The short verdict
Flysimio on NOS and Vodafone is a strong-value Portugal eSIM in 2026, competitive per gigabyte at the plan sizes most visitors buy — the dated price index below shows exactly where we come out ahead of Nomad, Airalo and Holafly and where we do not. NOS has the most extensive coverage in mainland Portugal, from Lisbon and Porto down to the Algarve coast. MEO (Altice Portugal) is a strong second, and both Madeira and the Azores are included in standard Portugal plans as autonomous regions. Summer (July–September) is peak season, so buy before you fly.
Flysimio Portugal eSIM
$1.43 from · instant QR · 7-day refund
Portugal eSIM price index — August 2026
Across 4 providers and 16 plans compared in August 2026, the cheapest Portugal eSIM data on a standard 3–50 GB plan works out at $1.02/GB (Flysimio, priced live). On the same measure the cheapest rival plan is Nomad at $0.90/GB — cheaper than our best equivalent plan, which costs 14% more per gigabyte.
| Provider | Plan | Price | Price per GB | Network | Best for | Price checked |
|---|---|---|---|---|---|---|
| Nomad | 50 GB / 30 days | $45.00 | $0.90/GB | MEO / Vodafone / NOS | Easy app | Aug 14, 2026 |
| Nomad | 20 GB / 30 days | $20.00 | $1.00/GB | MEO / Vodafone / NOS | Easy app | Aug 14, 2026 |
| Flysimio | 20 GB / 30 days | $20.50 | $1.02/GB | NOS / Vodafone | Live | |
| Flysimio | 50 GB / 30 days | $53.38 | $1.07/GB | NOS / Vodafone | Live | |
| Flysimio | 10 GB / 30 days | $10.70 | $1.07/GB | NOS / Vodafone | Live | |
| Flysimio | 5 GB / 30 days | $5.95 | $1.19/GB | NOS / Vodafone | Live | |
| Flysimio | 3 GB / 15 days | $3.75 | $1.25/GB | NOS / Vodafone | Live | |
| Flysimio | 1 GB / 7 days | $1.43 | $1.43/GB | NOS / Vodafone | Live | |
| Nomad | 10 GB / 30 days | $16.00 | $1.60/GB | MEO / Vodafone / NOS | Easy app | Aug 14, 2026 |
| Nomad | 5 GB / 30 days | $10.00 | $2.00/GB | MEO / Vodafone / NOS | Easy app | Aug 14, 2026 |
| Nomad | 1 GB / 7 days | $4.50 | $4.50/GB | MEO / Vodafone / NOS | Easy app | Aug 14, 2026 |
| Airalo | Unlimited (3 GB/day) / 7 days | $27.00 | — | NOS | Coverage & app | Aug 14, 2026 |
| Holafly | Unlimited / 7 days | $27.50 | — | MEO / NOS / Vodafone Portugal | Unlimited data | Aug 14, 2026 |
| Airalo | Unlimited (3 GB/day) / 30 days | $69.00 | — | NOS | Coverage & app | Aug 14, 2026 |
| Holafly | Unlimited / 30 days | $73.90 | — | MEO / NOS / Vodafone Portugal | Unlimited data | Aug 14, 2026 |
| Flysimio | Unlimited (2 GB/day) / 30 days | $75.90 | — | NOS / Vodafone | Live |
- Airalo · Unlimited (3 GB/day) / 7 days: Airalo bills this as "Unlimited": 3 GB per day at full speed, then throttled to about 1 Mbps. Airalo's Portugal store lists unlimited packages only.
- Holafly · Unlimited / 7 days: Unlimited with no daily high-speed cap; Holafly applies a fair-use policy for at most one day at a time.
- Airalo · Unlimited (3 GB/day) / 30 days: Airalo bills this as "Unlimited": 3 GB per day at full speed, then throttled to about 1 Mbps.
- Holafly · Unlimited / 30 days: Unlimited with no daily high-speed cap; Holafly applies a fair-use policy for at most one day at a time.
- Flysimio · Unlimited (2 GB/day) / 30 days: 2 GB per day at full speed, then 1 Mbps. Sold as 1–30-day passes; 30 days is priced here for comparison.
How this table is priced. Flysimio prices are read live from our carrier catalog every time this page loads, so the figure here is the figure at checkout. Competitor prices are the US-dollar price shown on each provider's own site, read on the date in the last column and linked to the page we read it from; promotional prices are marked alongside the list price. Price per GB is the plan price divided by its included data — unlimited passes have no per-GB figure and are ranked by total price instead. Full method: how we test, the eSIM Price Index and what an eSIM costs.
- Nomad — checked Aug 14, 2026 — www.nomadesim.com/portugal-eSIM
- Airalo — checked Aug 14, 2026 — www.airalo.com/portugal-esim
- Holafly — checked Aug 14, 2026 — esim.holafly.com/esim-portugal/
NOS vs MEO vs Vodafone Portugal
| Carrier | Coverage | Best for |
|---|---|---|
| NOS | Widest mainland coverage, strong Alentejo and interior | Any Portugal trip including rural areas |
| MEO (Altice Portugal) | Strong nationwide; good in Algarve and north | Lisbon, Porto, and Algarve beach stays |
| Vodafone Portugal | Good urban; weaker rural | Major city stays |
Coverage by destination
| Destination | Coverage | Notes |
|---|---|---|
| Lisbon | Excellent 4G/5G | All carriers; full city including Belém and Sintra |
| Porto | Excellent 4G/5G | Full coverage; Douro Valley covered along main roads |
| Algarve (Faro, Lagos, Albufeira) | Excellent 4G | Full coastal strip coverage |
| Sintra | Excellent 4G | Palace grounds and town covered |
| Douro Valley (wine country) | Good 4G | Main road corridors covered; remote terraces variable |
| Alentejo (Évora, Monsaraz) | Good 4G | NOS reaches most Alentejo villages |
| Madeira (Funchal) | Good 4G | City and coastal roads; Pico do Arieiro can drop to 3G |
| Azores (São Miguel) | Good 4G | Ponta Delgada and main roads covered; remote volcanic trails limited |
Installing your Portugal eSIM
- Purchase before you fly — install on home Wi-Fi.
- Open the Flysimio email for the QR code.
- iPhone: Settings → Cellular → Add eSIM → Use QR Code.
- Android: Settings → Network & Internet → SIMs → Add SIM.
- Scan the code. Installation under 30 seconds.
- Label the eSIM "Portugal" and set as data line.
- Disable Data Roaming on your home carrier SIM.
- Your phone connects to NOS on landing at Lisbon (LIS), Porto (OPO), Faro (FAO), Funchal (FNC), or Ponta Delgada (PDL).
Frequently asked questions
What is the best eSIM for Portugal?
Flysimio on NOS and Vodafone is the value pick for a fixed-data Portugal eSIM in 2026, and was cheaper than Nomad at 5 GB when we checked in August 2026 — though Nomad undercuts us per gigabyte on larger plans. Airalo and Holafly both sell unlimited-only passes for Portugal, so there is no equivalent fixed Airalo plan to compare against. NOS has the widest mainland coverage including the Alentejo interior.
Does a Portugal eSIM cover Madeira?
Yes. Madeira is an autonomous region of Portugal. A standard Portugal eSIM covers Madeira with no additional cost or setup. Coverage in Funchal and along coastal roads is good; higher altitude levada walks may have intermittent signal.
Does a Portugal eSIM cover the Azores?
Yes. The Azores are an autonomous region of Portugal. A Portugal eSIM covers all nine Azorean islands. Coverage is good in Ponta Delgada (São Miguel) and main towns. Remote volcanic calderas and walking trails may have limited signal.
Is there eSIM coverage in the Douro Valley?
Yes along the main N222 road and Douro river corridor. Remote vineyard terraces and side valleys can have patchy 4G. For wine country driving, download offline maps as a backup.
Is a Portugal eSIM needed if I already have an EU plan?
If your current eSIM covers the EU (many Europe regional plans do), it will work in Portugal — Portugal is an EU member state. Check your current plan's country list before buying a separate Portugal eSIM.
When is the best time to buy a Portugal eSIM?
Before you fly — eSIM installation requires Wi-Fi and is much easier at home than in a Portuguese airport. Portugal is busiest in July and August; buy your eSIM a few days before departure to avoid any last-minute issues.
Maya Okafor
Senior Travel Connectivity Editor
Maya has tested eSIMs across 40+ countries over five years of full-time travel — from Tokyo subways to Patagonian backroads. She runs Flysimio’s hands-on network and speed testing.