The passenger cabin on a Delta Boeing 737-900ER is shown while landing in Salt Lake City, Utah, U.S., January 10, 2018.
Mike Blake | Reuters
Delta first started blocking middle seats and limiting capacity on smaller planes in April near the start of the Covid-19 pandemic. Other airlines had similar policies, including Southwest Airlines, JetBlue Airways and Alaska Airlines, but they have since gone back to selling all seats.
Physically distancing from other passengers is extremely difficult on an airplane. Delta…