ABM notified the state that 1,121 employees will be affected effective April 12.
The cabin cleaning contract will be taken over by AirCo, a ground handling services provider formed after Delta last year sold a stake in wholly owned subsidiary Delta Global Services in a deal with Argenbright Holdings I LLC. AirCo is jointly owned by Argenbright, with a 51 percent stake, and Delta, with a 49 percent stake.
Delta said it reviewed contracts for aircraft cleaning, janitorial, Skycap, wheelchair and security vendors, and is notifying contractors of its 2019 selections.
In 2017, Delta switched its contractor for wheelchair agents from ABM to Delta Global Services.