What are the cost and inconvenience impacts if you don't make the connection at SFO? If it was me, if the impacts are significant, and if I couldn't get UA to rebook, then I would consider booking myself on one of the 3 non-stop YVR-LAX flights that leave YVR before 09:00. One-way economy prices for flights next week are currently floating around as follows: AirCanada C$141, United C$191 (AC operated flight), Westjet C$161, Delta C$191 (Westjet operated flight), and American C$141 (operated by Compass as Eagle.)