Underwriters Laboratories Inc.

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Arriving by Air

O'Hare International Airport is served by most major international and domestic airlines and has the largest number of direct destination flights in the world. It is located 16 miles southwest of Northbrook.

When driving from O'Hare, take the Interstate-294 North (Milwaukee/Rockford) exit. Stay on Interstate-294 North (Milwaukee) until you reach the Lake-Cook Road exit (approximately 12 miles). Take Lake-Cook Road east (Deerfield/Northbrook) and proceed to Pfingsten Road (third stoplight). At Pfingsten, turn right and proceed approximately half mile to UL. UL is located on the left side. There are two UL entrances: one at the Maria Avenue stoplight and one approximately 100 yards after the stoplight. Use the one after the stoplight (at the southwest corner of the UL property). Visitor parking areas are marked.

Midway Airport is served by several major airlines. It is located approximately 35 miles south of Northbrook.

When driving from Midway, take Cicero Avenue (Illinois 50) north to the Stevenson Expressway (Interstate-55). To enter Interstate-55, stay in the left lane and turn left (Interstate-55 South/St. Louis). After traveling approximately 10 miles, watch for the entrance to the Tri-State Tollway (Interstate-294 North/Wisconsin). The entrance ramp is on your right-hand side. Continue north on 1-294 for approximately 28 miles until you reach the Lake-Cook Road exit. Take Lake-Cook Road east (Deerfield/Northbrook) and proceed to Pfingsten Road (third stoplight). At Pfingsten, turn right and proceed approximately half mile to UL. UL is located on the left side. There are two UL entrances: one at the Maria Avenue stoplight and one approximately 100 yards after the stoplight. Use the one after the stoplight (at the southwest corner of the UL property). Visitor parking areas are marked.