I'm a dual citizen of Canada and Hong Kong and as such, have two passports. My trip starts in La Paz, Bolivia and ends in Buenos Aires, Argentina. I will be using my Canadian passport to enter Bolivia visa-free (as there is no visa-free entry for HK passport holders for Bolivia). However, I know that I can avoid paying the reciprocity fee for Canadian passport holders by using my Hong Kong passport to enter/exit Argentina. I realize that the reciprocity fees only apply to the airports in Buenos Aires.

My first entry into Argentina is actually Cordoba, from Santiago, Chile. Then I'll be flying from Cordoba to Buenos Aires. Since it's a domestic flight, do I stlil have to pay the reciprocity fee upon arrival in Buenos Aires from Cordoba if I use my Canadian passport?

The reason I ask is that my Toronto-La Paz and Buenos Aires-Toronto flights are booked as one trip on the same airline. When I booked it, I provided my Canadian passport number. I know that I have to enter/exit Argentina on the same passport, so if I enter Argentina on my HK passport to avoid the reciprocity fee, I have to exit Argentina on my HK passport as well. I have read enough about using two passports from other travellers to know that it shouldn't be a problem for me to check into my flight from BA to Toronto with both passports to show them which one I will be exiting with (my HK one, which I entered Argentina with) and which one I will be entering my destination with (Canadian, especially since my flight connects in the US)... but if I can avoid the hassle of showing both passports by entering Argentina on my Canadian one in Cordoba AND not have to pay the reciprocity fee in Buenos Aires when arriving from Coroba, then all the better.

Sorry for the incredibly long-winded explanation, but if anyone could shed some light on this, it would be greatly appreciated!