Cayman Islands eSIM, SIM Cards,
and Roaming: How to Get Data

The short answer

• Easiest option, a travel eSIM: buy it online before you fly (Airalo, Holafly, or Digicel's or Flow's own), activate on landing, no store visit. Data only, so you keep your home number. From around US$20 for a week.
• For a local Cayman number, a physical SIM: a Flow or Digicel prepaid SIM, but it means an in-person purchase with your passport. Best if you are staying a while or want cheap high-data bundles.
• Roaming keeps your own number with zero setup, but the Cayman Islands is not in the usual free North America zones, so US day passes run about US$10 to US$12.
• Two networks: Flow and Digicel. Grand Cayman has strong 4G/LTE and Flow has 5G in George Town and Seven Mile Beach. The Sister Islands are patchier.
• Quick pick: short trip, a travel eSIM; moving here, a local SIM for the number.

Your three options at a glance

Option 1: A travel eSIM (the easiest way in)

For most visitors, a travel eSIM is the simplest way to get online, because there is no physical transaction: you buy the plan online before you fly, and it activates the moment you land, with no store visit and no ID registration. Providers that sell Cayman Islands plans include Airalo, Holafly, aloSIM, Nomad, and Ubigi, and most run on the local Flow network. Airalo, for example, sells unlimited-data Cayman plans from around US$20.50 for 3 days to US$99 for 30 days. Prices change, so check the live rate when you buy.

The trade-off is that a travel eSIM is data only. You keep your home number for calls and texts but do not get a Cayman number. If you would rather buy from a local carrier, both Digicel and Flow offer their own eSIM, and they differ. Digicel's are data-only eSIM plans (CI$30 and CI$40, valid 30 days across the Caribbean region), so like a travel eSIM they carry no local number. Flow's 5-day prepaid eSIM (CI$15) is different: alongside 3GB of data it includes 75 local minutes and unlimited local texts and calls to Flow numbers. Either way, your phone needs to support eSIM (most recent iPhones and flagship Android phones do) and be unlocked.

Option 2: A local SIM, if you want a Cayman number

A physical SIM is the step up when you want a local Cayman phone number, which matters if you are staying a while. The catch is that it needs an in-person purchase. The Cayman Islands has two mobile networks, Flow (the Cable and Wireless brand, formerly LIME) and Digicel. Neither markets a special tourist SIM; you buy a standard prepaid SIM and add a data bundle.

Digicel's prepaid data bundles run from small one-day passes up to large monthly bundles (for example, an 18GB, 10-day bundle for around CI$28.90, or a 45GB, 30-day bundle for around CI$69.90). Flow's prepaid Combo bundles pair data with a local-minutes allowance plus unlimited local texts and unlimited calls to other Flow numbers: 1GB for 2 days at CI$7.50 (25 minutes), 3GB for 5 days at CI$15 (75 minutes), 7GB for 7 days at CI$20 (120 minutes), and 8GB for 30 days at CI$62 (400 minutes). Flow also sells data-only bundles: 500MB for 1 day at CI$3.50, 3GB for 30 days at CI$30, and 18GB for 30 days at CI$63. These are all for a physical SIM bought in a Flow store or a retail shop. Prices change, so check the carrier's site for the current bundle.

To buy, bring your passport, as photo ID is required to register a prepaid SIM. There is no SIM stand at the airport, so you buy in town at Flow and Digicel stores in George Town, Camana Bay, and along Seven Mile Beach, plus some supermarkets and gas stations. The airport does have free WiFi, so if you want to be connected before you leave the terminal, buy a travel eSIM online (see Option 1 above). If you are moving here, start on prepaid for flexibility, then switch to a postpaid plan once you have proof of address (postpaid needs ID, proof of address, and a deposit). A local number becomes effectively necessary for banking, deliveries, and two-factor logins.

Option 3: Roam on your home carrier

The zero-effort choice is to keep your own SIM and roam. It works the moment you land and you keep your own number, but the Cayman Islands is a chargeable roaming destination, not part of the free North America or roam-like-home zones that cover the US, Canada, and Mexico on many plans.

• US carriers: expect a daily pass. Verizon TravelPass is about US$10 a day and the AT&T International Day Pass is about US$12 a day, both billing your home plan's allowances while you travel. T-Mobile includes the Cayman Islands in international roaming, but on many plans that means data throttled to slow 2G speeds unless you add a faster international pass.
• Canadian carriers: Rogers added the Caribbean, including the Cayman Islands, to its Roam Like Home coverage, so many Canadian plans now cover Cayman at a daily rate of around CA$16. Bell and Telus offer similar day passes. Check that Cayman is on your plan's list.
• UK carriers: coverage is plan and date dependent. The Cayman Islands appears on some Vodafone and Three roaming lists but not others, and EE typically treats it as a chargeable non-EU destination. Confirm with your own carrier before you fly.

Roaming makes sense for a stay of a day or two, or when you simply do not want to change anything. For anything longer, an eSIM or a local SIM is usually cheaper.

Coverage: Grand Cayman and the Sister Islands

On Grand Cayman, coverage is good. Flow reports roughly 98% LTE coverage across the island and has run 5G in George Town and parts of Seven Mile Beach since June 2024. Digicel also provides solid 4G/LTE island-wide. Data works well across the tourist and residential areas, and reaches several miles offshore for boat trips.

On the Sister Islands, set your expectations lower. Cayman Brac has reasonable coverage around its main communities, while Little Cayman is limited and patchy, with dead zones. If you are travelling to the Sister Islands, do not rely on a constant signal.

Which should you choose?

For a one-week visit: a travel eSIM is usually the easiest and cheapest way to get online, and you keep your home number. Buy it before you fly. If you want a local number or plan to use a lot of data, a local Digicel or Flow prepaid SIM is the better value.

For a move or a long stay: get a local SIM and a Cayman number. Start on prepaid, then move to a postpaid plan once you are settled and have proof of address. A local number is effectively required for daily life here, from bank logins to deliveries.

Quick answers