Prices in US dollars, read from each provider on October 5, 2026. They change often: confirm on the provider page before paying. Only price and fit to your route decide the order of results.
Buenos Aires and Uruguay face each other across the Río de la Plata, and ferries run to Colonia del Sacramento and to Montevideo. A day in Colonia is one of the most common excursions from the Argentine capital. It is also an international crossing: an Argentina-only plan stops working on the Uruguayan side. The river is wide, so do not count on land signal for the whole crossing, and on arrival the phone has to register on a Uruguayan network.
Cheapest option by usage
7 days in each country, 14 days in total.
Usage
Data
Cheapest option
Total
LightMaps & messages
4.9 GB
One plan per country: Nomad (Argentina) + Ubigi (Uruguay)
$18.50
StandardSocial media
11.2 GB
One plan per country: Ubigi (Argentina) + Ubigi (Uruguay)
$40.00
HighVideo & work
25.2 GB
One plan per country: Vodafone Travel eSIM (Argentina) + Yesim (Uruguay)
$55.10
Plans that cover both Argentina and Uruguay
21 regional or global products list both countries.
Prices in US dollars, read from each provider on October 5, 2026. They change often: confirm on the provider page before paying. Only price and fit to your route decide the order of results.
Buy a plan that names both countries, even for a day trip. Regional plans for South America do not all include Uruguay.
Keep the ferry ticket and return booking saved offline. If data does not come back after docking, toggle airplane mode once.
Frequently asked questions
Can I use one eSIM in Argentina and Uruguay?
Yes, if the plan lists both. 21 of the products we track do, starting at $5.00. Whether that beats two local plans depends on your days and usage: the planner on this page shows both totals.
Is one plan cheaper than two for Argentina and Uruguay?
With 7 days in each country and standard use (about 11.2 GB), the cheapest option on October 5, 2026 was Ubigi (Argentina) + Ubigi (Uruguay) at $40.00. The cheapest single plan covering both was $47.00.