About 100 taxi drivers were parked at the airport Monday to protest Associated Cab's firing last week of Rupinder Gill.
Gill is the head of the Calgary Cab Drivers Association, who has been critical of how the company is handling its contract with the airport.
Passengers were forced to wait in line for sedan service.
The drivers say they are ready to wait as long as it takes for Gill to be rehired by Associated, but the company's president says that won't happen.
It's the third such walkout by Associated Cab drivers since late August.
The Calgary Airport Authority isn’t getting involved in the dispute, saying it's a matter between Associated Cabs and some of its contract workers.
Airport spokeswoman Jody Moseley says the walkout has not adversely affected operations for travellers.
She says many customers are using other ‘on curb’ taxi companies or sedan services.
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