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 (AirportCode VARCHAR, City VARCHAR)
TABLE: CREATE TABLE AIRLINES (uid VARCHAR, Airline VARCHAR)
TABLE: CREATE TABLE FLIGHTS (DestAirport VARCHAR, Airline VARCHAR)

### Question ###
How many United Airlines flights go to City 'Aberdeen'?

### Accurate SQL ###

SELECT COUNT(*) FROM FLIGHTS AS T1 JOIN AIRPORTS AS T2 ON T1.DestAirport = T2.AirportCode JOIN AIRLINES AS T3 ON T3.uid = T1.Airline WHERE T2.City = "Aberdeen" AND T3.Airline = "United Airlines"