United Airlines is significantly boosting its flight schedule at its San Francisco (SFO) hub, a move aimed at strengthening its position against competitor Alaska Airlines. The expansion follows Alaska's decision to cut back on its SFO service to focus on other West Coast markets, creating an opportunity for United to capture a larger share of local travelers. The increased frequencies will apply to routes serving United's other hubs, as well as intra-West and Hawaii flights, which are key markets for local San Francisco passengers. This strategic maneuver is designed to solidify United's dominance at SFO and further distance itself from rival carriers in the region.