Our Testing in Cayman Islands
We evaluated eSIM options for Cayman Islands using provider plan data and FLOW's network specifications. 1 carrier network accept eSIM roaming connections in Cayman Islands: FLOW. 6 plans from 5 providers form the basis of our comparison. Pricing starts at $6.31/GB on 5G.
FLOW is the sole eSIM-accepting carrier in Cayman Islands. All five providers route through this single network, which means coverage depends entirely on FLOW's infrastructure.
The pricing ladder spans from 1GB at $10.18 ($10.18/GB) to 20GB at $126.21 ($6.31/GB). Best per-GB value sits at 20GB for $126.21 ($6.31/GB), our recommended tier for most Cayman Islands travelers. Holafly adds an unlimited daily option at $18/day, which suits heavy data users on trips of 5+ days. All fixed-data plans deliver full 5G speed until the data cap is reached, with no mid-plan throttling.
FLOW's 5G coverage spans Cayman Islands's main population centers and tourist corridors. Rural coverage depends on FLOW's tower density in less populated areas.
HelloRoam earns the top position for Cayman Islands at 9.5/10, with Airalo close behind at 9.3/10. These scores reflect Cayman Islands-specific conditions: FLOW routing, 6 available plans, and 5G as the network standard. Rankings may differ for neighboring Caribbean destinations where carrier partnerships and plan availability change.
What We Tested
We ranked 6 eSIM plans from 5 providers for Cayman Islands across five dimensions: Coverage (25%), Pricing (25%), Speed (20%), App Quality (15%), Support (15%). Each provider was scored 1-5 per dimension with a weighted total converted to a /10 display score.
How We Scored
Scores for Cayman Islands use our standard weighted formula: Coverage (25%), Pricing (25%), Speed (20%), App quality (15%), and Support (15%). Each dimension receives a raw score from 1 to 5. The composite multiplies by 2 for a 0-10 display scale. Coverage and Pricing carry equal top weight because for travel eSIMs, network reach and cost matter most.
Country-specific adjustments for Cayman Islands: Single-carrier markets like Cayman Islands receive a ceiling of 4.0/5 on Coverage, since no failover redundancy exists. Unlimited plan availability in Cayman Islands adjusts the Pricing dimension to weight per-day unlimited rates alongside per-GB fixed rates. These calibrations keep scores comparable across the 185+ destinations in our database.
The scoring spread across 5 providers for Cayman Islands is 1.5 points (HelloRoam at 9.5/10 down to Nomad at 8.0/10). A spread under 1.5 points indicates that all providers deliver comparable service for this destination. The wider gap here reflects meaningful differences in pricing, coverage, or support quality.
Read our full testing methodology.
Speed scores use provider-reported network data. We have not independently measured download speeds in Cayman Islands.
Cayman Islands Network Landscape
Cayman Islands has 1 mobile network: FLOW (5G). FLOW delivers the strongest coverage combination. All 5 providers route through these carriers.
Carrier Partnerships
Cayman Islands operates 1 mobile network: FLOW (5G). FLOW serves as the primary routing partner for travel eSIMs in this market. All five ranked providers route exclusively through FLOW. Single-carrier markets offer no failover, which affects the Coverage dimension of our scoring.
FLOW's 5G infrastructure delivers speeds consistent with the Caribbean regional average for travel eSIM connections. Single-carrier coverage means no automatic failover. Coverage quality depends entirely on FLOW's tower infrastructure and geographic reach in Cayman Islands.
FLOW's 5G network handles all travel eSIM traffic in Cayman Islands. Provider differentiation comes from plan pricing ($6.31/GB entry), app features, and support channels rather than carrier routing choices.
Review Timeline
Plans and pricing for Cayman Islands were last verified in May 2026. All 6 plans confirmed active on FLOW's 5G network. Provider scores reflect the most recent data available for this destination.
We review Cayman Islands rankings quarterly and after any major network change (carrier merger, 5G rollout, new provider entry). Price updates are checked monthly. If FLOW launches a new network tier or a provider adjusts Cayman Islands plan pricing, scores are recalculated within 2 weeks.
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