eSIM for Thessaloniki
Thessaloniki is Greece's vibrant second city, a Byzantine and Ottoman port on the Aegean with a famous waterfront, a buzzing food and nightlife scene and a brand-new metro. Fast 5G covers the centre, the seafront and the new metro, and all three Greek operators perform strongly. For a city break the network barely matters; the only nuance is on day trips to Mount Olympus, Halkidiki and the countryside, where Cosmote holds the steadiest signal.
An eSIM Greece gives you access to the same plans in Thessaloniki as in the rest of the country. 5 GB is generally enough for maps, messaging and social media, while video streaming and hotspot use require more data. The plans shown range from 1 to 50 GB and start at $1.90. They are fully refundable within 30 days provided the eSIM has not been used on a network at the destination. The activation link is sent by email after purchase.
Getting connected in Thessaloniki
Most travellers arrive at Thessaloniki Makedonia airport southeast of the city. With an eSIM installed before you fly, you land already connected, so you can check the bus or metro, find your hotel and order a ride before you leave arrivals. Having maps and ticketing working from the moment you land makes the transfer easy, and the new metro speeds the trip into town.
Greece eSIM plans
Prices in USD. Instant QR activation. Pick your data, land connected.
Coverage in Thessaloniki
Thessaloniki has dense, fast coverage on all three operators. The White Tower and the waterfront, the Ladadika and the centre, the upper town of Ano Poli and the new metro all carry strong 5G on Cosmote, Vodafone and Nova. The recently opened metro stays connected underground. The difference shows on the way out of town: Cosmote has the broadest rural footprint and holds a steadier signal on the roads to Mount Olympus, the beaches of Halkidiki and the Macedonian countryside.
Best network here
Cosmote, Vodafone and Nova are all strong in the city; Cosmote has the broadest reach and edges ahead for the mountain and beach day trips
| Area | Best network | What to expect |
|---|---|---|
| Waterfront and White Tower | All networks | Dense 5G along the seafront promenade and the landmark; every network is fast. |
| Centre and Ladadika | All networks | Strong 5G across the centre and the old warehouse nightlife district. |
| Ano Poli (upper town) | All networks | Good coverage up the steep Byzantine old town with its views. |
| New metro | All networks | Continuous 5G underground on the recently opened metro line. |
| Olympus, Halkidiki and countryside | Cosmote | Cosmote holds steadiest on the routes to the mountain and the beaches. |
Where to stay and connect in Thessaloniki
Centre and the waterfront
The default base along the seafront and the squares, sights on foot. Coverage is dense and fast, so streaming and calls are no problem from a hotel here.
Ladadika
The lively old district of restaurants and bars near the port. Strong 5G across the busy lanes.
Ano Poli
The atmospheric Byzantine upper town of churches and views. Good coverage on the steep streets.
Valaoritou
The trendy nightlife and creative quarter. Reliable coverage and a youthful base.
Staying online while you move
On the new metro and the buses you keep a continuous 5G signal across the city, so you can navigate, message and stream throughout your ride. The waterfront promenade is fully covered for the famous evening stroll. The only stretch where coverage thins is on day trips out of Thessaloniki: to Mount Olympus, the three peninsulas of Halkidiki or the Macedonian countryside, Cosmote is the steadier network. Download offline maps for any mountain or beach excursion.
How much data in Thessaloniki
Thessaloniki is comfortable on data for a city stay. You will lean on maps, the transport app, translation and social. Budget 5 to 7 GB for a few days, more if you stream or tether a laptop. Coverage is reliable in town, so you rarely ration. Save offline maps for Olympus and Halkidiki, where signal thins on the mountain and between beach resorts.
Apps worth having in Thessaloniki
| App | Why it helps here |
|---|---|
| OASTH / metro | Live bus and new metro times and tickets for Thessaloniki. Runs on data and saves working out the network. |
| Bolt / FreeNow | Ride-hailing and taxis across Thessaloniki, useful late at night. Set up and verify your account before you travel. |
| Hellenic Train | Book and store rail tickets for onward travel. The QR ticket lives in the app, so you need data to retrieve it. |
| Google Maps offline | Download Thessaloniki and the region. Essential before heading to Olympus or Halkidiki where signal thins. |
| The standard way hotels, guides and restaurants confirm bookings in Greece, often faster than email. |
Practical data tips for Thessaloniki
- Install and activate your eSIM before you fly so you land connected and can check the metro straight away.
- For the city, do not overthink the network: all three Greek operators are excellent across central Thessaloniki.
- For Mount Olympus and Halkidiki, an eSIM that uses Cosmote gives the steadiest coverage in the mountains and on the coast.
- An EU eSIM covers Greece; confirm it includes the islands if you plan to island-hop from here.
Thessaloniki eSIM FAQ
Is there good mobile coverage in Thessaloniki?
Yes, excellent. Central Thessaloniki has dense, fast 5G on all three operators, Cosmote, Vodafone and Nova, including on the new metro. For a city stay any network performs very well.
Which network is best in Thessaloniki?
In the city all three are excellent. Cosmote has the broadest reach, so it holds signal best for day trips to Olympus, Halkidiki and the countryside.
Is there 5G in Thessaloniki?
Yes. 5G covers the waterfront, the centre, the upper town and the new metro on the major operators, with strong speeds across the city.
Does my eSIM work on the new metro?
Yes. The recently opened metro carries continuous 5G underground, so you can navigate, message and stream throughout your journey.
Will I have signal at Mount Olympus or in Halkidiki?
Mostly on the main roads and in the resorts, and best on Cosmote. The mountain and quieter beaches thin out, so Cosmote is steadier and offline maps help.
How much data do I need in Thessaloniki?
Budget 5 to 7 GB for a few days, since you will use maps, transport, translation and social. Add more if you stream video or tether a laptop for work.
Planning your Greece trip?
See the full Greece eSIM guide: operators, coverage, real prices and the honest verdict.