[3] The Federal Aviation Administration (FAA) National Plan of Integrated Airport Systems for 2023-2027 categorized it as a non-hub primary commercial service facility.

[4] Federal Aviation Administration records say Barkley Regional had 13,643 passenger boardings (enplanements) in calendar year 2021 and 14,677 in 2022.

This service was replaced by Contour Airlines on December 6, 2022, with nonstop flights to Charlotte, NC, using Embraer 145 regional jets.

According to the Official Airline Guide (OAG), two airlines were serving Paducah in 1976: Delta with McDonnell Douglas DC-9-30 jets nonstop from Evansville and Memphis as well as direct, no change of plane DC-9-30 jet flights from Atlanta, Birmingham, AL, Boston, Chicago O'Hare Airport, Indianapolis and Philadelphia, and Ozark with nonstop McDonnell Douglas DC-9-30 jet and/or Fairchild FH-227B turboprop flights from Clarksville, TN, Louisville, Nashville and St. Louis as well as direct, no change of plane DC-9-30 jet flights from Chicago O'Hare Airport, Columbia, MO, Indianapolis, Kansas City and Milwaukee.

[8] In 1985 Allegheny Commuter had expanded its service on behalf of USAir with nonstops from Evansville, Louisville, Nashville, and Owensboro, KY with Beechcraft 99s while Britt Airways was flying nonstop from Cape Girardeau, Evansville, Memphis and St. Louis with Fairchild Swearingen Metroliner propjets.

In 2015 the airport had 23,269 aircraft operations, average 63 per day: 80% general aviation, 8% military, 6% air taxi and 6% airline.