(CNN) — Southwest Airlines is throttling back on its passenger cabin cleaning procedures instituted because of the Covid-19 pandemic.

The changes – such as no longer sanitizing seat belts between flights – will reduce the time aircraft spend on the ground between flights, the airline told flight attendants in a memo obtained by CNN. Deep overnight cleanings will continue.

"As our flight schedule evolves, we are returning to standard turnaround time," says the memo.

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