Originally Posted by
britenbsas
You would also avoid the reciprocity fee if you crossed the land border into Argentina and then flew from IGR to AEP (being a domestic flight, you would not pass through immigration again upon arrival in Buenos Aires).
FWIW, there is a sort-of internal immigration check when flying from outlying points in Argentina to BsAs, especially cities "near" land boundaries.
Definitely a police check of documents at SLA when flying to BsAs late 2009 but not from REL (not near anywhere interesting). I almost seem to remember such a check at IGR in 2003. However, I don't think they're looking for payment of reciprocal fees.