The middle seat is sacrosanct with Delta Airlines.

They have been blocked off from April 2020, the airline continuing with the rule until at least 30 April. It is the only US airline to have this policy.  It also provides more space for travellers.

“We want our customers to have complete confidence when travelling with Delta, and they continue to tell us that more space provides more peace of mind,” said Bill Lentsch, chief customer experience officer. “We’ll continue to reassess seat blocking in relation to case transmission and vaccination rates, while bringing back products and services in ways that instil trust in the health and safety of everyone on board – that will always be Delta’s priority.”

www.delta.com