About Leeham Company
Our aircraft performance and economic analysis aren’t “approved” by the OEMs —and this is exactly why it’s so valuable. Independent, data-driven, and free from marketing spin, our work supports real-world decisions in fleet planning, lease negotiations, and airline strategy. Founded in 1996, Leeham Co. provides impartial intelligence and analysis for the aviation industry, including acting as a Red Team to assess plans and projects in commercial aviation.
Our Core Expertise
Leeham Company Leadership
Scott Hamilton
Managing Director
Bjorn Fehrm
Aeronautical and Economic Analyst
To support critical decisions in aircraft financing and leasing, fleet transitions, and product evaluation, Leeham normalizes aircraft specifications and strips away the sales fluff. The result? Data you can trust— nearly three decades of helping clients see past the sales pitch with objective, in-depth analysis.
We’re here to help you win—whether it’s a lease negotiation, a fleet acquisition, or a strategy shift backed by solid aviation consulting services.
Our core team is backed by a trusted network of professionals across disciplines— covering everything from aviation product development to airline fleet planning and global regulatory insights. This collaborative approach enables us to tackle complex problems from every angle and uncover the “Ah-ha” moments that drive confident decisions.
Beyond our in-house experts, we collaborate with a broad bench of specialists in aircraft leasing, fleet optimization, and market forecasting, ensuring that every engagement has the right tools, models, and insights to succeed.