SEA Today
Decent day, better than the weekly average. Departures at 78%, arrivals worse at 60%. Early morning flights ran 17 points better than midday. Fly 5am - 9am if you can. That window has been running at 80%.
What This Means for You
Mostly normal at SEA. 78% on-time means roughly 1 in 5 flights is late. If you have a tight connection, add buffer time. Afternoon departures tend to stack up.
If you can choose your departure time: early morning flights (5am - 9am) run at 80%. Midday (12pm - 3pm) drops to 63%. That is a 17-point difference from the same airport on the same day.
Portland International Airport (PDX) is 129 miles away and running 80% today. If your route is available from both airports, PDX is the better bet right now.
Airline Performance at SEA
Virgin Australia is the most reliable carrier at SEA with 63% on-time. Condor runs 11%. That is a 52-point spread. If you have a choice, the airline matters.
SEA Flight Board
Live departures and arrivals at Seattle–Tacoma International Airport.
| Status | Airline | Flight | Destination | Sched | Updated | Gate |
|---|---|---|---|---|---|---|
Pick Your Window
Early Morning vs Midday is a 17-point swing at SEA. The early morning block runs at 80%. If you have any say in your departure time, this is the biggest thing you can control.
Through the Day
Morning started OK at 75%. Hit 55% around 1am, peaked at 83% around 3am. Evening is thinning out and improving to 74%. A 28-point swing from best to worst today.
vs Last Week
Down 6 points from last week (66% vs 72%). Sun was the worst day, Wed the best.
The Bigger Picture
SEA has been bouncing between 48% and 83%. Best day was Sep 6 at 83%. Worst was Jul 16 at 48%. The norm is 64-70%, which is just how SEA runs. Today's 78% is a good day by SEA standards.
About SEA Delays
Seattle–Tacoma International Airport (SEA) is currently experiencing moderate delays with 78% on-time departures and 60% on-time arrivals. This data updates every 15 minutes from FAA sources.
Seattle–Tacoma International Airport has averaged 66% on-time departures this week, making it frequently delayed. Performance varies by time of day and weather conditions.
Seattle–Tacoma International Airport is one of 179 FAA-monitored airports with real-time delay tracking. Data includes departure and arrival on-time percentages, updated every 15 minutes, with historical trends available for the past 90 days.
Nearby alternatives include YYJ (Victoria International Airport), YVR (Vancouver International Airport) and PDX (Portland International Airport). When SEA is experiencing delays, these airports may offer better on-time performance.
Early morning departures from Seattle–Tacoma International Airport typically have the highest on-time rates. Delays tend to accumulate throughout the day as cascading effects from earlier disruptions compound. Check the 24-hour trend chart above for today's pattern.