While the Boeing 787 Dreamliner family is an incredibly popular series of widebody twinjet aircraft, only a handful of carriers around the world fly all three of the type’s variants: the 787-8, the 787-9, and the 787-10. United Airlines is one such carrier, with current fleet data made available by ch-aviation showing that it presently has 12 787-8s, 47 787-9s (plus a whopping 141 more examples on order), and 21 787-10s at its disposal.
According to aeroLOPA, United Airlines favors three-class seating configurations on its 
Boeing 787 Dreamliner family aircraft, with capacities of 243 on the 787-8, 257 or 222 on the 787-9, and 318 on the 787-10. But where exactly do these jets fly? Using data from Cirium, an aviation analytics company, let’s see!
The Boeing 787-8
Starting off small with the 787-8, Cirium’s data shows that 
United Airlines has scheduled 436 flights with this model this month, with these offering collective grand totals of 105,948 seats and 478,218,654 available seat miles. Its most popular routes operate daily, with four corridors seeing such a frequency with the type this month. Three of these originate at Chicago O’Hare International (ORD), while one starts at Washington Dulles (IAD).
The sole Washington Dulles route serves Munich Airport (MUC) in southeastern Germany, which is also one of the three destinations served by United’s 787-8s from Chicago O’Hare on a daily basis this month. The other two are Barcelona El Prat (BCN) in Spain and Milan Malpensa (MXP) in Italy. On the whole, United Airlines is a huge advocate of the Boeing 787 Dreamliner family, with the carrier underlining this in a 2022 statement:
“787 aircraft address United’s current widebody aircraft replacement needs through the next decade. Their greatly improved maintenance and fuel burn economics will further United’s efforts to improve its overall cost profile.”
The Boeing 787-9
As for the Boeing 787-9, this model accounts for 1,795 flights, 461,315 seats, and 2,622,374,030 ASMs at United Airlines this month. With more examples of this particular variant in its fleet, the carrier can serve its top routes on a more frequent basis, with some corridors seeing two 787-9 flights a day this month. While the 787-8’s top routes were all transatlantic by nature, the 787-9’s most popular corridors are on transpacific sectors.
Two of these routes originate at San Francisco International Airport (SFO), with their destinations being Seoul Incheon International Airport (ICN) in South Korea and Changi Airport (SIN) in Singapore. The third and final twice-daily 787-9 route also originates on the West Coast of the United States of America, but at Los Angeles International Airport (LAX) as opposed to San Francisco. Its destination is Hong Kong International Airport (HKG).
Interestingly, the only two other 787-9 routes that United Airlines is operating more than daily on average are domestic, with both originating at Newark Liberty International Airport (EWR), which serves as the carrier’s main East Coast hub. From here, it is flying daily to and from San Francisco with the type, but included a second rotation on November 1, while Los Angeles sees either one or two daily rotations, with a total of 48 for the month.
The Boeing 787-10
Last but not least, the stretched Boeing 787-10 Dreamliner accounts for a total footprint of 958 flights, 304,644 seats, and 1,339,553,376 ASMs at United Airlines this month. Like the 787-9, its top routes are served twice a day, but, like the 787-8, these are both transatlantic corridors. The routes in question connect Chicago O’Hare International Airport with Frankfurt (FRA) and Newark Liberty International Airport with Tel Aviv (TLV).
The transcontinental domestic hop from Newark to Los Angeles almost matches this frequency, with two flights a day through the month except for on November 27, when the frequency drops to just the one. All of United’s other 787-10 routes this month are served daily, with the vast majority originating from Chicago and Newark. However, Los Angeles also has a second 787-10 route up its sleeve, serving Tokyo Haneda Airport (HND).
