HMSHost said all workers who were on leave and whose return to work was not scheduled until October 15 will also be laid off.
Most of the layoffs concern those working as fast food clerks, restaurant hosts, baristas, bartenders and waiters.
Food and retail stores at airports have been severely affected by the pandemic, which has significantly reduced air travel.
State officials on Saturday reported 859 additional confirmed coronavirus cases with 24 additional deaths, then 697 new cases and two new deaths on Sunday.
COVID-19 tracker | Latest figures from local officials