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.
The comparison
eSIM providers compared for Buenos Aires
All 5 providers ranked by weighted composite score. Color-coded by value.
| Provider | Rating | From / GB |
|---|---|---|
 HelloRoamHighest score | 4.3 / 5 | from $3.50/GB |
 AiraloTop composite rating | 4.5 / 5 | $4.50/GB |
 HolaflyStrongest unlimited tier | 4.3 / 5 | $2.99/day |
 SailyLeading privacy integration | 4.2 / 5 | $3.99/GB |
 NomadMost competitive per-GB rates | 4.2 / 5 | $3.00/GB |
Prices verified June 2026. Equal-weight score: Coverage Breadth 20%, Pricing Tiers 20%, Speed Consistency 20%, App Features 20%, Support Channels 20%.
Feature matrix
Spec-by-spec breakdown for Buenos Aires
Every measurable dimension compared side by side.
| Feature | HelloRoam | Airalo | Holafly | Saily | Nomad |
|---|---|---|---|---|---|
| Overall Rating | 4.3/5 | 4.5/5 | 4.3/5 | 4.2/5 | 4.2/5 |
| Countries | 186+ | 200+ | 178+ | 150+ | 112+ |
| Starting Price | from $3.50/GB | $4.50/GB | $2.99/day | $3.99/GB | $3.00/GB |
| Per-GB Floor | $3.50 | $4.50 | $2.99/day | $3.99 | $3.00 |
| Founded | 2025 | 2019 | 2017 | 2023 | 2020 |
| Headquarters | United Kingdom | Singapore | Murcia, Spain | Vilnius, Lithuania | Santa Clara, CA |
| Support | Email + in-app chat | 24/7 chat + email | Email only | Email only | |
| Guarantee | Refund policy | 14-day refund | 6-month refund | 30-day refund | 30-day refund |
| Coverage Score25% weight | 4.5/5 | 4.9/5 | 4.3/5 | 4.0/5 | 3.9/5 |
| Pricing Score25% weight | 4.4/5 | 4.1/5 | 4.5/5 | 4.0/5 | 4.8/5 |
| Speed Score20% weight | 4.3/5 | 4.4/5 | 4.2/5 | 4.4/5 | 4.3/5 |
| App Score15% weight | 4.2/5 | 4.7/5 | 4.1/5 | 4.5/5 | 3.9/5 |
| Support Score15% weight | 4.1/5 | 4.2/5 | 4.7/5 | 4.1/5 | 3.9/5 |
| Weighted Composite | 4.30/5 | 4.45/5 | 4.35/5 | 4.20/5 | 4.15/5 |
Score breakdown
Provider scores for Buenos Aires
Weighted composite score across 5 dimensions.
Methodology
How we score eSIM providers
Five dimensions, weighted by impact on traveler experience.
Country count, carrier partnerships, regional bundle availability
Per-GB floor, plan tier spread, value at common data amounts
Carrier routing quality, LTE/5G availability, median download speeds
Store ratings, installation flow, data tracking, interface quality
Channel availability, response time, refund policy
All scores are editorial assessments based on verified data. Pricing checked weekly. See our full scoring methodology for details.
HelloRoam -- Best Coverage + Value
HelloRoam scores 8.6/10 overall and prices 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.
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
- 31+ local currencies supported at checkout
- 63-language interface for non-English travelers
Cons
- Email-only support with 12-24 hour response times
- Newer brand (launched August 2025) with shorter track record
- App store ratings still building compared to Airalo
Airalo -- Best Overall Coverage
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.
Pros
- 200+ countries with the widest coverage breadth in the market
- Regional multi-country bundles (Asialink, Eurolink, Discover Global)
- Highest-rated app (4.8/5 iOS, 4.6/5 Android) 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
- Customer support slower than premium providers (4-6 hour email response)
Holafly -- Best Unlimited Data
Holafly's $2.99/day unlimited rate undercuts Argentina's own $5.99 base per-day rate by roughly half, backed by the matrix's highest Support score at 4.65/5 and 24/7 chat availability, useful for a Buenos Aires stay where local peso pricing might otherwise shift between planning and arrival.
Pros
- Unlimited daily data from $2.99/day with no data caps
- 178+ countries covered including all major destinations
- Simple per-day pricing: know exactly what you pay before you leave
- 6-month refund policy on unused plans
- 24/7 chat support with fast response times
Cons
- Speeds reduce to 256 Kbps-1 Mbps after 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
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 150-country footprint and 4.5/5 App score, second only to 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.
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
- 150 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
- 150 countries, a narrower footprint than Airalo
- 12-24 hour support response times
Nomad -- Best Budget Option
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 24-48 hour email-only support window is the slowest of the five, a real factor for a Buenos Aires trip extending south into Patagonia's thin coverage.
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 24-48 hour response times
- Basic app compared to Airalo and Saily
- 112 countries, the narrowest footprint among the five providers
- Limited plan variety in some countries
FAQ
Frequently asked questions about eSIMs for Buenos Aires
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 at an average download speed of 25 Mbps nationally. 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.