So you're saying "ALL AIRLINES" have specific flights that don't operate as scheduled half the time? Sorry - not buying it. Again, we're not talking about flights being late - of course that happens. We're talking about the flight being cancelled (when weather is not a factor) or a significant equipment change at the last minute (E75 to Q400). And with every few posts there are more examples offered by others of issues with this same route. Unclear what a "hidden crew and/or aircraft issue" means - for anyone flying PDX - OAK last week apparently it means "pound sand".