AT&T Internet Air vs. Xfinity
One is 5G wireless, the other cable. Here's what you give up and gain with each.
Choose Xfinity for faster, steadier speeds and plans from $45/mo with a 5-year price guarantee and unlimited data on new plans. Choose AT&T Internet Air ($55/mo) if you want a simple self-setup gateway, are moving soon, or Xfinity's price at your address is higher.
Side by side
Speed and consistency
Xfinity's cable network delivers its plan speed more consistently, especially in the evening, and offers multi-gig tiers. Internet Air speeds depend on your signal and how busy the local tower is, and uploads are slower. For a household with several people streaming and on video calls, Xfinity is usually the better connection.
Price over time
Internet Air's price won't go up after the first year. Xfinity's newer plans carry a 5-year price guarantee, but customers on older plans see year-two increases. Compare the price you'll pay in year two, not just the first month. See the 2026 Price Lock Index.
Which to choose
- Xfinity for families, remote work and gaming.
- Internet Air for one or two people, short-term rentals, or as a backup next to cable.
- AT&T Fiber beats both if it reaches you: 300 Mbps is $50/mo. See Internet Air vs. AT&T Fiber.
Reviews: AT&T Internet Air · Xfinity.
What it costs over three years
Setup
- Internet Air: self-setup in minutes; place the gateway where the app shows the strongest signal.
- Xfinity: self-install kit if your home already has an active cable line, or a technician visit.
If you're switching
- Keep your old service until the new one is installed and working.
- Ask Xfinity which price-guarantee plan you're eligible for; older plans carry the 1.2 TB data cap and year-two increases.
- Return the old gateway promptly to avoid an unreturned-equipment fee.
Questions
Is AT&T Internet Air faster than Xfinity?
Usually not. Xfinity cable is faster and more consistent at most addresses; Internet Air depends on your 5G signal.
Does AT&T Internet Air have a data cap?
No. Internet Air has unlimited data and no annual contract.
Is AT&T Internet Air cheaper than Xfinity?
Not usually. Xfinity's 5-year price guarantee plans start from $45/mo; Internet Air is $55/mo.
Sources (1)
- Plan pages and Broadband Facts labels from AT&T Internet Air, Xfinity, AT&T Fiber, checked Oct 2026
Prices and offers change often; confirm at your address before you order. How we research
Jean founded ShopHighSpeed after trying to find one straight answer about business internet in his own town. He has been a Comcast and Verizon Fios customer, and ranks providers on what they actually deliver, not on what they advertise.