Bombardier offers two version of the C Series: a 130-seat CS300 and a smaller 108-seat CS100.
Delta opted for the smaller CS100, but expect the airline to switch some of its order to the larger jet down the road.
According to Bombardier, the C Series' greatest selling points are its efficiency and cabin comfort.
A major contributor to the Bombardier's efficiency is its lightweight aluminum and composite body.
In addition, its pair of Pratt & Whitney PW1500G geared turbofan engines are some of the most fuel efficient on the market and help make the airplane 15% cheaper to operate than aircraft currently in production.
According to Bombardier, the C Series also emits 20% less carbon dioxide during operation and is the quietest airliner on the market.
In January of 2016, then Delta CEO Richard Anderson cited the airplane's engines as a major reason for the airline's interest in the C Series.
With a range of more than 3,500 miles, the CS100 allows Delta to operate routes its smaller jets had not been able to reach before.
Step inside the Bombardier's cabin and you'll find a surprisingly spacious interior for a relatively small 108-seat aircraft.
Enter the jet from the front and ...
... you'll see the front galley to your left ...
... as well as the first-class bathroom with a changing table.
Up front are the CS100's business-class seats.
Look toward the back of the plane and you see the CS100's five-abreast seating configuration in economy class. That means there's only one middle seat per row as opposed to two per row on the rival Boeing 737 and Airbus A320 family jets.
Since the aircraft presented to the press was one of Bombardier's demonstrators, the interior did not have Delta's seats, lighting, and in-flight entertainment systems. But the cabin layout is accurate.
Even with Delta's specified interior, the CS100 should have the widest economy seats on the market at 19 inches. But the seat pitch should remain Delta's standard 30 to 31 inches, which is solid but not industry-leading.
In addition, Bombardier claims that the C Series' windows are 50% larger than its rivals.
Here's the view from the CS100's window.
Bombardier designed the CS100's overhead bins to open 5 inches lower, which makes it easier to load baggage. The overhead bins are also designed to hold oversize carry-on luggage.
What doesn't fit in the overhead bins can be stored down here in the belly cargo hold.
In the cockpit, the C Series features five large, 15.1-inch displays. Here's Capt. Steve Paradis, who helped fly the plane down to Atlanta from Montreal.
Instead of control yokes, the Bombardier is flown using side sticks.
The position of each side stick can be monitored on the LCD displays.
The Bombardier CS100 is a full fly-by-wire aircraft, which means that the side sticks have no physical connection to the airplane's control surfaces. Instead, the aircraft is flown through computer inputs.
Delta is expected to receive its first CS100 in 2018.
