Seattle–Tacoma International Airport (SEA) delays and on-time record

Seattle, Washington KSEA #12 US airport by passengers

Live airport-wide delay programs from the FAA, the weather that causes them, and how each airline has actually performed at SEA.

FAA status: No delays reported Updated 1 min ago
Weather now: VFR 48°F Observed 48 min ago
Late departures: 24.0%May 2026 to July 2026
Security line: No recent reportsAdd yours

FAA delay status for SEA

The FAA is not reporting a ground stop, ground delay program or other delay at SEA right now.

Source: FAA National Airspace System Status, checked 1 min ago. Airline-specific delays are not shown here.

Current conditions at SEA

VFR

48°F9°C

Good visibility and high cloud base. Normal operations are typical.

Wind: 100° 5 mph
Visibility: 10+ mi
Clouds: FEW 11,000 ft
Ceiling: None
Pressure: 29.96 inHg

METARMETAR KSEA 111553Z 10004KT 10SM FEW110 09/06 A2996 RMK AO2 SLP152 T00890056

Source: NOAA Aviation Weather Center. Observed 48 min ago.

Active weather alerts

Frost AdvisoryFrost Advisory issued October 11 at 7:34AM PDT until October 12 at 8:00AM PDT by NWS Seattle WA

On-time performance at SEA

Based on 46,180 departures from May 2026 to July 2026. A flight counts as late when it leaves 15 or more minutes after schedule.

24.0%Departures late

21.1%Arrivals late

0.62%Cancelled

14.7 minAverage departure delay

On-time performance by airline at SEA
Airline	Departures	Late	Cancelled
Alaska Airlines	21,557	26.0%	0.45%
Delta Air Lines	8,780	18.7%	0.80%
SkyWest Airlines	7,633	15.5%	0.21%
United Airlines	2,709	24.3%	0.85%
Southwest Airlines	2,510	45.0%	0.24%
American Airlines	2,058	28.8%	1.36%
Frontier Airlines	398	23.6%	1.51%
Envoy Air	327	17.7%	0.00%
JetBlue Airways	208	63.5%	5.29%

Source: Bureau of Transportation Statistics, On-Time Performance of reporting carriers. Smaller regional carriers and some airlines are not included.

Late departures by month

AprMayJunJul

How delays work at SEA

A ground stop holds flights bound for SEA at their origin airports. A ground delay program spaces arrivals out so the airport is not overloaded. Departure and arrival delay messages describe the average wait the FAA expects. None of these tell you whether your own flight is late, so always check your airline as well.

Local tips

If you are flying to Alaska or the Pacific Northwest, check the weather: low cloud and winter storms can affect operations.
Link light rail avoids the traffic on I-5 and is the better choice at rush hour.
The satellites are reached by train, so factor several extra minutes into your connection.