Castries eSIM Data Plans
3 GB / 30 days
$23.20
Why travellers choose AeroSims
QR code by email in seconds
Validity starts on arrival, not at purchase
Connects to local partner networks
Need more? Buy another plan anytime
All plans & prices
| Plan | Validity (days) | Price (USD) | Per GB |
|---|---|---|---|
| 3 GB | 30 | $23.20 | $7.73 |
| 5 GB | 30 | $36.27 | $7.25 |
| 10 GB | 30 | $66.36 | $6.64 |
| 20 GB | 30 | $121.82 | $6.09 |
Delivered in secondsNo passport, no SIM swap24/7 support
Network & coverage
Stay connected in Castries
Your eSIM runs on FLOW across Castries, and it keeps working across Saint Lucia.
Where you will use it
Castries and Rodney BaySoufrière and the Pitonsthe east coastthe cruise pier
FLOW
4G coverage across Castries and on through Saint Lucia.
Choose your data
The plan that fits your trip
Fixed data, one payment: pick the size that matches how you travel in Castries.
A resort week
smallest planResort Wi-Fi plus data for the drives.
Two weeks
one step upThe whole island and boat trips.
MOST CHOSEN
Cruise stop
a larger planOne day ashore.
A wedding or honeymoon
unlimited fits betterPhotos and calls home all week.
Traveller's guide
Staying connected in Castries
A weak connection does not just feel slow: it wastes your plan. Pages half-load and reload, uploads restart, apps retry in the background. Sitting on a solid network is part of what makes a fixed plan last the whole trip.
In Castries the biggest single draw is the long transfer between the two ends of the island. Download the offline map before you fly and let the eSIM handle live traffic only.
The two Saint Lucian airports are at opposite ends of a mountainous island, and the transfer between them is the longest stretch of the trip.
What's included
Everything you need in Castries
One price, no meter
Bought once, and the trip carries no further cost.
Nothing burns before you land
Install it the day you book. It stays dormant until it first connects.
Need more data?
Often you can add data right on your personal eSIM page. If not, another package for the same destination arrives by email in seconds.
No counter, no queue
Nothing to collect at UVF / SLU.
Instant delivery
Your QR code arrives by email in seconds. No shipping, no wait.
Ready for local apps
Works with WhatsApp and Google Maps and everything else you use.
Device support
Works on your phone
Almost every phone from the last few years supports eSIM. Not sure? Dial *#06#. If an EID number appears, you're good to go.
iPhone
iPhone XS, XR and every model since.
Samsung Galaxy
Galaxy S20 and newer, Z Flip / Z Fold, Note 20.
Google Pixel
Pixel 3 and newer.
Other Android
Most modern flagships from Motorola, OnePlus, Oppo and more.
Why eSIM
AeroSims vs a local SIM vs roaming in Castries
| AeroSims eSIM | SIM at UVF / SLU | Roaming | |
|---|---|---|---|
| Ready when you land | After the queue | ||
| Passport / ID needed | None | Often required | None |
| Price known before you fly | Rarely | ||
| Keep your own number | |||
| Works across the rest of Saint Lucia |
How it works
Connected in 3 simple steps
1
Whenever you like
Scan the QR code at home over Wi-Fi. Nothing is used up.
2
On landing at UVF / SLU
Turn off flight mode.
3
Turn on data roaming
The step most people forget. Your home SIM stays in the phone for bank codes, with its data switched off.
FAQ
Questions, answered
Will the Castries eSIM work on my phone?
Any eSIM-capable, carrier-unlocked handset: iPhone XS and newer, Samsung Galaxy S20 and newer, Pixel 3 and newer. Dial *#06#; an EID number means yes.
How fast is the data in Castries?
4G where the local network provides it. Speed varies by area and time of day, as it does for everyone on the same network.
Do I need a passport or registration?
No. That requirement applies to physical SIM cards bought locally, not to this eSIM.
When does my plan start?
On the first connection to a local network, when you switch off flight mode at UVF / SLU. Not when you pay.
What happens when my data runs out?
Your connection simply pauses. No surprise bills, ever. While your eSIM is still valid, you can usually add more data to it on your personal eSIM page. You can also buy another package for the same destination. If that happens often, the unlimited plan is the cheaper answer.
Can I add data to an eSIM I already have?
Often, yes. While your package is running, your personal eSIM page shows whether more data can be added to it and lets you choose how much. The link is in your delivery email. If your package can't take more, another package for the same destination arrives by email in seconds and installs alongside the eSIM you already have.
Can I keep my normal number for calls and texts?
Yes. Keep the home line active for SMS codes with its data off, and let the eSIM carry the data.
Can I use it as a mobile hotspot in Castries?
Yes. Bear in mind a second device draws from the same plan.
Does it work outside Castries?
Yes, it is a Saint Lucia-wide plan.
Staying longer than a week?
Unlimited is billed per day and the daily rate falls the longer you stay. Same networks, no counting.
Ready to explore Castries?
Choose your plan above and get instant access, delivered to your inbox in seconds.
4G · instant delivery · 30-day guarantee
