The short answer
Most trips that take in both countries run from Rio de Janeiro to Iguacu and across the river to Argentina, then on to Buenos Aires. I priced the Latin America regional plans of six brands on the same day and read how each one limits unlimited. For two weeks or a month across the two I would buy Ringo Light. For three days or a bucket, a rival is cheaper.
One eSIM for Brazil and Argentina, unlimited data at full speed: 2 weeks at $47.99 or 30 days at $65.99, nothing renews. Airalo asks $60 for 15 days and $97 for the month.
For a long weekend in Rio or Buenos Aires: 3 days of unlimited at $19.50 with 3 GB a day at full speed, 5 GB for 30 days at $22 and 20 GB at $49.
Days, not gigabytes, so no bucket to watch between Rio and Buenos Aires. $40.90 for a week; sharing limited to 1 GB a day.
20 GB a month for $26 on a monthly plan that renews and can be cancelled after 3 months. Its Best LATAM plan leaves out Peru and Costa Rica, neither of which is on this route.
Prices read on 25 October 2026: Airalo, Holafly, Saily, Nomad, Ubigi on their own sites or listings, Ringo Light from its catalogue. All in US dollars unless stated. Treat every number as a snapshot.
See the full price index for every country.
The prices, charted
US dollars, 25 October 2026. Ringo Light sells 14 days, Airalo and Holafly 15. Ubigi sells unlimited for 7 or 30 days only. Nomad and Saily sell no unlimited plan for the region.
The 30-day plan at each brand. Ringo Light is unlimited data at full speed. Airalo slows you after 3 GB a day. Ubigi's month is 60 GB at full speed, then 2 Mbps.
Holafly sells no buckets and Saily's regional plan stops at 10 GB, $44.99. Ubigi also sells 20 GB a month for $26 on a plan that renews, with a 3-month minimum. Ringo Light sells no bucket: its 30 days is unlimited.
Side by side
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Get Ringo Light for Brazil and Argentina, from $47.99.
Installed once, next to your own SIM. Your eSIM arrives by email in seconds.
- 2 weeks $47.99
- 30 days $65.99
We sell data eSIMs for now to fund the full Ringo service. Ringo is self funded. Every plan bought here pays for the build of one plan that works everywhere.
Want to keep your own number abroad?
That is the full Ringo service: one plan that works everywhere, with your own number included.
It is a separate product from Ringo Light and it is still being built, so it is not on sale yet. Join the waitlist to hear when it opens.
What to do in Brazil and Argentina, and what your phone needs for it
Eight places that first trips to Brazil and Argentina often include, from Rio to Iguacu to Patagonia, with the one thing your phone does for you at each. The cities have good signal. The falls, the glaciers and the parks do not always, so I would save tickets and maps offline.
One plan for both countries: Ringo Light
I would buy one regional eSIM for this trip, not two country ones. The usual route crosses at Iguacu, where the falls sit on both sides of a river, and a second plan to install is a chore at the border. Ringo Light's Latin America eSIM costs $47.99 for 2 weeks and $65.99 for 30 days, unlimited data at full speed, nothing renews. Airalo asks $60 for 15 days and $97 for the month. Holafly asks $62.90 and $99.90.
I added up Ringo Light's country plans from their own pages. Brazil's 2 weeks is $37.99 and Argentina's $44.99, $82.98 together, against $47.99 for the Latin America trip that covers both. For a month, Brazil is $64.99 and Argentina $56.99, $121.98 together, against $65.99.
There is a catch, and it favours the country plans. If you spend the whole time in one of the two, Brazil's 2 weeks at $37.99 is under the regional $47.99, and a month in Argentina at $56.99 or in Brazil at $64.99 is under the regional $65.99. I would only go that way if you are sure you will not cross.
Which plans cover both countries
Ringo Light covers Brazil and Argentina on its 18-country eSIM, with Uruguay, Paraguay, Chile and the rest of the list in the Latin America post. The other five brands sell regional plans too. That post does not name Brazil and Argentina on each rival's list, so I could not confirm both countries for every one on the day. I would look at each list before paying.
What I can say from the post: Ubigi's Best LATAM plan leaves out Peru and Costa Rica, and Saily's covers 12 countries and skips four in Central America. Neither affects a route from Rio to Buenos Aires. Coverage is good in the cities. It thins out in the Amazon, the Pantanal and the Patagonian parks, whichever eSIM you carry, so I would save maps before those days.
If you want a data bucket: Airalo or Ubigi
- Airalo, $36 for 10 GB. The cheapest 10 GB on the list, and the cheapest 20 GB at $49. Latamlink also sells 5 GB for 30 days at $22.
- Ubigi, $39 for 10 GB. 25 GB for 30 days at $58. For a stay of three months or more, its monthly plan gives 20 GB for $26 a month, renewing, with a 3-month minimum.
- Nomad, $39 for 10 GB. 20 GB at $65, on Claro, Tigo, Telcel and other local networks.
- Saily, up to 10 GB. 10 GB for 30 days at $44.99, with 5 GB at $31.99 and 3 GB at $20.99. No 20 GB and no unlimited plan for the region.
- ✓Ringo Light, no buckets. For 10 GB, Airalo at $36, Nomad at $39 and Ubigi at $39 all cost less than Ringo Light's 2 weeks at $47.99. For 20 GB across a month, Airalo at $49 is under its $65.99. Buy Ringo Light for unlimited, not for a bucket. I would rather you read that here than at checkout.
What Ringo Light is
Ringo Light is the data eSIM Ringo sells to fund the full Ringo, one plan with your own number ported onto it. I write for Ringo, so weigh that. For Brazil and Argentina it sells two trips on one eSIM that works in 18 countries, both unlimited data at full speed: 2 weeks at $47.99 and 30 days at $65.99. Nothing renews. The eSIM arrives by email and installs with one scan, no app.
The card to buy it sits further up this page, after the side-by-side table.
Pick by trip
Airalo Latamlink unlimited, 3 days, $19.50, with 3 GB a day at full speed. Ringo Light sells no 3 days.
Airalo, 7 days of unlimited at $39, or Holafly at $40.90. Both are under Ringo Light's 2 weeks.
Ringo Light unlimited, 2 weeks, $47.99, against $60 for 15 days at Airalo.
Ringo Light unlimited, 30 days, $65.99, against $97 at Airalo.
Airalo 5 GB for 30 days at $22, or 20 GB at $49.
None of these travel plans does that. The full Ringo, which Ringo Light funds, ports the number you have.
Frequently asked questions
How we compared, and our sources
Airalo, Holafly, Saily, Nomad, Ubigi, Ringo Light
We priced Airalo, Holafly, Saily, Nomad, Ubigi and Ringo Light for Brazil and Argentina on 25 October 2026, all on the same day, in US dollars. Each rival's price comes from its own website where it showed dollars, otherwise from an esimdb.com listing, and every source and its date is listed below. Ringo Light's prices come from the catalogue our checkout charges.
We compare the trips people actually book: a week, two weeks and a month of unlimited data, and a 10 GB bucket. We read each brand's fair use and speed rules and quote them as the brands state them. We did not run speed tests, so this page makes no speed claims for any brand.
Ringo Light is our own product. We put it in the table on the same terms as everyone else, and where a rival is the better buy the page says so.
Left out: Maya Mobile. We could not read its own prices for this country on the day, so it stays out rather than being guessed.
- Airalo: www.airalo.com/latin-america-esim?currency=USD, Latamlink unlimited in dollars on the site, 25 October 2026; buckets from esimdb.com/region/latin-america/airalo, listing dated 6 October 2026
- Holafly: esim.holafly.com/esim-latin-america/, prices in dollars and the 18 countries on its own page, 25 October 2026
- Saily: saily.com/esim-latin-america/, prices in dollars on saily.com, read 25 October 2026; no unlimited plan for the region
- Nomad: www.nomadesim.com/latin-america-esim, prices in dollars, plans, countries and networks on its own page, 25 October 2026
- Ubigi: cellulardata.ubigi.com/data-plans-and-coverage/ubigi-esim-data-plans/, Best LATAM prices and countries on its own site, 25 October 2026; full-speed amounts from esimdb.com/region/latin-america/ubigi, listing dated 6 October 2026
- Ringo Light: our own catalogue, the prices the checkout charges on 25 October 2026.
Written and priced by the Ringo team. Prices change often; if you spot one that has moved, tell us through the contact page and we will update the table.
