Airports › Portland (PWM) › August 2025
Airport month · August 2025
Portland International Jetport in August 2025
BTS: A flight is counted as on time if it arrived less than 15 minutes after its scheduled time. Only carriers with at least 0.5 percent of domestic scheduled passenger revenue report.
In August 2025, reporting carriers scheduled 1,309 domestic departures from Portland International Jetport (PWM). 81.4% left less than 15 minutes late and 79.1% reached their destination on time; 1.3% were cancelled.
Nationally that month, 76.8% of flights departed on time and 76.3% arrived on time, so PWM departures were 4.6 points above the national departure figure.
A year earlier, in August 2024, the airport had 1,465 departures with 73.9% leaving on time: a change of +7.5 points, with flights down 11%.
Flights arriving at PWM that month were on time 78.9% of the time (1,310 scheduled arrivals).
Of the delay minutes that carriers assigned to a BTS cause category that month, late-arriving aircraft 36%, national aviation system 33% and air carrier 26%.
- On time 79.1%
- Arrived 15+ minutes late 19.3%
- Cancelled 1.3%
- Diverted 0.4%
August 2025 against a year earlier, the airport's year and the nation
| Measure | Aug 2025 | Aug 2024 | PWM, 12 months to Jul 2026 | All reported flights, Aug 2025 |
|---|---|---|---|---|
| Departed on time | 81.4% | 73.9% | 80.0% | 76.8% |
| Arrived on time | 79.1% | 69.5% | 78.2% | 76.3% |
| Cancelled | 1.3% | 4.5% | 2.6% | 1.1% |
| Average departure delay (late minutes only) | 13.9 min | 19.1 min | 17.2 min | 17.6 min |
| Scheduled departures a day | 44 | 49 | 30 | 20,079 |
| Scheduled departures | 1,309 | 1,465 | 10,925 | 602,378 |
Airlines that month
| Reporting carrier | Flights | Share | On time | Avg arrival delay | Cancelled |
|---|---|---|---|---|---|
| YX Republic Airline | 376 | 29% | 85.1% | 2.8 min | 1.1% |
| AA American Airlines | 266 | 20% | 76.7% | 6.5 min | 0.8% |
| WN Southwest Airlines | 197 | 15% | 81.7% | 4.2 min | 0.0% |
| DL Delta Air Lines | 167 | 13% | 79.0% | 6.0 min | 1.2% |
| UA United Airlines | 115 | 9% | 71.3% | 12.1 min | 3.5% |
| OH PSA Airlines | 76 | 6% | 77.6% | -1.6 min | 2.6% |
| B6 JetBlue Airways | 62 | 5% | 72.6% | 5.9 min | 3.2% |
| OO SkyWest Airlines | 45 | 3% | 64.4% | 29.5 min | 2.2% |
| F9 Frontier Airlines | 5 | 0% | 60.0% | 29.0 min | 0.0% |
Busiest routes that month
| Route | Cities | Flights | On time | Avg arrival delay | Cancelled |
|---|---|---|---|---|---|
| PWM–ORD | Portland to Chicago | 177 | 75.7% | 16.7 min | 2.8% |
| PWM–BWI | Portland to Baltimore | 135 | 83.0% | 5.1 min | 0.0% |
| PWM–EWR | Portland to Newark | 122 | 81.1% | 4.8 min | 1.6% |
| PWM–PHL | Portland to Philadelphia | 119 | 77.3% | 7.0 min | 0.8% |
| PWM–DCA | Portland to Washington | 114 | 77.2% | 7.8 min | 0.9% |
| PWM–IAD | Portland to Washington | 109 | 86.2% | -1.1 min | 0.0% |
| PWM–LGA | Portland to New York | 86 | 91.9% | -5.4 min | 2.3% |
| PWM–CLT | Portland to Charlotte | 79 | 72.2% | 3.7 min | 1.3% |
| PWM–ATL | Portland to Atlanta | 75 | 81.3% | 0.9 min | 1.3% |
| PWM–JFK | Portland to New York | 62 | 72.6% | 5.9 min | 3.2% |
| PWM–DTW | Portland to Detroit | 61 | 72.1% | 17.9 min | 1.6% |
| PWM–DFW | Portland to Dallas/Fort Worth | 35 | 82.9% | -6.6 min | 2.9% |
By scheduled departure hour
Delay causes
Questions and answers
How many flights left PWM on time in August 2025?
81.4% of 1,309 scheduled domestic departures left less than 15 minutes late, and 79.1% reached their destination on time. The national figures that month were 76.8% and 76.3%.
How does that compare with a year earlier?
In August 2024, 73.9% of 1,465 departures left on time and 4.5% were cancelled, against 81.4% and 1.3% in August 2025.
Provenance
Source: Bureau of Transportation Statistics, Reporting Carrier On-Time Performance, file for August 2025; public domain. Domestic scheduled flights by reporting carriers, totals and averages only. The site's data runs through July 2026. Full record for PWM · methodology · corrections.