Portland International (PDX) Delays and On-Time Departures
Portland, OR · ranked 89th of 333 airports for on-time departures
Data through July 2026 · Last updated October 18, 2026
83.3% of the 63,282 flights scheduled to depart Portland (PDX) in the last 12 months left on time, 5.9 points above the US average of 77.4%.
That ranks 89th of 333 US airports tracked on this site, with 0.7% of departures cancelled.
Delta Air Lines was the most punctual airline here, with 89.3% of departures on time.
September has been the best month (87% on time) and Friday the weakest day of the week (82%).
Best time of day to fly out of Portland (PDX)
On-time departure % by scheduled departure hour (local time), last 24 months.
Show the numbers
| Departure hour | On time | Cancelled | Flights |
|---|---|---|---|
| 12am–1am | 83.8% | 1.0% | 823 |
| 1am–2am | Limited data | 1 | |
| 5am–6am | 94.9% | 0.4% | 6,333 |
| 6am–7am | 94.7% | 0.5% | 6,805 |
| 7am–8am | 90.0% | 0.7% | 17,042 |
| 8am–9am | 90.0% | 0.6% | 5,325 |
| 9am–10am | 88.9% | 0.7% | 4,969 |
| 10am–11am | 86.1% | 0.7% | 13,826 |
| 11am–12pm | 83.8% | 0.6% | 6,508 |
| 12pm–1pm | 82.5% | 0.6% | 4,256 |
| 1pm–2pm | 79.1% | 0.6% | 6,896 |
| 2pm–3pm | 82.7% | 0.5% | 10,835 |
| 3pm–4pm | 77.5% | 0.5% | 4,209 |
| 4pm–5pm | 76.5% | 0.4% | 2,872 |
| 5pm–6pm | 78.8% | 0.4% | 10,871 |
| 6pm–7pm | 75.2% | 0.4% | 3,240 |
| 7pm–8pm | 79.1% | 1.0% | 4,805 |
| 8pm–9pm | 75.3% | 0.7% | 2,634 |
| 9pm–10pm | 77.9% | 1.0% | 5,508 |
| 10pm–11pm | 79.5% | 0.9% | 2,619 |
| 11pm–12am | 77.0% | 2.1% | 3,499 |
Airlines at PDX ranked by on-time departures
Last 12 months. Airlines with fewer than 30 departures are marked “limited data”.
| Airline | On-time departures | On-time arrivals | Cancelled | Departures |
|---|---|---|---|---|
| Delta Air Lines | 89.3% | 90.1% | 1.1% | 7,194 |
| SkyWest Airlines | 87.7% | 85.7% | 0.6% | 10,528 |
| United Airlines | 85.1% | 81.5% | 0.6% | 6,627 |
| Alaska Airlines | 84.9% | 83.2% | 0.7% | 23,990 |
| Spirit Airlines | 82.9% | 85.5% | 0.0% | 70 |
| Frontier Airlines | 79.8% | 79.0% | 1.4% | 865 |
| Allegiant Air | 77.7% | 72.0% | 0.2% | 396 |
| American Airlines | 77.6% | 80.4% | 1.9% | 4,504 |
| Southwest Airlines | 72.1% | 76.5% | 0.3% | 8,559 |
| Envoy Air | 69.4% | 80.6% | 0.0% | 36 |
| JetBlue | 69.2% | 69.9% | 3.6% | 138 |
| Hawaiian Airlines | 61.1% | 57.2% | 1.3% | 375 |
80%+ good 70–79.9% fair <70% poor
Best day to fly out of PDX
On-time departures by day, 24 months.
Best month to fly out of PDX
On-time departures by month, 24 months.
Holiday travel at Portland (PDX)
On-time departures during holiday periods compared with all other days, last 24 months.
| Period | On-time departures | vs other days | Cancelled | Flights |
|---|---|---|---|---|
| Thanksgiving week (Tue before to Mon after) | 83.1% | -2.9 pts | 0.6% | 2,343 |
| Christmas & New Year (Dec 20 - Jan 3) | 76.8% | -9.2 pts | 0.7% | 5,072 |
| Summer peak (Jun 15 - Aug 15) | 78.8% | -7.2 pts | 0.9% | 23,997 |
| All other days | 86.0% | — | 0.6% | 92,464 |
Monthly on-time departure trend at PDX
On-time departure % each month, with the 12-month US average for reference.
Routes from Portland (PDX)
Every route from PDX with its own page, by number of flights (last 12 months, on-time arrivals).