Can I upgrade from basic Economy to Economy on United?

United Airlines allows travelers to upgrade their seats from basic economy to the economy class cabin. However, the upgrade is only given when there is a seat available in that preferred cabin. Moreover, if you also booked your flight on United Airlines and want to know the difference between United Economy vs Basic Economy. The major difference between these two is their fare and the amenities they offer. While basic ecomic is cheaper, it comes with limited perks. On the other hand, the Economy cabin provides comfortable seats, priority services, and so on.