I have been watching for flights from SEA to YYC in July next year. To appear as Avios bookable they have to be available for the lowest AS mileage rate (5K for that route). I can see flights in May and June on AS,AA and the BA website, but in weeks of watching I have not seen a single day in July with availability. I am now starting to think they won't release any Avios bookable flight in the peak months of summer. I wonder if anyone has experienced this before?