The Embraer 175 is a slightly stretched E170. Both belong to the clean-sheet E-Jet family that Embraer launched in 1999 to move up from its 50-seat ERJ-145 commuter jets. The E-Jets gave the Brazilian company a real mainline product. The E170 flew in February 2002, the E175 followed on June 14, 2003, and Air Canada began service in July 2005. It was a real step up in comfort.
Seating 76 to 88 people in a comfortable four-abreast cabin, it sold steadily at first. Its career changed after 2010, when US scope clauses settled at 76 seats and airlines began replacing 50-seat jets in large numbers. Carriers needed aircraft that fit those limits exactly, and the E175 did. A 2014 update added redesigned winglets and cut fuel burn. The saving came to more than 6 percent.
The E175 then won the large majority of US regional jet orders, beating the CRJ900 campaign after campaign. More than 700 have been delivered. SkyWest, Republic Airways and Envoy Air fly it for United, Delta, American and Alaska. Because the E175-E2 goes over current scope weight limits, the original stays in production with orders into the late 2020s. It is now the default aircraft of the American regional system.