Seattle, WA · Airport profile
SEA
Seattle-Tacoma International Airport
SEA right now
Current operating conditions, from live sources only.
Aviation weather is not currently a factor. FAA operational data — ground stops, ground delay programs and closures — is not currently available to FlyerIntel.
FAA operational data is not currently available to FlyerIntel. Why
Minimal operational impact. Conditions are not a notable factor for operations right now.
Forecast issued 21:02Z.
UpdatedSecurity wait data is not currently available for SEA. Why
Parking data is not currently available for SEA. Why
FlyerIntel shows live values only where a permitted source provides them. Sections without data are left empty rather than estimated.
Airport reliability
Departures from SEA, July 2023 – June 2026.
Better than 85% of major US airports covered by FlyerIntel (36 compared)
Calculated from 493,992 flights. How this is calculated
Source: US DOT Bureau of Transportation Statistics · Data covering July 2023 – June 2026
Best time to fly from SEA
On-time arrival rate by scheduled local departure time.
Flights departing 5–9 AM arrived on time 86.6% of the time, against 76.5% for 6–9 PM departures — a gap of 10.1 percentage points.
By departure window
By departure hour
Source: FlyerIntel analysis of US DOT BTS data · July 2023 – June 2026 · Buckets with fewer than 120 flights are not scored.
Weekly and seasonal patterns
By day of week
Tuesday is historically the most reliable day and Friday the least, a gap of 5.9 percentage points.
By month
July is historically the weakest month and October the strongest, a spread of 9.8 percentage points.
Source: FlyerIntel analysis of US DOT BTS data · July 2023 – June 2026
Airlines at SEA
Departure performance by operating carrier. Regional flights are reported by the carrier that operated them, not by the mainline brand.
| Carrier | Departures | On time | Cancelled | Median delay |
|---|---|---|---|---|
| Alaska Airlines AS | 233,099 | 76.4% | 1.00% | -2 min |
| Delta Air Lines DL | 96,776 | 83.5% | 0.67% | -8 min |
| SkyWest Airlines OO | 82,238 | 84.8% | 0.50% | -6 min |
| United Airlines UA | 26,945 | 82.0% | 1.08% | -8 min |
| Southwest Airlines WN | 24,316 | 74.0% | 0.30% | -1 min |
| American Airlines AA | 18,249 | 79.5% | 1.65% | -8 min |
| Frontier Airlines F9 | 4,288 | 73.0% | 1.75% | -3 min |
| Hawaiian Airlines HA | 2,813 | 66.6% | 1.49% | 4 min |
| JetBlue B6 | 2,163 | 62.9% | 1.48% | 3 min |
| Spirit Airlines NK | 1,771 | 76.9% | 0.90% | -6 min |
| Envoy Air MQ | 1,334 | 84.7% | 0.00% | -10 min |
Source: FlyerIntel analysis of US DOT BTS data · July 2023 – June 2026 · Carriers with fewer than 500 departures are not listed.
Routes from SEA
Ranked by FlyerIntel Route Reliability Score.
Most reliable
Busiest routes
| Destination | Flights | On time | Score |
|---|---|---|---|
| SEA → LAX Los Angeles | 22,513 | 82.8% | 79 |
| SEA → PHX Phoenix | 21,750 | 79.7% | 76 |
| SEA → ANC Anchorage | 21,642 | 75.8% | 71 |
| SEA → SFO San Francisco | 20,106 | 69.9% | 55 |
| SEA → DEN Denver | 19,613 | 78.3% | 70 |
| SEA → LAS Las Vegas | 18,738 | 77.7% | 71 |
| SEA → ORD Chicago | 15,693 | 77.6% | 67 |
| SEA → PDX Portland | 15,623 | 80.8% | 78 |
| SEA → GEG Spokane | 15,597 | 80.5% | 77 |
| SEA → DFW Dallas–Fort Worth | 15,129 | 76.4% | 61 |
| SEA → SAN San Diego | 13,860 | 79.0% | 74 |
| SEA → SJC San Jose | 13,449 | 81.7% | 78 |
Source: FlyerIntel analysis of US DOT BTS data · July 2023 – June 2026 · Only routes with at least 750 flights are ranked.
Reliability over time
On-time arrival rate for departures, by month.
Source: FlyerIntel analysis of US DOT BTS data · July 2023 – June 2026
Data and sources
Historical statistics
Every historical figure on this page is calculated by FlyerIntel from US DOT Bureau of Transportation Statistics on-time performance records covering July 2023 – June 2026, comprising 493,992 departures from SEA. A flight counts as delayed when it arrives 15 or more minutes after schedule.
Live conditions
Aviation weather comes from the NOAA Aviation Weather Center. Operational events come from the FAA where available. FlyerIntel shows the age of every live value and does not display data it cannot currently retrieve.
Latest observation for SEA: METAR KSEA 292253Z 19008G17KT 10SM SCT040 SCT065 BKN100 22/07 A3005 RMK AO2 SLP181 T02170072 $ (issued ).