their privileges for a time with the company.
Like other carriers, Alaska does list a few exemptions to the mask mandate: Children younger than 2, passengers with medical problems and passengers with disabilities that prevent wearing a face covering. Customers are permitted to temporarily remove their masks to eat or drink, the airline said.
Before passengers board Alaska flights, they will also be asked to sign a required health agreement and agree to abide by the mask policy.