Southwest Airlines Co. will give passengers something extra with its newly designed aircraft seats — more than one-half inch of extra width.

At 17.8 inches (45 centimeters) across, the bottom seat cushions will be the widest in the coach cabin of any Boeing Co. 737 in the U.S., according to Southwest, the biggest operator of 737s. The plane is the world’s most widely flown jetliner.

The more expansive seats represent a departure from recent trends in the airline industry, where passengers have seen their personal space shrink as carriers pack more people on each plane. Southwest will benefit too: The new seats will also reduce fuel consumption by taking 200 pounds (90 kilograms) off the weight of each aircraft.

Southwest worked with B/E Aerospace Inc. to design the seats, which were unveiled Tuesday at the Aircraft Interiors Expo in Hamburg, Germany.

Passengers won’t see the new seats until mid-2016, aboard Southwest’s newest Boeing 737-800s. They’ll also be on the Boeing 737 Max, set to debut in mid-2017. Southwest will be the first commercial airline to fly that model.

The width compares with 17.1 inches on Southwest now, 17 on Alaska Airlines and as much as 17.3 on some United Airlines 737s in economy class, according to the website. Southwest planes with the new seats will keep a 32-inch pitch, or the distance from the back of a seat to the back of the one behind it. Pitch on some of Delta and United’s 737s as little as 30 inches, according to

‘Bold Blue’

Seats on Airbus Group NV’s A320 family of planes, its most widely sold, generally are wider than on Boeing 737s. Airbus A320-family models operated by discounter Spirit Airlines are almost 17.8 inches wide, although pitch shrinks to 28 inches.

Southwest’s new seats are blue, similar to the updated “bold blue” paint on the outside of the planes, and upholstered in a material made of natural leather fibers. They include a headrest that moves up and down and new storage space at the top of the seat back. A curved frame provides more shin and knee room.

Older aircraft won’t be retrofitted with the new seats, Southwest said. The airline added six seats to most of its planes under a cabin refurbishment that began in 2012.

To contact the reporter on this story: Mary Schlangenstein in Dallas at To contact the editors responsible for this story: Edward Dufner at Molly Schuetz.

This article was written by MARY SCHLANGENSTEIN from Bloomberg and was legally licensed through the NewsCred publisher network.

Photo Credit: A Southwest 737-700 at Charleston International Airport in January 2012. Daniel Betts / Flickr