eSIM for Saint Barthélemy
Saint Barthélemy is small, French and expensive, and almost nobody arrives directly. You land at Princess Juliana on Sint Maarten, then take a ten-minute hop on a twin-engine plane into Gustaf III, or the ferry across to Gustavia. Either way you need data the moment you land on the first island, because the connection is tight, the plane is small, and changes get sent by WhatsApp or email rather than announced at a gate.
Once you are on the island, the phone stays busy. There is no ride-hailing, no train and no real bus network. You rent a Mini Moke or a small 4x4, navigate hairpin roads to Saline and Gouverneur by map, book a table at a beach club days ahead, and confirm a boat charter or a taxi by message. Villa check-in details, gate codes and grocery pre-orders all arrive on your phone before you get there.
A FairSIM eSIM roams onto Free, Digicel or TelCell, all 4G LTE. Install it over Wi-Fi at home, switch the line on when you land, and you are online for the drive out of the airport. One rule to plan around: Gustaf III has no night operations, so the last flights leave around sunset. Miss the afternoon connection and you sleep on Sint Maarten, which is exactly the moment you want working data to rebook a room.
Saint Barthélemy eSIM plans
Wholesale rates in US dollars, with nothing added at checkout. Buy in the FairSIM app and the plan is on your phone in seconds.
How long is your trip?
All plans. Pick a trip length to narrow the list.
Coverage in Saint Barthélemy
- 4G LTE
- 5G
- FreeThe Iliad/Free network in the French Antilles, carrying 2G, 3G and 4G. Covers Gustavia, Saint-Jean and the main roads.
- DigicelListed as Digicel Antilles Françaises Guyane, the Caribbean operator's French Antilles footprint, with 2G, 3G and 4G.
- Digicel AntillesThe second Digicel listing on the coverage sheet for the wider Antilles, also 2G, 3G and 4G. Your phone treats it as another Digicel option.
- TelCellThe Sint Maarten based operator (Telcell N.V.), 4G only. Useful on the neighbouring island and on the northern side of the channel.
Typical speed: 4G is comfortable for maps, messaging, streaming and video calls in Gustavia, Saint-Jean, Lorient and Flamands. No verified median speed figure is published for the island, so expect ordinary LTE rather than headline numbers.
Coverage follows the built-up parts of the island and the main roads. Expect weak spots in the steep valleys, at the far end of the Colombier trail, inside thick-walled villas and on the water between Saint Barthélemy and Sint Maarten.
How much data do you need in Saint Barthélemy?
It depends on how you travel. Find your trip below, then pick the plan that matches. You can always top up in the app.
Villa week
A rented villa with a car, a cook some nights and beaches the rest.
Why data matters: Gate codes and check-in instructions by message, Google Maps on unmarked roads, grocery orders, restaurant bookings and photos to family.
- 7 days
- 5 GB
- 14 days
- 10 GB
- 30 days
- 20 GB
Hotel or honeymoon stay
Four or five nights in Flamands, Saint-Jean or Lorient.
Why data matters: Hotel Wi-Fi is fine at the room, but you want your own line for the drive, the beach club and video calls home.
- 7 days
- 3 GB
- 14 days
- 5 GB
- 30 days
- 10 GB
Yacht and charter trip
Gustavia as a base, with day sails to Colombier and Île Fourchue.
Why data matters: Crew coordination on WhatsApp, weather and wind apps before each leg, and marine charts cached while you still have signal in the harbour.
- 7 days
- 5 GB
- 14 days
- 10 GB
- 30 days
- 20 GB
Day trip from Sint Maarten
The ferry or a morning Winair hop, back by late afternoon.
Why data matters: Ferry and flight times shift with the sea and the light. You need data to track the return leg and rebook if it slips.
- 7 days
- 3 GB
- 14 days
- 5 GB
- 30 days
- 10 GB
Working remotely from the island
A few weeks of laptop mornings and afternoons on the sand.
Why data matters: Calls, file uploads and Personal Hotspot when the villa line drops. A larger bucket or an unlimited plan is the sane choice.
- 7 days
- 10 GB
- 14 days
- 20 GB
- 30 days
- Unlimited
How FairSIM works
- 1
Pick a destination and a plan
Choose the country or region and the data you need. The price you see is the price you pay.
- 2
Tap install
On iPhone (iOS 17.4+) the eSIM installs in one tap, no QR code. Do it at home while you still have Wi-Fi.
- 3
Land and connect
Turn on data roaming for the FairSIM line when you arrive. Your plan starts when it first connects.
Connectivity tips for Saint Barthélemy
Install and test the eSIM at home over Wi-Fi, then turn the line and data roaming on before your onward hop. You want data before the small plane, not after.
Download Google Maps for the island offline. The valleys and the road up to Lurin drop to nothing.
Gustaf III has no night operations, so the last flights go around sunset. Build a buffer on arrival day and keep the airline's number saved.
Book cars and taxis in advance for December to April. There is no ride-hailing, and the rental fleet sells out around the holidays.
Prices are in euros and card payment is normal, but carry some cash for beach shacks and taxis, and expect a rounded rate if you pay in dollars.
During hurricane season, keep Météo-France alerts on and your data plan topped up; that is how flight changes and warnings reach you.
Keep your home SIM active for SMS codes with its data roaming switched off, and let the FairSIM line carry all data.
Heading on to Anguilla or Saint Kitts next? Buy that plan in the same app before you leave the villa Wi-Fi.
Apps you will actually use
- WhatsApp how the island actually communicates: villa managers, taxi drivers, boat captains and restaurants.
- Google Maps reliable for the road network; download the island offline before you leave the airport, the valleys drop signal.
- Winair the main carrier for the SXM to SBH hop; check-in, delays and standby seats.
- Great Bay Express ferry tickets and schedules between Sint Maarten and Gustavia.
- Windy wind and swell before a boat day; the channel crossing can be rough.
- Météo-France Antilles official forecasts and cyclone alerts during the June to November season.
- Navionics marine charts and anchorages if you are on a boat; cache the area on data first.
- Google Translate menus, pharmacy labels and official notices in French.
There is no Uber or other ride-hailing on Saint Barthélemy. Taxis are dispatched by phone or found at the stands in Gustavia and at the airport, with fares set by zone and higher rates at night and on Sundays. Book a car rental well before a high-season trip, and expect the pickup to be confirmed by email or WhatsApp rather than in an app.
Can you rely on free Wi-Fi?
Villas, hotels and the restaurants in Gustavia and Saint-Jean almost all have Wi-Fi, and in a good villa it is fast enough for calls. Quality is uneven: the island is served through submarine links, and thick stone or concrete walls kill the signal two rooms away, so a villa router can look fine at the desk and useless by the pool. Beaches, the coastal roads, the Colombier trail and the boats have nothing. Treat Wi-Fi as a bonus for big uploads and keep the eSIM as the line you actually navigate and message on.
Local SIM card or eSIM in Saint Barthélemy?
There is no phone shop at Gustaf III airport and no arrivals SIM counter. Prepaid French Antilles SIMs are sold on Sint Maarten and in Gustavia's shops and supermarkets in limited quantity, and French rules mean registration with ID. For a three or five-night stay you would spend part of your first afternoon looking for a top-up, in a place where an afternoon is expensive. Local prepaid also tends to be priced for residents on monthly cycles rather than for a short visit.
A FairSIM eSIM is installed before you fly and switched on when you land, on Free, Digicel or TelCell, the same towers a local prepaid card would use. It keeps your home number reachable for bank codes on the primary line, and there is nothing to register at a counter. Three plan sizes are on sale for this destination in the app, with the live price shown there.
Good to know before you land in Saint Barthélemy
- Currency
- Euro (EUR); US dollars are widely accepted, usually at a rounded shop rate
- Plug type
- Types C and E (European two-pin)
- Voltage
- 220 V, 50 Hz
- Emergency number
- 112 for all services; 18 for fire and rescue, 15 for medical
- Language
- French; English is spoken across hotels, restaurants and charter crews
- Time zone
- UTC-4, no daylight saving
- Capital
- Gustavia
Saint Barthélemy eSIM questions
Does an eSIM work in Saint Barthélemy?
Yes. An unlocked eSIM phone connects to Free, Digicel or TelCell 4G. On iPhone that means XS, XR or newer, and iOS 17.4 or later for the one-tap install.
Which network will my Saint Barthélemy eSIM use?
Free, Digicel or TelCell, depending on the plan and on what your phone finds strongest. The app shows the networks for each plan.
Is there 5G on Saint Barthélemy?
Not on the networks FairSIM uses here. All of them are listed as 4G LTE, with 3G and 2G fallback, which is enough for maps, streaming and video calls.
Can I buy a SIM at the airport in Saint Barthélemy?
No. Gustaf III is a tiny terminal with no operator counter. Prepaid cards turn up in Gustavia shops and on Sint Maarten, and French registration rules apply. Installing an eSIM before you fly avoids the errand.
Will the same plan cover Sint Maarten, where I connect?
Coverage is defined per plan, so check the destination list in the app for the plan you pick. If Sint Maarten is not included, add a separate plan for it, since most trips route through there.
Does my EU plan roam free in Saint Barthélemy?
Not automatically. The island is a French overseas collectivity outside the EU roam-like-at-home zone. Some French tariffs include it in a DOM zone, most other EU plans do not. Check before you rely on it.
Can I use Personal Hotspot?
Yes. Every FairSIM plan supports Personal Hotspot, with no separate cap, which is useful when the villa Wi-Fi drops.
How much data do I need for a week on Saint Barthélemy?
A beach and restaurant week runs about 3 to 5 GB. Add more if you stream in the evenings, work from the villa or share a hotspot with a laptop.
When should I install the eSIM?
Before you leave home, over Wi-Fi. Validity typically starts at the first connection to a network in the covered area, so install early and switch the line on when you land.
What is an eSIM?
A SIM card built into your phone. Instead of a plastic chip, you download a profile. Every iPhone since the XS has one next to the physical SIM slot, so your home number stays put while FairSIM supplies the data.
Is my phone compatible?
FairSIM works with eSIM-compatible, carrier-unlocked iPhones: the XS, XR and everything newer, on iOS 17.4 or later for the one-tap install with no QR code. iPhones bought in mainland China do not support eSIM at all, even when unlocked. Not sure yours is unlocked? Check Settings, General, About, Carrier Lock, or ask your carrier. The full list is on the How it works page.
When should I install my eSIM?
Before you travel, while you still have Wi-Fi. Installing does not start your plan; the validity typically starts when the eSIM first connects to a network at your destination.
Do FairSIM eSIMs come with a phone number?
No. FairSIM eSIMs are data-only by design, which keeps costs low. For calls and texts, your physical SIM stays active so you keep your existing number, and WhatsApp, FaceTime and iMessage work over data.
Traveling beyond Saint Barthélemy?
Get your Saint Barthélemy eSIM in the app
Install before you fly, track your data live, and top up in seconds if you need more.
iPhone XS or later · iOS 17.4+ for one-tap install
