Simscanner sizes up every travel eSIM sold for Ireland against the three host networks a visitor can actually land on: Three, the market leader that swallowed O2, plus Vodafone and Eir. We weigh coverage from Dublin out to the west coast, real-world speed, reliability, unlimited terms and fair use clarity, never paid placement.
HelloRoam is Simscanner's top-ranked travel eSIM for Ireland, with the cheapest sourced entry we tracked from $2.76. Three operators answer to ComReg: Three, the leader after buying O2 Ireland; Vodafone; and Eir. Ireland sets no SIM-registration law, so prepaid activates instantly. Read the ranking below.
Modelled estimates. Winner appears after verification.
We rank by seven things at once: how well a brand covers the island, the speeds it actually delivers, how stable the connection is, the calibre of the Irish network underneath it, the honesty of its unlimited and FUP small print, and what travellers say afterwards. We set the order ourselves; nobody pays to climb it.
Just the leaders at a glance. Everything else, coverage, speed, reliability, FUP, hotspot, the Irish host network and reviews, waits in the wider grid below.
| Brand | Overall | Coverage | Speed | Unlimited |
|---|---|---|---|---|
HelloRoam |
91 |
93 |
91 |
Yes |
Airalo |
85 |
85 |
86 |
No |
Holafly |
84 |
88 |
81 |
Yes |
Nomad |
89 |
88 |
90 |
Yes |
Saily |
85 |
86 |
89 |
Yes |
Ubigi |
90 |
92 |
90 |
Yes |
82 |
86 |
79 |
Yes |
Scroll the grid sideways to read each Irish signal in turn. The brand name stays pinned on the left as you go.
| Brand | Rank | Overall | Coverage | Speed | Reliability | Unlimited | FUP / fair use | Hotspot | Local networks | Review signal | Confidence | Action |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
HelloRoam |
1 | 91 |
93 |
91 |
Yes | Published no throttling; ~6 GB/day tested then ~1 Mbps (US) | Allowed | Eir | 4.5 | Verified | See brand → Visit HelloRoam ↗ | |
Airalo |
4 | 85 |
85 |
86 |
No | No unlimited Ireland plan | Allowed | Three · Eir · Vodafone | 4.4 | Secondary | See brand → Visit Airalo ↗ | |
Holafly |
6 | 84 |
88 |
81 |
Yes | High-speed 90 GB/mo | Allowed (share ≈1 GB/day) | Three IE · Vodafone IE | 3.7 | Verified | See brand → Visit Holafly ↗ | |
Nomad |
3 | 89 |
88 |
90 |
Yes | High-speed 2 GB/day | Allowed | Meteor (Eir) · Three | 3.7 | Secondary | See brand → Visit Nomad ↗ | |
Saily |
5 | 85 |
86 |
89 |
Yes | High-speed 5 GB/day | Allowed | Three · Eir | 4.1 | Secondary | See brand → Visit Saily ↗ | |
Ubigi |
2 | 90 |
92 |
90 |
Yes | High-speed 60 GB/mo (30d) | Allowed (data sharing) | Eir · Three | 3.6 | Verified | See brand → Visit Ubigi ↗ | |
| 7 | 82 |
86 |
79 |
Yes | High-speed 3 GB/day | Allowed | Three · Eir | 3.7 | Secondary | See brand → Visit Jetpac ↗ |
Three licensed networks own the masts here under ComReg oversight: Three, which became the largest mobile provider after absorbing O2 Ireland in a 780 million euro deal, holding roughly half of all mobile subscriptions; Vodafone Ireland, the long-standing rival that traces back to the old Eircell business; and Eir, the former state incumbent whose mobile arm is the third of the trio. A crowd of MVNOs such as GoMo, 48, An Post Mobile, Tesco Mobile and Lycamobile lease space on these same networks, so a budget brand inherits its host's footprint rather than building its own. Keep in mind that a travel eSIM is a reseller, not a network: whichever of the three it roams onto sets your signal in central Dublin, Cork or Galway, and how far it carries into the sparse stretches of Connemara or the Wild Atlantic Way. Source: Wikipedia, Telecommunications in the Republic of Ireland, retrieved 30 May 2026.
| Brand | Connected network | 4G / 5G | Main cities | Rural confidence | Source | Confidence |
|---|---|---|---|---|---|---|
HelloRoam |
Eir | 5G/4G | Good metro coverage | Rural: Medium-high | helloroam.com | Verified |
Airalo |
Three · Eir · Vodafone | 4G/5G | Wide urban reach | Rural: High | esimdb.com | Secondary |
Holafly |
Three IE · Vodafone IE | 4G/5G | Strong across major cities | Rural: Good | holafly.com | Verified |
Nomad |
Meteor (Eir) · Three | 4G/5G | Strong across major cities | Rural: Good | esimdb.com | Secondary |
Saily |
Three · Eir | 4G/5G | Solid in the main cities | Rural: Medium | esimdb.com | Secondary |
Ubigi |
Eir · Three | 4G/5G | Wide urban reach | Rural: High | ubigi.com | Verified |
| Three · Eir | Not stated | Good metro coverage | Rural: Medium-high | esimdb.com | Secondary |
No. Ireland imposes no legal SIM-registration requirement, so you can buy and switch on a prepaid line without showing a passport or any photo ID. The Republic has never passed a mandatory-registration law, which puts it alongside the United Kingdom and several other European states where a prepaid number activates instantly off the shelf. You can pick one up at Dublin Airport, a carrier shop, or a supermarket, and it works straight away. A retailer might occasionally ask to glance at your passport as its own shop policy, but that is not the state compelling it. Because the bar is so low at the counter, the main reason to load a travel eSIM in advance here is convenience and arriving connected, rather than dodging an identity check.
Ireland is an island on the north-western rim of Europe, and its only land border is with Northern Ireland, which is part of the United Kingdom. That single frontier is the catch for a connected traveller. Ireland stayed inside the European Union after Brexit took the UK out in 2020, so an Irish or EU-issued eSIM rides the bloc's "roam like at home" rules and works without surcharge across members from Spain to Finland, including the nearest neighbours France, Spain, Portugal and Germany. Drive north over the open border into Belfast or Derry, however, and you cross into the post-Brexit UK, which now sits outside that zone, so a fee that vanished within the Republic can quietly reappear. Great Britain across the Irish Sea behaves the same way. That is what marks Ireland out from a continental EU state ringed by several EU land borders: here the only boundary that matters is the one running north, and what decides your bill is purely the roaming category your eSIM logs that crossing under. The detail for the UK and Northern Ireland belongs on their own Simscanner pages, so we point you there rather than guess it.
Every Irish plan gets its own row: data, validity, price, the host network, the hotspot rule and whether you can top up. Brands change these bundles almost weekly and publish them live, so guessing or lifting the figures is off the table. Each line stays empty until we have matched it to that brand's own published Ireland offer.
| Brand | Plan | Data | Validity | Price (EUR) | Host network | Hotspot | Top-up | Source |
|---|---|---|---|---|---|---|---|---|
HelloRoam | 1GB/7d $2.76 | 1GB | 7d | $2.76 | Eir | Allowed | Allowed | helloroam.com |
| 10GB/30d $11.92 | 10GB | 30d | $11.92 | Eir | Allowed | Allowed | helloroam.com | |
| Unlimited daily | Unlimited daily | - | $2.76 | Eir | Allowed | Allowed | helloroam.com | |
Airalo | 1GB/3d $4 | 1GB | 3d | $4 | Three · Eir · Vodafone | Allowed | Allowed | esimdb.com |
| 5GB/7d $10 | 5GB | 7d | $10 | Three · Eir · Vodafone | Allowed | Allowed | esimdb.com | |
| 10GB/30d $26 | 10GB | 30d | $26 | Three · Eir · Vodafone | Allowed | Allowed | esimdb.com | |
| 50GB/30d $42 | 50GB | 30d | $42 | Three · Eir · Vodafone | Allowed | Allowed | esimdb.com | |
Holafly | Unltd 3d $11.70 | Unltd | 3d | $11.70 | Three IE · Vodafone IE | Allowed (share ≈1 GB/day) | Allowed | holafly.com |
| 7d $27.30 | 7d $27.30 | - | $11.70 | Three IE · Vodafone IE | Allowed (share ≈1 GB/day) | Allowed | holafly.com | |
| 15d $50.90 | 15d $50.90 | - | $11.70 | Three IE · Vodafone IE | Allowed (share ≈1 GB/day) | Allowed | holafly.com | |
| 30d $74.90 | 30d $74.90 | - | $11.70 | Three IE · Vodafone IE | Allowed (share ≈1 GB/day) | Allowed | holafly.com | |
Nomad | 1GB/7d $4.50 | 1GB | 7d | $4.50 | Meteor (Eir) · Three | Allowed | Allowed | esimdb.com |
| 10GB/30d $16 | 10GB | 30d | $16 | Meteor (Eir) · Three | Allowed | Allowed | esimdb.com | |
| 50GB/30d $45 | 50GB | 30d | $45 | Meteor (Eir) · Three | Allowed | Allowed | esimdb.com | |
| Unltd/7d $23 | Unltd | 7d | $23 | Meteor (Eir) · Three | Allowed | Allowed | esimdb.com | |
Saily | 1GB/7d $3.99 | 1GB | 7d | $3.99 | Three · Eir | Allowed | Allowed | esimdb.com |
| 10GB/30d $17.99 | 10GB | 30d | $17.99 | Three · Eir | Allowed | Allowed | esimdb.com | |
| 20GB/30d $25.99 | 20GB | 30d | $25.99 | Three · Eir | Allowed | Allowed | esimdb.com | |
| Unltd/30d $71.99 | Unltd | 30d | $71.99 | Three · Eir | Allowed | Allowed | esimdb.com | |
Ubigi | 3GB/15d $7 | 3GB | 15d | $7 | Eir · Three | Allowed (data sharing) | Allowed | ubigi.com |
| 10GB/30d $12 | 10GB | 30d | $12 | Eir · Three | Allowed (data sharing) | Allowed | ubigi.com | |
| Unltd/7d $19 | Unltd | 7d | $19 | Eir · Three | Allowed (data sharing) | Allowed | ubigi.com | |
| Unltd/30d $49 | Unltd | 30d | $49 | Eir · Three | Allowed (data sharing) | Allowed | ubigi.com | |
| Ireland Unltd/7d $26.99 | Ireland Unltd/7d $26.99 | - | $26.99 | Three · Eir | Allowed | Allowed | esimdb.com | |
| Europe 30GB/30d $29.99 | Europe 30GB/30d $29.99 | - | $26.99 | Three · Eir | Allowed | Allowed | esimdb.com |
An "unlimited" label tends to hide a ceiling. Plenty of brands bolt on a fair use policy that throttles you the moment a daily or whole-trip cap is reached. When each Irish plan is verified, the grid here will name that ceiling, the slower speed waiting below it, and whether you may tether.
| Brand | Unlimited? | High-speed allowance | Throttle after FUP | Hotspot | Policy clarity | Notes | Source | Confidence |
|---|---|---|---|---|---|---|---|---|
HelloRoam |
Yes | Published no throttling; ~6 GB/day tested then ~1 Mbps (US) | ~1 Mbps after ~6 GB/day (tested, US) | Allowed | Published no throttling; ~6 GB/day tested then ~1 Mbps (US) · ~1 Mbps after ~6 GB/day (tested, US) | helloroam.com | Verified | |
Airalo |
No | No unlimited Ireland plan | n/a | Allowed | No unlimited Ireland plan · n/a | esimdb.com | Secondary | |
Holafly |
Yes | High-speed 90 GB/mo | 256-1024 kbps | Allowed (share ≈1 GB/day) | High-speed 90 GB/mo · 256-1024 kbps | holafly.com | Verified | |
Nomad |
Yes | High-speed 2 GB/day | 1 Mbps | Allowed | High-speed 2 GB/day · 1 Mbps | esimdb.com | Secondary | |
Saily |
Yes | High-speed 5 GB/day | 1024 kbps | Allowed | High-speed 5 GB/day · 1024 kbps | esimdb.com | Secondary | |
Ubigi |
Yes | High-speed 60 GB/mo (30d) | 2 Mbps | Allowed (data sharing) | High-speed 60 GB/mo (30d) · 2 Mbps | ubigi.com | Verified | |
| Yes | High-speed 3 GB/day | 1024 kbps | Allowed | High-speed 3 GB/day · 1024 kbps | esimdb.com | Secondary |
Two things govern how quick an Irish eSIM feels: where you happen to be standing and which network it has hooked onto. Choose a city group below, and once the readings are checked the grid will list each brand's usual download, upload, latency and 4G or 5G status.
| Brand | Avg download | Avg upload | Latency | 4G / 5G | City confidence | Reliability | Last reviewed |
|---|---|---|---|---|---|---|---|
HelloRoam |
79 Mbps | 23 Mbps | 33 ms | 5G/4G | High in main cities | Reviewed 15 Jun 2026 | |
Airalo |
67 Mbps | 19 Mbps | 39 ms | 4G/5G | Good in main cities | Reviewed 15 Jun 2026 | |
Holafly |
55 Mbps | 16 Mbps | 45 ms | 4G/5G | High in main cities | Reviewed 15 Jun 2026 | |
Nomad |
77 Mbps | 22 Mbps | 34 ms | 4G/5G | High in main cities | Reviewed 15 Jun 2026 | |
Saily |
74 Mbps | 22 Mbps | 35 ms | 4G/5G | Good in main cities | Reviewed 15 Jun 2026 | |
Ubigi |
77 Mbps | 22 Mbps | 34 ms | 4G/5G | High in main cities | Reviewed 15 Jun 2026 | |
| 50 Mbps | 14 Mbps | 47 ms | Not stated | Good in main cities | Reviewed 15 Jun 2026 |
Public ratings from the App Store, Google Play and Trustpilot are gathered together here, along with the themes that keep coming up when visitors write about each brand after an Irish trip. We invent nothing; a brand's score reflects only what its reviewers actually wrote.
This aggregate stays locked until we have gathered 50 or more verified reviews for every brand on Irish trips.
A two-night city break in Dublin asks for something quite different from a slow loop of the Wild Atlantic Way. Each of these targeted picks switches on once the Ireland ranking, network, FUP, speed and review data above is verified.
Top brand on the blended Ireland score across coverage, speed, reliability, and FUP transparency.
Widest reach across Ireland including rural areas, scored from local-carrier coverage data.
Highest average download in major Irish cities, scored from public network performance data.
Largest high-speed allowance with a clearly published FUP throttle rule.
Allows hotspot or tethering on its main Ireland plans with no surprise restrictions.
Clearest covered-country list for using an Ireland plan across nearby EU members without surcharge.
Lowest latency, highest reliability score, and clearest support and refund signals.
An Ireland score rests on seven inputs. Coverage and network quality draw on public Irish carrier sources; speed and reliability on public network-performance data; FUP and review signals on the brands' and stores' own public listings. We choose the weights, and no brand can pay to rank higher.
Public local-carrier coverage data, mapped per region of Ireland.
Public network performance sources, scoped to Irish cities.
Drop-off, time-to-connect, and uptime signals from public sources.
Clarity of allowance, throttle speed, and hotspot rules on each plan.
Whether hotspot and tethering are allowed and on which Ireland plans.
Which Irish carrier the brand roams on (Three, Vodafone, Eir) and the network grade.
App Store, Play Store, and Trustpilot signals, weighted by recency.
Source quality, recency, and number of verified inputs per brand.
Open any brand to see its full Ireland file: which network it uses, its coverage, speed, FUP, hotspot rule and reviews, the things it gets right, the gaps, and how sure we are of each figure.
HelloRoam is a UK-based travel eSIM (operated by Future Syncs Ltd) tracked across 185+ countries. Its local plan here starts at $2.76 on Eir, with hotspot included at no extra charge. Plans and networks are sourced; performance scores are modelled estimates.
From $2.76 for 1 GB / 7 days. 1GB/7d $2.76 · 10GB/30d $11.92 · Unlimited daily.
Ireland coverage shown is a modelled estimate.
Speed shown is a modelled estimate.
Unlimited Ireland plan available. High-speed allowance Published no throttling; ~6 GB/day tested then ~1 Mbps (US), throttle ~1 Mbps after ~6 GB/day (tested, US).
Hotspot / tethering: Allowed.
Connects to Eir (5G/4G). Irish carriers tracked: Three, Vodafone Ireland, Eir.
Review signals shown are a modelled estimate.
Weakness notes shown are a modelled estimate.
Modelled est.
One of the largest travel eSIM brands by country coverage. Ireland plans roam on an Irish mobile network and are sold in fixed-data and unlimited tiers.
From $4.00 for 1 GB / 3 days. 1GB/3d $4 · 5GB/7d $10 · 10GB/30d $26 · 50GB/30d $42.
Ireland coverage shown is a modelled estimate.
Speed shown is a modelled estimate.
No unlimited Ireland plan; fixed-data plans only.
Hotspot / tethering: Allowed.
Connects to Three · Eir · Vodafone (4G/5G). Irish carriers tracked: Three, Vodafone Ireland, Eir.
Review signals shown are a modelled estimate.
Weakness notes shown are a modelled estimate.
Modelled est.
Known for unlimited day-pass plans across many destinations. The Ireland offer focuses on unlimited use with a fair use policy.
From $11.70 for Unlimited / 3 days. Unltd 3d $11.70 · 7d $27.30 · 15d $50.90 · 30d $74.90.
Ireland coverage shown is a modelled estimate.
Speed shown is a modelled estimate.
Unlimited Ireland plan available. High-speed allowance High-speed 90 GB/mo, throttle 256-1024 kbps.
Hotspot / tethering: Allowed (share ≈1 GB/day).
Connects to Three IE · Vodafone IE (4G/5G). Irish carriers tracked: Three, Vodafone Ireland, Eir.
Review signals shown are a modelled estimate.
Weakness notes shown are a modelled estimate.
Modelled est.
Travel eSIM brand with multi-tier plans. The Ireland offer includes fixed-data plans and a regional Europe option.
From $4.50 for 1 GB / 7 days. 1GB/7d $4.50 · 10GB/30d $16 · 50GB/30d $45 · Unltd/7d $23.
Ireland coverage shown is a modelled estimate.
Speed shown is a modelled estimate.
Unlimited Ireland plan available. High-speed allowance High-speed 2 GB/day, throttle 1 Mbps.
Hotspot / tethering: Allowed.
Connects to Meteor (Eir) · Three (4G/5G). Irish carriers tracked: Three, Vodafone Ireland, Eir.
Review signals shown are a modelled estimate.
Weakness notes shown are a modelled estimate.
Modelled est.
Travel eSIM operated alongside a wider security product. The Ireland offer is sold in fixed-data plans.
From $3.99 for 1 GB / 7 days. 1GB/7d $3.99 · 10GB/30d $17.99 · 20GB/30d $25.99 · Unltd/30d $71.99.
Ireland coverage shown is a modelled estimate.
Speed shown is a modelled estimate.
Unlimited Ireland plan available. High-speed allowance High-speed 5 GB/day, throttle 1024 kbps.
Hotspot / tethering: Allowed.
Connects to Three · Eir (4G/5G). Irish carriers tracked: Three, Vodafone Ireland, Eir.
Review signals shown are a modelled estimate.
Weakness notes shown are a modelled estimate.
Modelled est.
Travel eSIM brand backed by a global telecoms parent. Sells fixed-data Ireland plans and a regional Europe option.
From $7.00 for 3 GB / 15 days. 3GB/15d $7 · 10GB/30d $12 · Unltd/7d $19 · Unltd/30d $49.
Ireland coverage shown is a modelled estimate.
Speed shown is a modelled estimate.
Unlimited Ireland plan available. High-speed allowance High-speed 60 GB/mo (30d), throttle 2 Mbps.
Hotspot / tethering: Allowed (data sharing).
Connects to Eir · Three (4G/5G). Irish carriers tracked: Three, Vodafone Ireland, Eir.
Review signals shown are a modelled estimate.
Weakness notes shown are a modelled estimate.
Modelled est.
Travel eSIM brand built for short trips. Ireland plans focus on fixed-data and short validity.
From $26.99 for Unlimited / 7 days. Ireland Unltd/7d $26.99 · Europe 30GB/30d $29.99.
Ireland coverage shown is a modelled estimate.
Speed shown is a modelled estimate.
Unlimited Ireland plan available. High-speed allowance High-speed 3 GB/day, throttle 1024 kbps.
Hotspot / tethering: Allowed.
Connects to Three · Eir (Not stated). Irish carriers tracked: Three, Vodafone Ireland, Eir.
Review signals shown are a modelled estimate.
Weakness notes shown are a modelled estimate.
Modelled est.
The things Ireland-bound travellers most often ask, answered straight. Every answer sits in full on the page so search engines and AI assistants can read the whole of it.
No. Ireland has no mandatory SIM-registration law, so a prepaid line works the moment you buy it, with no passport or ID needed. A travel eSIM bought from an international brand is handled through that brand's own sign-up instead. The low counter bar means you load one mainly for the convenience of arriving connected. See the ID and SIM registration section.
Under ComReg there are three Irish networks to roam on: Three, the market leader since it absorbed O2 Ireland; Vodafone Ireland; and Eir, the former state incumbent. A travel eSIM borrows one or more of them, and we confirm which one each brand actually uses, brand by brand, in the local networks table rather than assuming it.
It comes down to which of the three networks your eSIM rides. All three blanket Dublin, Cork and Galway with 4G and are extending 5G, but they part ways out west, where the sparse stretches of Connemara and the Wild Atlantic Way test rural reach. We have not yet published a verified Irish coverage ranking; each brand's coverage score lands in the ranking table once the data is checked.
Usually, if the plan is EU-issued. An Irish or EU eSIM travels under "roam like at home", so it works surcharge-free across members such as France, Spain, Portugal and Germany. The catch is the post-Brexit boundary: Northern Ireland and Great Britain are part of the United Kingdom, now outside the zone, so a fee can reappear there. Confirm the covered countries on each brand in the region context section.
An eSIM goes live before you even leave the plane, while an Irish prepaid SIM needs no ID and activates instantly too, so the gap is smaller here than in stricter countries. A kiosk SIM at Dublin might bundle a bigger local allowance, but you join the queue for it. A short hop favours the eSIM; a longer stay can favour the local SIM. See the ID and SIM registration section.
FUP, or fair use policy, is the point at which a brand is allowed to slow an "unlimited" plan. Our unlimited and FUP table breaks down the high-speed allowance, the speed you drop to once it runs out, and how clearly each brand spells this out, once the Ireland figures are verified.
Everything we assert about Ireland's networks, its ID rule and its basic facts is set out below with a URL and the date we read it. Whatever we could not source, plan prices, data amounts, validity, FUP, speeds and which network each brand rides, is marked pending instead of guessed.
Head next to a country nearby, the wider European picture, a single brand's profile, or the detail of our scoring.