SEA delays today: Seattle-Tacoma International has an on-time departure rate of about 80%. The FAA airport status for SEA typically shows an average delay of 57 minutes when departures are delayed. The most common reason for departure delays here is the airline (crew, maintenance, or boarding). Roughly 0.9% of flights are cancelled. The typical taxi-out time from gate to takeoff is about 21 minutes. The current TSA wait is about about 5 min. The fastest time through security is 4 AM (about 5 min). The busiest period is 11 AM (24-30 minutes).
Source: BTS, FAA. Updated July 2026.SEA Seattle Delays & Airport Status
Seattle-Tacoma International(Sea-Tac)
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Delay Stats
Full breakdown →80% on timeAvg delay 57 min
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Security Lines
Full details →~5 minBest: 4 AM (about 5 min)
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Plan & Explore
Departures here are on time most of the time. About 80% of flights leave within 15 minutes of schedule.
The most common reason for departure delays here is the airline (crew, maintenance, or boarding).
Planes often wait a while before takeoff. The typical wait from gate to takeoff is about 21 minutes.
This airport frequently foggy (~9 fog days/month), rainy (~15 precip days/month).
Among major airlines, F9 has the most complaints (23.2/100k) while WN has the fewest (1.5/100k).
Accurate?
SEA departure performance by month
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Airlines at SEA
On-time departure rate from DOT data
SkyWest Airlines84%
Delta Air Lines83%
United Airlines83%
Spirit Airlines81%
Alaska Airlines78%
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