Will I have signal on the caldera and on ferries between islands?

Coverage is good across the caldera villages and most beaches. On ferries you'll usually keep a signal near the coast and between close islands, but expect it to drop in open water, so download tickets and maps beforehand.

Is the same plan valid if I island-hop from Santorini?

Yes. It's a single national Greece plan, so the same eSIM keeps working if you ferry on to Ios, Naxos or Mykonos, or fly back to Athens - no need to buy a new SIM for each island.

Santorini eSIM.

A single Santorini eSIM for Oia's sunsets, caldera hikes and last-minute ferry checks.

from £1.12/day · unlimited dataAll of Greece →

Unlimited data5G where availableInstant QR by emailKeep your number

1 · How many days?

10 daysOther:days

2 · How much data?

3GBBest pricevalid 15 days£6.08£0.61/day

Cheapest plan covering your trip: 3GB, valid 15 days.

Travellers (one eSIM each)

1 × 3GB (valid 15 days) · 10-day trip£6.08

Every plan: QR by email in minutes · data-only, keep your number · days start on first connection · top up anytime · the total shown is the whole bill. What's included →

Good to know in Santorini

Santorini's ferries run from Athinios port, not Fira - roads there are steep and winding, so keep your eSIM live to track your transfer, confirm the ferry gate and re-check departures, which shift with the wind.

Does an eSIM work in Santorini?

Yes — the Greece eSIM works in Santorini wherever its partner networks have signal. Signal is strong across Fira, Oia and the caldera-edge villages, but it genuinely thins on the remote southern beaches, along the Fira-to-Oia clifftop hike, and out on the volcano boat trips.

Your guide to Santorini

Santorini eSIM: your local data guide.

Santorini's cliffside villages don't make navigation easy, so live data matters: you'll lean on it to time the Oia sunset before the crowds swell, book a caldera catamaran cruise, and find your way down Fira's stepped lanes. A Santorini eSIM keeps maps, restaurant bookings and photo uploads flowing whether you're in Imerovigli or on Perissa's black-sand beach.

One eSIM for Santorini and all of Greece. It's the national Greece eSIM — from £1.12/day with unlimited data, working the same in Santorini as it does the moment you leave it.

Landing at Santorini (Thira) National Airport (JTR)?

Install the QR at home, then switch the eSIM on as you taxi in — you're online before you reach the arrivals hall.

Santorini eSIM pricingbest-value plan · per day

Days

Per day

Total

Saving

3 days1GB

£0.85

£2.53

—

5 days1GB

£0.51

£2.53

−40%

7 days1GB

£0.36

£2.53

−57%

10 days3GBPopular

£0.61

£6.08

−28%

15 days3GB

£0.41

£6.08

−52%

30 days3GB

£0.20

£6.08

−76%

Unlimited plans7 days £18.28·15 days £25.39·30 days £33.52

Each trip length shows the best-value plan that covers it. Total always shown before you pay.

On the ground

Where you'll lean on data in Santorini.

Oia

Reliable data helps you reserve a sunset dinner table and geotag those blue-domed church photos before the evening rush.

Fira

Use maps and ride apps to navigate the capital's cliff paths, cable car and the bus links to the beaches.

Imerovigli

Stream music on the quieter caldera walk to Skaros Rock and share the view straight to your feed.

Akrotiri & Perissa

Pull up opening times for the ancient Akrotiri site, then check bus schedules back from the black-sand beaches.

The practical bit

Getting around Santorini on your eSIM.

Apps you'll want online in Santorini

Ferryhopper— Books and stores your ferry tickets to Athens, Crete and nearby isles; syncs over data.
Welcome Pickups— Pre-books airport and port transfers with flight tracking; the app updates your driver over data.
Google Maps— Guides you along narrow caldera roads and to the Fira bus hub; data keeps it live.

How long to stay in Santorini

Santorini is usually a two to three day stop, long enough for sunset in Oia, a caldera boat trip to the volcano, and an evening wandering Fira.

How much data for Santorini

Santorini is all about sharing sunsets, so photo and video uploads dominate; 3-5 GB suits a couple of days, but choose Unlimited if you plan to stream, video-call home or post reels every evening.

Coverage in Santorini

Signal is strong across Fira, Oia and the caldera-edge villages, but it genuinely thins on the remote southern beaches, along the Fira-to-Oia clifftop hike, and out on the volcano boat trips.

Where you're headed

Discover Santorini.

Santorini, Greece — streets and everyday scenes · stay connected with a Santorini eSIM from My Holiday SIM

Santorini, Greece — sights worth exploring · stay connected with a Santorini eSIM from My Holiday SIM

Santorini, Greece — a travel moment · stay connected with a Santorini eSIM from My Holiday SIM

The short version.

A travel eSIM is data only. It sits next to your home SIM, so your number, texts and WhatsApp carry on as normal. Pick unlimited, priced per day, or a fixed bundle of GB if it's mostly maps and messages. Install it on Wi-Fi before you fly — the days only start once it first connects in Santorini, and it finds a partner network on its own.

Coverage in Greece.

5G in supported areas on compatible devices; 4G more widely available

Connected · 5G

Cosmote
Vodafone
Nova

Before you fly

Santorini eSIM questions, answered.

Yes. Set it up before flying and it connects to a Greek network automatically once you land at Thira airport, so you can arrange your transfer to Oia or Fira without hunting for airport Wi-Fi.