We’ve lived in Orient Bay for 25 years. We don’t use an eSIM ourselves — we have a local SIM. But we’ve watched enough tourists land at Princess Juliana with no signal, or lose coverage the moment they cross from the Dutch side to the French side, to know exactly what the problem is.
St Martin is two countries on one island. Two networks, two infrastructures. Most eSIMs cover one side well and drop on the other. The ones below cover both — which on this island makes all the difference.
Holafly is the provider that performs best for travelers who want unlimited data, simple setup, and strong coverage both on the Dutch and French sides.
Holafly offers specific eSIMs for each side of the island:
Airalo is perfect for travelers who want a cheaper alternative, with small to medium data plans that still work well across the island.
What makes Airalo interesting?
Their unlimited data model is extremely popular with US and Canadian travelers who rely on navigation, WhatsApp, Instagram, and Google Maps throughout their trip.
For travelers on a budget or those staying only a few days, it’s the perfect match.
One last thing — buy your eSIM before you land. Not at the airport, not when you’re already on the island wondering why Google Maps isn’t loading. Two minutes online before you leave, and you step off the plane connected.
That’s the only travel tip that matters here.
Most modern smartphones are eSIM-compatible. Activation takes less than one minute:
No physical store. No SIM swap. No technical knowledge needed. For travelers, the eSIM has become the new standard.
The important things are:
No. You keep your SIM card. The eSIM just adds a data plan to your phone.
Yes. But coverage is slightly stronger when you choose the plan designed for the side you’re staying on (Dutch or French).
Holafly = unlimited data + maximum comfort
Airalo = cheaper + small packages
Yes. That’s exactly what most travelers use it for, and both providers perform well for navigation and messaging.
If your trip includes St Barth, Anguilla, Saba or St Eustatius, both Holafly and Airalo offer Caribbean regional eSIMs that cover multiple islands in one plan.
This is the most practical choice for island hopping.
