From the Southwest: TX 121/Sam Rayburn Tollway
Drive north on TX 121 (Sam Rayburn Tollway)
Do not exit onto US 75. Instead, follow signs for TX 5 North. The freeway will end. Stay left towards Medical Center Drive, then stay left toward TX 5 North.
At light with McDonald, go straight to merge onto McDonald (TX 5).
Drive 1.2 miles. Turn right on Industrial Blvd.
Drive 1 mile. Turn right on Airport Dr. (stop light)
Turn left at first stop sign (Co Rd. 546).
Follow this road as it winds around the airport, and take a right on Co. Rd. 317 (about 1.5 miles).
Drive .5 mile. Arrive at 3933 CR 317 on the left.
From the South: US 75/Central Expressway
Drive North on US 75 (Central Expressway), past Allen exits.
Take exit 38C for Sam Rayburn Tollway S toward TX 5 North.
Follow directions above (starting with second bullet point).
From the North: US 380
Drive on US 380 towards McKinney. Turn right (if heading east) or left (if heading west) onto Airport Drive. (Airport dead ends at US 380, so you only have the option to head south).
Turn left at stop sign after airport (Co. Rd. 546).
Follow this road as it winds around the airport (about 1.5 miles) and take a right on Co. Rd. 317.
Drive one-half mile. Arrive at 3933 CR 317 on the left.