The site that tells you when not to buy.
eSIMCruise.deals is an independent comparison engine for cruise and ferry eSIM plans. We track 59 providers, we sell none of them, and we will tell you to buy nothing at all when that is the right answer. We are part of the same family as Roamsonar.com and esimadvice.com.
eSIMCruise.deals compares cruise and ferry eSIM plans against what they actually cover once the ship leaves port. We are an independent editorial team, we do not sell eSIMs, and we are funded entirely by affiliate commission — disclosed on every page that carries a link. Our flagship partner is GigSky; our “Cheapest” ranking ignores that partnership and sorts on price alone. We sit alongside two sister sites, Roamsonar.com and esimadvice.com, which cover travel connectivity more broadly; this site is the one that lives at sea.
- Providers tracked
- 59
- Work at sea
- 7 of them
- Ships named on provider lists
- 186
- Prices
- Dated on every page
Why does eSIMCruise.deals exist?
Because the cruise eSIM market has a structural lie in it, and almost nobody who sells into it says so. Ordinary travel eSIMs stop working roughly twelve nautical miles from land. That is the reach of a shore transmitter, not a policy anyone can change, and it means the plan that worked perfectly on the drive to the port goes silent an hour after the ship sails.
Only a handful of providers sell a genuine maritime product — one that connects to the ship’s own cellular network rather than to a mast on the coast. Everything else is a land plan, and several of those are branded “cruise” anyway. A comparison site that ranks all of them on price per gigabyte, as most do, is ranking things that do not do the same job. We started this site to draw that line clearly on every page: works at sea, works in port, or works on a ferry — and never to let a cheaper land plan outrank a maritime one for a sea-day question.
The second reason is the ship’s own Wi-Fi. It is priced per device per day, typically between $16 and $40, and it is the alternative every eSIM on this site has to beat. We publish the day rate for every major line and do the arithmetic for a week, for one device and for two, because that is the number a real purchase decision turns on. Start with whether an eSIM works at sea at all, then the ranking.
Who is behind eSIMCruise.deals?
A small, independent editorial team that researches and maintains travel-connectivity comparison sites. eSIMCruise.deals is the maritime one. Its sister sites are Roamsonar.com, which covers travel connectivity and roaming more broadly, and esimadvice.com, a general travel eSIM comparison. The three share an approach and an editorial standard; they do not share a plan catalogue, and nothing on this site is copied from either of them.
Our work is desk research, and we say so plainly. We read provider documentation, published vessel lists, fair-use terms and coverage pages, we re-check prices on a rolling schedule, and we turn that into a straight answer about whether a specific plan works on a specific ship. We are not a testing lab with a berth on 290 cruise ships; nobody is. Where a claim comes from a provider’s marketing rather than a verifiable figure, the page says which. How we test and rank sets out the method in full.
We do not publish invented reviewer personas, and no provider reviews our copy before it goes live. If you want to correct something, the contact page explains what to send; corrections with a source are usually live within a day or two.
How does eSIMCruise.deals make money?
Affiliate commission, and nothing else. When you click a “Get deal” or “Use code” button and then buy, the provider pays us a percentage of the sale. You pay the same price or less — many of our links carry a discount code that beats going direct. We do not sell eSIMs, listings, links or rankings, and we run no display advertising.
The relationship worth naming is the biggest one. GigSky is our flagship partner. We hold an exclusive 10% code for it, it is promoted first in plan listings, and we earn on every GigSky sale. That is disclosed here, on the methodology page, on the affiliate disclosure and beside the recommendation itself. The guardrails that go with it:
- The “Cheapest” ranking ignores partnership. It sorts on effective price per gigabyte and nothing else, and it regularly puts a rival above GigSky.
- Every GigSky recommendation names its weaknesses. It is not the cheapest per gigabyte at sea; the page that promotes it says so in the same breath.
- Coverage labels come from product behaviour. A partner whose plan is port-only is labelled port-only. Nothing about the label is negotiable.
- We recommend buying nothing when that is true. On a port-dense Mediterranean week, or a line that includes Wi-Fi in the fare, the honest answer pays us nothing and we give it anyway.
The full list of providers we may earn from, and how a click is tracked, is on the affiliate disclosure.
The charts we sail by
Four rules that decide what appears on a page and in what order. They are the same on every page of this site.
- A plan is labelled by where it works, not by what it is called.
- Works at sea, ports and land only, or ferry — applied from the product’s behaviour. A “cruise” label on a land plan does not earn the at-sea badge, and the difference is stated on every cruise-line page.
- Value is effective cost per gigabyte, computed the same way for everyone.
- Unlimited plans are imputed at 20 GB per 30 days, pro-rated by validity. Free trials and non-dollar prices are excluded rather than converted. A plan that does not work at sea never outranks one that does for a sea-day question.
- Every price carries the date we confirmed it.
- Prices change without notice and coupon codes expire. A figure without a date is a guess dressed as a fact, so no figure on this site is published without one.
- The ship’s own Wi-Fi is always the benchmark.
- Every plan is judged against what the line charges per device per day. Where the ship wins — and on some itineraries it does — the page says so. The same rule applies to ferry crossings.
What we log, and what we admit
A comparison site is only as good as its corrections. Every page shows the date its figures were last confirmed, and when a price, a coupon or a coverage claim is found to be wrong we change the page and re-date it rather than quietly leaving the old number to disappoint the next reader.
What we admit: most of what we know is read, not measured. We know which maritime network a provider resells because the provider publishes it; we know which ships are on a list because the list is public. What we cannot do is stand on every deck and test. That is why every GigSky page points at its free 100 MB trial — the one test that actually settles whether your hull connects — and why we would rather say “unconfirmed” than round a guess up to a fact.
Every one of the 59 providers has its own page stating exactly what it does and does not cover, including the 52 that sell nothing usable at sea.
Who is this site not for?
We would rather send you to the right place than keep you on the wrong one.
- Land-only travellers. If your trip has no sea days, a general travel eSIM comparison serves you better; esimadvice.com is built for exactly that.
- Anyone wanting a roaming-plan comparison across carriers. That broader connectivity research lives on Roamsonar.com.
- People who want us to say every plan is great. Several of the providers listed here have no maritime product at all, and their pages say so.
- Crew and offshore workers. Rigs, survey and support vessels run different networks on different contracts — the offshore guide covers that world separately.
About this site
01Is eSIMCruise.deals independent?+
Yes. We are not owned by, invested in by, or paid a retainer by any eSIM provider or cruise line. Our income is affiliate commission on sales that start with a click here, and the partner that pays us most is named on every page that promotes it.
02Do you sell eSIMs?+
No. Every purchase happens on the provider’s own site. We compare, we recommend, and we link; we never hold your payment details and we never see your order.
03What are Roamsonar.com and esimadvice.com?+
Sister sites run by the same editorial team. Roamsonar.com covers travel connectivity and roaming across carriers and regions; esimadvice.com is a general travel eSIM comparison. eSIMCruise.deals is the maritime specialist of the three. They share an editorial standard, not a catalogue.
04How do you decide what is “best”?+
By where the plan works first and what it costs second. For a sea-day question, only plans that connect to a ship’s maritime network are ranked at all; among those, value is effective price per gigabyte with unlimited plans imputed at 20 GB per 30 days. The full method is on the how-we-test page.
05Why is GigSky recommended so often?+
Two reasons, stated together. It has the widest published ship list in the market and the only free trial, which is the one test that settles coverage before you pay. It is also our highest-earning partner. The “Cheapest” ranking ignores that relationship entirely, and every GigSky page names the rivals that beat it on price.
06How do I report an error?+
Use the contact page and include a source — a screenshot of a price, a provider’s coverage page, a checkout that rejected a code. Corrections with evidence are usually live within a day or two, and the page will show the new confirmation date.
Get in touch
Corrections are the most valuable thing you can send us. Price changes, expired codes, a ship where a plan did or did not connect — the contact page says what to include and what to expect back.