United expects to take delivery of the Embraer E-175 aircraft in 2019 and delivery of the Boeing B787-9 aircraft in 2020.
The 25 new E-175 aircraft will replace 25 Bombardier CRJ-700 aircraft currently being flown by the airline’s United Express partners.
The new Boeing B787-9 aircraft are part of United's widebody fleet replacement strategy. The B787-9 is the longest-range version of the aircraft, while using 20 percent less fuel than older-generation aircraft.
"These new B787 aircraft are another step in our widebody replacement strategy, and we will continue to roll out new announcements in the future as we implement our comprehensive fleet plan," noted, Gerry Laderman, acting chief financial officer, United.