Hi, Vox Borealis!
It is clear from your post that you’re looking for a Mass to attend in the Roman or Latin tradition. If I may, please allow me to make a suggestion: why not use your trip to Toronto as an opportunity to experience our Catholicism in an entirely different liturgical light? There is a wonderful
Eastern Catholic parish, St. Elias, located in Brampton, just on the outskirts of Toronto…
saintelias.com/ca/
St. Elias parish is part of the Ukranian Greek Catholic Eparchy of Toronto and is in
full communion with Rome. This means that the Divine Liturgy (“Mass” in the Roman Catholic church) is
fully Catholic, just as Catholic as any Novus Ordo or Tridentine Mass you may attend. As a Catholic yourself, you are
absolutely free to attend (and, yes… it does “count” toward your Sunday obligation

) and to receive Our Lord in Holy Communion (provided, of course, that you are in a state of grace that would allow you to do so in
any Catholic church).
As a Ukranian Greek Catholic Church, St. Elias parish worships in the
Byzantine tradition. From what I understand, the parish is
very welcoming and accommodating to visitors such as yourself.
It’s apparent that you’re very familiar with both the Novus Ordo and Tridentine traditions as practiced by the Latin Church - what a wonderful opportunity this would be to add yet another Catholic liturgical worship tradition, the Byzantine tradition, to your personal list of Catholic experiences!
…just something to think about, my friend…