Yes, you can absolutely use Chase Sapphire (Preferred or Reserve) points for United Airlines through two primary methods in 2026. The most popular way is to transfer points at a 1:1 ratio to the United MileagePlus program. Once transferred, the points become United miles, which can be used to book "Award Flights" directly on United.com or the United app. The second method is to book a flight through the Chase Travel portal. If you have the Sapphire Preferred, your points are worth 1.25 cents each; if you have the Sapphire Reserve, they are worth 1.5 cents each. Booking through the portal is often better for inexpensive "cash" fares, while transferring to United is usually superior for high-value Business Class (Polaris) seats. In 2026, United has updated its award charts, so it is vital to compare the "portal price" against the "mileage price" before committing your points. Remember that once you transfer Chase points to United, they cannot be moved back to Chase, so ensure the award space is available before you hit the transfer button.