Question : What are the chances this flight will be delayed?
Answer : This particular route gets passengers to Boeing Field International Airport on time 50% of the time, which puts it in the 39th percentile worldwide. If a flight is late, expect an average of less than 15 minutes added to your flight time.
Question : What's the likelihood of you being delayed on this route?
Answer : MEM 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.