On Wednesday I'll be flying from JFK to YUL. I'm BA Silver/OneWorld Sapphire, which claims access to 230 lounges. AFAIK the flight is economy only (my ticket says Y class, J basis) but I am entering (monday)/leaving (thursday) north America on J class BA flights.

The AA flight to YUL is departing from terminal 9 on AA5177. My question is: will I have access to an AA (admirals?) lounge? BA seem to say yes, but AA implies no for USA to Canada flights. Anyone out there with experience?