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 FLIGHTS (FlightNo VARCHAR, SourceAirport VARCHAR)
TABLE: CREATE TABLE AIRPORTS (AirportCode VARCHAR, City VARCHAR)

### Question ###
What are flight numbers of flights departing from City "Aberdeen "?

### Accurate SQL ###

SELECT T1.FlightNo FROM FLIGHTS AS T1 JOIN AIRPORTS AS T2 ON T1.SourceAirport = T2.AirportCode WHERE T2.City = "Aberdeen"