Internet Speed Test in Seattle, WA

Internet Providers in Seattle, WA

The main broadband providers in Seattle, WA are Xfinity (Comcast), Quantum Fiber (Lumen), Wave/Astound, and Ziply Fiber. Wave/Astound and Ziply Fiber compete with Xfinity cable and Quantum Fiber in Seattle. Four major providers compete directly in parts of the city.

What Speeds to Expect in Seattle, WA

Seattle has strong broadband competition driven by the tech industry's demands. Ziply Fiber entered the market by acquiring former Frontier infrastructure and has been aggressively deploying fiber throughout the metro.

Typical measured speeds for Seattle, WA residents: 500 Mbps – 2 Gbps. Testing on wired Ethernet gives you the true connection speed — Wi-Fi introduces additional variables that can skew results by 10–30%.

• Fiber plans: Consistent symmetric speeds with equal upload and download — best for video calls, cloud uploads, and remote work
• Cable plans: Fast download but significantly slower upload; speeds can drop 20–40% during peak hours (7–10 PM)
• How to compare: Your measured speed should be 80–95% of your plan speed on a wired connection

Speed Test Tips for Seattle, WA Residents

• Test on Ethernet to establish a baseline without Wi-Fi interference
• Run tests at both morning (off-peak) and evening (peak) hours — cable networks often slow significantly during prime time
• Check upload speed, not just download — upload is the limiting factor for video calls, live streaming, and cloud backup
• Run 3+ consecutive tests and note the minimum — your calls happen at real-time, not average performance

Frequently Asked Questions

What internet providers serve Seattle?

Xfinity (Comcast) is the largest. Quantum Fiber, Wave/Astound, and Ziply Fiber all provide fiber. Seattle has four-provider competition in many neighborhoods—excellent by US standards.

Is fiber available in Seattle?

Yes—multiple fiber providers serve Seattle. Ziply Fiber covers much of the city. Wave/Astound and Quantum Fiber also have significant coverage. Check your address since provider coverage varies by neighborhood.

What speeds can Seattle residents expect?

Fiber subscribers access 500 Mbps – 2 Gbps. Xfinity cable delivers 300–1200 Mbps. Seattle ranks among the top 15 US cities for broadband quality, driven by tech industry demand.

What is Ziply Fiber and how did it enter the Seattle market?

Ziply Fiber acquired Frontier's Pacific Northwest properties in 2020 and invested heavily in fiber upgrades. It is now a significant competitor to Xfinity and has expanded fiber coverage substantially in Seattle, Portland, and other NW cities.