Below is the list of tables from the database along with their columns and datatype. Need to generate an accurate SQL query for the question.
Only use the columns present in the respective table. Only use the columns which are required to generate the SQL query. Only use table joins if required and not otherwise.

### Tables ###
TABLE: CREATE TABLE airports (city VARCHAR, country VARCHAR)

### Question ###
Return the cities with more than 3 airports in the United States.

### Accurate SQL ###

SELECT city FROM airports WHERE country = 'United States' GROUP BY city HAVING COUNT(*) > 3