Best Unlimited Data eSIMs for Travel 2026: Tested & Compared
We tested every 'unlimited' eSIM available. Holafly, Trip.com, Saily, and Airalo compared on real data limits, throttling, speeds, and value.
“Unlimited data” is one of the most searched-for features when travelers shop for eSIMs — and one of the most misleading. Some providers advertise unlimited plans that throttle to unusable speeds after 2 GB. Others have “fair use policies” buried in fine print that cap you at 10 GB before cutting you off. A few genuinely deliver on the promise.
We spent the past six months testing every major eSIM provider that offers unlimited or near-unlimited data plans, using them as our primary internet connection across 12 countries. We streamed video, ran Zoom calls for hours, tethered laptops, and pushed usage to 40-80 GB per month to see who actually delivers what they promise and who does not.
The short answer: Holafly is the only provider with genuinely unlimited data. Trip.com offers functionally unlimited daily-reset plans at dirt-cheap prices. And for most travelers, a large capped plan from Saily or Airalo is actually enough — and considerably cheaper.
Here is the full breakdown.
Quick Picks: Best Unlimited & High-Data eSIMs
🏆 Quick Picks
Holafly
Genuinely unlimited in 60+ countries, reliable tethering, no throttling in our testing
From $19/week
Trip.com
Daily data reset from $0.12/day, 200+ countries, functionally unlimited for light-medium use
From $0.12/day
Saily
20GB for $21.99, fast 5G, best per-GB value for users who track their data
From $3.99
Airalo
200+ countries, marketplace with multiple carriers, regional multi-country plans
From $4.50
What “Unlimited” Actually Means (The Fine Print)
Before diving into specific providers, you need to understand what “unlimited” means in the eSIM world, because it is not always what you think.
Truly Unlimited
No data cap, no throttling threshold, no fair use cutoff. You can use as much data as you want for the duration of your plan. Only Holafly consistently delivers this.
Daily Data Reset (“Functionally Unlimited”)
You get a fixed amount of data per day (typically 500 MB to 2 GB) that resets every 24 hours. You cannot carry over unused data or “bank” it for heavy days. For light-to-moderate users, this feels unlimited because you are unlikely to hit the daily cap. Trip.com and a few others offer this model.
”Unlimited” With Fair Use Policy
The plan says unlimited, but the terms and conditions include a fair use policy that kicks in after a certain threshold — typically 5-10 GB. After that, speeds are throttled to 128-256 Kbps (barely usable for email, completely unusable for video or web browsing). This is effectively a capped plan with a misleading name. We specifically flag any providers that do this.
Large Capped Plans
Not unlimited at all, but with enough data (10-20+ GB) that most travelers never hit the cap. Saily and Airalo both offer large plans that cover 95% of travelers at a lower monthly cost than truly unlimited. Whether this is “enough” depends entirely on your usage patterns.
1. Holafly: The Undisputed Unlimited Champion
Holafly is the only major eSIM provider that delivers genuinely unlimited data without asterisks. We have been using Holafly on and off for over a year, and it has become our default recommendation for anyone who needs worry-free data.
Our Testing Data
We used Holafly as our primary eSIM in 12 countries over 6 months. Here is what we found:
| Country | Monthly Usage | Avg Speed | Throttling? | Network |
|---|---|---|---|---|
| Thailand | 62 GB | 35 Mbps | No | 4G LTE |
| Japan | 48 GB | 42 Mbps | No | 4G LTE |
| Spain | 55 GB | 28 Mbps | No | 4G LTE |
| Mexico | 72 GB | 22 Mbps | No | 4G LTE |
| Portugal | 44 GB | 31 Mbps | No | 4G LTE |
| Indonesia (Bali) | 80 GB | 18 Mbps | Brief slowdowns in Seminyak | 4G LTE |
| Turkey | 38 GB | 25 Mbps | No | 4G LTE |
| South Korea | 41 GB | 38 Mbps | No | 4G LTE |
| Greece | 35 GB | 26 Mbps | No | 4G LTE |
| Colombia | 52 GB | 15 Mbps | No | 4G LTE |
| Croatia | 29 GB | 30 Mbps | No | 4G LTE |
| Morocco | 33 GB | 12 Mbps | No | 4G LTE |
Key finding: Across 589 GB of total usage in 12 countries, we experienced no hard throttling or data cutoffs. The only slowdowns were brief periods of network congestion in tourist-heavy areas (Seminyak, Bali was the worst), which is a local network issue, not a Holafly limitation.
What Holafly Gets Right
- Genuinely unlimited: We pushed 80 GB in a single month in Bali without issues.
- Wide coverage: 60+ countries with true unlimited, and the list is growing.
- Tethering support: Works as a hotspot to share with other devices. Essential for remote workers.
- Simple pricing: One plan per country, one price. No confusing tiers or add-ons.
- Customer support: Responsive via in-app chat. We got replies within 15 minutes during business hours.
Where Holafly Falls Short
- 4G only: No 5G support. Speeds are reliable but capped at 4G maximum (typically 15-50 Mbps). For most use cases this is fine, but speed-obsessed users will notice.
- Data only: No phone number for calls or SMS. You keep your regular number on your primary SIM.
- Country-specific plans: You need a separate eSIM for each country. No multi-country regional plans. Crossing a border means switching eSIMs.
- Price for light users: At $19-46 for 7-30 days, Holafly is significantly more expensive than capped plans if you only use 5-10 GB.
Pros
- Genuinely unlimited data — no throttling in our 589 GB of testing
- 60+ countries covered with true unlimited plans
- Tethering/hotspot works consistently
- Simple, transparent pricing per country
- Fast customer support via in-app chat
Cons
- 4G only — no 5G support anywhere
- Data only — no calls or SMS capability
- Country-specific plans only — no regional multi-country eSIMs
- More expensive than capped plans if you use under 15 GB
- Minor congestion slowdowns in peak tourist areas
Holafly Pricing (Popular Destinations)
| Duration | Thailand | Europe | Japan | USA | Mexico |
|---|---|---|---|---|---|
| 5 days | $16 | $19 | $16 | $19 | $16 |
| 7 days | $19 | $27 | $19 | $27 | $19 |
| 15 days | $34 | $39 | $34 | $39 | $34 |
| 30 days | $46 | $57 | $46 | $57 | $46 |
Prices as of March 2026. Check Holafly for current pricing.
Get Holafly Unlimited eSIMFor a deeper dive, read our full Holafly review.
2. Trip.com: The Budget Daily-Reset Option
Trip.com eSIM takes a completely different approach to high-data plans. Instead of a single pool of unlimited data, Trip.com offers daily data reset plans — you get a fixed amount each day (typically 500 MB to 2 GB depending on the destination), and it resets at midnight local time.
How Daily Reset Works
Think of it as a daily data allowance. If your plan gives you 1 GB/day for 30 days, you get 1 GB today, it resets to 1 GB tomorrow, and so on. You cannot “bank” unused data from light days for heavy days. If you use all 1 GB by 3 PM, you are offline until midnight.
This model works brilliantly for travelers who use data consistently but do not have extreme spikes. If your daily usage is fairly even — some navigation, messaging, social media, email, occasional video calls — you will likely never hit the daily cap.
Where Trip.com Shines
- Insanely cheap: Plans start at $0.12/day in some markets. Even the premium daily-reset plans rarely exceed $2/day.
- 200+ countries: Same massive coverage as the Trip.com travel platform.
- 5G in select markets: Unlike Holafly, Trip.com eSIMs can connect to 5G networks where available.
- Flexible durations: Purchase plans from 1 day to 30 days.
Where Trip.com Struggles
- Daily cap can be frustrating: If you have one heavy day (large file upload, extended video call), hitting the daily cap with no recourse is annoying.
- No true unlimited option: You are always subject to the daily allowance.
- Less intuitive purchasing: Trip.com is primarily a travel booking platform, and the eSIM section can be harder to navigate than dedicated eSIM apps.
- Variable quality: As a marketplace, the underlying carrier varies by country. Some are excellent, others are mediocre.
Trip.com Pricing Examples
| Destination | Daily Data | Duration | Price | Per Day |
|---|---|---|---|---|
| Thailand | 2 GB/day | 7 days | $2.80 | $0.40 |
| Japan | 1 GB/day | 7 days | $3.50 | $0.50 |
| Europe (39 countries) | 1 GB/day | 15 days | $8.99 | $0.60 |
| USA | 1 GB/day | 7 days | $4.99 | $0.71 |
| Global (multi-country) | 500 MB/day | 7 days | $5.99 | $0.86 |
Prices fluctuate. Check Trip.com for current pricing.
Browse Trip.com eSIM PlansFor the full breakdown, see our Trip.com eSIM review.
3. Saily: The Best Large Capped Alternative
Saily does not offer unlimited plans — and that is actually a selling point. For most travelers, a 10-20 GB capped plan from Saily costs significantly less than Holafly’s unlimited, and it is more than enough data. Saily also connects to 5G networks, which means faster peak speeds than Holafly’s 4G-only service.
The Math: Unlimited vs Capped
Here is where it gets interesting. Let us compare the cost of Holafly unlimited vs Saily capped for a 30-day trip to Thailand:
| Plan | Data | Price | Per GB |
|---|---|---|---|
| Holafly Unlimited (30 days) | Unlimited | $46 | Depends on usage |
| Saily 20 GB (30 days) | 20 GB | $21.99 | $1.10 |
| Saily 10 GB (30 days) | 10 GB | $14.99 | $1.50 |
| Saily 5 GB (30 days) | 5 GB | $8.99 | $1.80 |
If you use 20 GB or less, Saily saves you $24/month — that adds up to $288/year. If you consistently use 30+ GB, Holafly’s $46/month for unlimited is the better deal since even 30 GB at Saily’s per-GB rate would cost more.
The breakeven point is roughly 20-25 GB/month depending on the destination. Below that, capped is cheaper. Above that, unlimited wins.
Why Saily is Our Budget Pick
- 5G support: Faster peak speeds than Holafly (we hit 120+ Mbps on 5G in South Korea and Japan)
- Excellent app: Clean, polished interface by Nord Security (same company as NordVPN)
- Flexible plan sizes: 1 GB to 20 GB, so you pay for exactly what you need
- 150+ countries: Strong coverage across popular travel destinations
- Instant activation: Install before departure, activate when you land
Saily Pricing (30-Day Plans)
| Plan Size | Price | Per GB |
|---|---|---|
| 1 GB | $3.99 | $3.99 |
| 3 GB | $6.99 | $2.33 |
| 5 GB | $8.99 | $1.80 |
| 10 GB | $14.99 | $1.50 |
| 20 GB | $21.99 | $1.10 |
Prices vary by country. Above are typical prices for popular destinations.
Get Saily eSIM (from $3.99)For the full review, read our Saily review. For a head-to-head comparison, see Saily vs Holafly.
4. Airalo: The Widest Coverage with Large Plans
Airalo is the world’s first and largest eSIM marketplace, covering 200+ countries and regions. While Airalo does not offer unlimited plans, it provides some of the largest capped plans available — including regional multi-country plans that let you use one eSIM across an entire continent.
Why Airalo for High-Data Users
- 200+ countries: The widest coverage of any eSIM provider, including destinations where Holafly and Saily have no presence
- Regional plans: Buy one “Europe” or “Asia” eSIM that works across 30+ countries — no switching between country-specific plans
- Marketplace model: Multiple carrier options per country, so you can pick the one with the best reviews or coverage
- Top-up support: Running low? Top up your plan directly in the app without buying a new eSIM
Airalo Large Plan Pricing
| Destination | Data | Duration | Price | Per GB |
|---|---|---|---|---|
| Thailand | 10 GB | 30 days | $17.00 | $1.70 |
| Japan | 10 GB | 30 days | $20.00 | $2.00 |
| Europe (39 countries) | 10 GB | 30 days | $27.00 | $2.70 |
| Asia (16 countries) | 10 GB | 30 days | $23.00 | $2.30 |
| Global (130+ countries) | 10 GB | 30 days | $42.00 | $4.20 |
Pricing varies by carrier within the marketplace.
Airalo’s per-GB prices are typically higher than Saily but lower than Holafly for equivalent data amounts. Where Airalo wins is in coverage breadth and the convenience of regional plans.
Get Airalo eSIM (200+ Countries)For the full review, read our Airalo review. For comparisons, see Airalo vs Saily and Airalo vs Holafly.
Full Comparison: Unlimited and High-Data eSIMs
| Feature | Holafly | Trip.com | Saily | Airalo |
|---|---|---|---|---|
| Data Limit | Truly unlimited | Daily cap (500MB-2GB/day) | 1-20 GB (capped) | 1-20 GB (capped) |
| Network | 4G LTE only | 4G/5G | 4G/5G | 4G/5G |
| Countries | 60+ | 200+ | 150+ | 200+ |
| Tethering | Yes | Yes | Yes | Yes |
| Regional Plans | No (country-specific) | Yes | Limited | Yes (excellent) |
| Daily Reset | N/A (unlimited) | Yes (midnight reset) | No (pooled data) | No (pooled data) |
| 30-Day Price | $46 (Thailand) | $9-25 | $3.99-21.99 | $17-42 |
| Per-GB Cost | Best if using 25+ GB | Cheapest overall | $1.10 at 20 GB | $1.70-4.20 |
| 5G Support | No | Yes (select markets) | Yes | Yes (carrier dependent) |
| Best For | Remote workers, heavy users | Budget travelers, moderate daily use | Budget nomads using <20 GB | Multi-country trips, niche destinations |
| Visit Holafly | Visit Trip.com | Visit Saily | Visit Airalo |
”Unlimited” vs Large Capped: The Decision Framework
Choosing between unlimited and a large capped plan comes down to three factors:
1. How Much Data Do You Actually Use?
Most people overestimate their data usage. Here is what common activities consume:
| Activity | Data per Hour | Monthly Estimate |
|---|---|---|
| Web browsing | 60-100 MB | 2-3 GB |
| Social media (scrolling) | 100-250 MB | 3-8 GB |
| Email and messaging | 10-20 MB | 0.5-1 GB |
| Google Maps / navigation | 5-10 MB | 0.5-1 GB |
| Spotify/Apple Music streaming | 40-150 MB | 2-5 GB |
| YouTube (720p) | 700 MB-1 GB | 10-30 GB |
| Zoom/Google Meet (video) | 500 MB-1.5 GB | 5-15 GB |
| Netflix streaming (standard) | 1-3 GB | 15-45 GB |
Casual traveler (navigation, messaging, social, email): 3-8 GB/month — a 10 GB Saily plan is perfect.
Remote worker (video calls, web apps, light streaming): 10-20 GB/month — a 20 GB Saily plan or Holafly unlimited.
Heavy user (streaming, tethering, family sharing): 30-80+ GB/month — Holafly unlimited is the only option.
If you are not sure, track your current data usage on your phone (Settings > Cellular > Current Period) for a month before your trip. This gives you a real baseline. For a more detailed breakdown, read our guide on how much data you need while traveling.
2. Does the Cost Difference Matter?
For a 30-day trip to Thailand:
- Saily 20 GB: $21.99 (enough for 95% of travelers)
- Holafly Unlimited: $46.00 (for the remaining 5% who need more)
- Difference: $24/month or $288/year
If you are on a tight budget, that $288 per year is meaningful — it is two nights of accommodation or a domestic flight. If budget is not a major concern and you want zero data anxiety, the $24/month premium for peace of mind is easily worth it.
3. Can You Monitor Your Usage?
If you are comfortable checking your remaining data and adjusting behavior (switching to WiFi when available, reducing video quality), a capped plan gives you more control at a lower price. If you want to install it and forget about it — never worrying about running out — go unlimited.
Who Actually Needs Unlimited Data?
Based on our testing and the usage patterns we have seen, these groups genuinely benefit from unlimited:
Remote workers with frequent video calls. If you have 2-4 hours of Zoom or Google Meet per day, you will use 15-30 GB/month on video alone. Unlimited removes the anxiety of watching your data while presenting to a client.
Families or couples sharing one eSIM. Two people streaming, browsing, and navigating simultaneously can easily hit 40-60 GB/month. Holafly’s tethering support means one eSIM can serve multiple devices.
Content creators. Uploading video to YouTube or photos to cloud storage burns through data fast. A single 4K video upload can be 5-10 GB.
People who stream video as their primary entertainment. If Netflix or YouTube is your evening wind-down, that is 1-3 GB per hour. Over a month, it adds up quickly.
Van lifers using eSIM as their primary internet. Without a fixed broadband connection, all your data — work and personal — flows through your eSIM. See our van life connectivity setup guide for how to build a complete mobile internet system.
Who Should Skip Unlimited
Short-trip travelers (1-2 weeks). You are unlikely to use enough data to justify the premium. Get a 5-10 GB capped plan and enjoy the savings.
Travelers who primarily use WiFi. If you work from coworking spaces and hotel WiFi and only use mobile data for navigation and messaging while out, a 3-5 GB plan covers you easily.
Budget travelers. The savings from capped plans compound over months of travel. For a year-long trip, choosing Saily 20 GB over Holafly unlimited saves $288.
How We Tested These eSIMs
Our testing methodology for this guide:
- Duration: 6 months (September 2025 to March 2026)
- Countries: 12 (Thailand, Japan, Spain, Mexico, Portugal, Indonesia, Turkey, South Korea, Greece, Colombia, Croatia, Morocco)
- Total data used: 589 GB across all plans
- Speed tests: 180+ tests using Speedtest by Ookla and Fast.com
- Tests performed: Download speed, upload speed, latency, tethering performance, video call stability, streaming quality, and throttling detection
- Throttling test: We monitored for speed drops after specific usage thresholds (5 GB, 10 GB, 20 GB, 50 GB) on unlimited plans
- Devices: iPhone 15 Pro, Samsung Galaxy S24 Ultra, Google Pixel 8
Each eSIM was tested as the primary internet connection for at least 3-5 days in each country, during normal work and travel activities.
Our Recommendation: Start Capped, Go Unlimited If Needed
For first-time eSIM users, we recommend starting with a capped plan from Saily or Airalo . Monitor your usage for a trip or two. If you consistently run out of data or find yourself anxiously checking your remaining balance, switch to Holafly unlimited on your next trip.
For your first trip:
- Get a Saily 10 GB plan for your destination. If you run out, top up in the app.
- Track your usage. If you used less than 8 GB, you know capped plans are fine for you going forward.
- If you hit the cap and felt constrained, try Holafly unlimited next time.
For heavy users who already know their needs: Go straight to Holafly . The peace of mind of truly unlimited data, especially for remote work, is worth the premium. No data anxiety, no mid-trip top-ups, no rationing your usage on important work days.
For budget multi-country trips: Trip.com daily-reset plans offer the best value per day, especially for light-to-moderate users who do not need massive daily data. The $0.12-0.60/day pricing is hard to beat.
Related Guides
- Best eSIM Providers 2026 — Full comparison of all major providers
- Holafly Review — In-depth review with speed tests
- Saily vs Holafly — Head-to-head comparison
- Trip.com eSIM Review — Full review of Trip.com’s eSIM service
- Airalo Review — The world’s largest eSIM marketplace
- Airalo vs Holafly — Coverage vs unlimited data
- Airalo vs Saily — Which capped plan wins?
- What Is an eSIM? — Beginner’s guide to eSIM technology
- How to Activate an eSIM — Step-by-step setup guide
- eSIM Compatible Phones — Is your phone supported?
- eSIM vs Physical SIM Card — Which is better for travel?
Frequently Asked Questions
Which eSIM actually offers unlimited data?
Holafly is the only major eSIM provider that offers truly unlimited data plans. In our testing across 12 countries, we used 40-80 GB per month without throttling or cutoffs. Other providers that advertise 'unlimited' typically have fair use policies or daily data caps. Trip.com offers daily data reset plans that are functionally unlimited on a per-day basis but have a daily cap (usually 500MB-2GB/day).
Is unlimited eSIM data really unlimited?
Holafly's unlimited plans are genuinely unlimited — we tested this extensively and never hit a hard cap. However, Holafly operates on 4G networks (no 5G), and in extremely congested areas you may experience brief periods of slower speeds due to network management. This is standard for any carrier and was rare in our experience.
Is an unlimited data eSIM worth it?
It depends on your usage. If you consistently use more than 15-20 GB per month (remote workers, video callers, families sharing one connection), Holafly unlimited at $19-46/month is excellent value. If you typically use under 10 GB, a capped plan from Saily ($3.99 for 1GB to $21.99 for 20GB) or Airalo is significantly cheaper. Do the math based on your actual usage.
How much data do I actually use while traveling?
Most casual travelers use 3-8 GB per month. Remote workers who make video calls use 10-20 GB. Heavy users who stream video, tether to a laptop, and share with others can easily use 30-80+ GB. Track your usage at home for a month before your trip to know where you fall. Our guide on how much data you need traveling breaks this down further.
Can I tether with an unlimited eSIM?
Holafly supports tethering (hotspot) on most plans, though it may not be advertised prominently. In our testing, tethering worked consistently. Trip.com daily data plans also work for tethering. Saily and Airalo capped plans support tethering as well. Always confirm tethering support before purchasing if this is important to you.
What is the cheapest unlimited data eSIM?
Holafly's unlimited data plans start around $6/day for popular destinations, with multi-week and monthly plans offering better per-day value ($19-46 for 7-30 days depending on the country). Trip.com's daily data reset plans start at $0.12/day but cap daily usage. For the absolute cheapest option that covers most travelers, a 20GB Saily plan at $21.99 works out to about $0.73/day.
Do unlimited eSIMs work for video calls and Zoom?
Yes. Holafly's unlimited eSIM easily handles video calls. Zoom and Google Meet require 3-5 Mbps for HD video, and Holafly consistently delivered 15-50 Mbps in our testing across 12 countries. We conducted dozens of video calls without issues. The main variable is local network congestion, not data limits.
Which countries does Holafly cover with unlimited data?
Holafly offers unlimited data eSIMs in 60+ countries including most of Europe, Southeast Asia, Japan, South Korea, the USA, Mexico, Brazil, Australia, and more. Coverage is growing. Check their website for the most current list, as they add new countries regularly.