Cayman IslandsのeSIMプラン

Cayman Islands plans compared: $37.68 for 5 GB on FLOW 5G

Cayman Islandsのおすすめトップ3

Cayman Islandsで利用可能な6件のeSIMプランを評価し、確認済み価格・ネットワーク通信範囲・データ追加購入の可否・アプリ品質を比較しました。 その中から5件が際立っていました。

HelloRoam

価格確認済み

￥5,727

5GB / 30日間

メリット： FLOWでのCayman Islands通信カバレッジ、全プランでテザリング対応、未開通eSIMは180日間返金可。 デメリット： 比較的新しいブランドで、Airaloよりコミュニティが小さい。

HelloRoamを見る詳細レビュー

Airalo

最も人気

未検証

メリット： 200カ国以上対応、チャージ可能、最大のコミュニティ。 デメリット： 一部ルートでは新興プロバイダーより割高で、サポートの応答時間にムラがある。

Airaloを見る詳細レビュー

Holafly

無制限プラン最強

未検証

メリット： 真の無制限データ、速度制限なし、24時間365日ライブチャットサポート。 デメリット： プレミアム価格で、1GBあたりの選択肢なし。

Holaflyを見る詳細レビュー

FLOW 5G: the one network a Cayman Islands eSIM roams on

FLOW is the one Cayman carrier open to international eSIM visitors, which is why HelloRoam roams on it from $10.18 for 1 GB across Grand Cayman, Cayman Brac and Little Cayman. FLOW, formerly Cable & Wireless, runs its fastest layer across Grand Cayman's West Bay, the Seven Mile Beach corridor and George Town centre. Cayman Brac receives 4G in the settlement areas.

Little Cayman holds limited 3G, which reflects an island of roughly 200 residents and minimal infrastructure.

通信範囲の分析

FLOW covers Grand Cayman's entire tourist corridor, from Seven Mile Beach north to West Bay and south to the East End. Owen Roberts International Airport sits inside that coverage, so a pre-installed profile registers in the arrivals hall. Rum Point, Stingray City and Bodden Town all hold signal.

Cayman Brac's Stake Bay area stays connected on 4G. Little Cayman's single resort strip has patchy 3G. Offshore signal is unreliable beyond 2 nautical miles from shore, so download charts before a boat day.

開通方法

Install your Cayman Islands eSIM QR code before departure and leave the line switched on. FLOW registers the profile on arrival at Owen Roberts International Airport (GCM) on Grand Cayman. Cayman Brac's Gerrard Smith Airport (CYB) registers the same profile.

No ID, no counter visit, no queue. iPhone XS or newer, Pixel 3a or newer, and Galaxy S20 or newer support eSIM, provided the device is carrier-unlocked.

データ通信の活用のコツ

Budget 400-500 MB per day for dive booking apps, navigation around Grand Cayman's one-way road system and WhatsApp with tour operators. Uploading dive photos runs 100-150 MB per session. A 30-minute video call to plan an excursion uses roughly 300 MB.

At $6.31/GB a Cayman e-sim rewards offline maps and capped video: download Grand Cayman before you fly and the 3 GB plan at $24.02 covers a normal week.

Cayman IslandsのeSIMプラン料金

Cayman Islands eSIM plans start at $10.18 for 1 GB over 7 days on FLOW 5G. The 3 GB 30-day plan costs $24.02 and 5 GB costs $37.68. The 10 GB plan runs $68.76 and 20 GB costs $126.21, which sets the floor rate of $6.31/GB.

A 2 GB per day option costs $18.00. Those rates sit well above the Caribbean average and track FLOW's cost of serving three small islands. For a week of diving and beach time the 3 GB plan at $24.02 is the practical pick, and Airalo lists 200 destinations against HelloRoam's 185, so its Cayman row is worth checking.

HelloRoam's 6 Cayman Islands plans on FLOW 5G from $10.18

Prices verified: 2026年5月22日

Questions about Cayman Islands eSIMs

プロバイダーレビュー

Cayman Islandsで利用可能なトップeSIMプロバイダーの詳細レビューをご覧ください。