Delta Air Lines will extend its middle seat block until Jan. 6, 2021, limiting passengers onboard and offering more space through the holiday season.

“We’re extending one of our key health and safety protocols this winter holiday season by blocking the selection of middle seats and limiting the number of customers per flight through at least Jan. 6, 2021,” Delta announced in a statement.

“Medical experts, including our own partners at Emory Healthcare, agree — more distance on board makes a difference,” said Bill Lentsch, chief customer experience Ooficer, Delta Air Lines. “We believe that taking care of our customers and employees and restoring confidence in the safety of air travel is more important right now than filling up every seat on a plane. We’ll continue taking a thoughtful, layered approach ensuring customers know to expect the highest standard of care as they prepare for their holiday travels.”

Delta passengers will be unable to choose middle seating when booking online or on the app, on all flights, including Delta Premium Select, Delta Comfort+ and Main Cabin. Customers purchasing seating for one or two at a time will notice the middle seat is blocked, while customers purchasing for a party of three or more will see the middle seat available, allowing groups to sit together.

To aid in travel confidence, Delta is extending its change fee waiver for flights purchased through Sept. 30. These steps are part of the airline’s adaptation to the new normal, including limited passengers on each flight, requiring face coverings and keeping up with health and safety hygiene measures.