Best eSIM for Slovenia: Plans and Prices Compared
July 19th, 2026
TL;DR
The cheapest Keep On Roaming eSIM for Slovenia is the Roam Like Home® Slovenia 1 GB 7 Days plan at £4.50. If you want the lowest price per gigabyte, the Slovenia 100 GB 30 Days plan works out at £0.48 per GB (£48.00 for 100 GB), with the 50 GB 30 Days plan close behind at £0.49 per GB (£24.50). Prefer not to count gigabytes at all? Unlimited data starts at £6.50 for 1 day and runs up to £35.50 for 30 days. All plans connect to Telekom Slovenije and Telemach, including 5G.
What to look for in a travel eSIM for Slovenia
Slovenia is compact, but a good trip can still take you from Ljubljana's old town to alpine lakes and the Adriatic coast in a few days. A few things matter more than anything else when you choose an eSIM.
Network coverage. An eSIM is only as good as the networks it connects to. Keep On Roaming plans for Slovenia use Telekom Slovenije and Telemach, with access to 2G, 3G, 4G and 5G.
Plan flexibility. Trips vary, so plans should too. A weekend in Ljubljana needs very different data to a month of remote work from Bled. Look for a range that covers short unlimited bursts as well as longer 30-day allowances, so you are not paying for data you will never use.
Top-ups. Underestimating your data should not mean starting from scratch. With Keep On Roaming, existing eSIMs can be topped up with more data from your account dashboard, without installing a new eSIM.
Installation before you fly. The best time to sort your connectivity is at home on your own Wi-Fi. Keep On Roaming eSIMs install before you travel via QR code, then activate when you arrive in Slovenia and connect. You land, your phone finds a local network, and you are online.
The Keep On Roaming plans for Slovenia
Here is the full line-up. Every plan below connects to Telekom Slovenije and Telemach at 2G, 3G, 4G and 5G speeds.
| Plan | Data | Duration | Price |
|---|---|---|---|
| Roam Like Home Slovenia 1 GB 7 Days | 1 GB | 7 days | £4.50 |
| Roam Like Home Slovenia Unlimited 1 Days | Unlimited | 1 day | £6.50 |
| Roam Like Home Slovenia 2 GB 15 Days | 2 GB | 15 days | £7.00 |
| Roam Like Home Slovenia 3 GB 30 Days | 3 GB | 30 days | £8.00 |
| Roam Like Home Slovenia 5 GB 30 Days | 5 GB | 30 days | £10.00 |
| Roam Like Home Slovenia Unlimited 3 Days | Unlimited | 3 days | £10.50 |
| Roam Like Home Slovenia 10 GB 30 Days | 10 GB | 30 days | £13.00 |
| Roam Like Home Slovenia Unlimited 5 Days | Unlimited | 5 days | £13.00 |
| Roam Like Home Slovenia Unlimited 7 Days | Unlimited | 7 days | £14.50 |
| Roam Like Home Slovenia 20 GB 30 Days | 20 GB | 30 days | £16.00 |
| Roam Like Home Slovenia Unlimited 10 Days | Unlimited | 10 days | £16.00 |
| Roam Like Home Slovenia Unlimited 15 Days | Unlimited | 15 days | £18.50 |
| Roam Like Home Slovenia 50 GB 30 Days | 50 GB | 30 days | £24.50 |
| Roam Like Home Slovenia Unlimited 30 Days | Unlimited | 30 days | £35.50 |
| Roam Like Home Slovenia 100 GB 30 Days | 100 GB | 30 days | £48.00 |
Which plan should you pick?
For a short city break where you mostly use maps and messaging, the 1 GB 7 Days plan at £4.50 keeps costs to a minimum. For a typical one or two week holiday, the 10 GB 30 Days plan at £13.00 (£1.30 per GB) gives comfortable headroom for photos, navigation and video calls home.
Heavy users get the strongest per-gigabyte pricing at the top of the range. The 20 GB plan works out at £0.80 per GB, the 50 GB plan at £0.49 per GB, and the 100 GB plan at £0.48 per GB, the lowest in the line-up.
If you would rather not think about data at all, the unlimited plans map neatly onto trip lengths: 1, 3, 5, 7, 10, 15 or 30 days. A long weekend is covered by the Unlimited 3 Days plan at £10.50, and a full week by the Unlimited 7 Days plan at £14.50.
You can browse and compare all of these on the Slovenia plans page.
Frequently asked questions
Will my phone work with an eSIM?
Most recent smartphones support eSIM, but it varies by model and region, so check your handset's settings or manufacturer documentation before you buy. Your phone also needs to be unlocked to use an eSIM from any provider other than your home carrier.
When should I install my eSIM?
Before you travel. Install the eSIM via the QR code while you are still at home with reliable Wi-Fi. It then activates when you arrive in Slovenia and connect to a local network, so no plan days are wasted.
What happens if I run out of data?
You can top up your existing eSIM with more data from your account dashboard. There is no need to buy and install a new eSIM mid-trip.
Will my phone number change?
No. Keep On Roaming plans are data-only, so your existing SIM, number, calls and texts keep working alongside the eSIM. You simply route your mobile data through the Slovenian plan.
Which networks will I be on in Slovenia?
Your eSIM connects to Telekom Slovenije and Telemach, with 2G, 3G, 4G and 5G access.
Do the 30-day plans cover a shorter trip?
Yes. The duration is a maximum, not a minimum. A 30-day plan such as the 5 GB option at £10.00 is a sensible pick for a two week trip if you want the larger allowance without watching the calendar.
Ready to get connected?
Pick the plan that fits your trip, install it before you pack, and land in Ljubljana already online. Browse all Slovenia plans and get set up in a few minutes.