SEA Today
Decent day. Departures at 78%, arrivals worse at 57%. Afternoon flights ran 21 points better than early morning. Fly 3pm - 6pm if you can. That window has been running at 81%.
Pick Your Window
Afternoon vs Early Morning is a 21-point swing at SEA. The afternoon block runs at 81%. If you have any say in your departure time, this is the biggest thing you can control.
Through the Day
Morning started OK at 69%. Hit 50% around 7am, peaked at 94% around 9am. A 44-point swing from best to worst today.
vs Last Week
This week is 3 points better on departures (69% vs 66%). Arrivals roughly the same. Fri was the worst day, Tue the best.
The Bigger Picture
SEA has been bouncing between 36% and 91%. Best day was Mar 4 at 91%. Worst was Mar 13 at 36%. The norm is 75-81%, which is just how SEA runs. Today is right in line with the average.
About SEA Delays
Seattle–Tacoma International Airport (SEA) is currently experiencing moderate delays with 78% on-time departures and 57% on-time arrivals. This data updates every 5 minutes from FAA sources.
Seattle–Tacoma International Airport has averaged 69% 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 US airports with real-time delay tracking. Data includes departure and arrival on-time percentages, updated every 5 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.