The 100 737 MAXs and 100 787 Dreamliners ordered by United will be included in the company's December deliveries and orders report.
"United emerged from the pandemic as the world's leading global airline and the flag carrier of the United States," said United CEO Scott Kirby.
"This order further solidifies our lead and creates new opportunities for our customers, employees and shareholders by accelerating our plan to connect more people to more places around the globe and deliver the best experience in the sky," Kirby added.
The airline's current orders for Boeing jets have surpassed 530, including more than 430 737 MAX airplanes.
"With this investment in its future fleet, the 737 MAX and 787 will help United accelerate its fleet modernization and global growth strategy," said Stan Deal, president and CEO of Boeing Commercial Airplanes.
"The Boeing team is honored by United's trust in our family of airplanes to connect people and transport cargo around the world for decades to come," Deal added.
Boeing's November deliveries lagged behind its September deliveries of 51 aircraft. In September, the manufacturer surpassed the 50-plane threshold for the first time since March 2019.
The November deliveries comprise 32 737 MAX jets, up from 23 copies delivered in October but still down from 37 aircraft of the same type delivered in September.
Boeing Commercial Airplanes' chief Stan Deal stated then that Boeing would recover quickly.
"We can surge, and we will recover for our deliveries at the end of the year," said Deal.
In the first 11 months of 2022, Boeing delivered 411 commercial aircraft, including 333 737s and 21 787s. Order revocations increased in November to 571 from 550. The US airframer's current backlog stands at 4,441 aircraft in total.
