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San Antonio, TX Internet Providers

Internet Providers in San Antonio, TX 2026

San Antonio is AT&T's home market — the most extensively fiber-wired major city in Texas. AT&T Fiber is available across most of the city and suburbs from $55/mo with no data cap. Spectrum cable provides competition with no data cap and broad coverage. T-Mobile 5G Home adds a no-contract $50/mo alternative. Most San Antonio addresses have at least two real choices.

Last updated: March 2026 · Prices reflect published ISP rates. Check your address for exact availability.

3
Major ISPs serving San Antonio
AT&T Fiber, Spectrum, T-Mobile
$55
Starting price — AT&T Fiber
300 Mbps, no cap, no contract
None
Data caps in San Antonio
Neither AT&T nor Spectrum cap data
AT&T's
Home market since 2005
Best fiber coverage of any TX city
San Antonio's advantage: no data caps anywhere. Unlike Houston (where Xfinity's 1.2 TB cap is a constant issue), San Antonio's main providers — AT&T Fiber and Spectrum — both have no data cap on any plan. A household with 4K streaming, gaming, and remote work pays a flat monthly rate with no overage fees. This makes San Antonio one of the most consumer-friendly internet markets in Texas.

All San Antonio Internet Providers Compared

Provider Type Speeds Available Price Range Data Cap Contract
AT&T Fiber Best overall Fiber 300 Mbps – 5 Gbps (symmetrical) $55 – $225/mo None Month-to-month
Spectrum Cable 300 Mbps – 1 Gbps $50 – $90/mo (promo) None None required
T-Mobile 5G Home 5G Fixed 100 – 350 Mbps (varies) $50/mo flat None Month-to-month
AT&T Internet (DSL) DSL Up to 100 Mbps $55/mo None Month-to-month

Prices as of March 2026. Spectrum promotional pricing typically increases after 12 months. AT&T Fiber pricing is standard rate with no promotional cliff. Confirm current rates at provider websites.

San Antonio ISP Breakdown

AT&T Fiber — Best overall
$55/mo
300 Mbps – 5 Gbps symmetric
AT&T has the deepest fiber infrastructure of any Texas city in San Antonio. The extensive coverage reflects AT&T's historical roots here — this was Southwestern Bell territory before becoming SBC, then AT&T. Symmetric speeds, no cap, and flat pricing make it the clear choice where available.
  • No data cap at any tier
  • Symmetric upload = download speeds
  • Price doesn't spike after 12 months
  • No equipment rental fee
  • Most extensive coverage of any SA ISP
Not universal — some newer developments lag by 12–18 months
Spectrum — Best where AT&T isn't
$50/mo
300 Mbps – 1 Gbps download
Spectrum's big advantage over Xfinity (the dominant cable provider in Houston) is no data cap. San Antonio Spectrum customers never face overage fees. Upload speeds are asymmetric (much slower than download) and promo rates expire after 12 months, but it's a solid choice where fiber isn't yet available.
  • No data cap
  • No equipment rental fee (modem included)
  • Broad coverage across metro
Promo rates expire; upload speeds much lower than AT&T Fiber
T-Mobile 5G Home
$50/mo
100 – 350 Mbps (location varies)
No installation, no contract, no data cap. Works well across most of San Antonio. Best used as a backup where AT&T Fiber hasn't arrived yet — or as a primary for renters and households that need flexibility to move without early termination fees.
  • Flat $50/mo — no rate changes ever
  • No contract, self-install
  • 15-day money-back trial
Variable speeds depending on tower proximity and congestion
AT&T Fiber Plans
$55–$225
All tiers symmetric, no cap
AT&T Fiber offers more speed tiers in San Antonio than most markets. The 300 Mbps plan at $55/mo is the best value for most households. Multi-gig plans (2 Gbps, 5 Gbps) are available for power users and small businesses at $110–225/mo.
  • 300 Mbps at $55/mo: best value tier
  • 500 Mbps at $65/mo: for larger households
  • 1 Gbps at $80/mo: for multi-device homes
  • 2 Gbps at $110/mo: for power users
Check address — fiber may not be at every SA location yet

San Antonio Metro Coverage by Area

Area AT&T Fiber Spectrum T-Mobile 5G Home Notes
Central San Antonio ✓ Widely available ✓ Available ✓ Strong coverage AT&T Fiber dominant
New Braunfels ✓ Available ✓ Available ✓ Available Fast-growing market, good fiber options
Schertz ✓ Available ✓ Available ✓ Available Strong coverage throughout
Converse ✓ Available ✓ Available ✓ Available Good options; check specific address
Universal City ✓ Available ✓ Available ✓ Available Near Randolph AFB, well served
Leon Valley ✓ Available ✓ Available ✓ Available AT&T Fiber well established
Helotes ◑ Partial ✓ Available ✓ Available Newer areas may still be on DSL
Live Oak ✓ Available ✓ Available ✓ Available Full metro coverage
San Marcos ✓ Available ✓ Available ✓ Available College market; good fiber access
Seguin ◑ Partial ◑ Partial ✓ Available Smaller market; check specific address

Coverage varies by address within each area. Always verify your specific address at chooseisp.com or att.com/internet.

Which San Antonio ISP Is Right for You?

🏠
Best overall
AT&T Fiber
No cap, symmetric speeds, flat rate, widest fiber coverage in Texas. The default choice for most San Antonio households.
💰
Tightest budget
T-Mobile 5G Home or Spectrum
T-Mobile at $50/mo flat never changes. Spectrum promo at $50/mo is comparable but increases after 12 months. AT&T Fiber at $55/mo is only $5/mo more with better specs.
💻
Working from home
AT&T Fiber 300+
300 Mbps symmetric upload is essential for reliable video calls. Spectrum cable's upload is 20–35 Mbps — fine for occasional calls but can struggle with all-day video conferencing.
🎮
Gaming
AT&T Fiber
Fiber's low latency and symmetric speeds give AT&T Fiber an edge for online gaming. No data cap means large game downloads never trigger overage fees.
🏠
Renting or moving soon
T-Mobile 5G Home
No installation required, no early termination fee, brings the gateway with you. Perfect for renters or households planning to relocate within 12–18 months.
👴
Seniors & fixed income
AT&T Access ($30/mo)
AT&T Access Internet is available to qualifying households for $30/mo for 100 Mbps fiber — enough for HD video streaming and video calls. See low-income-internet-texas for eligibility.

Frequently Asked Questions

What internet providers are available in San Antonio, TX?
San Antonio's main providers are AT&T Fiber (fiber, extensive coverage, no data cap, from $55/mo), Spectrum (cable, broad coverage, no data cap, from ~$50/mo promo), and T-Mobile 5G Home ($50/mo flat, no contract). San Antonio is AT&T's home market, so fiber coverage is more aggressive here than in most US cities. Use chooseisp.com to see exactly what's available at your address.
Why is AT&T Fiber so widely available in San Antonio?
San Antonio is AT&T's home market. The region was historically served by Southwestern Bell (which became SBC Communications, then merged with AT&T in 2005). AT&T has prioritized fiber buildout in San Antonio — coverage here is more extensive than Houston, Dallas, or Austin on a percentage-of-addresses basis. Most San Antonio neighborhoods within city limits have AT&T Fiber available.
Does Spectrum have a data cap in San Antonio?
No. Spectrum in San Antonio has no data cap on any plan. Neither does AT&T Fiber. This makes San Antonio better off than Houston (where Xfinity's 1.2 TB cap is a constant issue). Both primary San Antonio ISPs are cap-free.
Which is better in San Antonio — AT&T Fiber or Spectrum?
AT&T Fiber wins for most households: symmetric speeds (upload = download), no data cap, consistent pricing without a promotional cliff, and typically better latency. Spectrum is the right choice where AT&T Fiber isn't yet available. Both have no data cap — so either provider is a decent option for heavy users.
What's the cheapest internet in San Antonio?
T-Mobile 5G Home at $50/mo flat is the cheapest with no promotional rate changes. Spectrum starts around $50/mo promo but rises after 12 months. AT&T Fiber 300 Mbps at $55/mo is only $5/mo more and provides better performance. Low-income households may qualify for AT&T Access at $30/mo — see chooseisp.com/low-income-internet-texas.
Is AT&T Fiber available in San Antonio suburbs?
Yes, most San Antonio suburbs have strong AT&T Fiber coverage: New Braunfels, Schertz, Converse, Universal City, Leon Valley, and Live Oak all have AT&T Fiber widely available. Helotes and Seguin have partial coverage — check your specific address. Newer developments may lag by 12–18 months as fiber infrastructure catches up.
How do I find which internet providers serve my San Antonio address?
Enter your address at chooseisp.com. Even with San Antonio's excellent fiber coverage, availability varies by block. AT&T Fiber builds street by street — coverage maps can show your neighborhood as served while your specific address isn't yet connected. Address-level verification is the only reliable check. If AT&T Fiber isn't available today, set a fiber alert at chooseisp.com.

Related Guides

AT&T Fiber vs Spectrum → Low-Income Internet in Texas → Houston, TX ISP Guide → Austin, TX ISP Guide → Dallas, TX ISP Guide → Best Internet for WFH → Negotiate Your Internet Bill →

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