---
title: "Sea-Tac Wi-Fi: is it free, time limits and how to connect"
url: "https://kilobat.app/airport-wifi/seattle"
description: "Seattle–Tacoma Airport’s Wi-Fi is free in all public areas on SEA-FREE-WIFI. You accept the terms and sometimes watch a short ad first."
---

Airport Wi-Fi guide
**Seattle, United States**

# Sea-Tac Wi-Fi: Is it free, how long it lasts and how to connect

Seattle–Tacoma International Airport offers free Wi-Fi in all its public areas. The network is called `SEA-FREE-WIFI`.

Checked 6 November 2026 · from Port of Seattle’s own pages

Departures · Wi-FiSeattle

Seattle–Tacoma International Airport

Network

`SEA-FREE-WIFI`

Status

Free

Time limit

Not published

Sign-in

Accept terms, sometimes an ad

[How to connect ↓](https://kilobat.app/airport-wifi/seattle#connect)

[Network **`SEA-FREE-WIFI`**](https://kilobat.app/airport-wifi/seattle#connect)[Free Wi-Fi Free](https://kilobat.app/airport-wifi/seattle#free)[Time limit **Not published**](https://kilobat.app/airport-wifi/seattle#free)[How you sign in **Accept terms, sometimes an ad**](https://kilobat.app/airport-wifi/seattle#connect)[Paid option **None published**](https://kilobat.app/airport-wifi/seattle#premium)[Based here **Alaska Airlines, Delta Air Lines**](https://kilobat.app/airport-wifi/seattle#airlines)

Step by step

## How to connect to Sea-Tac Wi-Fi

- Watch an ad

1. Join the network `SEA-FREE-WIFI`.
2. Accept the terms and conditions on the page that opens.
3. Occasionally you will see a brief ad before the internet opens.

**Kilobat**

SEA-FREE-WIFI

This Wi-Fi wants you to sign in

Open sign-in page

### Sign-in page didn’t open? Free:

A VPN, iCloud Private Relay or your own DNS can hide the airport’s page. Kilobat notices the network is waiting and opens the page in one click.

Free

## What’s free at Sea-Tac

- Wi-Fi is free of charge in all public areas of the airport.
- The Port of Seattle doesn’t publish a time limit, a data cap or a speed.

As of November 2026.

Paid

## Faster or longer Wi-Fi

The Port of Seattle doesn’t publish a paid or faster tier.

### In the lounges

The Port lists free Wi-Fi among the amenities of **The Club at SEA**, near Gate A12 and above Gate S10.

As of November 2026.

Tips

## When Sea-Tac Wi-Fi won’t play along

### From Sea-Tac

- The airport’s ASL interpreter service and the Aira service for blind and low-vision travellers both run over `SEA-FREE-WIFI`.

### On a Mac

- **No sign-in page?** Open `http://captive.apple.com` in Safari. A plain http page can be redirected to the airport’s sign-in page; an https one can’t.
- **Pause what hides it.** A VPN, iCloud Private Relay or your own DNS can keep the page from opening. Turn them off, sign in, then turn them back on.
- **Forget and rejoin.** A network the Mac already knows may not show the sign-in window again. Forget it in System Settings › Wi-Fi and join once more.
- **Look behind your windows.** macOS opens the sign-in page in a small window of its own, which can open behind the others.

More in [Wi-Fi login page not appearing on a Mac](https://kilobat.app/guides/captive-portal-not-appearing) and [hotel and airport Wi-Fi login on a Mac](https://kilobat.app/hotel-wifi-login-mac).

Airlines

## Airlines based at Sea-Tac

Boarding soon? Here’s what the Wi-Fi is like once you’re on the plane.

[**Alaska Airlines***Alaska Airlines in-flight Wi-Fi →*](https://kilobat.app/in-flight-wifi/alaska-airlines)[**Delta Air Lines***Delta Air Lines in-flight Wi-Fi →*](https://kilobat.app/in-flight-wifi/delta-air-lines)

At the gate with Kilobat

## Airport Wi-Fi on a Mac, without the guesswork

Kilobat is a Mac menu-bar app that shows what each app sends and holds back what can wait. At Sea-Tac:

- ### It spots the sign-in page Free:

  When the page doesn’t open by itself, the menu bar says **This Wi-Fi wants you to sign in**, with **Open sign-in page**. When a sign-in runs out, it says **Logged out by the Wi-Fi’s sign-in page** instead of blaming DNS.
- ### It warns you before time runs out Pro:

  Kilobat learns how long sign-ins last on each network, and warns you about five minutes before the next logout. While you’re signed in, the menu shows the time left.
- ### It holds back what can wait Pro:

  Airport Wi-Fi is shared by a terminal full of people. Switch to the Travel profile and only the apps you allowed connect. Mark the network **Metered** and Kilobat switches to Travel by itself.
- ### It checks the line before a call Free:

  The stutter test pings the internet every 50 ms for 20 seconds and shows the spikes an average hides. Check before meetings warns you five minutes before a call if something would freeze it; with Pro, one button pauses the culprits.

[Download for Mac ↓](https://kilobat.app/downloads/Kilobat-1.33.1.dmg?via=site)

```
brew install seifip/kilobat/kilobat
```

Pro is $29 once for two Macs, with a 7-day free trial and 14-day refunds. How the sign-in checks work: [hotel and airport Wi-Fi login on a Mac](https://kilobat.app/hotel-wifi-login-mac).

**Kilobat**

SEA-FREE-WIFI

Signed in · about 40 min left Pro:

Profile**Travel**

Dropbox*held*

Software Update*held*

Zoom**allowed**

Kilobat now

SEA-FREE-WIFI will log you out in 5 min

Open sign-in page

## Questions

**Is the Wi-Fi at Sea-Tac free?**

Yes. The Port of Seattle says Wi-Fi is free of charge in all public areas of the airport.

**What is the Wi-Fi network called at Sea-Tac?**

The network is `SEA-FREE-WIFI`. You accept the terms, and sometimes watch a brief ad, before you get online.

**Is there a time limit on Sea-Tac Wi-Fi?**

The Port of Seattle doesn’t publish a time limit or a data cap.

**Why won’t the Sea-Tac Wi-Fi sign-in page open on my Mac?**

A VPN, iCloud Private Relay or your own DNS can keep it from opening. Turn them off, open `http://captive.apple.com` in Safari, and turn them on again once you’re signed in. Kilobat shows **Open sign-in page** when a network is waiting for you.

## Sources

- [Port of Seattle: Traveling with kids at SEA (free Wi-Fi)](https://www.portseattle.org/sea/traveling-with-kids)
- [Port of Seattle: ASL, auditory and vision assistance](https://www.portseattle.org/page/asl-auditory-and-vision-assistance)
- [Port of Seattle: Lounges at SEA](https://www.portseattle.org/services-amenities/airport-lounges)
- [Alaska Airlines: Investor relations](https://news.alaskaair.com/investor-relations/)
- [Delta: Corporate stats and facts](https://news.delta.com/corporate-stats-and-facts)

Checked on 6 November 2026.

## More airport Wi-Fi guides

[ATL**Atlanta Airport** (Atlanta)Free](https://kilobat.app/airport-wifi/atlanta)[DEN**Denver Airport** (Denver)Free](https://kilobat.app/airport-wifi/denver)[DFW**DFW** (Dallas–Fort Worth)Free](https://kilobat.app/airport-wifi/dallas-fort-worth)[JFK**JFK** (New York)Free](https://kilobat.app/airport-wifi/new-york-jfk)

[All 26 airport Wi-Fi guides](https://kilobat.app/airport-wifi) · [In-flight Wi-Fi by airline](https://kilobat.app/in-flight-wifi)

## Get your Mac ready for Sea-Tac.

[Download for Mac ↓](https://kilobat.app/downloads/Kilobat-1.33.1.dmg?via=site)

```
brew install seifip/kilobat/kilobat
```