Savings Calculator
How Much You Save with eSIM vs Carrier Roaming in Saint Barthelemy (2026)
Carrier roaming in Saint Barthelemy runs $10-$15/day. A 10-day trip costs $100-$150. An eSIM on Orange delivers the same connection for $43.34. The math below shows exactly how much you keep.
Your carrier's roaming rate in Saint Barthelemy
| Carrier | Plan | Daily Rate | 7-Day Cost |
|---|---|---|---|
| AT&T | International Day Pass | $10/day | $70 |
| Verizon | TravelPass | $10/day | $70 |
| T-Mobile | Magenta (high-speed add-on) | $15/day | $105 |
| Xfinity Mobile | International Pass | $10/day | $70 |
AT&T International Day Pass
AT&T's day pass in Saint Barthelemy activates the moment your phone connects to Orange's network abroad — including the two minutes of background data sync when you land. A full $10 charge runs whether you use 10MB or 10GB that day.
Verizon TravelPass
Verizon pays Orange for roaming access in Saint Barthelemy and charges you $10/day. A travel eSIM bypasses that arrangement at $2.17/GB on the same Orange towers.
T-Mobile Magenta (high-speed add-on)
T-Mobile routes through Orange in Saint Barthelemy at $15/day — the same network a $2.17/GB eSIM uses.
Xfinity Mobile International Pass
In Saint Barthelemy, Xfinity Mobile connects to Orange towers at $10/day. An eSIM reaches the same towers from $2.17/GB.
eSIM alternative cost for Saint Barthelemy
Plan tiers for Saint Barthelemy
| Tier | Price | Per GB |
|---|---|---|
| 1GB | $5.70 | $5.70 |
| 3GB | $16 | $5.33 |
| 5GB | $22.66 | $4.53 |
| 10GB | $32.56 | $3.26 |
| 20GBBest fit | $43.34 | $2.17 |
Unlimited daily option
| Days | Price | Per Day | Discount |
|---|---|---|---|
| 1 days | $5.65 | $5.65 | 4% |
| 3 days | $16.26 | $5.42 | 8% |
| 7 days | $37.93 | $5.42 | 8% |
| 14 days | $73.39 | $5.24 | 11% |
| 30 days | $144.89 | $4.83 | 18% |
Which provider covers Saint Barthelemy
The primary provider for Saint Barthelemy is Airalo, connecting to Orange's 5G network. Compare all eSIM providers
Savings breakdown
| Trip Length | AT&T | Verizon | T-Mobile HS | eSIM | You Save |
|---|---|---|---|---|---|
| 3 days | $30 | $30 | $45 | $22.66 | $7.34 (24%) |
| 7 days | $70 | $70 | $105 | $43.34 | $26.66 (38%) |
| 14 days | $140 | $140 | $210 | $43.34 | $96.66 (69%) |
| 21 days | $210 | $210 | $315 | $43.34 | $166.66 (79%) |
| 30 days | $300 | $300 | $450 | $43.34 | $256.66 (86%) |
Family and group savings
Carrier roaming charges multiply per person. eSIM savings multiply even faster for groups.
Solo traveler
Carrier: $100
eSIM: $43.34
Save $56.66
Couple
Carrier: $200
eSIM: $86.68
Save $113.32
Family of 4
Carrier: $400
eSIM: $173.36
Save $226.64
Trip length calculator
How much data you need
Maps & navigation
50 MB/hr
Social media
80 MB/hr
Video calls
250 MB/hr
Photo uploads
10 MB/photo
Music streaming
70 MB/hr
Web browsing
60 MB/hr
Real savings scenarios for Saint Barthelemy
Solo traveler
Solo trip to Saint Barthelemy, 10 days. AT&T: $10/day x 10 = $100. Verizon: $10/day x 10 = $100. T-Mobile high-speed: $15/day x 10 = $150. eSIM 20GB on Orange: $43.34. The eSIM saves $56.66 vs AT&T, $56.66 vs Verizon, and $106.66 vs T-Mobile's paid tier.
Family trip
Families with mixed carriers — one parent on AT&T, one on Verizon, kids on T-Mobile — face $50/day in combined roaming for Saint Barthelemy. Over 10 days: $500. Four eSIMs on Orange at $43.34 each: $173.36. Savings: $326.64. One purchase per person, no coordination between carriers.
Business trip
Five employees attending a conference in Saint Barthelemy for 5 days: AT&T roaming for the team: 5 x $10/day x 5 = $250. Five 20GB eSIMs: $216.70. Team savings: $33.30. All five connect to Orange's 5G network. The eSIM receipts are cleaner for expense processing: one charge per person, no daily line items.
Long-stay and digital nomads
Seasonal residents spending 60-90 days in Saint Barthelemy: AT&T roaming at $10/day for 60 days = $600. For 90 days: $900. An unlimited eSIM at $5.89/day for 90 days: $530.10. At these durations, a local SIM card or a monthly local plan becomes the most cost-effective option. But compared to keeping AT&T or Verizon roaming active, an eSIM saves $314.10 over a 90-day stay.
Frequent traveler annual savings
If Saint Barthelemy is one stop on a multi-destination travel year: AT&T charges $10/day in every country. eSIM prices vary by destination. For Saint Barthelemy alone: $100 (AT&T) vs $43.34 (eSIM) per 10-day trip. Across 4 international trips averaging 10 days each, AT&T charges $400 in roaming alone. eSIMs for the same itineraries run 80-95% less per trip.
Extended stay economics
A remote worker billing a client for Saint Barthelemy connectivity: AT&T line item: $300/month. Coworking space WiFi in Saint Barthelemy: $50-$150/month. eSIM on Orange: $130.20/month. The eSIM provides cellular backup when coworking WiFi drops during client calls. AT&T's Day Pass does the same but costs $169.80 more per month. Over a 3-month stay: AT&T totals $900, eSIM totals $390.60.
Frequent flyer savings
Most frequent travelers visit multiple countries, not just Saint Barthelemy. If AT&T charges $10/day in every destination and the average trip is 10 days, 4 trips cost $400/year in roaming alone. At an average eSIM cost of $43.34 per trip, the annual total drops to $173.36. That $226.64/year buys a round-trip flight in many markets.
Data usage savings
Remote workers on video calls consume the most data in Saint Barthelemy. Zoom/Teams at standard quality: 1.5 GB/hour. Two 1-hour calls/day for 10 days: 30 GB. AT&T: $100 (the daily fee does not increase with usage). eSIM on Orange: $65.10 at $2.17/GB for 30 GB. Even heavy video call users pay less with the eSIM.
Couples trip savings
A couple on AT&T traveling to Saint Barthelemy for 10 days: 2 lines x $10/day x 10 = $200. Two 20GB eSIMs: $86.68. Savings: $113.32. Both partners keep their US numbers active via WiFi Calling. Each eSIM connects independently to Orange's 5G towers. No hotspot coordination required — each phone has its own data.
UK carrier comparison
Vodafone and EE apply fair-use data caps to roaming in Saint Barthelemy. Once the cap is reached, speed drops to near-2G levels while the GBP6/day charge continues. The fair-use threshold is not published prominently. A 20GB eSIM at $43.34 has a stated data ceiling with no hidden throttle. You know exactly how much data you get and the speed does not degrade until the plan is fully consumed.
Our verdict
Bottom line for Saint Barthelemy: the eSIM wins. $43.34 for 20GB on Orange vs $100 on AT&T for 10 days. Same towers, same speeds, 57% lower cost. No daily triggers, no per-MB billing, no bill surprises from background app syncs.
How much can I save with eSIM in Saint Barthelemy?
eSIM savings in Saint Barthelemy scale with trip length. A 7-day trip saves $26.66 vs AT&T ($70 roaming vs $43.34 eSIM). A 14-day trip saves $96.66 ($140 vs $43.34). Both connect to Orange's network. Rates verified May 2026.
How much does roaming cost in Saint Barthelemy?
Roaming in Saint Barthelemy costs $10/day on AT&T ($100 for 10 days), $10/day on Verizon ($100), and $15/day on T-Mobile for high-speed data ($150). A travel eSIM on Orange costs $43.34 for 20GB. Rates verified May 2026.
Saint Barthelemy network context
Local networks
Saint Barthelemy has 1 mobile network. The primary carriers are Orange, Dauphin Telecom.
Connectivity notes
- Small island with good coverage
Good to know
Between islands and transport links in Saint Barthelemy, WiFi coverage is moderate. An eSIM running on the local network at $2.17/GB keeps maps and messaging active during transit.
Good to know
Orange is the only mobile network in Saint Barthelemy. Your carrier roaming plan and a travel eSIM both connect to the same towers. The signal quality is identical; only the cost differs.
Frequently asked questions
- How much does AT&T roaming cost for 10 days in Saint Barthelemy?
- AT&T International Day Pass charges $10/day in Saint Barthelemy. A 10-day trip costs $100 in roaming charges. This activates automatically when your phone connects to a local network abroad.
- Is a travel eSIM cheaper than Verizon TravelPass in Saint Barthelemy?
- Verizon TravelPass charges $10/day in Saint Barthelemy. A 10-day trip costs $100. A 20GB eSIM covers the same trip for $43.34 on the same local network — saving you 57%.
- How much data do I need for a week in Saint Barthelemy?
- Most travelers use 1-2 GB per day for maps, messaging, social media, and light browsing. A 7-day trip needs 7-14 GB. Video calls and streaming push usage to 3+ GB per day. Choose a 10GB or 20GB plan for heavy use.
- Can a family share one eSIM in Saint Barthelemy?
- One eSIM stays in one phone, but most eSIM plans allow tethering (personal hotspot). A family of 4 can share a single 10-20GB eSIM through one phone's hotspot instead of paying $10/day per person for carrier roaming.
- Does T-Mobile free data work in Saint Barthelemy?
- T-Mobile Magenta includes free data in Saint Barthelemy, but speed is capped at 256 Kbps. That is too slow for Google Maps, video calls, or uploading photos. The high-speed add-on costs $15/day.
- How much does a 30-day eSIM cost for Saint Barthelemy?
- A 30-day eSIM for Saint Barthelemy depends on data volume. Metered plans (5-20GB) typically range from $8 to $35. Unlimited daily plans run $1-2/day. Both connect to the same local network as carrier roaming at a fraction of the cost.
- How much does carrier roaming cost in Saint Barthelemy?
- T-Mobile includes Saint Barthelemy 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 Orange at $5.70 for 1GB provides full 5G — 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 Saint Barthelemy?
- No. T-Mobile caps free international data at 256 Kbps in Saint Barthelemy — 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 Saint Barthelemy costs $15/day. A travel eSIM on Orange's 5G network delivers full local speeds at $2.17/GB — cheaper per GB than the speed upgrade.
- How is my roaming bill calculated in Saint Barthelemy?
- 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 Saint Barthelemy — 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 1GB for $5.70 upfront, with no per-day activations and no per-MB overages. Once purchased, the cost is fixed regardless of usage patterns.
- Do roaming charges apply to WiFi usage in Saint Barthelemy?
- No. WiFi is free — roaming charges only apply to cellular data. But in Saint Barthelemy, WiFi outside hotels and major restaurants is unreliable. An eSIM at $2.17/GB on Orange provides continuous 5G data for maps, ride-hailing, and navigation when WiFi is unavailable. The eSIM and WiFi work together — you use whichever is available without switching settings manually.
- What is the cheapest way to get data in Saint Barthelemy?
- A travel eSIM at $2.17/GB on Orange's 5G network. AT&T roaming costs $10/day. Verizon costs $10/day. T-Mobile's free tier runs at 256 Kbps, which is unusable for navigation or apps. The eSIM beats every carrier option on per-GB cost and provides the same network quality as the paid roaming tiers.