After the Battle did a whole issue on Malta years ago. As far as I recall (my copy is somewhere in my loft) it listed:
Luqa
Safi
Hal Far
Qrendi
TaQali
The Racecourse
as land airfields and Masaxxlok Harbour/Kalafrana plus St Pauls Bay as sea landings. It only listed one very temporary airfield on Gozo.