Flight stats shows no rating for that flight. My guess is that the stats are updated monthly and the default on the WN website is 100%. When I check my Mon 888 BUR to OAK, Flight stats shows 4.9/5 and WN 100%. I know it's not 100% in the last year because I've had a couple of delays that were equipment related. Whereas WN only shows for the previous month. So I have to go with Flight stats for accuracy.