ACG and WestJet Finalize 13 Boeing 737-10 Lease Agreements

Aviation Capital Group LLC (ACG) and WestJet finalized long-term lease agreements on July 14, 2026, for 13 Boeing 737-10 aircraft, positioning the Canadian carrier to potentially receive the first delivery of the variant from the lessor’s orderbook.

The transaction, announced in a press release by ACG, expands an existing relationship between the two companies following the delivery of two Boeing 737-8 aircraft in February 2026. The agreement supports WestJet’s fleet renewal strategy while highlighting ACG’s growing backlog of Boeing’s largest narrowbody variant.

Fleet expansion and the Boeing 737-10

The Boeing 737-10 represents 30 percent of the total 737 MAX order backlog, with more than 1,400 orders globally. According to ACG, the aircraft offers a 20 percent lower fuel burn per seat and a 20 percent increase in revenue potential compared to older generation aircraft.

ACG Chief Executive Officer and President Thomas Baker stated that the two companies share a strong commitment to the type, with over 140 aircraft on order between them.

“This makes ACG the leading lessor customer for the type and WestJet one of the largest airline customers,” Baker said.

WestJet Group Chief Financial Officer and Executive Vice President Mike Scott noted that shifting deliveries to the 737-10 provides the airline with added flexibility to scale operations and meet passenger demand.

Certification timeline and labor context

The Boeing 737-10 has not yet received type certification from the Federal Aviation Administration (FAA) or Transport Canada (TC). ACG confirmed that deliveries to WestJet will commence only after the aircraft achieves regulatory approval.

The lessor has aggressively expanded its 737 MAX portfolio. In January 2026, ACG finalized an order for 50 Boeing 737 MAX jets, including 25 737-10s. This acquisition gave ACG the largest 737-10 orderbook of any aircraft lessor.

Labor unrest at WestJet

The fleet announcement arrives amid significant labor friction at the Canadian airline. On July 15, 2026, the Canadian Union of Public Employees (CUPE) Local 8125, which represents 4,400 WestJet flight attendants, announced that 99.4 percent of voting members authorized strike action. A legal strike could commence as early as August 2, 2026, potentially disrupting the carrier’s operations as it plans for future capacity growth.

AirPro News analysis

We view this lease agreement as a strategic hedge for both parties. For WestJet, securing 737-10s through a lessor provides delivery flexibility while the airline navigates immediate labor challenges and awaits the variant’s final certification. For ACG, placing 13 uncertified airframes with an established North American operator validates its heavy investment in the 737-10 program. The success of this timeline remains entirely dependent on the FAA and Transport Canada certification schedules.

Sources: Aviation Capital Group