Originally Posted by
Plumber
From Aeroplan website:
You can submit a request for missing miles within eleven months of the flight departure date. Some exceptions may apply.
I do not know what the 'exceptions' may be.
Well you have to have had an AE account at the time of the flight I believe.
I didn't bother getting an AE account at first and unlike say... OneWorld (well, BA) you can't credit flights that were flown before your account was setup.