Marathon Oil's Gulfstream V visits Chicago after the Indianapolis 500

Marathon Oil flew from Indianapolis International Airport to Dupage Airport outside Chicago on Monday evening, May 25, 2026, a 49-minute hop in its Gulfstream V, N540M. The jet had been shuttling between Indianapolis and other Midwest airports over the previous several days.

This trip comes at the tail end of the Indianapolis 500 race week, the 110th running of which took place on May 24 at the Indianapolis Motor Speedway. The FAA issued a domestic notice for the event, warning of heavy air traffic, temporary flight restrictions over the speedway, and limited ATC services at Indianapolis International from May 21 through May 24, per the agency's notice. Marathon Oil's flight to Chicago lands the day after the race, when corporate teams often head home or to secondary offices.

Marathon Oil home-bases its Gulfstream V in Houston but the flight logs show the aircraft spent much of the previous week working the Midwest corridor—Bowling Green, Madison, Eau Claire, and back to Indianapolis multiple times. The company reported first-quarter earnings in early May and continues capital projects at its Midwest refineries, per its earnings release, though no specific event in Chicago explains the Dupage landing beyond likely executive travel following the race.