Greece has good coverage on the mainland and major islands. An eSIM keeps you connected while island-hopping from Santorini to Mykonos to Crete.
Updated March 2026
Greece 3GB — 3 GB
Airalo provides reliable Greece coverage on the Cosmote or Vodafone GR networks. Great coverage across the mainland and popular islands.
Get this dealSide-by-side comparison of the best eSIM deals for Greece. Sorted by price.
| Provider | Plan | Data | Validity | Price | Price/GB | Network | |
|---|---|---|---|---|---|---|---|
| Best Deal Airalo | Greece 3GB | 3 GB | 30 days | £5.00 | £1.67 | Cosmote / Vodafone GR | View |
| Airalo | Greece 10GB | 10 GB | 30 days | £13.00 | £1.30 | Cosmote / Vodafone GR | View |
| Holafly | Greece Unlimited | Unlimited | 7 days | £19.00 | N/A | Vodafone GR | View |
| Saily | Greece 5GB | 5 GB | 14 days | £6.99 | £1.40 | Cosmote | View |
| Ubigi | Greece 3GB | 3 GB | 30 days | £8.00 | £2.67 | Cosmote | View |
| MobiMatter | Greece 5GB | 5 GB | 14 days | £7.50 | £1.50 | Vodafone GR | View |
Common questions about using an eSIM in Greece.
Airalo offers the cheapest Greece eSIM at £5.00 for 3 GB with 30-day validity on the Cosmote or Vodafone network.
Yes, popular islands like Santorini, Mykonos, Crete, Rhodes, and Corfu have good mobile coverage. Smaller, less touristy islands may have weaker signal, especially inland.
Coverage during ferry crossings between Greek islands can be intermittent. You may lose signal mid-crossing and regain it as you approach an island. Download offline maps and entertainment before ferry trips.
For a week or two of Greek island hopping, we recommend 5-10 GB. You will rely on mobile data more than Wi-Fi on smaller islands, especially for maps and booking.
If you are only visiting Greece, a Greece-specific eSIM is cheaper. If your trip includes Turkey, Italy, or other nearby countries, a Europe regional eSIM is better value.