Although ‘Ferris Bueller’s day Off’ came out on June 11, 1986, BaseballProspectus.com tracked down the exact game Ferris, Sloane and Cameron were watching at Chicago’s Wrigley Field (the Cubs vs the Braves on June 5 1985 – Braves won 4-2) by analyzing who was on the field and how they fared in each inning. Ferris Bueller’s Day Off took place on June 5, 1985!
The painting that Cameron admires is called “Sunday Afternoon on the Island of La Grande Jatte“, by Georges Seurat.
Almost all the license plates in Ferris Bueller’s Day Off were named after other John Hughes movies. Ferris’s mom’s car says “VCATION,” for “National Lampoon’s Vacation.” His dads reads “MMOM,” for “Mr. Mom.” And his sisters says “TBC,” for “The Breakfast Club.” On top of all that Mr. Rooney’s car says “4FBDO,” for Ferris Bueller’s Day Off.
The Parade sequence (Twist and Shout scene) was filmed during the Von Steuben Day Parade. An annual event in the Chicagoland area.
Charlie Sheen stayed awake for more than 48 hours before the scene was shot. He reprised his character in the exact scene from The Goldbergs’ tribute episode in 2015.
John Hughes wrote the script in six days.
The song “Danke Schoen” is heard four times in the movie; When Ferris sings it in the shower, when Ed Rooney sings it after ringing the Buellers’ doorbell, when Ferris lip syncs the Wayne Newton version during the parade, and when Jeanie sings it while walking down the stairs at the police station
Whenever Mr. Rooney and Ferris have a conversation with each other, only one of them speaks throughout the entire conversation; the other is completely silent.