U.S. regional carrier Skywest Airlines was reportedly hit by technical problems, resulting in grounded flights across the country.
Alaska State senator Lora Reinbold said the Alaska Airlines ban means she cannot travel easily to the state capitol, Juneau.
Alaska State Troopers said: "The five individuals were not following flight attendant instructions related to mask use and were using foul language during the flight."
Two former Alaska Airlines employees have filed a complaint with the EEOC after being fired for asking about the company's support of the Equality Act.
Alaska Airlines' website states its dress code is "casual" but confirmed the final say over what meets that requirement rests with the staff.
Once in the air, one of the five remaining members of the group reportedly started to threaten crew members and other passengers.
Alaska Airlines is the latest company to offer up services to the humanitarian effort, joining six other airlines.
128 passengers and six crew members were evacuated from the plane at Seattle-Tacoma International Airport in Washington.
The Alaska GOP state senator refused to wear her mask above her nose and previously blasted the airline as "mask bullies."
The policy applies to customers who bought tickets on or after April 1, 2020, and who are looking to swap over to a flight of equal or less value.
Alaska Airlines Flight 422 was forced to return to Seattle-Tacoma Airport shortly after a male passenger was filmed saying he would "kill everybody" on the plane.
Airlines are following face-covering recommendations by the U.S. Centers for Disease Control and Prevention.
Half a dozen crew members had to be given a medical checkup after the plane was grounded.
"We are reviewing what transpired with our Piedmont and Kansas City colleagues," the airline said.
The aircraft was carrying 136 passengers from San Francisco to New Orleans when the mysterious smell forced an unscheduled stop.
"I cannot believe that an airline in this day and age would give a straight couple preferential treatment over a gay couple and go so far as to ask us to leave."
Passengers on a Mother's Day Alaska Airlines flight ended up being part of its history.
"If a non-disabled child that threw up, would the airline have kicked that family off the flight?" Meaghan Hess asked.
"The pilot said he didn't want it around his feet. Maybe he had a phobia?"
JetBlue gets outbid for Virgin America, with deal likely coming to fruition Monday.
Upon hearing unusual noises, the pilot requested an emergency landing and returned to Seattle.