The first B789 took flight on September 17, 2013 and first entered service with Air New Zealand on July 8, 2014. This aircraft is 63 metres or 206 feet in length, 20 feet longer than the initial Boeing 787-8 variant. Both models share the same 60 metre or 197 foot wingspan. At the tail, the Boeing 787-9 Dreamliner stands 17 metres or 56 feet in height.
WestJet Airlines started deliveries of Boeing 787-9 Dreamliner aircraft in early 2019. In total, ten will eventually join the fleet of this Canadian airline. the WestJet version of the B789 is configured for a maximum total of 320 passengers. There are 16 seats in business class, 28 in premium economy and 276 economy class seats.