The answer depends on whether you are flying domestically or internationally. On domestic flights within the USA and to Canada/Mexico, United First® is the highest class of service; it features a wider seat with more recline and better food than economy, but it is not a "lie-flat" bed. For long-haul international flights, the equivalent of business class is United Polaris®. Polaris is a significantly more luxurious experience than United First, offering individual "pods" with 180-degree flat beds, direct aisle access, and premium Saks Fifth Avenue bedding. In 2026, United has also introduced "United Business" on specific shorter international routes (like those to Latin America or the Caribbean), which is virtually identical to domestic United First. Essentially, if you want a bed to sleep on across the ocean, you are looking for Polaris, whereas if you are flying from New York to Los Angeles, you will likely be in United First.