For what it is worth, Flight Aware is suggesting BA266’s average delay is 20-40 mins. (Although we were once on BA266 scheduled for an 18:25 departure, but actually left at 23:22!)
Even with the occasional delay, I appreciate the PDX-LHR route rather than the the previous I-5 drive and parking or Alaska shuttle to Seattle, flights with transfers etc
My major complaint out of PDX is catering and I hope LSG Skychef has improved -