The Q400 is a 74 or 76 seat, high-wing turboprop. Alaska/Horzon operates 49 Bombardier Q400s as of 2012. All Horizon Air aircraft are operated in a single class configuration. Each row has two seats on either side of the aisle. There are no middle seats on Horizon, only window or aisle. The Q400 is a stretched and improved 70&78 passenger version of the Dash 8-300 that entered service in 2000. Its 360 knot cruise speed is 60-90 knots higher than its competitors/predecessors. The maximum operating altitude is 25,000 ft (7,600 m) for the standard version. The Q400 has a cruising speed close to that of most regional jets, and its mature engines and systems require less frequent maintenance, reducing its disadvantage. It also has a full glass cockpit which is a favor of crews.
Horizon Air features all leather seating. In 2010-11, As Horizon transitioned to Alaska branding, it phased out its CRJ-200s replacing them with an all Q400 fleet. Horizon is known for its in-flight service that in many cases surpasses that of its parent, Alaska: Since 1991, Starbucks coffee is served in-flight on all Horizon Air flights. It also offers free Northwest beer and wine in addition to free water and carbonated beverages. Horizon also offers a limited buy on board meal service. Unlike Alaska Airlines, there are currently no plans to install in flight wireless internet on board Horizon Air planes.