Question : What are the chances this flight will be delayed?
Answer : Flights from MKE to BFI are on-time 80% of the time, ranking in the top half of the world. 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 Seattle with minimal delays?
Answer : The best measurement of overall promptness combines both on-time percentage and total delay minutes. MKE to BFI currently has 3 stars out of 5, an average score at best.