For most Greece travelers, Holafly is the best eSIM, because its unlimited data on Cosmote (Greece's largest carrier) removes any worry about rationing during a photo-heavy, island-hopping trip where hotel WiFi is often slow. Budget travelers or those doing an Athens-only city break can save with Nomad, which offers the lowest per-GB pricing with full hotspot support. If you need full tethering plus easy in-app top-ups, Airalo is a strong alternative on Cosmote and Vodafone Greece. Not sure how much data you need? Try the eSIM Finder.
Quick Pick: the Best eSIM for Greece
Holafly (Unlimited / 7 days): Unlimited data on Cosmote's network covers the Greek islands reliably, ideal for photo sharing, ferry-booking apps, and maps during island-hopping trips.
Our picks
Best overall: Holafly. Lowest per GB: Nomad. Unlimited: Holafly. Or use the eSIM Finder.
Greece eSIM Plans Compared
Indicative pricing. Tap through for live rates.
| Provider | Plan | Data | Duration | Price | Network |
|---|---|---|---|---|---|
| Airalo | Greece 1GB | 1 GB | 7 days | $5 | Cosmote / Vodafone Greece |
| Airalo | Greece 3GB | 3 GB | 30 days | $11 | Cosmote / Vodafone Greece |
| Airalo | Greece 5GB | 5 GB | 30 days | $16 | Cosmote / Vodafone Greece |
| Airalo | Greece 10GB | 10 GB | 30 days | $26 | Cosmote / Vodafone Greece |
| Airalo | Greece 20GB | 20 GB | 30 days | $37 | Cosmote / Vodafone Greece |
| Nomad | Greece 1GB | 1 GB | 7 days | $4 | Vodafone Greece / Wind |
| Nomad | Greece 5GB | 5 GB | 30 days | $14 | Vodafone Greece / Wind |
| Nomad | Greece 10GB | 10 GB | 30 days | $22 | Vodafone Greece / Wind |
| Nomad | Greece 20GB | 20 GB | 30 days | $32 | Vodafone Greece / Wind |
| Holafly | Unlimited 5-day | Unlimited | 5 days | $19 | Cosmote |
| Holafly | Unlimited 7-day | Unlimited | 7 days | $27 | Cosmote |
| Holafly | Unlimited 10-day | Unlimited | 10 days | $34 | Cosmote |
| Holafly | Unlimited 15-day | Unlimited | 15 days | $47 | Cosmote |
| Holafly | Unlimited 30-day | Unlimited | 30 days | $69 | Cosmote |
Airalo Greece Plans
Airalo: Best for Hotspot Users and Short Trips
Flexible data tiers with full hotspot support on Cosmote and Vodafone Greece
Airalo's Greece plans offer a good balance of price and flexibility. The 3GB plan at $11 is perfect for a short Athens city break where you'll use hotel WiFi for heavy tasks. The 5GB plan at $16 gives more room for an island trip where WiFi might be unreliable.
Full hotspot support makes Airalo the clear winner if you're traveling with a partner and want to share one data plan. The top-up feature is also handy, if you're island-hopping and realize you need more data, you can buy it instantly through the app.
Strengths
Weaknesses
Holafly Greece Plans
Holafly: Best for Island-Hopping and Heavy Data Use
Unlimited data on Cosmote's network for worry-free connectivity across Greece
Holafly's unlimited data is especially valuable for Greek island trips. WiFi on many islands is slow and unreliable, some smaller islands and beach areas have barely functional internet at hotels. With unlimited data, you can use Google Maps to find hidden beaches, book last-minute ferries through apps like Ferryhopper, share sunset photos from Santorini in real time, and video-call family without worrying about data caps.
The 15-day plan at $42 is the sweet spot for a typical Greece island-hopping itinerary (Athens + 2–3 islands). The per-day cost drops to under $3, which is outstanding value for unlimited data in a country where photo opportunities are constant.
Strengths
Weaknesses
Nomad Greece Plans
Nomad eSIM: Best Budget Option for Greece
The lowest per-GB pricing for Greece with full hotspot support
Nomad offers the lowest per-GB pricing for Greece. Their 5GB plan at $14 saves you $2 compared to Airalo, and the 10GB plan at $26 saves $4. For budget travelers staying in Athens or visiting one or two well-connected islands, Nomad is an excellent value.
Nomad's Greece plans typically connect to Vodafone Greece or Wind, both of which provide good coverage on the mainland and popular islands. However, on smaller or more remote islands, Cosmote (used by Airalo and Holafly) generally has better coverage.
Strengths
Weaknesses
Mobile Networks in Greece
Greece has three major mobile networks, and the choice matters especially for island travel. Cosmote (owned by Deutsche Telekom) is the largest carrier and has the widest coverage across both the mainland and the Greek islands, including smaller Cyclades islands where the other networks thin out. Vodafone Greece is strong on the mainland and the popular tourist islands such as Santorini, Mykonos, Crete, and Rhodes. Wind (now merged with Vodafone under the Nova brand) provides solid coverage in urban areas and major resorts but is weaker on remote islands and mountain interiors.
Airalo connects to Cosmote and Vodafone Greece, giving broad coverage with full hotspot support. Holafly uses Cosmote exclusively, which is the safest choice for island-hopping. Nomad routes through Vodafone Greece and Wind, which works well for the mainland and popular islands but may disappoint on smaller or more remote destinations. As an EU member state, Greece also benefits from EU roaming rules: if your home plan is from another EU country, standard roaming charges do not apply, but most travelers visiting from outside the EU will find a travel eSIM far cheaper than paying roaming fees.
5G in Greece
5G is available in Athens, Thessaloniki, and parts of Crete and Rhodes on Cosmote and Vodafone Greece. Most travel eSIMs connect to 4G/LTE, which is more than fast enough for maps, streaming, and video calls. Treat 5G as a bonus where available rather than a guarantee on the islands.
Coverage Across Greece
Coverage where travelers actually go:
| Area | Coverage | Notes |
|---|---|---|
| Athens | Excellent | Full 4G coverage across the city, metro stations, and tourist areas including the Acropolis and Plaka. |
| Santorini | Very good | Fira, Oia, and Perissa well covered on Cosmote; some beach areas and cliff paths can be weaker. |
| Mykonos | Very good | Mykonos Town and the main beaches are well covered; hilly interior and remote beaches can be patchy. |
| Crete | Very good | North coast cities (Heraklion, Chania, Rethymno) are excellent; south coast and gorges like Samaria are variable. |
| Rhodes and Corfu | Good | Old Town areas and main resorts are strong on Cosmote; remote villages and the far west coast can be weaker. |
| Smaller Cyclades (Milos, Naxos, Paros) | Good | Main ports and towns are covered on Cosmote; mountain interiors and isolated beaches may lose signal. |
| Remote and smaller islands | Variable | Coverage exists on Cosmote around ferry ports but can be unreliable elsewhere; download offline maps before arriving. |
How to Choose the Right Plan
The right Greece eSIM depends on your itinerary, especially whether you're island-hopping or staying on the mainland. Here's how to decide:
Consider Your Itinerary
Athens-only trips need less data and any network works fine. Island-hopping trips need more data (ferry booking apps, maps, fewer WiFi options) and benefit from Cosmote's superior island coverage. Multi-island trips of 10+ days benefit most from Holafly's unlimited data.
Factor in Island WiFi Reality
WiFi at Greek island hotels and restaurants is often slow, especially during peak summer season when bandwidth is shared among many guests. If you plan to upload lots of photos or make video calls, having generous mobile data is more reliable than depending on WiFi.
Match Your Budget
For the lowest cost per GB, go with Nomad. For the best island coverage with unlimited data, choose Holafly. For flexible data with full hotspot support, choose Airalo.
Our Recommendation by Traveler Type
Athens city break (3–4 days): Nomad 3GB, affordable with solid coverage; use hotel WiFi for heavy uploads.
Santorini + Mykonos (7 days): Holafly Unlimited 7-day, heavy photo usage and unreliable island WiFi make unlimited data worth it.
Island-hopping (10–15 days): Holafly Unlimited 15-day, ferry booking apps, maps, and photo sharing across multiple islands.
Couples sharing data: Airalo 10GB, full hotspot so both phones stay connected across the islands.
Budget backpackers: Nomad 5GB, lowest cost with tethering for laptop access at hostels.
Frequently Asked Questions
Will my eSIM work on the Greek islands?
Yes. On popular islands like Santorini, Mykonos, Crete, and Rhodes, coverage on the Cosmote network is reliable around the towns, ports, and main beaches. Smaller or more remote islands and mountain interiors can be weaker, so download offline maps for day trips.
Will my eSIM work on ferries between islands?
You will have signal near ports but will likely lose it mid-crossing. Signal typically drops around 15 to 20 minutes after departure and returns as you approach your destination island. Save ferry tickets and maps offline before boarding.
Should I get a Greece-only plan or a Europe plan?
If you are only visiting Greece, a country-specific plan is cheaper. If your trip includes other countries (common combinations: Greece and Italy, or Greece as part of a wider Mediterranean cruise), a Europe plan is more convenient. Note that Turkey is not included in most Europe plans, so check carefully if that is in your itinerary.
Is it better to buy a Cosmote SIM at Athens airport?
An eSIM is almost always the better choice. Physical SIMs at Athens airport (ATH) are more expensive and require waiting in line with your passport. An eSIM is installed before your flight and works immediately on landing, with no paperwork required.
Do these eSIMs include phone calls?
No, all three providers offer data-only eSIMs. For voice calls, use WiFi calling through your home carrier, or apps like WhatsApp, FaceTime, or Skype over your eSIM data connection. WhatsApp is widely used in Greece for restaurant reservations and tour bookings.