Best Internet Providers in Ontario, CA
All 8 providers, ranked by coverage, speed and customer ratings
Find internet availability by address in Ontario, CA
Ontario has 8 internet service providers, they are sorted by coverage, available speed, and customer rating from our unbiased internet provider report. Fiber, Cable, DSL, and Fixed Wireless internet are available in the city. Reviews are grouped by provider and the type of service they offer, covering all 4 available internet technologies in Ontario.
Ranks compare Ontario with the 305 US medium cities (100,000 to 249,999 people), the tiers of our fastest-cities rankings.
The Best Internet in Ontario, CA at a Glance
Ontario Internet Providers, Ranked by Coverage, Speed and Customer Ratings
Spectrum
Connection
Customer Rating
Fiber
Cable
Frontier
Connection
Customer Rating
Fiber
DSL
EarthLink
Connection
Customer Rating
Fixed Wireless
AT&T
Connection
Customer Rating
Fixed Wireless
Providers with less than 1% coverage in this city are excluded from the list. To see if one of these providers is available at your home, please use the address search above.
Speed and technology may vary by address for all providers. Please note we may have a financial relationship with some of the providers above, which does not impact the customer ratings displayed. Customer ratings listed above are national ratings, local Ontario ratings may vary and are shown below.
Who is the Best Internet Provider in Ontario, CA?
T-Mobile Home Internet is the best internet provider in Ontario based on California customer satisfaction ratings and reviews. Based on our extensive and unbiased survey, T-Mobile Home Internet had the best reviews at the local, state, and national levels versus all available providers in Ontario, making it a solid recommendation among providers with reviews. T-Mobile Home Internet is an option for 96.13% of the city.
Click here to get T-Mobile Home Internet
or call 1-833-601-2935
Which Providers are Available at my Home in Ontario?
Coverage changes block by block. Pick a provider and a technology to see where its service reaches: the darker the area, the larger the share of homes it covers. For your exact address, use the address search above.
Coverage map for each provider in Ontario
- Frontier - fiber coverage map
- Spectrum - cable coverage map
- GeoLinks - fixed wireless coverage map
- Verizon - fixed wireless coverage map
- Spectrum - fiber coverage map
- Onward - fiber coverage map
- T-Mobile Home Internet - fixed wireless coverage map
- AT&T - fixed wireless coverage map
- EarthLink - fixed wireless coverage map
- Frontier - dsl coverage map
How Ontario Compares to Places Its Size
Ontario's report card score is tied 87th of 305 and its connectivity index is tied 116th of 305.
| Measure | Ontario | Rank among US medium cities (100,000 to 249,999 people) | San Bernardino County | California | US | Leader |
|---|---|---|---|---|---|---|
| ISP Report Card inputs: what providers offer here | ||||||
| Fiber availability | 96.7% | 30th of 305 | 74.8% | 62.4% | 71.5% | Overland Park, KS (99.9%) |
| Average top speed | 6,674 Mbps | 34th of 305 | 5,050 Mbps | 3,834 Mbps | 3,486 Mbps | West Valley City, UT (9,708 Mbps) |
| Providers at a typical address | 6.1 | Tied 254th of 305 | 6.1 | 8 | 7.1 | Carolina, PR (12.6) |
| Connectivity index inputs: how much households need and use the internet | ||||||
| People per household | 3.4 | Tied 18th of 305 | 3.3 | 3.0 | 2.7 | Lakewood, NJ (5.1) |
| Workers who work from home | 10% | Tied 233rd of 305 | 11% | 17% | 15% | Frisco, TX (38%) |
| Homes with a computer, tablet or phone | 98% | Tied 47th of 305 | 97% | 97% | 96% | 46 places at 99% |
| Homes with internet | 95% | Tied 60th of 305 | 94% | 94% | 91% | Allen, TX and Cumming, GA and 8 more (98%) |
| Homes on fiber, cable or DSL | 79% | Tied 159th of 305 | 78% | 79% | 76% | Highlands Ranch, CO (92%) |
| More about the households here | ||||||
| Homes with a desktop or laptop | 83% | Tied 161st of 305 | 82% | 84% | 81% | Frisco, TX (96%) |
| Median household income | $97,427 | 126th of 305 | $93,949 | $111,728 | $93,246 | Sunnyvale, CA ($189,225) |
| Residents in school (6th grade to college) | 19% | Tied 49th of 305 | 18% | 17% | 16% | College Station, TX (57%) |
Fiber reaches 96.7% of homes in Ontario, against 74.8% across San Bernardino County and 62.4% across California. Households in Ontario are larger than the US average (3.4 people against 2.7); 10% of workers work from home (US 15%); and the median household income is $97,427 (US $93,246).
Our demographic data is sourced from the latest 5-year release of the American Community Survey by the US Census Bureau.
Fiber, 5G, Cable and DSL Internet in Ontario
Which Fiber Internet Providers are Available in Ontario?
Frontier Fiber in Ontario, CA
Availability:
94.5%
Customer Rating:
(119)
Avg. Download Speed
6,996 Mbps
Frontier Communications offers Fiber service to 94.5% of Ontario homes. Across the city, Frontier Fiber has speeds up to 6,996 Mbps, with speeds from 50 Mpbs up to 7,000 Mbps depending on the address. Upload speeds are symmetrical, meaning they are exactly the same as download speeds for Frontier Fiber. Frontier Fiber is rated about the same as other types of internet service available in Ontario from Frontier in terms of customer satisfaction.
Spectrum Fiber in Ontario, CA
Availability:
15.4%
Customer Rating:
(207)
Avg. Download Speed
1,000 Mbps
Spectrum offers Fiber service to 15.4% of Ontario homes. Across the city, Spectrum Fiber has speeds up to 1,000 Mbps
Onward Fiber in Ontario, CA
Availability:
8.0%
Customer Rating:
(1)
Avg. Download Speed
1,000 Mbps
Onward offers Fiber service to 8.0% of Ontario homes. Across the city, Onward Fiber is the only type of service available from the company, with speeds up to 1,000 Mbps
Which Fixed Wireless and LTE Internet Providers are Available in Ontario?
T-Mobile Home Internet Fixed Wireless in Ontario, CA
Availability:
96.1%
Customer Rating:
(342)
Avg. Download Speed
77 Mbps
T-Mobile Home Internet offers Fixed Wireless service to 96.1% of Ontario homes. Across the city, T-Mobile Home Internet Fixed Wireless is the only type of service available from the company, with speeds up to 77 Mbps, with speeds from 25 Mpbs up to 100 Mbps depending on the address. Upload speeds differ from download speeds, and are as low 3.0 and as high as 20, with an average of 15 Mbps throughout the city.
Verizon Fixed Wireless in Ontario, CA
Availability:
92.3%
Customer Rating:
(362)
Avg. Download Speed
264 Mbps
Verizon offers Fixed Wireless service to 92.3% of Ontario homes. Across the city, Verizon Fixed Wireless is the only type of service available from the company, with speeds up to 264 Mbps, with speeds from 25 Mpbs up to 300 Mbps depending on the address. Upload speeds differ from download speeds, and are as low 6.0 and as high as 20, with an average of 18 Mbps throughout the city.
EarthLink Fixed Wireless in Ontario, CA
Availability:
83.0%
Customer Rating:
(4)
Avg. Download Speed
43 Mbps
EarthLink offers Fixed Wireless service to 83.0% of Ontario homes. Across the city, EarthLink Fixed Wireless is the only type of service available from the company, with speeds up to 43 Mbps, with speeds from 25 Mpbs up to 100 Mbps depending on the address. Upload speeds differ from download speeds, and are as low 3.0 and as high as 20, with an average of 7.0 Mbps throughout the city.
AT&T Fixed Wireless in Ontario, CA
Availability:
83.0%
Customer Rating:
(205)
Avg. Download Speed
43 Mbps
AT&T offers Fixed Wireless service to 83.0% of Ontario homes. Across the city, AT&T Fixed Wireless is the only type of service available from the company, with speeds up to 43 Mbps, with speeds from 25 Mpbs up to 100 Mbps depending on the address. Upload speeds differ from download speeds, and are as low 3.0 and as high as 20, with an average of 7.0 Mbps throughout the city.
GeoLinks Fixed Wireless in Ontario, CA
Availability:
34.1%
Customer Rating:
(0)
Avg. Download Speed
954 Mbps
GeoLinks offers Fixed Wireless service to 34.1% of Ontario homes. Across the city, GeoLinks Fixed Wireless is the only type of service available from the company, with speeds up to 954 Mbps, with speeds from 200 Mpbs up to 1,000 Mbps depending on the address. Upload speeds are symmetrical, meaning they are exactly the same as download speeds for GeoLinks Fixed Wireless.
Which Cable Internet Providers are Available in Ontario?
Spectrum Cable in Ontario, CA
Availability:
98.9%
Customer Rating:
(1739)
Avg. Download Speed
1,000 Mbps
Spectrum offers Cable service to 98.9% of Ontario homes. Across the city, Spectrum Cable has speeds up to 1,000 Mbps
Which DSL Internet Providers are Available in Ontario?
Frontier DSL in Ontario, CA
Availability:
2.3%
Customer Rating:
(58)
Avg. Download Speed
10 Mbps
Frontier Communications offers DSL service to 2.3% of Ontario homes. Across the city, Frontier DSL has speeds up to 10 Mbps
Internet in Ontario by Neighborhood and ZIP Code
Fiber reaches from 94.7% of homes in 91761 to 99.2% in 91762. Each row links to that place’s page.
Neighborhoods in Ontario
| Neighborhood | People | Homes with fiber | Average top speed | Providers at a typical address | Report card | Connectivity |
|---|---|---|---|---|---|---|
| Downtown Ontario | 8,004 | 98.4% | 6,871 Mbps | 5.9 | B+ | 66/100 |
ZIP codes in Ontario
How Ontario Compares to Nearby Places
The 10 places nearest to Ontario that have their own pages are all within 8 miles. Among them, Montclair has the most homes with fiber (99.4%) and Alta Loma the fewest (11.7%); Ontario has 96.7%.
| Place | People | Homes with fiber | Average top speed | Providers at a typical address | Report card | Connectivity |
|---|---|---|---|---|---|---|
| Ontario (this page) | 177,355 | 96.7% | 6,674 Mbps | 6.1 | B+ | 78/100 |
| Pomona | 154,267 | 96.5% | 6,508 Mbps | 6.1 | B+ | 71/100 |
| Rancho Cucamonga | 151,058 | 53.6% | 3,954 Mbps | 5.7 | B- | 84/100 |
| Chino | 97,138 | 93.6% | 6,561 Mbps | 5.6 | B+ | 86/100 |
| Upland | 82,582 | 83.4% | 5,953 Mbps | 6.1 | B | 86/100 |
| Chino Hills | 79,721 | 94.6% | 6,632 Mbps | 5.4 | B | 91/100 |
| Eastvale | 69,363 | 57.2% | 2,983 Mbps | 5.2 | C+ | 93/100 |
| Claremont | 39,315 | 71.2% | 4,214 Mbps | 5.8 | B- | 79/100 |
| Montclair | 38,378 | 99.4% | 5,407 Mbps | 6.3 | A- | 71/100 |
| Mira Loma | 26,240 | 50.7% | 2,940 Mbps | 6.9 | B- | 77/100 |
| Alta Loma | 22,682 | 11.7% | 1,485 Mbps | 4.9 | C- | 85/100 |
Who is the Fastest Internet Provider in Ontario?
Based on both FCC data and unbiased customer ratings, the fastest internet in the city comes from Frontier Communications.
Data Reported to FCC by ISPs: Average Maximum Available in Ontario
| Frontier Communications | 7,000 |
|---|---|
| Spectrum | 1,000 |
| GeoLinks | 1,000 |
| Onward | 1,000 |
| Verizon | 300 |
| Viasat | 100 |
| T-Mobile Home Internet | 100 |
| AT&T | 100 |
| EarthLink | 100 |
| HughesNet | 25 |
How fast is your internet?
Test your connection here and see it next to the speeds providers advertise in Ontario. It takes about 20 seconds and, on a fast line, can move a few hundred MB of data.
Customer Ratings for Ontario Internet Providers
Based on 456 reviews from California internet customers, T-Mobile Home Internet is the best internet service provider for Ontario residents. T-Mobile Home Internet was rated at an average of 4.11 out of 5 in our report for overall customer satisfaction. Frontier Communications wins for second-place in California, with 3.71 out of 5 stars and 95.5% coverage in Ontario.
At a national level, based on 4351 national reviews for any of the providers listed above, T-Mobile Home Internet is rated higher than any other provider, with a rating of 4.02 out of 5.
Local, State, and National Ratings for all Ontario Internet Providers
The table below shows average customer ratings from customers in Ontario, California, and customers throughout the country.
| ISP / Tech Type | Ontario Overall | California Overall | National Overall | For Service | ||
|---|---|---|---|---|---|---|
| AT&T | (0) | (119) | (1051) | View Plans | ||
| EarthLink | (0) | (2) | (15) | View Plans | ||
| Frontier | (0) | (51) | (177) | View Plans | ||
| HughesNet | (0) | (1) | (25) | View Plans | ||
| T-Mobile Home Internet | (0) | (27) | (342) | View Plans | ||
| Verizon | (0) | (28) | (816) | View Plans | ||
| Viasat | (0) | (1) |  (12) | View Plans | ||
| Onward | (1) | (1) | (1) | View Plans | ||
| Spectrum | (2) | (228) | (1949) | View Plans | ||
| GeoLinks | (0) | (0) | (0) | View Plans |
Customer Ratings for Internet Provider Speeds in Ontario
Based on data reported by Ontario ISPs to the FCC, the fastest speeds in the city are available through Frontier Communications. The company offers speeds up to 7,000 Mbps in Ontario. Therefore, the average customer can get up to 6,921 Mbps if they’re willing to purchase the fastest subscription tier available at their homes.
Additionally, actual customers rated their satisfaction with internet speed highest with Frontier Communications. This indicates Frontier reliably delivers speeds expected by the customer based on the plan they are paying for.
| ISP / Tech Type | Ontario Speed | California Speed | National Speed | For Service | ||
|---|---|---|---|---|---|---|
| Onward | (1) | (1) | (1) | View Plans | ||
| AT&T | (0) | (119) | (1051) | View Plans | ||
| EarthLink | (0) |  (2) | (15) | View Plans | ||
| Frontier | (0) | (51) | (177) | View Plans | ||
| HughesNet | (0) |  (1) | (25) | View Plans | ||
| T-Mobile Home Internet | (0) | (27) | (342) | View Plans | ||
| Verizon | (0) | (28) | (816) | View Plans | ||
| Viasat | (0) | (1) | (12) | View Plans | ||
| Spectrum | (2) | (228) | (1949) | View Plans | ||
| GeoLinks | (0) | (0) | (0) | View Plans |
Who is the Cheapest Internet Provider in Ontario?
Of the providers in Ontario, customers rate T-Mobile Home Internet the best for price. Data comes from customers rating their satisfaction with pricing: in Ontario where enough of them have reviewed a provider, otherwise across California or the country. This feedback is valuable because it considers price changes and whether the speeds paid for are worth it.
T-Mobile Home Internet is rated 4.26 out of 5 for price, which is higher than the average across all internet providers in the country. Verizon is rated second for affordability, with an average price rating of 3.75 out of 5.
The table below shows how customers in Ontario, California, and the United States rated the affordability of their internet service.
Rated Affordability in Ontario
| ISP / Tech Type | Ontario Affordability | California Affordability | National Affordability | For Service | ||
|---|---|---|---|---|---|---|
| Onward | (1) | (1) | (1) | View Plans | ||
| AT&T | (0) | (119) | (1051) | View Plans | ||
| EarthLink | (0) | (2) | (15) | View Plans | ||
| Frontier | (0) | (51) | (177) | View Plans | ||
| HughesNet | (0) | (1) | (25) | View Plans | ||
| T-Mobile Home Internet | (0) |  (27) | (342) | View Plans | ||
| Verizon | (0) | (28) | (816) | View Plans | ||
| Viasat | (0) | (1) | (12) | View Plans | ||
| Spectrum | (2) | (228) | (1949) | View Plans | ||
| GeoLinks | (0) | (0) | (0) | View Plans |
Customer Reviews for Internet Service Providers in California
Customer Reviews
ethan l
Spectrum Cable
April 21, 2026 The speeds are fast for regular web browsing but gaming and streaming can cause some issues
Michael G
Onward Fiber
March 03, 2025 Speed is overall fast, particularly with streaming and browsing. The service does have a few quirks that I have not been able to clearly explain to their support team — there are instances of certain connections timing out, such as in games for iOS. Another issue is random shut downs in service due to hardware failures within their network.
Jordan F.
Spectrum Cable
January 20, 2023 I do believe that my internet provider artificially slows down VPNs. I have had two paid, high-end VPN services and both of them are capped at a certain MBP/s for both download and upload. There have been a few occasions in which spectrum raised the price without telling me as well. Other than that, I have been happy with the service.
Steve
ting Fiber
November 13, 2026 Slow, 1/10th the speed they advertised
Robert
Verizon Fixed Wireless
November 10, 2026 Was cut off with .out notice due to upgrade and was not provided connection to upgrade from the same location (tower). Causing further problems in service and added cost.
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Which ISP Should You Choose in Ontario?
The right ISP for you depends upon your needs, but in general we can make the following suggestions:
- The best all-around internet service provider in Ontario is T-Mobile Home Internet.
- The fastest internet provider should be Frontier Communications. Considering speed for the money and reliability in speeds, Frontier Communications may be a better choice based on real-world local customer feedback.
- The most affordable internet provider in Ontario is T-Mobile Home Internet.
- Viasat, Spectrum, and HughesNet has the broadest coverage in Ontario, available to 99.4% of homes, and is most likely to cover your home. To find out exactly what’s available at your home, please use our address search tool.