(Headquarters) Long Island MacArthur Airport
2221 Smithtown Ave
Ronkonkoma, NY 11779
Telephone: (631) 913-7102
Email: kisp@hawthorne.aero

Atlanta Cobb County International Airport
Post Office Box 339
Kennesaw, GA 30156
Telephone: (770) 422-4300
Email: kryy@hawthorne.aero

Chicago Executive Airport
1120 South Milwaukee Avenue
Wheeling, IL 60090
Telephone: (847) 325-0566
Email: kpwk@hawthorne.aero

Chippewa Valley Regional Airport
3800 Starr Ave
Eau Claire, WI 54703
Telephone (715) 835-3181
Email: keau@hawthorne.aero

Tuscaloosa Regional Airport
4800 Carter Drive
Tuscaloosa, AL 35401
Telephone: (205) 349-3991
Email: ktcl@hawthorne.aero

Sioux Gateway Airport
5815 Mitchell Street
Sioux City, Iowa 51111
Telephone: (712) 258-6563
Email: ksux@hawthorne.aero

ExcelAire, Long Island, NY
2221 Smithtown Ave
Ronkonkoma, NY 11779
Telephone: (631) 737-0477