Question : How often are flights late from Nantucket Memorial Airport (ACK) to O'Hare International Airport (ORD)?
Answer : Passengers on the Nantucket to Chicago route have been getting to their destination on time an incredible 100% of the time. If a flight is delayed, though, expect an average of less than 15 minutes added to your flight time.
Question : Is this route your best bet for getting to Chicago with minimal delays?
Answer : The best measurement of overall promptness combines both on-time percentage and total delay minutes. ACK to ORD currently has 4 stars out of 5, earning it one of the best performances in the world.