Best eSIM for Greece 2026: Vodafone Island Coverage (Santorini, Mykonos)

Summary

For a Greece island-hopping trip, network choice beats price: a Vodafone-backed travel eSIM is the right pick because Cosmote has the only reliable coverage on smaller Cyclades and Dodecanese islands. A 10 GB plan runs a few dollars for 30 days — well below roaming, with 4G fast enough for ferries, maps, and streaming.

Greece eSIM plans — live from our catalogue
Plan	Price	Network	Speed	After daily allowance	IP breakout
Day Pass · 500 MB/day at full speed · Flexible 1–365 days	US$1.99	Wind / Vodafone	5G	512 Kbps	FR/NL/UK
3.0 GB · 30 days	US$2.99	Wind / Vodafone	5G	—	FR/NL/UK
50 GB · 180 days	US$42.99	Wind / Vodafone	5G	—	FR/NL/UK

Hotspot and tethering are allowed on every plan we sell. Plans are data-only unless the plan page states otherwise — only selected plans carry calls or SMS. IP breakout is where your traffic exits the network, which is not always the country you are visiting. Prices and networks are read from the same catalogue that powers our machine-readable pricing file, so this table cannot go stale against checkout.

How Greek mobile networks work in 2026

Greece has three carriers — Cosmote (owned by Deutsche Telekom), Vodafone, and Wind/Nova. Cosmote covers more islands more completely than its rivals, especially on smaller Cycladic and Dodecanese islands. Vodafone is solid on Athens, Thessaloniki, and well-trafficked islands like Santorini, Mykonos, and Crete, while Wind/Nova is weakest on islands. The takeaway: if you're visiting multiple islands, check which network your eSIM rides — Cosmote is not available to travel eSIM brands, so Vodafone is the strongest network you can actually buy.

Greece eSIM 2026: who wins on what

Five brands, the same five questions, in every country guide we publish. Coverage figures are each brand’s own published network list; price and plan figures come from esimDB, checked 18 August 2026. Worth saying up front: Cosmote leads Greece on coverage and no major travel eSIM rides it, so every brand here competes below that.

Category	Winner	Runner-up	On what basis
Widest coverage	YonoSIM & Airalo	—	both publish 2 networks
Cheapest per GB	Nomad	YonoSIM	$0.62/GB vs $0.80 — at 50GB/$31/30d
Widest plan range	YonoSIM	Saily	10 distinct data sizes vs 9
Publishes its network	YonoSIM & Airalo	—	Nomad, Saily, Holafly name no carrier

Brand	Networks in Greece	Best $/GB	Plans	Sizes
YonoSIM	Vodafone (5G) · Wind (5G)	$0.80	94	10
Airalo	Nova · Vodafone	$0.84	74	8
Nomad	Not disclosed	$0.62	38	8
Saily	Not disclosed	$1.90	33	9
Holafly	Not disclosed	—	—	—

Networks are each brand's own published figure. Prices, plan counts, and data sizes via esimDB, checked 18 August 2026. Holafly publishes neither a per-country carrier nor plans on esimDB, so it cannot be scored on price or range here. Plan range is counted in distinct data sizes, not plan count.

Which one to pick

Coverage first? YonoSIM and Airalo publish the most networks in Greece (Nova · Vodafone).
Cheapest data right now is Nomad at $0.62/GB — YonoSIM is $0.80. If price is the only thing you are optimising, buy theirs.
Want an unusual data size? YonoSIM offers the most granular ladder (10 distinct sizes).
Want the data back if you don’t use it? YonoSIM refunds unused data automatically after 30 days; the others require you to ask. Check each brand’s current terms before you buy.
If you truly need Cosmote: no travel eSIM here rides it. Buy a local SIM on arrival.

Plan size by trip length

Trip length	Data	Typical price	Best for
Athens city break	3 GB	US$2–4	Maps + messaging
1 week islands	10 GB	US$7–9	Ferries, maps, uploads
2 weeks / heavy use	20 GB or unlimited	US$16–21	Streaming, hotspot, video

eSIM vs roaming vs pocket Wi-Fi

Option	Cost	Setup time	Coverage
eSIM (Vodafone)	Low	~5 min (pre-install on Wi-Fi)	Excellent (widest island reach)
Carrier roaming	High	Instant (already enabled)	Medium (partner-dependent)
Pocket Wi-Fi	Medium	Airport pickup / rental	Good (extra device to charge)

Best pick for your trip type

Athens + one big island (Santorini, Mykonos, Crete): Vodafone handles it comfortably; a 5–10 GB plan is plenty. Multi-island Cyclades/Dodecanese hopping: stay on Vodafone and size up — on the smallest islands only a local Cosmote SIM does better. Greece + other EU stops: a regional Europe plan via YonoSIM's Europe coverage, but confirm the Greek routing.

FAQ

QWhich Greek network do travel eSIMs use?

ACosmote has the widest island coverage but does not supply travel eSIM brands. YonoSIM publishes Vodafone and Wind; Airalo publishes Nova and Vodafone. Both therefore reach Vodafone Greece, the strongest of the reachable networks on the smaller Cyclades. Saily, Holafly, and Nomad do not publish a Greek carrier at all, so you cannot check before buying.

QWhich Greek carrier has the best island coverage?

ACosmote has the most reliable coverage on smaller Cyclades and Dodecanese islands — the only carrier you can count on across remote island-hopping itineraries. Vodafone is solid on Santorini, Mykonos, and Crete; Wind/Nova is weakest on islands.

QHow much data do I need for a Greece island-hopping trip?

A5–10 GB covers a typical 1–2 week trip with maps, ferry apps, social uploads, and video calls. A 10 GB plan runs a few dollars for 30 days; heavy users should pick unlimited.

QIs there 5G on the Greek islands?

AMost islands run on 4G LTE (20–60 Mbps), which is more than enough for streaming and video calls. 5G is concentrated in Athens and Thessaloniki, where Cosmote leads. For islands, 4G coverage breadth matters more than 5G speed.

QWill a Europe-regional eSIM cover Greece?

AYes — Greece is an EU member, so any regional Europe travel eSIM works. But for island-heavy trips, check which network the plan actually rides: Cosmote has the best island reach and sells to no travel eSIM brand, so Vodafone-backed single-country Greece plan is the safer pick.

Bottom line

For most Greece trips, a 10 GB Vodafone-backed travel eSIM at a few dollars is the right call — install at home, land in Athens, and keep coverage as you ferry between islands. On multi-island routes, network choice matters more than saving a dollar, so check what the plan rides rather than buying on price alone.

Related guides

Originally published on www.yonosim.com/en/blog/best-esim-greece-2026 · YonoSIM — You Only Need One SIM