How Airports Serve Kansas
Mark Pearson
This map displays the major airports in and around Kansas. It shows how the state can divided according to which airport is the closest as the crow flies.
The flags are a sample of 500 census tracts (of 766 tracts total) within the state.
Some census tract flags may look like they are colored for one airport's region but are actually in another airport's region. The census tract flags are colored with which airport they are closest to as the crow flies along the surface of the earth (the Haversine distance formula). The region boundaries that are displayed on map were computed assuming assuming the earth is flat. (The lines that divide regions are a Voronoi diagram, and I couldn't find any algorithm that calculate the lines on a sphere such as the earth.) In short, although a few census tracts may look like they're mislabeled near a boundary, it's actually the boundary that is slightly wrong.
For more information, see the full report:
http://www.mark-pearson.com/airport-distances/

MCI serves 1,340,583 people in KS
Kansas City International Airport

ICT serves 1,195,700 people in KS
Wichita Mid-Continent Airport

TUL serves 78,863 people in KS
Tulsa International Airport

LNK serves 76,021 people in KS
Lincoln Airport (was Lincoln Municipal)

SGF serves 54,307 people in KS
Springfield-Branson National Airport

AMA serves 52,957 people in KS
Rick Husband Amarillo International Airport

XNA serves 25,120 people in KS
Northwest Arkansas Regional Airport

DEN serves 19,155 people in KS
Denver International Airport

COS serves 10,412 people in KS
City of Colorado Springs Municipal Airport

dividing line

3,128 people
closest airport: ICT

2,568 people
closest airport: ICT

2,234 people
closest airport: TUL

closest airport: ICT

closest airport: MCI

773 people

closest airport: LNK

closest airport: AMA

closest airport: TUL

closest airport: SGF

closest airport: COS

closest airport: DEN

3 people

602 people

closest airport: XNA