Which Internet Providers Have Unlimited Data?

Switching to an internet provider with unlimited data is possibly your easiest and most cost-effective option. An unlimited data plan ensures you never have to worry about how much data you've eaten through in a month ever again.

Wait, wait. Before you get all excited about the possibility of unlimited data, you’ll want to check and see if any of the ISPs we listed above are available in your neighborhood.

An easy way to do this is with our zip code tool. Just enter your zip code, and we’ll pull up a list of all the internet providers in your area. Easy, peasy.

Or, if you need a deeper dive into each carrier, we've made it easy with our comparison reviews like Spectrum vs. Frontier or Google Fiber vs. Verizon 5G Home Internet.

If you do find an internet provider that offers unlimited data near you, you should also check to see if it’s offering any internet deals. This could include a contract buyout to help you avoid any early termination fees your old ISP might try to slap on. (Spectrum is one ISP that consistently offers a contract buyout deal.)

If you’re stuck with an ISP that doesn’t just offer unlimited data, no questions asked, don’t hang your head just yet. You might be able to add data to your plan—or the overage fees may not be too exorbitant.

Here are some popular ISPs that offer data add-ons and how to get them.

Xfinity recently bumped its data cap up to 1.2 TB for all internet plans. While the extra data is nice, you might still find yourself hitting that cap each month. If you use too much data and you’ve used up your grace period (Xfinity won’t charge you for data overages the first month it happens), you’ll see an overage fee on your bill:

• Xfinity data cap: 1.2 TB
• Xfinity data overage fee: $10.00 per 50 GB, up to $100.00 a month

If that sounds like you most months, you can always opt in for unlimited data. There are a few ways to do this with Xfinity, depending on whether you already have its xFi Gateway modem:

CenturyLink offers unlimited data caps on all its internet plans, say goodbye to monthly overage fees.

• CenturyLink data cap: Unlimited
• CenturyLink overage fee: None

Cox updated its data cap to 1.25 TB in mid-2020. That’s great, but we still wish it was unlimited data.

• Cox data cap: 1.25 TB
• Cox data overage fee: $10.00 per 50 GB

If you find that much data isn’t enough to keep your home business running smoothly while your kiddos stream Paw Patrol every afternoon, you do have a couple of options:

HughesNet’s satellite internet plans all come with a data cap ranging from 15 GB to 200 GB, depending on which plan you choose. Those data caps are on the lower side, so it’s important to keep an eye on your data usage if you’re using HughesNet.

• HughesNet data cap: 15–200
• HughesNet data overage result: Slowed speeds of 1–3 Mbps

If you go over that data cap, your internet stays online, but your speeds will drop to 1 to 3 Mbps. That’s just a hair faster than dial-up. (Remember how mind-numbingly slow that was?)

If you do go over your data cap and don't want to deal with slower speeds, you can add data to your HughesNet plan, or you can hop online during the Bonus Zone. The HughesNet Bonus Zone gives you 50 GB of extra data to use between the hours of 2 a.m. to 8 a.m. (your local time).

XTREAM powered by Mediacom’s data caps range from 300 GB to 6 TB. Officially, XTREAM powered by Mediacom states that it doesn’t have data caps but uses data allowances instead. Okay, let’s not mince words: these are basically the same thing, but what we think XTREAM powered by Mediacom is getting at is that your internet won’t shut off if you go over your data allowance.

Instead, you’ll be charged for an extra 50 GB of data, whether you exceed your data allowance by 1 GB or a whole 50 GB.

• XTREAM powered by Mediacom data cap: 300 GB–6 TB
• XTREAM powered by Mediacom data overage fee: $10.00 per 50 GB

So, let’s say your XTREAM powered Mediacom plan comes with 1 TB (1,000 GB) of data, but you used 1,001 GB of data last month. You’ll pay $10.00 for 50 GB of extra data to cover your overage.

And if you used 1,050 GB of data last month, you’ll still pay $10.00 for 50 GB of extra data. With that in mind, it’s a good idea to keep track of your XTREAM powered by Mediacom data usage.

Viasat advertises its satellite internet plans as “unlimited,” but each plan comes with a different data threshold that ranges from 35 to 1,000 GB of priority data.

• Viasat data cap: 35–1,000 GB
• Viasat data overage result: Speeds slowed to 1–5 Mbps during times of high traffic

You won’t be charged extra if you go over your Viasat data limit, but instead, your internet speeds could slow down during times of high traffic. And by slow, we mean anywhere between 1 to 5 Mbps. Viasat’s basically saying, “Hey, you had your turn in the fast lane. Now, let someone else take your spot.”

You can add more high-speed data to Viasat's plans if you don't want to deal with slower speeds for the rest of the month. We’ve got more info on this, plus how to track your data usage, in our Viasat data guide.

Curious about how you can curb your data usage? Here’s a list of some everyday online activities and how much data they use on average.

• The best cable internet service provider with unlimited data is Spectrum Internet. You can get 30–1,000Mbps of download speed for $20–$90 per month. 
• The best fiber internet provider with unlimited data is AT&T Fiber. This ISP offers download speeds of 300–5,000Mbps for $55–$250 per month. 
• The best runner-up cable internet provider with unlimited data is Astound Broadband, powered by RCN, with plans ranging from $25–$70 for download speeds of 300–1,500Mbps. 
• The best runner-up fiber internet service with unlimited data is Verizon Fios Home Internet. This provider's plans are $50–$90 per month for 300 Mbps, 500 Mbps, or gig speeds. 

Our Reviews.org team tests our home internet networks regularly, along with reaching out to folks living in different areas to test out ISPs we don’t have access to. 

We've been testing, researching ISPs, and writing reviews for 8+ years. With this, we have a solid understanding of what makes an internet service provider worthy of your home, such as these unlimited data internet services.