Does an Argentina eSIM work in Patagonia and at Iguazú?

In the towns, at the falls and along the main routes, yes; the gaps are on the long roads between them and on the glacier trails, as on any SIM. Download the maps before each leg.

Can I use the same eSIM in Chile or Uruguay?

Not an Argentina-only plan. For a day in Colonia or a crossing to Chilean Patagonia, choose a South America plan that lists both countries.

Can I keep my home number active alongside a Argentina eSIM?

Yes. Most modern phones run two lines, so your home number stays available for calls and texts while the eSIM carries the data.

Which networks does a Argentina eSIM connect to?

ONE eSIM's plans use Movistar 4G, Personal 5G; the other providers in this comparison may use different local partners.

How much data do I need for a week in Argentina?

For maps, messaging and photos, 3 GB is enough for most people; add a bigger plan or the daily unlimited option if you stream or work on video calls.

Best eSIM for Argentina 2026: 5 Providers Priced

Argentina eSIM prices checked 27 Oct 2026: ONE eSIM is cheapest at 1 of 5 sizes from 1 to 20 GB, from $4.95 for 1 GB.

Short answer: ONE eSIM has the cheapest 1 GB eSIM for Argentina at $4.95 for 7 days; the next cheapest is Airalo at $5.00. Prices checked 27 October 2026 across ONE eSIM, Airalo, Holafly, Saily and Nomad; the full table is below.

Argentina is Buenos Aires for tango, steak and the Sunday markets, then the distances: Iguazú in the north, Mendoza's wineries, Bariloche and the Lake District, and Patagonia down to El Calafate and Ushuaia. Data matters for Cabify and Uber, for the SUBE transit card and for the flights and buses that stitch the country together. Argentine SIMs need a passport and a shop; an eSIM is working at Ezeiza before the queue for the taxi. On 27 October 2026 we checked Argentina eSIM prices across ONE eSIM, Airalo, Holafly, Saily and Nomad, lining up the cheapest plan at or above each size so the comparison is like for like.

Quick answer: Argentina eSIM prices by size

1 GB: ONE eSIM at $4.95 (7 days); next cheapest is Airalo at $5.00 (3 days).
3 GB: Airalo is cheapest at $9.50 (3 days); ONE eSIM is $13.20 (15 days). Best for longer trips: one plan lasts 15 days; Airalo's lasts 3, so a trip longer than that needs two of them ($19.00).
5 GB: Airalo is cheapest at $16.00 (7 days); ONE eSIM is $22.00 (30 days). Best for longer trips: one plan lasts 30 days; Airalo's lasts 7, so a trip longer than that needs two of them ($32.00).
10 GB: Airalo is cheapest at $28.00 (7 days); ONE eSIM is $39.02 (30 days). Best for longer trips: one plan lasts 30 days; Airalo's lasts 7, so a trip longer than that needs two of them ($56.00).
20 GB: Airalo is cheapest at $46.00 (15 days); ONE eSIM is $72.19 (30 days). Best for longer trips: one plan lasts 30 days; Airalo's lasts 15, so a trip longer than that needs two of them ($92.00).

Argentina eSIM prices compared (1 GB to 20 GB)

Argentina eSIM prices in USD: each provider's cheapest plan at or above the size, validity in brackets. Cheapest marks the lowest price. Where another provider is cheaper, a note under ONE eSIM shows where it still wins: more data for the money, a lower price per GB, or more days. Checked 27 October 2026.
Data	ONE eSIM Our price	Airalo	Holafly	Saily	Nomad
1 GB	$4.95 (7 days) Cheapest, saves $0.05	$5.00 (3 days)	–	$5.29 (7 days)	$5.00 (7 days)
3 GB	$13.20 (15 days) Best for longer trips: one plan for 15 days	$9.50 (3 days) Cheapest	–	$9.99 (30 days)	$9.50 (30 days)
5 GB	$22.00 (30 days) Best for longer trips: one plan for 30 days	$16.00 (7 days) Cheapest	–	$16.99 (30 days)	$16.00 (30 days)
10 GB	$39.02 (30 days) Best for longer trips: one plan for 30 days	$28.00 (7 days) Cheapest	–	$29.99 (30 days)	$28.00 (30 days)
20 GB	$72.19 (30 days) Best for longer trips: one plan for 30 days	$46.00 (15 days) Cheapest	–	$46.99 (30 days)	$47.00 (30 days)

Holafly sells only unlimited plans for Argentina, so it has no price in the GB rows; its 7-day plan is in the week table below.

A week of unlimited data in Argentina

7 days of unlimited data in Argentina: ONE eSIM's daily plan bought for 7 days against 7-day unlimited plans, with what each gives a day. USD, checked 27 October 2026.
Provider	7 days	What you get
ONE eSIM	$32.76	1 GB a day at full speed, then 512 Kbps until the next day (7 × $4.68)
Airalo	$34.50	3 GB a day at full speed, then 1 Mbps (fair use)
Holafly	$36.90	No daily cap; fair use may slow very heavy use
Saily	$34.99	3 GB a day at full speed, then up to 1 Mbps
Nomad	–	No 7-day unlimited plan

For a week, ONE eSIM's 1 GB a day plan is the cheapest way to stay online all day at $32.76. The cheapest of the others is Airalo at $34.50, which gives more full-speed data a day; compare by how much you use a day, not by the word unlimited.

Which networks power Argentina eSIMs

In Argentina, ONE eSIM plans run on Movistar and Personal, with 4G and 5G depending on the plan and your device. Every plan names its network and generation before you pay, so you can pick the operator you want. Coverage follows each carrier's own build, so expect the strongest signal in the cities and along the main roads and rail lines, and check the plan's network if you are heading somewhere remote.

Which eSIM should you choose for Argentina?

Short trip, light use (up to 3 GB): Airalo at $9.50 (3 days) is the cheapest at 3 GB; ONE eSIM is best for longer trips (one plan for 15 days).
Two weeks or more (5 to 10 GB): Airalo at $28.00 (7 days) is the cheapest at 10 GB; ONE eSIM is best for longer trips (one plan for 30 days).
Heavy use (20 GB): Airalo at $46.00 (15 days) is the cheapest at 20 GB; ONE eSIM is best for longer trips (one plan for 30 days).
Streaming or video calls every day: compare the unlimited plans above by how much full-speed data each gives a day.

Getting your Argentina eSIM set up

Confirm your phone supports eSIM and is carrier-unlocked before you buy.
Install the eSIM over home or airport Wi-Fi before you fly; the QR code or install link needs a working connection to download.
Land in Buenos Aires, switch on the eSIM line and enable data roaming, then check for a signal from Movistar and Personal before you head for the taxi rank or the train.

Argentina eSIM FAQ

Does an Argentina eSIM work in Patagonia and at Iguazú? In the towns, at the falls and along the main routes, yes; the gaps are on the long roads between them and on the glacier trails, as on any SIM. Download the maps before each leg.
Can I use the same eSIM in Chile or Uruguay? Not an Argentina-only plan. For a day in Colonia or a crossing to Chilean Patagonia, choose a South America plan that lists both countries.
Can I keep my home number active alongside a Argentina eSIM? Yes. Most modern phones run two lines, so your home number stays available for calls and texts while the eSIM carries the data.
Which networks does a Argentina eSIM connect to? ONE eSIM's plans use Movistar 4G, Personal 5G; the other providers in this comparison may use different local partners.
How much data do I need for a week in Argentina? For maps, messaging and photos, 3 GB is enough for most people; add a bigger plan or the daily unlimited option if you stream or work on video calls.

How we check prices

We read each provider's public Argentina page on 27 October 2026 and took its cheapest plan at or above each size, in US dollars before any coupon, with the validity in brackets; ONE eSIM prices are our live list prices on the same day. Prices move, so we re-check every month and keep the date on the page and in the short answer. If a number is out of date, write to support@oneesim.app and we will correct it.