AirlineCSNumber · directory
SEA

Seattle-Tacoma International — Delays & On-Time Performance

Seattle, WA · Live daily prediction · Updated July 8, 2026

Before you head to SEA, check the live outlook below — and if your flight is already disrupted, jump straight to your airline’s phone line at the bottom of this page.

Today’s on-time outlook for SEA

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Prediction from the Amadeus travel network, refreshed daily.

What disrupts SEA

Alaska's fortress hub (with a fast-growing Delta operation) handles Pacific Northwest weather better than its reputation suggests — low ceilings slow things, but rarely stop them. Winter windstorms and the occasional snow event are the real disruptors.

Local knowledge: Seattle snow is rare but paralyzing when it lands — if snow is forecast, act on the first schedule-change email immediately.

Flight delayed or cancelled at SEA? Do this

  1. Start in the airline’s app: accept the first workable rebooking, then work the phone for something better.
  2. Join the phone call-back queue while you walk to the service desk — whichever answers first wins. Numbers below connect directly to the airlines.
  3. Before you accept a voucher, spend three minutes on your rights — see the cancellation guide and compensation guide.
  4. Pull your flight up in the free status tool — gate and delay data lands there before the terminal boards refresh.

Major airlines at SEA — direct phone lines

Every number in our directory is the airline’s own published line — free, no middleman.

SEA delay questions

Is SEA delayed right now?

The prediction card at the top of this page refreshes daily from the Amadeus network. For a specific flight, check our live flight status tool — airport-wide averages matter less than your aircraft’s actual rotation. Seattle snow is rare but paralyzing when it lands — if snow is forecast, act on the first schedule-change email immediately.

Which airlines dominate SEA?

Alaska Airlines and Delta Air Lines carry the largest share of traffic at Seattle-Tacoma International. Their direct customer service lines are listed above — during disruption, call the airline, not the airport.

Who do I call about a cancelled flight at SEA?

Always the airline operating your flight — the airport cannot rebook you. For example, Alaska Airlines answers at 1-800-252-7522; every other carrier’s number is in our free directory.