Thanks girls for reassuring me!
How long is the flight from Memphis to Vancouver - 6 hours? More? I know it's about 15 hours from Sydney to LA but can't remember what it was from LA to Vancouver. It's the waiting around when changing flights that wrecks you.
Have checked Insight out - they do a 7 day tour from Calgary to Vancouver which takes in my train trip but don't do anything in Alaska. Back to the drawing board!