Our Testing in Antigua and Barbuda
We evaluated eSIM options for Antigua and Barbuda using provider plan data and FLOW's network specifications. 1 carrier network accept eSIM roaming connections in Antigua and Barbuda: FLOW. 6 plans from 5 providers form the basis of our comparison. Pricing starts at $7.47/GB on 4G LTE.
FLOW is the sole eSIM-accepting carrier in Antigua and Barbuda. All five providers route through this single network, which means coverage depends entirely on FLOW's infrastructure.
The pricing ladder spans from 1GB at $10.98 ($10.98/GB) to 20GB at $164.45 ($8.22/GB). Best per-GB value sits at 10GB for $74.66 ($7.47/GB), our recommended tier for most Antigua and Barbuda 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 4G LTE speed until the data cap is reached, with no mid-plan throttling.
Network coverage in Antigua and Barbuda concentrates around urban centers and major transport routes. FLOW provides the most consistent signal for travel eSIM users.
Our editorial verdict places HelloRoam first for Antigua and Barbuda (9.5/10), followed by Airalo (9.3/10). These scores reflect Antigua and Barbuda-specific conditions: FLOW routing, 6 available plans, and 4G LTE 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 Antigua and Barbuda 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 Antigua and Barbuda 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 Antigua and Barbuda: Single-carrier markets like Antigua and Barbuda receive a ceiling of 4.0/5 on Coverage, since no failover redundancy exists. Unlimited plan availability in Antigua and Barbuda 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 Antigua and Barbuda 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 Antigua and Barbuda.
Antigua and Barbuda Network Landscape
Antigua and Barbuda has 1 mobile network: FLOW (4G). FLOW delivers the strongest coverage combination. All 5 providers route through these carriers.
Carrier Partnerships
Antigua and Barbuda operates 1 mobile network: FLOW (4G). 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 4G LTE 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 Antigua and Barbuda.
All five providers converge on FLOW for Antigua and Barbuda. The routing uniformity means speed and coverage scores reflect FLOW's infrastructure quality rather than provider-specific carrier agreements. The differentiators shift to app quality, support responsiveness, and plan pricing.
Review Timeline
Plans and pricing for Antigua and Barbuda were last verified in May 2026. All 6 plans confirmed active on FLOW's 4G LTE network. Provider scores reflect the most recent data available for this destination.
Antigua and Barbuda rankings update on a quarterly cycle. Plan pricing is checked monthly against provider websites. Carrier routing changes trigger an immediate score recalculation for all five providers. Network changes in FLOW's Antigua and Barbuda infrastructure are tracked through industry sources.
Best