Economics BA/BS programs typically have the same upper level undergraduate core (intermediate microeconomics, intermediate macroeconomics, econometrics) plus upper level economics electives to fill out the major. However, the academic differences that may matter to any given student include (a) how math/statistics intensive the core and elective economics courses are (more math/statistics = better for pre-PhD, but not necessarily for other goals), (b) what types of economics electives are offered.
Other academic differences include other degree requirements. A US university with heavy general education requirements may mean that a transfer from a UK university with no general education requirements will have to take many “catch up” courses, for example.
Obviously, net price after scholarships and financial aid are the most important factor for most students’ choice of university, so costs need to be considered by most. Other aspects like social ones can also matter (for example, if the university is particularly fraternity/sorority heavy, it could be that most students by junior year are in them, so that a transfer student may find the social scene already divided into smaller camps that s/he is on the outside of).