Continuity mistake: During the Charger/Mustang chase scene you see Steve McQueen's Mustang skid around a lot of corners. If you look at the street you can see the skid marks from the previous takes.
Continuity mistake: When the security guard is shot at the airport, the door is shattered by the bullet leaving a visible hole. In the closing scene, when the priest is giving the last rites, the glass in the door is intact. (01:50:00)
Suggested correction: The security guard was shot by Ross through the left door. As the priest is giving the last rites, seen through the unbroken glass of right door, the security guard who arrived on scene with Delgetti can be seen removing his hat through the shattered glass of the left door.
Continuity mistake: During the chase scene where the Charger crashes into a parked white car, the screen blinks red to give the illusion of a strong impact. However, after the split second blink is finished, the car magically repairs itself and the Charger completely disappears.
Continuity mistake: When Bullitt leans over to read the piping chart, the coat he has draped over his shoulder changes from neatly pressed and folded to wrinkled (and folded differently) between full shots and close-ups. (00:18:30)
Continuity mistake: During the chase, Bullitt's Mustang skids off the road and kicks up a huge cloud of brown dust that engulfs the car. It should now be coated with dust, but in the next shot of it speeding away, the Mustang is sparkling clean again. (01:14:05)