- To be considered as a Commerical Airport, a set airport must-have commercial flight operations that are available to the general public, and have published annual passenger counts. Dedicated general aviation, private, and military airfields are not considered. Daul purpose airports which operate commercial flights are considered (ie. military and commercial). Please also note that airports outside of the city limits are also considered, as long as their primary use is that particular city.
- Source: Wikipedia