We arranged transportation to and from Ezeiza before departing to ensure an easy transfer into the city. The car service was arranged through ApartmentsBA, the service from which we rented our apartment, but you can arrange the transportation directly with the company.
Orvitur provided our transfer services. We provided our flight information, including the arrival time, and a representative was waiting in the main hall next to the "Taxi Ezeiza" information booth. There were many, many signs for arriving travelers, so it may take a few minutes to find the correct one. The staff person called the driver and took us outside as he was pulling up. They loaded our bags and we were on our way!
The ride into the city took around 30/40 minutes and cost $48USD.
We prearranged for a driver to take us back to the airport, but decided we wanted to switch the pick up time. I sent an email to the company and within five hours we had a confirmation. The return trip was as smooth as the arrival.
A note of caution if paying in US currency - if there are any tears or markings (ink or otherwise), they will not accept it. Luckily I had just enough pesos left!
I strongly recommend you utilize this service!
Here is the contact information:
Email Address: Incoming@orvitur.com
Office number: 5217-3357