eSIM for cruises: how to stay connected in port and at sea, and which plan covers your itinerary

Quick answer: how to stay connected on a cruise

• In port and near the coast: a travel eSIM connects to local networks, just like on land. This is where you use most of your data.
• At sea: no land network reaches you. Your options are the ship's Wi-Fi package or nothing at all.
• The ship's mobile network: keep your phone off it. Travel eSIMs do not include it, and on your home SIM it is billed as expensive maritime roaming.
• Mediterranean and Northern Europe: one Europe plan covers most ports, but check Monaco, Montenegro, Turkey and the Faroe Islands.
• Caribbean: the hardest region. Few plans cover a whole itinerary, so compare global plans or buy for the ports that matter most.

Port, coast or open sea: when your eSIM works

On a cruise, your phone moves between three situations, and each one needs a different setting:

How far out land networks reach depends on the coast and the masts, but on a typical sea day you lose the signal soon after leaving port. The eSIM's validity keeps running during that time, so choose a plan that lasts for the whole voyage, including your flights and any days before or after the cruise.

The ship's mobile network: why it is expensive and how to avoid it

Many cruise ships run their own mobile network on board, connected by satellite. Your phone may show it as a separate operator. Travel eSIMs do not include these maritime networks, so your eSIM simply will not connect. Your home SIM, however, can, and many carriers charge maritime roaming at rates far above normal roaming, for data, calls and sometimes even incoming calls.

To avoid surprises:

1. Switch off data roaming on your home SIM before you board. Your travel eSIM handles data in port.
2. On sea days, use airplane mode with Wi-Fi turned on if you buy the ship's internet, or turn off your home line in the SIM settings. That way no calls or messages go through the maritime network.
3. Do not select the ship's network manually if it appears in the network list.
4. In port, turn mobile data back on for the travel eSIM and check that it has connected to a local network.

Some eSIM providers sell special packages for specific cruise ships. We do not include them in our comparison, because they depend on the ship's network rather than on a country. Our guide Dual SIM with a travel eSIM shows where to find the settings for both lines.

Mediterranean, Northern Europe and Baltic cruises: one Europe plan, with gaps

European cruises are the easiest to cover. Most Europe plans in our database include the classic cruise countries:

• Western Mediterranean: more than nine in ten Europe plans cover Spain, Italy and Malta, and over eight in ten France. More than 4,700 plans from all 39 providers cover Spain, France, Italy and Malta together.
• Eastern Mediterranean: Greece and Croatia are in almost every Europe plan. Turkey is in about two thirds, Montenegro and Albania in only about a third.
• Monaco: the biggest gap. Only about 2 % of Europe plans include it, even though many Riviera cruises call there. Look for one of the global plans that lists it, or use ship Wi-Fi for that day.
• Norwegian fjords and Northern Europe: Norway, Iceland and the UK are in more than nine in ten Europe plans; the Faroe Islands in fewer than one in five.
• Baltic: more than nine in ten Europe plans cover Denmark, Sweden, Finland, Estonia and Germany together.

The table shows the cheapest Europe plan for each data amount, refreshed daily. Before you buy, compare your port list with the country list of the plan. Our Europe eSIM guide explains the differences between Europe plans, and our Turkey guide helps if your cruise ends in Istanbul.

Caribbean cruises: the hardest region for one eSIM

The Caribbean is a patchwork of small countries and territories, and travel eSIMs reflect that. Our database lists close to 900 Caribbean regional plans from 29 providers, but they differ widely in which islands they include:

• Often included: the Dominican Republic (about seven in ten Caribbean plans), Puerto Rico, Jamaica, the Cayman Islands, Barbados, Antigua and St Lucia (around six in ten).
• Often missing: the Bahamas and Curaçao (four in ten), Aruba and Sint Maarten (around a third), the US Virgin Islands (fewer than one in six) and Belize (none of the Caribbean plans).
• Mexico and the USA: only about four in ten Caribbean plans include them, which matters for cruises from Florida or with a stop in Cozumel.

As a result, very few plans cover a whole itinerary. For a typical Western Caribbean route with Mexico, Belize, Honduras, the Cayman Islands and Jamaica, we found fewer than 200 plans from 10 providers, all of them global plans. For the Eastern Caribbean with the Bahamas, Puerto Rico, the US Virgin Islands and Sint Maarten, it was around 200 plans from 9 providers. Southern Caribbean routes with Aruba, Curaçao, Barbados, St Lucia and Antigua are easier, with more than 300 plans from 18 providers.

Your options:

• A global plan that lists every port, if you need data on each stop.
• A Caribbean plan that covers most ports, and ship Wi-Fi or no data for the rest.
• Single-country plans for the one or two ports where you really need data, for example the Bahamas or the Cayman Islands.

On our Caribbean page you can open each regional plan and see its country list.

Alaska, Canada and New England

Cruises to Alaska or along the coast of New England and Canada need a plan that covers both the USA and Canada. That is easy: more than 3,400 plans from 38 providers in our database include both, most of them North America plans. Keep in mind that coverage between the towns along Alaska's Inside Passage is thin, so expect long stretches without signal even when the ship is close to land. Our North America page lists all plans for the region, and our USA eSIM guide covers the networks.

How much data do you need on a cruise?

Because you only use the eSIM in port and near the coast, a cruise needs less data than a land trip of the same length. As a rough guide for one person:

Make sure the validity covers the whole trip, from your flight to the port until you are home again. If you are unsure, pick a provider that allows top-ups. Typical values per activity are in our guide How much data do I need for travel?

Checklist before you board

1. List every port on your itinerary, including the departure and arrival ports.
2. Choose a plan whose country list covers the ports where you need data, with enough validity for the whole trip.
3. Install the eSIM at home over Wi-Fi; see our guides for iPhone and Android.
4. Switch off data roaming on your home SIM and decide whether to keep the home line on at sea.
5. Download offline maps and entertainment for sea days before you leave.
6. In each port, check that the eSIM has connected; if not, see eSIM not working abroad.