Question : What is the likelihood your flight will be delayed for this route?
Answer : This particular route gets passengers to Boeing Field International Airport on time 50% of the time, which puts it in the 38th percentile worldwide. If a flight is late, expect an average of over half an hour added to your flight time.
Question : Is this route your best bet for getting to Seattle with minimal delays?
Answer : IND to BFI currently scores 2 out of a possible 5 stars in promptness. This score combines both the number of delayed flights and total delay minutes. With 2 stars, you should feel rather worried about getting to Seattle on time.