PDX · Portland International Airport
Portland, OR. All airports.
Share of flights 15+ min late, by month
departures
arrivals
usual for the month (departures)
Jan 2015 → Jul 2026; gridlines 10/20/30/40%
Recent months — departures
| Month | Flights | Late 15+ | vs usual | Cancelled | Avg min | Main cause |
|---|---|---|---|---|---|---|
| Jul 2026 | 6,304 | 20.7% | +0.4 | 0.9% | 15 | Late aircraft |
| Jun 2026 | 6,024 | 22.0% | +4.0 | 0.6% | 15 | Late aircraft |
| May 2026 | 5,535 | 16.0% | +2.5 | 0.4% | 11 | Airline |
| Apr 2026 | 5,040 | 14.5% | -0.6 | 0.5% | 10 | Late aircraft |
| Mar 2026 | 5,113 | 16.0% | +3.8 | 0.9% | 12 | Airline |
| Feb 2026 | 4,182 | 13.7% | +0.4 | 0.7% | 9 | Airline |
| Jan 2026 | 4,537 | 14.9% | +1.0 | 1.4% | 11 | Airline |
| Dec 2025 | 5,124 | 21.3% | +3.8 | 0.6% | 14 | Late aircraft |
| Nov 2025 | 4,976 | 14.3% | +2.9 | 1.5% | 10 | Late aircraft |
| Oct 2025 | 5,493 | 14.8% | +4.1 | 0.6% | 10 | Airline |
| Sep 2025 | 5,269 | 12.8% | +1.2 | 0.2% | 8 | Airline |
| Aug 2025 | 5,685 | 16.4% | +0.4 | 0.7% | 12 | Airline |
| Jul 2025 | 5,864 | 21.8% | +5.3 | 1.2% | 16 | Late aircraft |
| Jun 2025 | 5,640 | 20.7% | +3.5 | 0.6% | 14 | Late aircraft |
| May 2025 | 5,201 | 13.5% | +1.5 | 0.3% | 9 | Air traffic |
| Apr 2025 | 4,763 | 13.1% | -2.0 | 0.3% | 8 | Late aircraft |
| Mar 2025 | 4,760 | 12.2% | +0.6 | 0.3% | 9 | Late aircraft |
| Feb 2025 | 3,983 | 15.0% | +1.7 | 1.5% | 10 | Late aircraft |
| Jan 2025 | 4,401 | 12.6% | -1.3 | 0.9% | 10 | Airline |
| Dec 2024 | 5,065 | 17.5% | +0.8 | 0.3% | 12 | Late aircraft |
| Nov 2024 | 4,873 | 11.4% | -1.1 | 0.5% | 8 | Air traffic |
| Oct 2024 | 5,258 | 10.5% | -0.7 | 0.3% | 7 | Airline |
| Sep 2024 | 5,244 | 12.3% | +1.6 | 0.2% | 9 | Airline |
| Aug 2024 | 5,542 | 16.6% | +0.6 | 0.7% | 12 | Late aircraft |
Airlines here, May 2025 (departures)
| Airline | Flights | Late | Canc. |
|---|---|---|---|
| Spirit | 64 | 7.8% | 0.0% |
| Hawaiian | 62 | 8.1% | 0.0% |
| Delta | 637 | 9.9% | 0.0% |
| United | 566 | 10.6% | 0.4% |
| SkyWest | 936 | 10.8% | 0.3% |
| Alaska | 1,661 | 12.6% | 0.4% |
| Frontier | 102 | 16.0% | 2.0% |
| Allegiant | 48 | 16.7% | 0.0% |
| Southwest | 717 | 19.2% | 0.3% |
| JetBlue | 31 | 22.6% | 0.0% |
| American | 376 | 23.6% | 0.8% |
Airlines with 30+ departures that month.
Worst days on record
| Date | Flights | Late | Canc. |
|---|---|---|---|
| 2022-12-23 | 175 | 100% | 96% |
| 2024-01-17 | 124 | 94% | 57% |
| 2021-02-13 | 110 | 90% | 74% |
| 2023-02-23 | 169 | 93% | 56% |
| 2022-12-24 | 128 | 88% | 59% |
| 2021-02-14 | 115 | 73% | 61% |
| 2016-12-09 | 162 | 73% | 31% |
| 2024-01-14 | 142 | 76% | 11% |
| 2017-01-11 | 149 | 72% | 22% |
| 2017-01-08 | 142 | 53% | 54% |
| 2021-02-15 | 123 | 65% | 28% |
| 2021-12-28 | 142 | 69% | 12% |
Departures; ranked by share late or cancelled.
FAA programs, last 90 days
None recorded.