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 October 2026 (Airalo uses the same networks at close to double). The cities have full 5G. 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 — and our 31-day Europe plans (10, 20, or 50 GB) connect to Vodafone, Three, and Eir in Ireland, so pick one of those 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
Pick the plan for your trip · instant QR · 7-day refund
Flysimio Ireland eSIM plans
For a one- to two-week trip, the 5 GB / 30-day plan at $5.95 covers maps, messaging and social for Ireland. Every plan includes hotspot. Full live range (prices update hourly):
| Data | Validity | Price | Per GB |
|---|---|---|---|
| 1 GBBuy$1.43 | 7 days | $1.43 | $1.43/GB |
| 3 GBBuy$3.75 | 15 days | $3.75 | $1.25/GB |
| 5 GBOur pickBuy$5.95 | 30 days | $5.95 | $1.19/GB |
| 10 GBBuy$10.70 | 30 days | $10.70 | $1.07/GB |
| 20 GBBuy$23.65 | 30 days | $23.65 | $1.18/GB |
| 50 GBBuy$55.00 | 180 days | $55.00 | $1.10/GB |
Every plan: instant QR delivery, no physical SIM, and a 7-day money-back guarantee.
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.
Ireland eSIM vs a local SIM card
Three, Vodafone and Eir sell prepaid SIMs at Dublin airport and in shops, and they are good value for long stays. A travel eSIM is bought online and installed before you fly, connects to Eir when you land, and leaves your home SIM in the phone for calls and texts. The eSIM is data-only, so there is no local number. Phone settings (data roaming, keeping your number) are covered step by step in how to use an eSIM abroad.
Visiting Northern Ireland or Britain too? Every tier of the Europe eSIM covers the Republic of Ireland and the UK on one plan, along with the rest of Europe.
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
Can I use my US phone in Ireland?
Yes, if it is unlocked and supports eSIM. Install the Ireland eSIM before you fly for data, and keep your US line on for calls and texts with data roaming off, which avoids a daily carrier roaming fee.
What is the best SIM card for tourists in Ireland?
For most visits, a travel eSIM: nothing to buy on arrival and it runs on Eir. If you are also visiting Northern Ireland, the Europe eSIM covers both sides of the border.
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 October 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.
Flysimio Ireland eSIM
$1.43 from · instant QR · 7-day refund
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.