Quick question, I'm booking a flight from YYC to JNU. I can get all the way there on Alaska Airlines, but it's a 6 am departure out of Calgary. The Ultimate Rewards mall is showing me another option going YYC-SEA leg on AC and then the rest of the way on Alaska. This leaves a few hours later and has half the layover in Seattle. This isn't a code share, so would a checked bag go all the way through, or would I need to recheck it with Alaska in Seattle? Or I might just get away with carry-on for three weeks, and take the extra sleep.