Sint Maarten · roaming cost calculator
Sint Maarten Roaming Price Check: Published Carrier Rates, Verified
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Sint Maarten eSIM options with verified pricing
Holafly's Sint Maarten plans include a 6-month refund policy for unused purchases. Coverage runs on TelCell (TelEm)'s 4G LTE network at $2.99/day — the industry's longest standard refund window.
Get eSIMHeavy data users in Sint Maarten should compare Airalo's 10GB TelCell (TelEm) plan at $1.60/GB against Holafly's unlimited tier. Airalo is cheaper under 7-8GB of daily usage.
Get eSIMSint Maarten travelers on Saily get TelCell (TelEm) 4G LTE plus NordVPN-grade security at $1.60/GB. Support is email-only with 12-24 hour response times; 30-day refund covers unused plans.
Get eSIMTelCell (TelEm) covers cities, transport hubs, and major tourist areas in Sint Maarten. Nomad routes through this network at $1.60/GB — remote rural coverage depends on TelCell (TelEm)'s infrastructure, not Nomad's.
Get eSIMCompare providers: Airalo vs Holafly · Airalo vs Saily · Airalo vs Nomad · Holafly vs Saily · Holafly vs Nomad · Saily vs Nomad
The full picture
Sint Maarten data roaming prices from US and UK carriers
Every major carrier's published Sint Maarten rate, side by side, with the eSIM winner highlighted.
| Carrier | Plan type | Daily | 7-day | Speed | Data limit |
|---|---|---|---|---|---|
| AT&T | International Day Pass | $10.00source | $70.00 | LTE | Plan data |
| Verizon | TravelPass | $10.00source | $70.00 | LTE | Plan data |
| T-Mobile | Magenta (high-speed add-on) | Free*source | $0–105 | 256kbps* | Throttled |
| Xfinity Mobile | International Pass | $10.00source | $70.00 | LTE | 200 MB/day |
| eSIM · Holafly | 1 GB · 7 days | — | $1.60 | LTE / 5G | 1 GB |
*T-Mobile includes data at 256kbps free; high-speed access is a $5–15/day add-on, shown here as a 7-day range.
* Xfinity Mobile International Pass: $10/day with 200 MB/day high-speed cap
Compare all carrier roaming plans to see how AT&T, Verizon, T-Mobile, Vodafone, and EE stack up against eSIM providers.
Pay-per-use cost audit
How much AT&T charges per hour in Sint Maarten without a plan
AT&T pay-per-use data in Sint Maarten costs $2.05/MB when no international day pass is active. At that rate, five common activities add up quickly.
5-minute FaceTime call (~75 MB): $154. 30-minute Zoom meeting (~450 MB): $922. 1 hour of Google Maps navigation (~50 MB): $102. Uploading 20 vacation photos (~200 MB): $410. 1 hour of YouTube (~500 MB): $1025. Combined, those five activities use roughly 1.3 GB — before background app refresh or iCloud sync adds anything. Rates checked June 2026. Source: AT&T international rate card.
Personalize your savings
How much will you save with an eSIM in Sint Maarten?
Adjust your trip length, carrier, and data habits to see your exact savings.
Network coverage
Local carrier network data for Sint Maarten
AT&T and Verizon connect to TelCell when you roam in Sint Maarten. An eSIM routes through the same TelCell network. Trace the data path: your phone, TelCell's tower, the internet. That path is identical for roaming and eSIM. Only the invoice at the end changes. Verizon charges $10/day for this access; Airalo charges $1.60/GB. TelCell's 4G LTE network covers Sint Maarten. AT&T roaming and travel eSIMs both connect to that same LTE signal. No speed difference. Only a price difference: $10/day versus $1.60/GB.
Pricing breakdown
Sint Maarten data pricing: carrier vs eSIM
How much does Sint Maarten roaming cost over 14 days? AT&T: $140. Verizon: $140. T-Mobile high-speed: $210. A 10GB eSIM on TelCell (TelEm): $16. The difference between the cheapest carrier option and the eSIM is $124 less than AT&T.
Each day AT&T connects you to TelCell (TelEm) in Sint Maarten costs $10. Buy a 10GB eSIM plan at $16 and that same daily access drops to $1.14/day. Over 14 days, the difference is $124.
eSIM pricing for Sint Maarten: . AT&T's 14-day roaming bill is $140 regardless of data consumed. Every eSIM tier undercuts that figure.
Trip cost breakdown
What Sint Maarten costs across three common trip types
Three common trip types to Sint Maarten and what each costs on AT&T vs a TelCell (TelEm) eSIM:
Weekend city break (3 days, 2GB): AT&T $30 · eSIM $3.20 · saves $26.80 (89%) 2-week family vacation (14 days, 15GB): AT&T $140 · eSIM $24 · saves $116 (83%) 1-month digital nomad (30 days, 50GB): AT&T $300 · eSIM $80 · saves $220 (73%)
AT&T charges $10/day whether you use 50 MB or 5 GB that day. eSIM plans charge for a fixed data block purchased once. At no point in any of the three scenarios does carrier roaming cost less. Rates checked June 2026.
Airport options
What to buy at Sint Maarten airports for data
SIM counters at Sint Maarten airports close overnight. If you land after 10 PM or before 6 AM, the kiosk may not be open. A 5GB eSIM at $8 activates on TelCell (TelEm)'s towers as soon as you disable airplane mode — it does not depend on airport operating hours.
Data planning
7-day Sint Maarten data budget breakdown
Social media browsing uses about 80 MB/hour. Two hours of Instagram or TikTok scrolling per day adds 160 MB. Stack that with maps and messaging and 1.5 GB per day is a fair estimate for Sint Maarten. Over 7 days you need 11GB.
At $8 for 7 days, the 5GB plan works out to $1.14/day. AT&T charges $10/day for the same network access on TelCell (TelEm). Both connect to the same towers. The billing model is different.
Connectivity
Sint Maarten hotel and cafe WiFi: what to expect
Good WiFi at hotels and restaurants throughout the island Cafe WiFi networks in Sint Maarten are open networks without encryption. They work for basic browsing, but avoid logging into banking or work apps on public networks. A travel eSIM on TelCell (TelEm) provides a private connection for any sensitive app you use while out.
Plan your data
What travelers use for data in Sint Maarten
AT&T's International Day Pass in Sint Maarten bundles voice, SMS, and data into $10/day. Most travelers use messaging apps for calls and need only a data plan. A data-only 5GB eSIM on TelCell (TelEm) costs $8 for 10 days — 92% less than AT&T's bundled rate.
Sint Maarten has two mobile operators: TelCell and Flow. When AT&T or Verizon customers roam here, their calls and data pass through these exact networks. A travel eSIM reaches TelCell or Flow directly at $1.60/GB — the service is identical; the roaming markup is not.
WiFi in Sint Maarten is available in hotels and cafes. An eSIM fills the gaps at $1.60/GB instead of AT&T's $10/day roaming charge. Local prices in Sint Maarten are in Netherlands Antillean Guilder (ANG) (ƒ), but eSIM plans are priced in USD, eliminating exchange rate uncertainty on your data costs.
Quick reference
Sint Maarten Travel Essentials
911
911 reaches police, fire, and ambulance in Sint Maarten. Save the number before you arrive — do not rely on memory in an emergency. 911 works from any phone, including a travel eSIM with no local number.
Type A/B
US plugs (Type A flat two-prong and Type B three-prong) fit Sint Maarten's outlets directly. No adapter is needed for phones, laptops, or standard US electronics. Voltage is 120V — compatible with dual-voltage US chargers.
AST (UTC-4)
Netherlands Antillean Guilder (ANG) (ƒ)
Cash in Netherlands Antillean Guilder (ANG) is preferred across most of Sint Maarten outside major hotels and tourist centers. Card terminals are not common in local markets or small restaurants. Withdraw enough cash at a reliable ATM before leaving the city — rural areas may not have ATM access.
Quick tip
WiFi availability in Sint Maarten is rated good. Enabling WiFi Calling on your phone before departure lets you receive calls and texts over hotel or cafe WiFi without triggering a carrier roaming day pass.
Good to know
Sint Maarten's WiFi availability is rated good. Relying on hotel WiFi alone means no connectivity during inter-island transfers or boat trips. An eSIM at $1.60/GB covers those gaps.
Step by step
How to add a Sint Maarten eSIM to your phone
- At the airport before departure: if Settings > Cellular shows an "Add eSIM" option, your phone is ready — buy and install a Sint Maarten plan in under 5 minutes on any airport WiFi
- Holafly offers the Sint Maarten 1GB plan for $1.60 — buy it directly from their app or website. Compare all eSIM providers to find the best option for your trip.
- Open your phone's eSIM settings and scan the QR code — do this before your flight to Princess Juliana International Airport (SXM) so it activates the moment you land
- Turn off Data Roaming (Settings > Cellular on iPhone, or Connections > Mobile Networks on Android) to stop carrier charges. Read the full how-to-turn-off-data-roaming guide for device-specific steps.
- On iPhone at Princess Juliana International Airport (SXM): tap Settings > Cellular, select your Holafly eSIM line, and set it as the active data SIM — TelCell (TelEm)'s LTE signal appears in the status bar within 30 seconds
- On Samsung Galaxy: go to Settings > Connections > Mobile Networks > WiFi Calling and enable it on your home SIM — calls route over the eSIM data connection in Sint Maarten
Data tips
Sint Maarten data management for budget travelers
Data usage by activity: social media 80 MB/hour, maps and navigation 50 MB/hour, WhatsApp voice calls 30 MB/hour, video calls 250 MB/hour, video streaming 1 GB/hour. Download Google Maps offline areas for Sint Maarten before departure. Set social media apps to load images on WiFi only to reduce cellular usage by 40-60%.
Regional context
Mobile data across Caribbean: Sint Maarten breakdown
A few things to know before turning off carrier roaming in Sint Maarten:
Island shared with French Saint-Martin — different carriers on each side
US dollar widely accepted
Famous for low-altitude plane landings at Maho Beach
Good WiFi at hotels and restaurants throughout the island Roaming passes charge $10/day to fill WiFi gaps. An eSIM covers the same connectivity at $1.60/GB.
Forgot your eSIM?
Buying an eSIM after you land in Sint Maarten: what it costs
If you reach Sint Maarten without an eSIM, your first 30 minutes at the airport determine your data costs. Princess Juliana International Airport (SXM)'s arrivals area has free WiFi. Connect immediately — no queue, no counter. From there, Airalo, Holafly, Saily, and Nomad all support post-arrival eSIM purchases. The process: download the app over WiFi, choose a Sint Maarten plan, scan the QR code, and activate. A 5GB plan on TelCell (TelEm) costs $8. That is still below AT&T's International Day Pass cost for two days. If airport WiFi drops mid-install, hotel lobby WiFi provides a stable fallback for finishing the process.
Sint Maarten FAQ
Sint Maarten eSIM & roaming questions
How much does carrier roaming cost in Sint Maarten?
T-Mobile includes Sint Maarten in its free international plan, but throttles every connection to 256 Kbps — one-eighth the speed of basic 2G. AT&T costs $10/day, Verizon costs $10/day. A travel eSIM on TelCell (TelEm) at $1.60/GB provides full 4G LTE — the same towers, none of the speed cap, and less money than either paid carrier option.
Is T-Mobile's free international data fast enough in Sint Maarten?
No. T-Mobile caps free international data at 256 Kbps in Sint Maarten — one-eighth the speed of basic 2G. At that rate, Google Maps takes 15+ seconds to load a single tile and will not work for navigation. Streaming video requires at least 1.5 Mbps; video calls need 2 Mbps. Basic WhatsApp text messages work, but anything else does not. T-Mobile's high-speed add-on for Sint Maarten costs $15/day. A travel eSIM on TelCell (TelEm)'s 4G LTE network delivers full local speeds at $1.60/GB — cheaper per GB than the speed upgrade.
How is my roaming bill calculated in Sint Maarten?
Your carrier uses one of two models. Per-day billing: AT&T charges $10 and Verizon charges $10 for each calendar day your phone connects in Sint Maarten — even if you only check a notification at midnight. Per-MB billing: without a day pass, AT&T charges $2.05 per megabyte, which adds up to $2,099 per GB. Both models penalize casual background data usage. A travel eSIM uses flat-rate billing — you pay $1.60/GB upfront, with no per-day activations and no per-MB overages. Once purchased, the cost is fixed regardless of usage patterns.
How much does 1 GB of roaming data cost in Sint Maarten?
On AT&T without a plan: roughly $2,050 (at $2.05/MB). With AT&T International Day Pass: $10/day — you get access to your home plan's data allowance, but the day fee applies regardless of usage. With a travel eSIM: $1.60 per GB on TelCell (TelEm)'s 4G LTE network. The eSIM is the only option where you pay strictly for what you use at a predictable, low per-GB cost.
Is an eSIM worth it for Sint Maarten?
Yes, if you use more than a few megabytes per day. AT&T charges $10/day for roaming in Sint Maarten, which totals $70 for a week. A travel eSIM on TelCell (TelEm) starts at $1.60/GB for the same 4G LTE speeds. The breakeven point is day one: even a single day of eSIM data costs less than one day of carrier roaming. The eSIM connects to the same local towers your carrier uses, so speed and coverage are identical.
How much does US carrier roaming cost in Sint Maarten?
AT&T charges $10/day in Sint Maarten on International Day Pass. Verizon charges $10/day on TravelPass. T-Mobile includes Sint Maarten at 256 Kbps free, or $15/day for usable speed. A 7-day trip: AT&T $70, Verizon $70, T-Mobile paid $105. A travel eSIM on TelCell (TelEm) at $1.60/GB costs roughly $16.80 for the same week. Rates checked June 2026.
Does carrier roaming or an eSIM work better on a cruise departing from Sint Maarten?
On land in Sint Maarten, both options connect through TelCell (TelEm)'s 4G LTE towers with no meaningful difference. On a cruise ship, neither carrier roaming nor a travel eSIM applies — ships use maritime satellite networks billed separately by the cruise line at $15-30/day. Buy the cruise WiFi package for onboard connectivity. Use the eSIM or carrier roaming only when the ship is docked and you are on shore.
Is a Caribbean eSIM plan cheaper than individual Sint Maarten coverage?
It depends on your itinerary. If you visit only Sint Maarten, a country-specific eSIM at $1.60/GB is the right choice. If your trip covers multiple islands, a regional Caribbean plan covering several countries under one data bucket may be cheaper than separate eSIMs for each stop. AT&T and Verizon charge $10/day per country — a 4-island trip at 2 days each costs $80 in carrier roaming.
What is T-Mobile's free tier speed in Sint Maarten, and is it usable?
T-Mobile's free international tier in Sint Maarten is capped at 256 Kbps. That speed supports plain text messages and basic email without attachments. It does not support Google Maps navigation (needs 500+ Kbps), WhatsApp photo sending (45+ seconds per image), or ride-hailing apps. T-Mobile's high-speed add-on runs $15/day — comparable to AT&T and Verizon. A travel eSIM on TelCell (TelEm) at $1.60/GB delivers full 4G LTE with no speed cap.
How much does carrier roaming cost for a week in Sint Maarten?
AT&T: $70/week (International Day Pass at $10/day). Verizon: $70/week (TravelPass). T-Mobile: free at 256 Kbps or $105/week for usable speed. The cheapest eSIM for Sint Maarten starts at $1.60/GB on TelCell (TelEm)'s 4G LTE network — better per-GB value than all three carriers.
Fact check
What is wrong about how people think about Sint Maarten roaming
eSIM drains more battery than a physical SIM
An eSIM is a programmable chip embedded in your phone's hardware — the same radio module that handles physical SIM cards. It draws no additional power beyond what a physical SIM uses. Battery drain in Sint Maarten is driven by signal strength and data activity, not by SIM format. Weak signal forces your radio to search harder — that is the actual drain variable regardless of SIM type.
A VPN eliminates roaming costs
A VPN changes the routing of your data packets — it does not change which cellular network your phone connects to. In Sint Maarten, your phone attaches to TelCell (TelEm)'s towers whether or not a VPN is active. AT&T still bills $10/day for that connection even when you tunnel traffic through a VPN server. A VPN also adds 10–20% overhead to your total data consumption on top of the carrier charge.
eSIMs use different, slower networks
A travel eSIM in Sint Maarten connects to the same TelCell (TelEm) towers as AT&T and Verizon roaming. The radio frequency bands, signal strength, and 4G LTE speed are identical. AT&T's roaming agreement with TelCell (TelEm) and a travel eSIM provider's agreement with TelCell (TelEm) both access the same physical infrastructure. No speed penalty exists for switching from roaming to eSIM.
Our recommendation
Sint Maarten trip connectivity: the cost outcome
The numbers point to Nomad for Sint Maarten. Nomad offers the lowest per-GB rate for Sint Maarten at $1.60/GB on TelCell (TelEm). The checkout takes under 2 minutes and QR code delivery is instant. A 5GB plan at $8 covers a week of maps, messaging, and social media. Airalo is the pick if you want regional bundles or multi-country coverage from a single eSIM.
7 days in Sint Maarten: $68 difference between carrier roaming and eSIM
A Sint Maarten eSIM costs $1.60 for the same data your carrier charges $70+ to roam.
Get a Sint Maarten eSIM