GCI vs. AT&T vs. Alaska Communications
Alaska has three big home internet choices: GCI cable, AT&T's 5G Internet Air and Alaska Communications fiber. Here's what each costs, what you give up, and which one fits your address.
If Alaska Communications fiber reaches you, take it: it's cheaper than GCI at 250 Mbps, has no data caps and uploads far faster, as long as you're happy with a 24-month agreement. Otherwise GCI is the fastest and most widely available option, but watch its data allowances. AT&T Internet Air is the cheapest at $55/mo with unlimited data, if AT&T's 5G is strong at your address.
Side by side
Which one can you get?
Your address decides more than your preferences do. Work through it in this order:
- Alaska Communications fiber is only in select neighborhoods of Anchorage, Soldotna and Fairbanks. If it reaches you, it's the best value of the three.
- GCI cable reaches most homes in Anchorage, Mat-Su, Fairbanks, Juneau, Kenai, Ketchikan, Sitka and other towns. It's the default choice where ACS only offers DSL.
- AT&T Internet Air is sold where AT&T's 5G network has capacity. It's a good fit for light-to-medium use, renters and anyone who wants no contract and no data cap at a low price.
- Rural areas and villages often get none of the above at full speed. Compare Starlink there.
Check all three at your address before you order; see internet providers in Alaska for coverage by city.
What it costs over two years
At 1 Gig the two wired providers cost the same, and the difference is the data cap and upload speed: ACS fiber is unlimited and symmetrical, GCI Fastest includes 1 TB and uploads at 40 Mbps.
Data caps
This is the biggest difference between them. GCI's standalone plans include 250 GB (Fast), 800 GB (Faster) or 1 TB (Fastest), and extra data costs $10 per 10, 40 or 75 GB. A household that streams in 4K can use 250 GB in a couple of weeks. GCI's red Unlimited 2.5 Gig plan has no cap, and GCI+ bundles with a mobile line unlock unlimited data on 500 Mbps and up.
Alaska Communications and AT&T Internet Air both include unlimited data. AT&T's terms say that in rare cases, if your usage adds to network congestion, it will greatly reduce your speed for at least 30 minutes. More on how allowances work in data caps explained.
Upload speeds and working from home
If you upload a lot (video calls, cloud backups, posting video), fiber wins clearly. Alaska Communications Fiber 500, 1000 and 2500 upload as fast as they download. GCI tops out at 75 Mbps up on its 2.5 Gig plan and 10 Mbps on the $89.99 plan; AT&T Internet Air uploads at 8–30 Mbps. For most video calls 10 Mbps is enough per person, but a busy household will feel it.
Bundles and phone lines
- GCI+ pairs internet with one unlimited mobile line, free for 12 months (a $10/mo credit). It also lifts data caps on 500 Mbps and up.
- AT&T takes money off Internet Air when you have an eligible AT&T unlimited phone plan.
- Alaska Communications doesn't sell mobile service; it sold its wireless business to GCI in 2015.
Reliability and outages
All three depend on the fiber that connects Alaska to the lower 48 and links towns along the coast. Subsea cable breaks have slowed service in Juneau (March 2025) and near Unalaska (December 2025), and the Quintillion cable that serves Nome and the North Slope is used by GCI, Alaska Communications and others. When a cable breaks, providers reroute traffic over satellite and microwave links, which is slower. If your GCI connection is slow day to day, see why GCI internet is slow.
Wired service (GCI cable, ACS fiber) is steadier hour to hour than 5G, whose speed depends on your signal and how busy the tower is. GCI publishes typical peak-hour latency of 8–9 ms; 5G home internet usually runs higher. A backup connection is worth considering if you work from home.
Questions to ask before ordering
- GCI: which plan is my address eligible for, how much data does it include, and would GCI+ make it unlimited?
- AT&T: is Internet Air available at my exact address, and what speed range does AT&T expect there?
- Alaska Communications: is my address fiber, FiberNow, FiWi or DSL? What is the price after the 24-month term, and is there an early termination fee?
- All: are installation and WiFi equipment included, and what fees appear on the first bill?
Questions
Is GCI or AT&T better in Alaska?
For most homes, GCI. AT&T doesn't sell fiber in Alaska, only Internet Air, a 5G home service at $55/mo with 90–300 Mbps and unlimited data. GCI cable reaches about three in four Alaska homes with plans from 250 Mbps to 2.5 Gbps. AT&T is the better buy if you use a lot of data on a budget, because GCI's $89.99 plan includes only 250 GB.
Is Alaska Communications better than GCI?
Where Alaska Communications fiber reaches (select neighborhoods of Anchorage, Soldotna and Fairbanks), usually yes: Fiber 250 is $79.99 against GCI's $89.99, every plan has unlimited data, and uploads match downloads from 500 Mbps up. The trade-off is a 24-month agreement.
What is the cheapest internet in Alaska?
AT&T Internet Air at $55/mo with AutoPay and paperless billing, where AT&T's 5G covers your address. Among wired plans, Alaska Communications Fiber 250 at $79.99 (24-month agreement) undercuts GCI Fast at $89.99.
Does AT&T have fiber in Alaska?
No. In Alaska AT&T sells Internet Air, its 5G home internet, and AT&T mobile service. AT&T Fiber isn't offered there.
Which Alaska provider has no data caps?
Alaska Communications (every plan), AT&T Internet Air and GCI's red Unlimited 2.5 Gig plan. GCI's other standalone plans include 250 GB to 1 TB; GCI+ bundles with a mobile line unlock unlimited data on 500 Mbps and up.
Sources (5)
- GCI internet plans and Broadband Facts labels, gci.com/internet, checked Oct 9, 2026
- Alaska Communications home internet plans and alaskacommunicationsfiber.com, checked Oct 9, 2026
- AT&T Internet Air plan and terms, att.com/internet/air, checked Oct 2026
- FCC Broadband Data Collection coverage (GCI share of Alaska homes)
- Broadband Breakfast (Jan 2026) and The Nome Nugget on subsea fiber breaks
Prices and offers change often; confirm at your address before you order. How we research
Read the full reviews: GCI, Alaska Communications, AT&T Internet Air and Starlink.