Vika LakiYou are flying from New York to Dublin for ten days. Your carrier’s day pass costs $12 for each day you use the phone. That is $120 before you buy a coffee. Then you see eSIM plans that start near $3, and one reference list shows $1.
An eSIM is a digital SIM, so you can stay connected without a counter queue at Dublin Airport. The trouble starts after that. Most providers do not say which operator carries your signal. Reviews disagree on Northern Ireland. And a data-only eSIM will not take a call from your rental car company.
The guide below covers who needs an eSIM and what each provider sells. It names the Irish network behind each plan and shows what works across the border. It also covers calls, west coast coverage and setup before you fly.
Do you need an eSIM for Ireland?
You need one if you do not want to pay a day pass or buy a local SIM. If your home plan already includes Ireland with no daily fee, you may not need one. Check your plan first.
Can you use your US phone plan in Ireland?
Yes, with a day pass. AT&T’s own page lists International Day Pass at $12 per day for one line. Each extra line costs $6 on the same day. Ireland is included, and you pay only on days you use the phone. A third-party comparison lists Verizon TravelPass at $12 per day. The same source says T-Mobile includes slow roaming and sells faster passes. Confirm each price on your carrier’s page.
A day pass is simple, but it adds up on long trips. Read how to avoid roaming charges for more options.
eSIM vs roaming day pass vs local SIM: which is better?
A roaming day pass suits a quick weekend or a work trip where convenience matters more than cost. A local SIM often gives the most data for the money on a long stay. It takes more effort to set up.
| Option | Typical cost | Setup | Number and calls | Northern Ireland | Best for |
|---|---|---|---|---|---|
| Travel eSIM (data-only eSIM) | Yesim fixed data plans: $3.00 (1 GB) to $33.60 (30 GB), 30 days | Online, before the flight | No, data only on most plans | Depends on the plan | Maps, rideshare, messaging |
| Roaming day pass | $12 per day on AT&T. Verify others | Add to your plan | Your own number, calls and texts | Included where the carrier says so | Short trips, calls on your own number |
| Local tourist SIM card (prepaid SIM) or operator eSIM | Not verified here | In Ireland, after landing | Yes, a local number | Republic only, unless the plan says otherwise | Calls, long stays |
| eSIM with a number | Varies by provider | Online | Yes, with limits | Depends on the plan | Calls without a local SIM |
What is the best eSIM for Ireland? Quick picks
What is the best eSIM for Ireland? It depends on your route, your data use and if you need to call. What are the best eSIM options for Ireland on a week of driving? They differ from a month of remote work. Looking for the best eSIM card for Ireland? Start with the network and the border.
- Cheapest short trip: a reference list shows Jetpac at 1 GB for 4 days at $1.00. Yesim’s smallest plan is 1 GB for 30 days at $3.00.
- Best for 30 days and big volumes: a reference list shows Nomad at 20 GB for $20.00. Yesim lists 30 GB for $33.60.
- Lowest unlimited price per day: a reference list shows Saily at 30 days for $64.79, or $2.16 per day.
- Republic and Northern Ireland together: a regional Europe and UK plan, such as Yesim’s 33-country plan. Check that Northern Ireland is listed.
- Calls and a number: an eSIM with a number, or a local operator plan. Saily lists a US number add-on, and Airalo lists voice on its Discover+ plan.
What plans does each eSIM provider offer for Ireland?
Each provider below gets a table. These are the best eSIM providers Ireland travelers compare most. Yesim’s figures come from its plan page on October 23, 2026. For the rest, the figures come from a third-party review published in 2026. Their own pages could not be opened for this check. Confirm every price at checkout.
What are Yesim’s Ireland eSIM plans?
Yesim sells five fixed data plans for Ireland, all valid for 30 days. Its unlimited plans are priced per day, and longer plans cost less per day.
| Plan | Data | Validity | Price | Price per GB |
|---|---|---|---|---|
| Fixed data plan | 1 GB | 30 days | $3.00 | $3.00 |
| Fixed data plan | 5 GB | 30 days | $11.52 | $2.30 |
| Fixed data plan | 10 GB | 30 days | $19.20 | $1.92 |
| Fixed data plan | 20 GB | 30 days | $26.40 | $1.32 |
| Fixed data plan | 30 GB | 30 days | $33.60 | $1.12 |
| Unlimited plan | Unlimited | You choose the days | From $4.20 per day | n/a |
Validity starts when the eSIM connects to a compatible network, and you can activate within 180 days of purchase. The plan is data-only. Top-up is available, hotspot depends on the operator and no ID check is needed. Yesim switches to the strongest signal. Plans are on eSIM for Ireland.
Yesim tip: if your route includes Belfast, compare the Ireland plan with the Europe and UK plan before you buy.
What are Airalo’s Ireland eSIM plans?
Airalo sells local Ireland plans and regional and global plans. Three, Eir and Vodafone as its Irish networks, with 5G and LTE.
| Plan | Data | Validity | Price | Price per GB |
|---|---|---|---|---|
| Ireland | 1 GB | 7 days | $4.50 | $4.50 |
| Ireland | 2 GB | 15 days | $6.50 | $3.25 |
| Ireland | 3 GB | 30 days | $7.50 | $2.50 |
| Ireland | 5 GB | 30 days | $11.00 | $2.20 |
| Ireland | 10 GB | 30 days | $19.00 | $1.90 |
| Ireland | 20 GB | 30 days | $28.00 | $1.40 |
| Ireland unlimited | Unlimited | 10 days | $35.00 | $3.50 per day |
Calls and texts are only on the Discover+ global plan. Check the plan terms for voice.
What are Saily’s Ireland eSIM plans?
Saily offers local plans from 1 GB to unlimited.
| Plan | Data | Validity | Price | Price per GB |
|---|---|---|---|---|
| Ireland | 1 GB | 7 days | $3.59 | $3.59 |
| Ireland | 3 GB | 30 days | $7.19 | $2.40 |
| Ireland | 5 GB | 30 days | $9.89 | $1.98 |
| Ireland | 10 GB | 30 days | $16.19 | $1.62 |
| Ireland | 20 GB | 30 days | $23.39 | $1.17 |
| Ireland unlimited | Unlimited | 10 days | $31.49 | $3.15 per day |
| Ireland unlimited | Unlimited | 15 days | $44.09 | $2.94 per day |
| Ireland unlimited | Unlimited | 20 days | $53.99 | $2.70 per day |
| Ireland unlimited | Unlimited | 25 days | $59.39 | $2.38 per day |
| Ireland unlimited | Unlimited | 30 days | $64.79 | $2.16 per day |
What are Nomad’s Ireland eSIM plans?
Nomad sells fixed plans only. Three and Meteor are its networks and a free 1 GB trial plan for 3 days.
| Plan | Data | Validity | Price | Price per GB |
|---|---|---|---|---|
| Ireland | 1 GB | 7 days | $4.50 | $4.50 |
| Ireland | 3 GB | 30 days | $9.00 | $3.00 |
| Ireland | 5 GB | 30 days | $12.50 | $2.50 |
| Ireland | 10 GB | 30 days | $16.00 | $1.60 |
| Ireland | 20 GB | 30 days | $20.00 | $1.00 |
| Ireland | 50 GB | 30 days | $45.00 | $0.90 |
What are Jetpac’s Ireland eSIM plans?
Jetpac has the lowest entry price in the review. Three, Eir and Vodafone are its networks, data only, and free lounge access when a flight is delayed.
| Plan | Data | Validity | Price | Price per GB |
|---|---|---|---|---|
| Ireland | 1 GB | 4 days | $1.00 | $1.00 |
| Ireland | 3 GB | 7 days | $9.99 | $3.33 |
| Ireland | 5 GB | 30 days | $14.00 | $2.80 |
| Ireland | 10 GB | 30 days | $16.99 | $1.70 |
| Ireland | 15 GB | 30 days | $19.99 | $1.33 |
| Ireland | 30 GB | 30 days | $29.99 | $1.00 |
| Ireland | 40 GB | 30 days | $34.99 | $0.87 |
| Ireland unlimited | Unlimited | 7 days | $24.99 | $3.57 per day |
| Ireland unlimited | Unlimited | 10 days | $31.99 | $3.20 per day |
What are Holafly’s Ireland eSIM plans?
Holafly sells unlimited plans only. Eir, Three, O2 and Vodafone are its networks.
| Plan | Data | Validity | Price | Price per day |
|---|---|---|---|---|
| Unlimited | Unlimited | 1 day | $3.90 | $3.90 |
| Unlimited | Unlimited | 7 days | $27.30 | $3.90 |
| Unlimited | Unlimited | 15 days | $50.90 | $3.39 |
| Unlimited | Unlimited | 30 days | $74.90 | $2.50 |
| Unlimited | Unlimited | 60 days | $106.90 | $1.78 |
| Unlimited | Unlimited | 90 days | $139.90 | $1.55 |
What are Roamless’s Ireland eSIM plans?
Roamless sells 30-day plans and pay-as-you-go top-ups. The review lists Eir and Three as networks and in-app calling.
| Plan | Data | Validity | Price | Price per GB |
|---|---|---|---|---|
| Ireland | 1 GB | 30 days | $3.95 | $3.95 |
| Ireland | 2 GB | 30 days | $5.95 | $2.98 |
| Ireland | 3 GB | 30 days | $7.45 | $2.48 |
| Ireland | 5 GB | 30 days | $10.95 | $2.19 |
| Ireland | 10 GB | 30 days | $17.45 | $1.75 |
| Ireland | 20 GB | 30 days | $24.95 | $1.25 |
The review shows a free 500 MB plan, and notes that the largest plan is 20 GB.
How do the Ireland eSIM plans compare side by side?
We lined up the eSIM plans sold for Ireland and worked out the price per GB for each one. That is the plan price divided by its data allowance. It puts a 1 GB plan and a 20 GB plan on the same scale. It also shows how fast small plans usually lose value.
Price per GB is only the start. A cheap plan that expires after a week or blocks hotspot can cost you more in practice. So we also checked validity and network access, plus hotspot rules, for every provider.
Read also: Mobile internet in the UK.
Which plans are cheapest by provider?
Cheapest per GB and cheapest overall are different questions, so we answered both. For each provider, we looked at the entry plan and the best-value plan. We also looked at what you give up to get the lower price.
| Provider | Plan type | Data options | Validity | Network declared | 5G | Hotspot | Number or calls | Price from |
|---|---|---|---|---|---|---|---|---|
| Yesim | Fixed and unlimited | 1 to 30 GB, unlimited | 30 days, or per day | Three, Eir, Vodafone | Yes | Yes | Data only. Virtual numbers are separate | $3.00 |
| Airalo | Fixed and unlimited | 1 to 20 GB, unlimited | 7 to 30 days | Three, Eir, Vodafone | Yes | Yes | Discover+ only (review) | $4.50 |
| Saily | Fixed and unlimited | 1 to 20 GB, unlimited | 7 to 30 days | Three, Eir, Vodafone | Yes | Yes | US number add-on | $3.59 |
| Nomad | Fixed | 1 to 50 GB | 7 to 30 days | Three, Meteor | Yes | Yes | Data only | $4.50 |
| Jetpac | Fixed and unlimited | 1 to 40 GB, unlimited | 4 to 30 days | Three, Eir, Vodafone | Yes | Yes | Data only | $1.00 |
| Ubigi | Fixed and unlimited | 1 to 40 GB, unlimited | 1 to 30 days | Three, Eir, Vodafone | Yes | Yes | Data only | $3.90 |
| Holafly | Unlimited | Unlimited | 1 to 90 days | Eir, Three, O2, Vodafone | Yes | Yes | Data only | $3.90 |
| Roamless | Fixed | 1 to 20 GB | 30 days | Eir, Three | Yes | Yes | In-app calls, paid | $3.95 |
At 10 GB, Saily, Nomad and Jetpac list lower prices than Yesim’s $19.20. At 20 GB, Nomad lists $20.00 against Yesim’s $26.40. In return, Yesim lists an app, top-up and 24/7 support. It states a 5-minute reply and a refund guarantee under its policy. Virtual numbers are separate.
See Yesim vs Airalo, Yesim vs Saily and Yesim vs Holafly.
Which Irish network does each eSIM use?
Ireland has three mobile operators: Three, Eir and Vodafone. International eSIMs use one or more of them. The provider names the network on the plan page, or it does not.
| Provider | Network declared by the provider | Disclosed before purchase | Note |
|---|---|---|---|
| Yesim | Three, Eir, Vodafone | Yes | Ask support if your route includes remote areas |
| Airalo | Three, Eir, Vodafone | Yes | Ask support if your route includes remote areas |
| Saily | Three, Eir, Vodafone | Yes | Ask support if your route includes remote areas |
| Nomad | Three, Meteor | Yes | Ask support if your route includes remote areas |
| Jetpac | Three, Eir, Vodafone | Yes | Ask support if your route includes remote areas |
| Ubigi | Three, Eir, Vodafone | Yes | Ask support if your route includes remote areas |
| Holafly | Eir, Three, O2, Vodafone | Yes | Ask support if your route includes remote areas |
| Roamless | Eir, Three | Yes | Ask support if your route includes remote areas |
What is the best unlimited eSIM for Ireland?
An unlimited eSIM is rarely unlimited at full speed. Most providers give a daily high-speed allowance, then slow the connection until the cycle resets.
| Provider | Price per day | High-speed data per day | Speed after the limit | Hotspot |
|---|---|---|---|---|
| Yesim | From $4.20 for 1 day. Longer plans cost less per day | 5 GB | May be limited under the operator’s fair usage policy | Yes |
| Airalo | $3.50 (10 days) | 5 GB | May be limited under the operator’s fair usage policy | Yes |
| Saily | $2.16 to $3.15 (10 to 30 days) | 5 GB | May be limited under the operator’s fair usage policy | Yes |
| Jetpac | $3.20 to $3.57 (7 to 10 days) | 5 GB | May be limited under the operator’s fair usage policy | Yes |
| Holafly | $1.55 to $3.90 (1 to 90 days) | 5 GB | May be limited under the operator’s fair usage policy | Yes |
For another unlimited option, see the Yesim Unlim Day Pass. Terms on hotspot tethering and speed differ by plan, so read the fair usage policy first.
Can you get an Ireland eSIM with a phone number for calls and SMS?
Most travel eSIMs are data-only. Options that add a number or calls:
- An operator or reseller eSIM with a number. Terms and coverage vary, so verify them.
- A tourist eSIM or SIM from Three, Vodafone or Eir.
- Internet calls over WhatsApp, FaceTime or Telegram.
- Paid in-app calls on Roamless, as a review reports.
- Saily’s US number add-on, and Airalo’s Discover+ voice plan, as a review reports.
- A virtual number. See Yesim virtual numbers for texts and codes.
For calls to restaurants and car rental desks, a local plan or a roaming day pass is safest. Keep your primary SIM for SMS and two-factor codes in dual SIM mode, and send data through the eSIM. That also avoids roaming fees on data.
See does an eSIM have a phone number. The best eSIM for Ireland with phone number needs is rarely a data plan.
Does an Ireland eSIM work in Northern Ireland?
The answer depends on the plan. Northern Ireland is part of the UK and runs on UK networks. The best eSIM for Ireland and Northern Ireland names both. A plan for the Republic of Ireland and Northern Ireland together must say so.
Why does the border matter?
The border is invisible on the road, but the networks change. Your phone switches to a UK network when you cross. A plan for Ireland only may not work there, or it may roam.
Which plans cover both parts of the island?
Coverage on the island of Ireland follows the plan’s country list. Northern Ireland is part of the United Kingdom, so a plan needs the UK on its list to work there. We sorted the plan types by that rule.
| Plan type | Republic of Ireland | Northern Ireland | Rule |
|---|---|---|---|
| Ireland-only plan | Yes | Yes | Covers the whole island |
| UK and Ireland plan | Yes | Yes | Covers the whole island |
| Regional Europe eSIM | Yes | Yes | Covers the whole island |
| Global plan | Yes | Yes | Covers the whole island |
What should you do if your trip crosses the border?
Follow this checklist:
- Pick a plan that names both territories.
- If you buy two eSIMs, label the profiles “Ireland” and “UK”.
- Turn data roaming off on your home SIM.
- Check the operator coverage map before you go.
- Choose the network manually if the signal drops.
For more, read mobile internet in the UK.
How do you choose the best eSIM for Ireland?
Four things decide it. Start with the network and the data amount. Then check the extras and your phone.
Which network is best?
Ireland has three mobile operators: Three, Eir and Vodafone. Rural quality varies by operator. Pick an eSIM that names its network, and save offline maps for the west. The best eSIM in Ireland for rural trips has a stated network.
How much data and how many days do you need?
Your daily data use depends on what you do on the road. We worked out typical use for maps, messaging, social media and video calls, then scaled it to trip length. Validity matters as much as the GB. A plan that expires before your last day is wasted money.
| Profile | Typical activities | Daily data | 7-day total | 14-day total | Suggested plan |
|---|---|---|---|---|---|
| Light | Maps, messages, email | About 0.3 GB | About 2 GB | About 4 GB | Small fixed data plan |
| Average | Maps, social media, music, some video | About 0.7 GB | About 5 GB | About 10 GB | 5 to 10 GB fixed plan |
| Heavy | Video calls, streaming, hotspot | About 2 GB or more | 14 GB or more | 28 GB or more | Large plan or unlimited |
Yesim’s data guide says 1 GB covers about 1 hour of Full HD streaming. It also covers 1 to 1.5 hours of HD video calls. Try the Yesim data calculator or read how much mobile data you need.
What should you check on hotspot, top-up and support?
Use this checklist:
- Hotspot tethering: allowed or not, and the daily limit.
- Top-up: can you add data without a new install?
- Support: which channels, and how fast.
- Validity: does the plan start on install or on first use?
- Refund: what the policy covers.
Read also: Roaming in the UK.
Do you need an unlocked phone?
Yes. An eSIM works only on a phone with eSIM support and no carrier lock. Check the model on the eSIM compatibility page. Then ask your carrier if a lock applies. Some carriers delay releasing a newly bought phone, so check the policy.
See the carrier lock guide for eSIM.
What is eSIM coverage like across Ireland?
Cities have good coverage. Dublin, Cork, Galway and Limerick keep you connected without effort. The west coast is a different story. Mountains and remote coastline leave gaps on every operator, so plan for dead spots on road trips. Download offline maps and your route before you leave town.
| Region | Typical coverage | Weak spots | Tip |
|---|---|---|---|
| Dublin, Cork, Galway, Limerick | 4G and 5G | Few | Fine for maps, calls over data and hotspot |
| Wild Atlantic Way, Connemara, Ring of Kerry | Uneven | Gaps between villages | Download offline maps before you start |
| Donegal and West Cork | Uneven | Remote coasts and hills | Do not rely on one signal |
| Aran Islands | Limited | Speed may fall | Save maps and tickets offline |
How is coverage in Dublin, Cork, Galway and Limerick?
Main cities have 4G and 5G. See the eSIM for Dublin page for Dublin plans. Yesim’s Ireland page lists Cork, Dublin, Galway, Limerick, Tralee and Waterford among covered cities.
How is coverage on the Wild Atlantic Way, Connemara and the Ring of Kerry?
Signal can fall to 3G or drop between villages. Follow these tips:
- Download offline maps before you leave the hotel.
- Set your route before you start driving.
- Remember that traffic drives on the left.
Yesim tip: save offline maps for Connemara and Kerry at home. Rural stretches often have no signal.
How is coverage on the Aran Islands and in remote areas?
Speeds can fall on the islands and in inland Donegal and West Cork, and quality depends on the operator. We cannot promise a signal everywhere.
Should you buy a local tourist eSIM or SIM card in Ireland?
Three, Vodafone and Eir and their sub-brands sell a tourist SIM card and some eSIMs. A three ireland esim or an ireland sim card suits calls and long stays. The trade-offs:
- Pros: a local number and calls, plus unlimited data on some plans.
- Cons: you buy it on site, you may need registration, and prices change. Verify terms first.
For more on numbers, read does an eSIM have a phone number.
How do you set up an Ireland eSIM before your flight?
Install the eSIM a few days before you fly, on stable Wi-Fi.
What are the setup steps?
Follow these steps:
- Check phone compatibility and any carrier lock.
- Buy a plan.
- Receive the QR code.
- Install the profile on Wi-Fi. On iPhone: Settings, Cellular, Add eSIM. On Android: Settings, Network & internet, SIMs, Add SIM.
- Label the profile “Ireland”.
- Select the eSIM for mobile data.
- In Ireland, turn on the line and Data Roaming for it.
- Turn data roaming off on your home SIM.
See the iPhone eSIM setup guide and the guide to turning data roaming on or off. To start, download eSIM app.
When does the plan start?
Some plans start on first data use in Ireland. Others start at install. Check the plan page, and install early without turning the line on.
Yesim tip: keep the eSIM line off until you land, if the plan starts at install.
What if your eSIM is not working in Ireland?
Try these fixes:
- Turn on Data Roaming for the eSIM line.
- Select the eSIM for mobile data.
- Switch airplane mode on and off.
- Choose the network manually.
- Restart the phone, then write to support with your order number.
Read also: Best pay-as-you-go plans for the UK.
Final verdict: which eSIM should you choose for Ireland?
For the Republic and a short trip, a small fixed data plan with a stated network is enough. For Belfast, pick a plan that names both territories. For calls, use a number or a local plan. For heavy use, take a large plan or an unlimited plan with clear terms.
Check this before you buy:
- The network named on the plan page.
- Northern Ireland, by name, if you will cross.
- The fair usage policy on unlimited plans.
- Hotspot, top-up and refund conditions.
The best eSIM Ireland visitors pick depends on their route. Pick a plan on eSIM for Ireland, download eSIM app, or read Yesim reviews first. For regional trips, see best eSIM for Europe and mobile internet in Europe, or the Yesim global eSIM.
FAQ
Does an eSIM work in Ireland? Yes, on a phone with eSIM support and no carrier lock. Install it before the flight and turn on Data Roaming when you land.
Which network do Ireland eSIMs use: Three, Eir or Vodafone? It depends on the provider. Some name their network and some do not. Check the plan page.
Will my Ireland eSIM work in Northern Ireland? Not always. Northern Ireland uses UK networks, so confirm that the plan lists it.
Do I need a separate UK eSIM for Northern Ireland? Only if your plan does not cover it. A regional Europe and UK plan can cover both.
Can I use my US phone plan in Ireland instead of an eSIM? Yes. AT&T lists a $12 day pass for Ireland. Check your own carrier’s price.
Can I make calls and send texts with an Ireland eSIM? Most are data-only. Use internet calls, a plan with a phone number for calls and SMS, or your home SIM.
How much data do I need for 10 days in Ireland? Light users need about 3 GB, average users about 7 GB and heavy users 20 GB or more. These are estimates.
Is unlimited data on an Ireland eSIM really unlimited? Not at full speed. Providers set a daily high-speed limit or a fair usage policy.
Is an eSIM cheaper than a local SIM card in Ireland? It can be, for short trips. A local SIM gives a number and may suit long stays.
When should I install my Ireland eSIM? Install it a few days before you fly, on Wi-Fi. Then check when the plan starts.
Yesim Team
Max Pankratov