The short verdict
For Ireland, Flysimio runs on Eir — strong national coverage across Dublin, Cork, Galway, and the main tourist routes — and was the best value of the providers we track in August 2026 (Airalo uses the same networks at close to double). The cities have full 5G. One honest note for the remote west: Vodafone Ireland has the deepest reach into the far corners of the Wild Atlantic Way — Connemara, the Dingle Peninsula, the remotest Ring of Kerry stretches — so it's worth knowing if those scenic drives are central to your trip. And an important routing note: Northern Ireland (Belfast, the Giant's Causeway) runs on UK networks, not Irish ones — a Republic-only eSIM won't connect there, so choose a UK or Europe plan if you're crossing the border.
Flysimio Ireland eSIM
$1.43 from · instant QR · 7-day refund
Ireland eSIM price index — August 2026
Across 4 providers and 16 plans compared in August 2026, the cheapest Ireland eSIM data on a standard 3–50 GB plan works out at $1.07/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 19% more per gigabyte.
| Provider | Plan | Price | Price per GB | Network | Best for | Price checked |
|---|---|---|---|---|---|---|
| Nomad | 50 GB / 30 days | $45.00 | $0.90/GB | Eir / Three | Easy app | Aug 14, 2026 |
| Nomad | 20 GB / 30 days | $20.00 | $1.00/GB | Eir / Three | Easy app | Aug 14, 2026 |
| Flysimio | 10 GB / 30 days | $10.70 | $1.07/GB | Eir | Live | |
| Flysimio | 50 GB / 180 days | $55.00 | $1.10/GB | Eir | Live | |
| Flysimio | 20 GB / 30 days | $23.65 | $1.18/GB | Eir | Live | |
| Flysimio | 5 GB / 30 days | $5.95 | $1.19/GB | Eir | Live | |
| Flysimio | 3 GB / 15 days | $3.75 | $1.25/GB | Eir | Live | |
| Flysimio | 1 GB / 7 days | $1.43 | $1.43/GB | Eir | Live | |
| Nomad | 10 GB / 30 days | $16.00 | $1.60/GB | Eir / Three | Easy app | Aug 14, 2026 |
| Nomad | 5 GB / 30 days | $12.50 | $2.50/GB | Eir / Three | Easy app | Aug 14, 2026 |
| Nomad | 1 GB / 7 days | $4.50 | $4.50/GB | Eir / Three | Easy app | Aug 14, 2026 |
| Airalo | Unlimited (3 GB/day) / 7 days | $27.00 | — | — | Coverage & app | Aug 14, 2026 |
| Holafly | Unlimited / 7 days | $27.50 | — | Three Ireland / Vodafone Ireland | Unlimited data | Aug 14, 2026 |
| Airalo | Unlimited (3 GB/day) / 30 days | $71.00 | — | — | Coverage & app | Aug 14, 2026 |
| Holafly | Unlimited / 30 days | $73.90 | — | Three Ireland / Vodafone Ireland | Unlimited data | Aug 14, 2026 |
| Flysimio | Unlimited (2 GB/day) / 30 days | $75.90 | — | Eir | 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 Ireland store lists unlimited packages only, and does not name its local network.
- 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/ireland-eSIM
- Airalo — checked Aug 14, 2026 — www.airalo.com/ireland-esim
- Holafly — checked Aug 14, 2026 — esim.holafly.com/esim-ireland/
Vodafone Ireland vs Three vs Eir
| Carrier | Coverage | Best for |
|---|---|---|
| Vodafone IE | Best overall, strongest rural west | Ring of Kerry, Connemara, Wild Atlantic Way drives |
| Three IE | Strong in cities and towns | Dublin, Cork, Galway city stays |
| Eir | Good national coverage | Mixed city and countryside trips |
Coverage across Ireland's top destinations
| Destination | Coverage | Notes |
|---|---|---|
| Dublin | 5G on all carriers | Excellent coverage across the city and airport (DUB) |
| Galway | 4G/5G on Vodafone and Three | Strong in the city and along Galway Bay |
| Cork | 5G on Vodafone and Three | Strong across the city and harbour |
| Ring of Kerry | 4G on Vodafone | Good in Killarney and towns; patchy on remote coastal stretches |
| Cliffs of Moher | 4G on Vodafone | Coverage at the visitor centre and cliff-top paths |
| Connemara | 4G on Vodafone | Vodafone is the most reliable in this remote region |
| Dingle Peninsula | 4G on Vodafone | Good in Dingle town; thin on Slea Head Drive |
| Belfast (Northern Ireland) | UK networks | Requires a UK or Europe plan — not covered by a Republic-only eSIM |
Signal on the Wild Atlantic Way
The Wild Atlantic Way is the trip most people come to Ireland for — and its remotest stretches are where every network thins out. ComReg's official outdoor coverage map shows fringe-to-no signal on all operators — Vodafone, Three, and Eir alike — along Slea Head on the Dingle Peninsula, the western Ring of Kerry, and parts of Connemara. It is not carrier-specific, and no eSIM changes it. Download offline maps before these drives rather than relying on live navigation.
Installing your Ireland eSIM
- Buy 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 QR code. Installation takes under 30 seconds.
- Label it "Ireland" and set it as your data line.
- Turn off Data Roaming on your home SIM only.
- Your phone connects to Vodafone Ireland when you land at Dublin (DUB), Cork (ORK), or Shannon (SNN).
Frequently asked questions
What is the best eSIM for Ireland?
Flysimio was the cheapest Ireland eSIM at 5 GB of the four providers we track when we checked in August 2026. Note that our Irish plans route through Eir, not Vodafone Ireland — Vodafone has the widest reach into the rural west coast, so pick on carrier rather than price if the Ring of Kerry or Connemara is central to your trip. Airalo and Holafly both sell unlimited-only passes for Ireland, so the fixed-data comparison here is against Nomad.
Does an Ireland eSIM cover Northern Ireland?
No. Northern Ireland (Belfast, the Giant's Causeway) uses UK mobile networks. If your trip crosses the border, choose a Europe plan or a combined UK + Ireland plan so you stay connected in both.
Does an eSIM work on the Ring of Kerry and Wild Atlantic Way?
Yes, mostly. Vodafone Ireland has the best rural coverage for these scenic drives. You will have 4G in towns and at major viewpoints, with occasional gaps on the most remote coastal stretches — download offline maps to be safe.
Is there coverage at the Cliffs of Moher?
Yes. The Cliffs of Moher visitor centre and cliff-top walking paths have 4G on Vodafone Ireland and Three. Signal is reliable for photos, maps, and check-ins.
Do I need an Irish SIM card or can I use an eSIM?
An eSIM is the better choice for most visitors — cheaper than airport kiosks, installed before you land, and your home number stays active. A physical SIM is only needed if your phone does not support eSIM.
Sources & further reading
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.