Best eSIM for Ireland 2026: 5 Providers Priced
Ireland eSIM prices checked 27 Oct 2026: ONE eSIM is cheapest at 4 of 5 sizes from 1 to 20 GB, from $1.57 for 1 GB.
Short answer: ONE eSIM has the cheapest 1 GB eSIM for Ireland at $1.57 for 7 days; the next cheapest is Saily at $3.99. Prices checked 27 October 2026 across ONE eSIM, Airalo, Holafly, Saily and Nomad; the full table is below.
Ireland is Dublin's pubs and museums, the Wild Atlantic Way, the Ring of Kerry and the Cliffs of Moher, and most visitors drive a loop that leaves the cities within a day or two. Data matters for the hire car's navigation, for the weather that changes by the hour and for the pub and B&B bookings along the way. Irish SIMs are sold in supermarkets without ID, but an eSIM is working on the bus from Dublin airport. On 27 October 2026 we checked Ireland eSIM prices across ONE eSIM, Airalo, Holafly, Saily and Nomad, lining up the cheapest plan at or above each size so the comparison is like for like.
Quick answer: Ireland eSIM prices by size
- 1 GB: ONE eSIM at $1.57 (7 days); next cheapest is Saily at $3.99 (7 days).
- 3 GB: ONE eSIM at $4.13 (15 days); next cheapest is Airalo at $7.00 (3 days).
- 5 GB: ONE eSIM at $6.55 (30 days); next cheapest is Airalo at $10.00 (7 days).
- 10 GB: ONE eSIM at $11.77 (30 days); next cheapest is Airalo at $15.00 (15 days).
- 20 GB: Nomad is cheapest at $20.00 (30 days); ONE eSIM is $26.02 (30 days).
Ireland eSIM prices compared (1 GB to 20 GB)
| Data | ONE eSIM Our price | Airalo | Holafly | Saily | Nomad |
|---|---|---|---|---|---|
| 1 GB | $1.57 (7 days) Cheapest, saves $2.42 | $4.00 (3 days) | – | $3.99 (7 days) | $4.50 (7 days) |
| 3 GB | $4.13 (15 days) Cheapest, saves $2.87 | $7.00 (3 days) | – | $7.99 (30 days) | $9.00 (30 days) |
| 5 GB | $6.55 (30 days) Cheapest, saves $3.45 | $10.00 (7 days) | – | $10.99 (30 days) | $12.50 (30 days) |
| 10 GB | $11.77 (30 days) Cheapest, saves $3.23 | $15.00 (15 days) | – | $17.99 (30 days) | $16.00 (30 days) |
| 20 GB | $26.02 (30 days) | $25.00 (15 days) | – | $25.99 (30 days) | $20.00 (30 days) Cheapest |
Holafly sells only unlimited plans for Ireland, so it has no price in the GB rows; its 7-day plan is in the week table below.
A week of unlimited data in Ireland
| Provider | 7 days | What you get |
|---|---|---|
| ONE eSIM | $10.43 | 1 GB a day at full speed, then 512 Kbps until the next day (7 × $1.49) |
| Airalo | $27.00 | 3 GB a day at full speed, then 1 Mbps (fair use) |
| Holafly | $27.50 | No daily cap; fair use may slow very heavy use |
| Saily | $26.99 | 5 GB a day at full speed, then up to 1 Mbps |
| Nomad | $25.00 | 2 GB a day at full speed, then 1 Mbps |
For a week, ONE eSIM's 1 GB a day plan is the cheapest way to stay online all day at $10.43. The cheapest of the others is Nomad at $25.00, which gives more full-speed data a day; compare by how much you use a day, not by the word unlimited.
Which networks power Ireland eSIMs
In Ireland, ONE eSIM plans run on Eir, listed with 5G. Every plan names its network and generation before you pay, so you can pick the operator you want. Coverage follows each carrier's own build, so expect the strongest signal in the cities and along the main roads and rail lines, and check the plan's network if you are heading somewhere remote.
Which eSIM should you choose for Ireland?
- Short trip, light use (up to 3 GB): ONE eSIM's 3 GB plan at $4.13 (15 days), the cheapest at that size.
- Two weeks or more (5 to 10 GB): ONE eSIM's 10 GB plan at $11.77 (30 days), the cheapest at that size.
- Heavy use (20 GB): Nomad at $20.00 (30 days) is the cheapest at 20 GB.
- Streaming or video calls every day: compare the unlimited plans above by how much full-speed data each gives a day.
Getting your Ireland eSIM set up
- Confirm your phone supports eSIM and is carrier-unlocked before you buy.
- Install the eSIM over home or airport Wi-Fi before you fly; the QR code or install link needs a working connection to download.
- Land in Dublin or Shannon, switch on the eSIM line and enable data roaming, then check for a signal from Eir before you head for the taxi rank or the train.
Ireland eSIM FAQ
- Does an Ireland eSIM work in Northern Ireland? Only if the plan lists the United Kingdom. Belfast and the Giant's Causeway are in the UK; a UK and Ireland or a Europe plan covers both sides of the border without a change.
- Will the eSIM work on the Wild Atlantic Way and in Connemara? In the towns and along the main coast road, yes. Signal thins in the Connemara and Kerry hills and on the Aran Islands; download the map and the day's route before you leave the hotel.
- Can I keep my home number active alongside a Ireland eSIM? Yes. Most modern phones run two lines, so your home number stays available for calls and texts while the eSIM carries the data.
- Which networks does a Ireland eSIM connect to? ONE eSIM's plans use Eir 5G; the other providers in this comparison may use different local partners.
- How much data do I need for a week in Ireland? For maps, messaging and photos, 3 GB is enough for most people; add a bigger plan or the daily unlimited option if you stream or work on video calls.
How we check prices
We read each provider's public Ireland page on 27 October 2026 and took its cheapest plan at or above each size, in US dollars before any coupon, with the validity in brackets; ONE eSIM prices are our live list prices on the same day. Prices move, so we re-check every month and keep the date on the page and in the short answer. If a number is out of date, write to support@oneesim.app and we will correct it.
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