Our Team
We love our people! J|D gathers elite professionals from varied disciplines and cultures to enrich our insights in the global aviation industry. Experience the wealth of knowledge and innovation that only diverse perspectives can offer.

Bill Flock
Director of Finance
Airline Services
Bill has nearly 30 years of airport/airline management consulting experience, where he specializes in airport financial planning and aviation demand forecasting. Bill has worked on major consulting assignments for a wide range of airports, from large hub connecting hub airports such as Chicago O’Hare, Denver International and Phoenix Sky Harbor to local general aviation airports such as DuPage and Willow Run airports. Bill has significant experience working with medium and small hub airports such Memphis International, Tucson International, Wichita Dwight D. Eisenhower National Airport, and Austin-Bergstrom International.
Bill’s multi-disciplined experience in airport financial planning and aviation demand forecasting provides him with the expertise to look at airport development challenges from both an economic and air service perspective. This background provides him with the understanding that the most sophisticated financial plans can fail to predict a project’s ultimate financial feasibility unless the aviation demand side of the equation has been thoroughly examined and realistically projected.
Bill’s previous experience includes numerous financial planning and bond feasibility studies supporting the financing of major capital development programs at a diverse group of airports including Cleveland Hopkins International, Chicago Midway, Mineta San Jose International, Toronto Lester B. Pearson, Phoenix Sky Harbor, Tulsa International, and LaGuardia Airport. Other specialized studies include an airport parking/Conrac development study for Detroit Metropolitan, an on-airport hotel feasibility analysis for San Francisco International, air service analysis at Denver reviewing a potential merger of Southwest and Frontier airlines, and a ground transportation study for the Houston Airport System.
Q&A with Bill
What do you love about the aviation industry?
It’s a stimulating environment. If you’re paying attention, you can learn something new every day.
What changes or trends do you think will have the biggest impact on aviation?
The middle of the week used to be peak travel due to business travelers. Now that people are working from home and hybrid schedules are more common, travel is starting to spread out over the entire week. Also, as baby boomers retire and travel more, airports are going to have to adjust to accommodate the older demographic.
What advice would you give someone starting out?
Experiment early and quickly in your career. Pick something you are interested in and really focus on that one subject area, becoming a specialist. I became more of a generalist and if I had to do it all again, I’d narrow my focus.