Cost Comparison
Is Roaming or eSIM Better for Reunion? Carrier Rates Analyzed (2026)
AT&T charges $10/day for Reunion roaming. Verizon charges $10/day. A travel eSIM on Orange RE's 5G network costs $18.43 for 10 days — 82% less than either carrier. Below is every rate, side by side.
Roaming costs by carrier
Vodafone in Reunion
Plan
Roaming Passport
Daily rate
£6/day
7-day cost
£42
14-day cost
£84
Vodafone's fair-use threshold in Reunion is not published on its rate card. Once exceeded, speeds drop to 2G-equivalent rates while the £6/day charge continues. An eSIM plan at $1.83/GB has a defined data ceiling with no speed surprises.
EE in Reunion
Plan
Roam Abroad
Daily rate
£6/day
7-day cost
£42
14-day cost
£84
EE includes calls and texts in the £6/day Reunion pass, but SMS to non-UK numbers may carry per-message charges in some tariffs. Check the current rate card before sending group messages abroad.
AT&T in Reunion
Plan
International Day Pass
Daily rate
$10/day
7-day cost
$70
14-day cost
$140
One week of AT&T roaming in Reunion costs $70 ($10/day through Orange RE). An eSIM on Orange RE starts at $1.83/GB for the same connection.
Verizon in Reunion
Plan
TravelPass
Daily rate
$10/day
7-day cost
$70
14-day cost
$140
Verizon charges $10 for each calendar day your phone uses data in Reunion — not each 24-hour window. Arriving after midnight and leaving before midnight the next day costs two full day-pass charges on the same trip.
eSIM costs by provider
Metered plans (1GB-20GB)
| Tier | Price | Per GB |
|---|---|---|
| 1GB | $3.67 | $3.67 |
| 3GB | $5.48 | $1.83 |
| 5GB | $11.32 | $2.26 |
| 10GB | $18.43 | $1.84 |
Unlimited daily plans
| Days | Price | Per Day | Discount |
|---|---|---|---|
| 1 days | $3.10 | $3.10 | 4% |
| 3 days | $8.91 | $2.97 | 8% |
| 7 days | $20.80 | $2.97 | 8% |
| 14 days | $40.25 | $2.88 | 11% |
| 30 days | $79.46 | $2.65 | 18% |
Network access
eSIM plans in Reunion connect to Orange RE's 5G network — the same towers that carrier roaming uses. Orange RE is the sole operator, so both roaming and eSIM deliver identical coverage.
Side-by-side comparison
7-day trip comparison
| Option | Cost | Data | Speed | Network |
|---|---|---|---|---|
| Vodafone | £42 | Fair-use | LTE | Orange RE |
| EE | £42 | Fair-use | LTE | Orange RE |
| AT&T | $70 | Plan data | LTE | Orange RE |
| Verizon | $70 | Plan data | LTE | Orange RE |
| eSIM (10GB) | $18.43 | 10GB | 5G | Orange RE |
| eSIM (Unlimited) | $22.61 | Unlimited | 5G | Orange RE |
14-day trip comparison
| Option | Cost | Data | Speed | Network |
|---|---|---|---|---|
| Vodafone | £84 | Fair-use | LTE | Orange RE |
| EE | £84 | Fair-use | LTE | Orange RE |
| AT&T | $140 | Plan data | LTE | Orange RE |
| Verizon | $140 | Plan data | LTE | Orange RE |
| eSIM (10GB) | $18.43 | 10GB | 5G | Orange RE |
| eSIM (Unlimited) | $45.22 | Unlimited | 5G | Orange RE |
Per-day rate breakdown
AT&T charges $10/day. A 10GB eSIM spread across 10 days costs $1.84/day — 5.4x cheaper on the same Orange RE 5G network.
Hidden charges
Auto-enrollment and day-one billing
AT&T and Verizon roaming passes activate automatically when your phone connects to Orange RE's network in Reunion. Calendar-day billing means arriving at 11:30 PM and leaving before midnight the next day counts as two full day charges. A single background app refresh on landing triggers the first charge.
Speed throttling and data caps
T-Mobile's free international data runs at 256 Kbps — too slow for Google Maps, Instagram, or video calls. Xfinity Mobile caps high-speed data at 200 MB per day before throttling. AT&T and Verizon do not publish their throttling thresholds, but users report speed reductions on sustained high-bandwidth use.
Voicemail and background app charges
Checking voicemail abroad is treated as an inbound international call. If the day pass has not yet activated, that single voicemail retrieval triggers the full daily charge. Background app sync, push notifications, and automatic app updates all count toward data usage and can activate the daily pass without your knowledge.
Fair-use caps on UK carriers
Vodafone and EE apply unpublished fair-use data thresholds for Reunion roaming. Once exceeded, speeds drop to 2G-equivalent rates while the daily charge continues. The exact threshold depends on your home plan tier and is not disclosed on the rate card.
Carrier rate analysis for Reunion
AT&T International Day Pass
AT&T International Day Pass billing for Reunion: $10 triggers on any calendar day your phone uses Orange RE's network. A calendar day resets at midnight local time, not at midnight EST. A background iCloud sync at 11:59 PM costs $10. A second sync at 12:01 AM costs another $10. Two minutes of background data: $20. Over 10 days, midnight roll-overs can add 1-2 phantom billing days, pushing the actual cost to $120. A 15GB eSIM at $27.45 uses data-bucket billing, which charges based on consumption, not calendar days.
Verizon TravelPass
Verizon does not require manual TravelPass activation. Your phone connects to Orange RE automatically when the plane lands in Reunion. The $10 charge appears on your bill for that day. If you did not intend to use data, the charge still applies from a single tower handshake. Prevention: disable data roaming on the Verizon SIM before departure. Use a 15GB eSIM at $27.45 for all data instead. The eSIM charges a fixed amount regardless of when your phone touches Orange RE's network.
T-Mobile International
Speed requirements for common travel apps vs T-Mobile's 256 Kbps free tier in Reunion: Google Maps navigation: needs 500 Kbps (fails at 256). Uber/Lyft driver tracking: needs 300 Kbps (intermittent at 256). WhatsApp voice call: needs 100 Kbps (works at 256, barely). WhatsApp video call: needs 2,000 Kbps (fails at 256). Instagram/TikTok: needs 1,500 Kbps (fails at 256). T-Mobile's free tier supports plain text messaging and email without attachments. Everything else requires the $15/day upgrade or a 15GB eSIM at $27.45.
Vodafone Roaming Passport
After Brexit, Vodafone split roaming into two zones. EU destinations: often included on contract plans at no extra charge. Rest-of-world (including Reunion): GBP6/day. The distinction matters for destinations near Europe. Turkey, Morocco, and other non-EU neighbors carry the rest-of-world rate. A 15GB eSIM at $27.45 applies the same rate regardless of EU classification on Orange RE's 5G network.
EE Roam Abroad
EE does not require manual roaming activation for Reunion. Your phone connects to Orange RE the moment the plane lands. The GBP6/day charge applies from that first connection. To avoid: switch to airplane mode before landing. Activate the travel eSIM from the provider app. Set the eSIM as the primary data SIM. Only then disable airplane mode — the EE SIM stays active for calls while the eSIM at $27.45 handles all data on Orange RE.
Xfinity Mobile International Pass
Xfinity Mobile runs on Verizon's domestic network but sets its own international rates. The $10/day pass includes only 200 MB of high-speed data per day in Reunion. Verizon's own TravelPass at $10/day provides access to the full domestic plan data. Xfinity customers pay the same daily rate for less data. A 15GB eSIM on Orange RE at $27.45 provides more data than 10 days of Xfinity's 200 MB/day cap would deliver (2000 MB total vs the eSIM's full 15GB).
Three UK Go Roam
Three UK customers on plans started before June 2022 may still have free Go Roam. Customers on plans started after June 2022 pay £2/day in Go Roam destinations and £5/day elsewhere. Reunion roaming cost depends entirely on when your Three contract started. A travel eSIM at $27.45 on Orange RE costs the same regardless of when you signed up. No plan-date lookup required.
MVNO roaming comparison
Mint Mobile (T-Mobile MVNO) does not offer international roaming plans. Mint customers traveling to Reunion have no carrier data option. Pay-per-use rates apply through T-Mobile's international billing at rates that can reach $0.20/KB in some markets. A 15GB eSIM at $27.45 on Orange RE is the only practical option for Mint Mobile customers visiting Reunion. No Mint plan tier includes international data coverage.
Rate summary
AT&T (International Day Pass): AT&T International Day Pass costs 264% more than an eSIM for Reunion.
Verizon (TravelPass): Verizon TravelPass costs 264% more than an eSIM for Reunion.
T-Mobile (Magenta (high-speed add-on)): T-Mobile's paid high-speed tier costs more than AT&T and more than an eSIM.
Vodafone (Roaming Passport): Vodafone rest-of-world rate exceeds eSIM cost for any trip over 1 day to Reunion.
EE (Roam Abroad): EE Roam Abroad costs more than an eSIM for Reunion at all trip lengths.
Bill shock scenarios
Scenario: a traveler forgets to add AT&T Day Pass before a 10-day trip to Reunion. Day 1: normal phone use, 200 MB, $410. Day 2: realizes something is wrong after checking the AT&T app, adds Day Pass. Days 2-10: $10/day x 9 = $90. Total: $500 for a trip that would cost $27.45 on a 15GB eSIM from Orange RE. Day 1 pay-per-use alone exceeded the entire eSIM price.
How to switch to an eSIM
Setting up dual-SIM for Reunion (works with any US carrier): Your phone runs two SIMs simultaneously: the home carrier SIM and the travel eSIM. Home SIM role: calls and texts only. Data roaming OFF. WiFi Calling ON. eSIM role: all mobile data on Orange RE's 5G network at $18.30 for 10GB. How they work together: incoming calls arrive on your US number via WiFi Calling routed over the eSIM's data connection. iMessage and WhatsApp stay tied to your home number. Maps, browsers, and apps use the eSIM's data. AT&T/Verizon/T-Mobile cannot bill roaming charges when data roaming is disabled on their SIM.
Is eSIM cheaper than roaming in Reunion?
Yes, an eSIM is 82% cheaper than carrier roaming in Reunion. AT&T charges $100 for a 10-day trip at $10/day. A travel eSIM on Orange RE's 5G network costs $18.43 for 10GB. Both use the same cell towers. The eSIM saves $81.57 on identical infrastructure. Rates verified May 2026.
Should I use eSIM or roaming in Reunion?
Use an eSIM for Reunion. Install it by scanning a QR code before departure. It activates on Orange RE's 5G network when you land, costs $18.43 for 10GB, and keeps your home number active via dual-SIM. Carrier roaming costs $100 for the same 10 days. Verified May 2026.
Does T-Mobile work in Reunion?
Yes, T-Mobile connects to Orange RE in Reunion, but free international data runs at 256 Kbps. That is 2G-equivalent speed. Upgrading to high-speed costs $15/day. A travel eSIM at $18.43 for 10GB provides full 5G speed on the same Orange RE towers. Verified May 2026.
What is the best way to get data in Reunion?
The best way to get data in Reunion: 1) Travel eSIM ($18.43 for 10GB on Orange RE, instant activation). 2) Local prepaid SIM (requires registration at airport). 3) Carrier roaming ($10/day, $100 for 10 days). The eSIM saves $81.57 vs roaming with no setup wait. Verified May 2026.
Our verdict for Reunion
When carrier roaming makes sense
Carrier roaming makes sense for 1-day layovers where the $10 charge is less than the effort of installing an eSIM. Travelers who need voice calling to local Reunion numbers may also prefer their carrier plan, since eSIM data plans do not include voice service.
When an eSIM wins
For any trip longer than 2 days, an eSIM saves money over carrier roaming in Reunion. Families and groups save even more because carrier charges multiply per person. Countries with airport SIM queues make eSIM especially valuable — install before departure, activate on landing.
Bottom line for Reunion
For a 10-day trip to Reunion, an eSIM saves $81.57 vs AT&T and delivers the same 5G connection on Orange RE's network.
Reunion connectivity details
Local network infrastructure
Reunion has 1 mobile network. Primary carriers: Orange RE, SFR, Free. Both carrier roaming and eSIM connect to these same networks.
Good to know
Orange is the only mobile network in Reunion. Your carrier roaming plan and a travel eSIM both connect to the same towers. The signal quality is identical; only the cost differs.
Quick tip
Local prices in Reunion are in EUR (€). eSIM plans are priced in USD, eliminating exchange rate uncertainty.
Frequently asked questions
- Is roaming or eSIM better for Reunion?
- For trips longer than 2 days, an eSIM is cheaper than carrier roaming in Reunion. AT&T charges $10/day while an eSIM costs $18.43 total for a 10-day trip. Both use Orange RE's 5G network — the only difference is the price.
- What hidden charges does AT&T have for Reunion roaming?
- AT&T's International Day Pass auto-activates when your phone connects to Orange RE's network in Reunion. Calendar-day billing means arriving at 11 PM costs a full $10. Background app sync, voicemail retrieval, and notifications can trigger the daily charge on days you intended to stay offline.
- Do eSIMs use the same network as carrier roaming in Reunion?
- Both eSIM and carrier roaming connect to Orange RE's 5G towers in Reunion. The network, coverage area, and download speeds are identical. The difference is pricing: carriers charge $10-$15/day while eSIMs charge a flat rate for the entire trip.
- Is T-Mobile roaming really free in Reunion?
- T-Mobile Magenta includes free data in Reunion, but speed is throttled to 256 Kbps. That is too slow for maps, video calls, or photo uploads. The high-speed add-on costs $15/day — more expensive than most eSIM plans.
- Can I use eSIM and keep my carrier number in Reunion?
- Dual-SIM phones (most models since 2019) run both your carrier SIM and the travel eSIM simultaneously. Your home number stays active for calls and texts over WiFi. The eSIM handles all data on Orange RE's 5G network in Reunion.
- What speed does carrier roaming get in Reunion?
- Carrier roaming in Reunion connects to Orange RE's 5G network — the same towers and speeds that an eSIM uses. AT&T and Verizon offer LTE speeds through their day pass. T-Mobile's free tier is capped at 256 Kbps unless you pay for the high-speed add-on.
- Does Verizon auto-charge for roaming in Reunion?
- Verizon TravelPass activates automatically when your phone connects abroad in Reunion. A single background data transfer triggers the $10/day charge. The only way to avoid it is to disable data roaming in your phone settings before landing.
- How do UK carrier rates compare for Reunion?
- Vodafone and EE charge £6/day for Reunion roaming outside their EU free-roaming zone. That is roughly $7.50/day at current exchange rates. An eSIM on Orange RE's network costs $18.43 for the entire trip.
- How much does carrier roaming cost in Reunion?
- AT&T charges $10/day on International Day Pass for Reunion. Verizon charges $10/day on TravelPass. T-Mobile includes Reunion for free at 256 Kbps — barely fast enough for text messages, not usable for maps or apps. Without any plan, AT&T's pay-per-use rate is $2.05/MB, meaning a single Google Maps session costs over $10. A travel eSIM on Orange RE starts at $3.67 for 1GB — the same 5G network at a fraction of the daily roaming cost.
- Is T-Mobile's free international data fast enough in Reunion?
- No. 256 Kbps sounds like it covers light use, but even a single email with an attachment or a 30-second map route takes over a minute to load at that speed. T-Mobile's free tier in Reunion is functional only for plain text messages. The paid upgrade runs $15/day — identical to AT&T's roaming fee. A travel eSIM on Orange RE at $1.83/GB costs less per GB than any day-pass option and has no speed restriction.
- How is my roaming bill calculated in Reunion?
- A traveler lands in Reunion, checks one notification, and AT&T bills $10 for the entire calendar day. That is how per-day billing works — any cellular connection, even a background sync at midnight, triggers the full daily charge. Without a day pass, AT&T charges $2.05/MB. A 15-second Instagram scroll could cost $30. An eSIM at 1GB for $3.67 is a fixed cost: no per-day triggers, no per-MB metering, no bill surprises.
- Can I use an eSIM instead of roaming in Reunion?
- Yes. A travel eSIM connects to Orange RE in Reunion at $1.83/GB. Your phone runs both SIMs at once — the eSIM handles all data traffic while your home SIM stays active for calls and texts. No roaming plan is required, and your home carrier cannot charge roaming if data roaming is disabled on that SIM. The eSIM activates the moment you land in Reunion and begins using 5G speeds immediately.