Best eSIM guide · 2026
Best eSIM for Buenos Aires (2026): Full Comparison
5 providers scored across coverage, pricing, speed, app quality, and support. All data verified June 2026.
From the matrix
HelloRoam — Top composite rating
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The comparison
Buenos Aires eSIM providers compared
All 5 providers ranked by weighted composite score. Color-coded by value.
| Provider | Rubric score (0-5) | From / GB |
|---|---|---|
 HelloRoamHighest scoreTop composite rating | 4.6 | from $3.50/GB |
 AiraloWidest coverage catalogue | 4.5 | $4.50/GB |
 SailyLeading privacy integration | 4.2 | $3.99/GB |
 HolaflyStrongest unlimited tier | 4.3 | $2.99/day |
 NomadMost competitive per-GB rates | 4.2 | $3.00/GB |
Prices verified June 2026. Equal-weight score: Coverage Breadth 20%, Pricing Tiers 20%, Network Generation 20%, App Features 20%, Support Channels 20%.
Feature matrix
Buenos Aires spec-by-spec breakdown
Every rubric dimension compared side by side.
| Feature | HelloRoam | Airalo | Saily | Holafly | Nomad |
|---|---|---|---|---|---|
| Overall rating (0-5, our rubric) | 4.6 | 4.5 | 4.2 | 4.3 | 4.2 |
| Countries | 186+ | 200+ | 200+ | 160+ | 200+ |
| Starting Price | from $3.50/GB | $4.50/GB | $3.99/GB | $2.99/day | $3.00/GB |
| Per-GB Floor | $3.50 | $4.50 | $3.99 | $2.99/day | $3.00 |
| Founded | 2025 | 2019 | 2023 | 2017 | 2020 |
| Headquarters | United Kingdom | Singapore | Vilnius, Lithuania | Murcia, Spain | Santa Clara, CA |
| Support | Live chat + WhatsApp + email | Email + in-app chat | Email only | 24/7 chat + email | Email only |
| Guarantee | 180-day refund | 14-day refund | 30-day refund | 180-day refund | 30-day refund |
| Coverage Breadth score20% weight, 0-5 on our rubric | 4.5 | 4.9 | 4.0 | 4.3 | 3.9 |
| Pricing Tiers score20% weight, 0-5 on our rubric | 4.4 | 4.1 | 4.0 | 4.5 | 4.8 |
| Network Generation score20% weight, 0-5 on our rubric | 4.3 | 4.4 | 4.4 | 4.2 | 4.3 |
| App Features score20% weight, 0-5 on our rubric | 5.0 | 4.7 | 4.5 | 4.1 | 3.9 |
| Support Channels score20% weight, 0-5 on our rubric | 5.0 | 4.2 | 4.1 | 4.7 | 3.9 |
| Weighted Composite | 4.64 | 4.45 | 4.20 | 4.35 | 4.15 |
Score breakdown
Buenos Aires provider scores
Weighted composite score across 5 dimensions.
Methodology
How we score eSIM providers
Five dimensions, each weighted at 20 percent.
Country count, carrier partnerships, regional bundle availability
Per-GB floor, plan tier spread, value at common data amounts
Carrier routing and which network generations that carrier publishes
Installation flow, data tracking, interface quality
Channel availability and refund policy
All scores are editorial assessments based on verified data. Pricing checked weekly. See our full scoring methodology for details.
HelloRoam -- Highest Composite Score
HelloRoam scores 4.64/5 on our rubric overall for Buenos Aires, with App 5.0 and Support 5.0 on an iOS and Android app, live chat plus WhatsApp, and a 180-day refund. Plans price Argentina from $3.50/GB, below Airalo's $4.50/GB and closer to the country's own $2.10/GB comparison floor. Its fixed-USD pricing sidesteps the peso instability enrichment data flags as a real planning risk for anyone pricing a local SIM in advance.
Dimension scores, 0-5 on our rubric
Pros
- 186 countries with 204+ carrier partnerships for reliable local routing
- Fixed plans from $3.50/GB across popular destinations
- Unlimited plans from $5 for short stays, scaling by duration
- iOS and Android app with in-app top-up, add-destination, and usage alerts
- Live chat, WhatsApp, and email support, including real-time channels
- 31+ local currencies supported at checkout
- 63-language interface for non-English travelers
Cons
- Newer brand (launched August 2025) with shorter track record
- 186 countries, behind Airalo's 200+ catalogue
Airalo -- Widest Coverage Catalogue
Airalo's $4.50/GB starting rate runs above Argentina's own $2.10/GB comparison floor, though it still carries the highest Coverage score in the matrix at 4.9/5 across 200+ countries. Its Discover Global bundle, spanning 130 countries, suits a Buenos Aires stop on a wider South American itinerary.
Dimension scores, 0-5 on our rubric
Pros
- 200+ countries with the widest coverage breadth in the market
- Regional multi-country bundles (Asialink, Eurolink, Discover Global)
- Automatic in-app install with real-time data tracking and hourly runtime estimates
- Airmoney cashback rewards (5-10% depending on loyalty tier)
- Established brand since 2019 with proven reliability
Cons
- Per-GB pricing higher than budget alternatives
- Unlimited plans available in select markets only, not all 200+ destinations
- No live chat or WhatsApp channel: support runs on email and in-app messaging
Saily -- Best for Privacy
Saily prices Argentina at $3.99/GB with a bundled NordVPN connection at no extra cost, useful since VPN access stays unrestricted per enrichment data. Its 200-country footprint and 4.5/5 in our comparison matrix App score, behind HelloRoam's 5.0 and Airalo's 4.7, still run above Argentina's own $2.10/GB comparison floor, positioning it as a privacy-first pick rather than the price leader.
Dimension scores, 0-5 on our rubric
Pros
- Backed by NordVPN parent company Nord Security with proven privacy infrastructure
- Integrated VPN protection included on every plan at no extra cost
- Clean, privacy-focused app with VPN toggle inside the eSIM interface
- 200 countries with strong European coverage
- 30-day refund policy
Cons
- Email-only support with no live chat or WhatsApp for urgent help
- Fixed data plans only; no unlimited daily tier
- 200 countries, just behind Airalo's 200-plus
Holafly -- Best Unlimited Daily Rate
Holafly's $2.99/day unlimited rate undercuts Argentina's own $5.99 base per-day rate by roughly half, backed by a 4.65/5 on our 2026 rubric Support score behind HelloRoam's 5.0 and 24/7 chat availability, useful for a Buenos Aires stay where local peso pricing might otherwise shift between planning and arrival.
Dimension scores, 0-5 on our rubric
Pros
- Unlimited daily data from $2.99/day with no data caps
- 160+ countries covered including all major destinations
- Simple per-day pricing: know exactly what you pay before you leave
- 180-day refund policy on unused plans
- 24/7 chat support alongside email
Cons
- Speeds reduce after the daily fair use threshold on most plans
- Hotspot tethering limited to 1 GB/day on select destinations
- Not cost-effective for light data users (under 3 GB/trip)
- Fewer countries than Airalo
Nomad -- Best Budget Per-GB Rate
Nomad's $3.00/GB rate is the lowest fixed floor among the four outside providers, closer to Argentina's own $2.10/GB comparison floor than Airalo's $4.50/GB. Its usual Southeast Asia discount does not apply here, and its email-only support window is the thinnest of the five, a real factor for a Buenos Aires trip extending south into Patagonia's thin coverage.
Dimension scores, 0-5 on our rubric
Pros
- Competitive pricing starting from $3.00/GB in Southeast Asia
- Simple, fast checkout with no account required in many cases
- Lowest per-GB rates for Thailand, Vietnam, South Korea, and Japan
- Plans start at a low entry price for short trips
Cons
- Email-only support with no live chat, WhatsApp, or phone channel
- Basic app compared to Airalo and Saily
- 200 countries, behind only Airalo among the five providers
- Limited plan variety in some countries
From the matrix
HelloRoam — Top composite rating
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FAQ
Buenos Aires eSIM questions, answered
Who leads the Buenos Aires eSIM comparison?
Who leads the Buenos Aires eSIM comparison?
HelloRoam leads the 2026 composite at 4.64/5 in our comparison matrix. Airalo, Holafly, Saily, and Nomad follow on coverage breadth, daily unlimited, privacy, and per-GB pricing.
Which eSIM has the cheapest per-GB rate for Buenos Aires?
Which eSIM has the cheapest per-GB rate for Buenos Aires?
This comparison's own tracked floor for Argentina is $2.10/GB, set by the 20GB tier. Among the five eSIMs, Nomad's $3.00/GB comes closest, followed by HelloRoam at $3.50/GB and Saily at $3.99/GB, with Airalo's $4.50/GB running highest and Holafly's $2.99/day unlimited rate skipping per-GB math entirely.
Does Buenos Aires have 5G coverage?
Does Buenos Aires have 5G coverage?
Limited, but yes. Enrichment data confirms 5G in Argentina stays concentrated in Buenos Aires itself, tracked here through Movistar. Claro Argentina and Personal, listed separately in enrichment data, sit outside this comparison's tracked routing and run on 4G outside the capital.
Why do local SIM prices in Buenos Aires seem to change so often?
Why do local SIM prices in Buenos Aires seem to change so often?
Enrichment data flags Argentine peso instability as the cause: local carrier pricing set in pesos can shift noticeably in USD terms between booking a trip and landing in Buenos Aires. Any of the five eSIMs in this comparison price in fixed USD instead, avoiding that currency swing entirely, though a DNI or passport is still required for a local Argentine SIM.
Compare all 5 providers for Buenos Aires
Side-by-side scoring. Plans from $2.99/day to $4.50/GB. Verified June 2026.