Airports › Portland (PWM) › December 2025
Airport month · December 2025
Portland International Jetport in December 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 December 2025, reporting carriers scheduled 546 domestic departures from Portland International Jetport (PWM). 74.7% left less than 15 minutes late and 71.1% reached their destination on time; 2.2% were cancelled.
Nationally that month, 72.0% of flights departed on time and 71.9% arrived on time, so PWM departures were 2.7 points above the national departure figure.
A year earlier, in December 2024, the airport had 785 departures with 82.5% leaving on time: a change of −7.8 points, with flights down 30%.
Flights arriving at PWM that month were on time 67.5% of the time (547 scheduled arrivals).
Of the delay minutes that carriers assigned to a BTS cause category that month, air carrier 40%, national aviation system 28% and late-arriving aircraft 24%.
- On time 71.1%
- Arrived 15+ minutes late 26.6%
- Cancelled 2.2%
- Diverted 0.2%
December 2025 against a year earlier, the airport's year and the nation
| Measure | Dec 2025 | Dec 2024 | PWM, 12 months to Jul 2026 | All reported flights, Dec 2025 |
|---|---|---|---|---|
| Departed on time | 74.7% | 82.5% | 80.0% | 72.0% |
| Arrived on time | 71.1% | 81.5% | 78.2% | 71.9% |
| Cancelled | 2.2% | 0.5% | 2.6% | 1.5% |
| Average departure delay (late minutes only) | 20.9 min | 20.0 min | 17.2 min | 21.2 min |
| Scheduled departures a day | 18 | 26 | 30 | 19,410 |
| Scheduled departures | 546 | 785 | 10,925 | 582,304 |
Airlines that month
| Reporting carrier | Flights | Share | On time | Avg arrival delay | Cancelled |
|---|---|---|---|---|---|
| YX Republic Airline | 166 | 30% | 71.7% | 13.4 min | 1.8% |
| WN Southwest Airlines | 108 | 20% | 73.1% | 8.1 min | 0.9% |
| AA American Airlines | 101 | 18% | 75.2% | 12.3 min | 0.0% |
| DL Delta Air Lines | 51 | 9% | 68.6% | 19.2 min | 0.0% |
| OO SkyWest Airlines | 39 | 7% | 56.4% | 63.1 min | 2.6% |
| UA United Airlines | 34 | 6% | 79.4% | 14.9 min | 2.9% |
| OH PSA Airlines | 33 | 6% | 63.6% | 17.1 min | 18.2% |
| B6 JetBlue Airways | 14 | 3% | 64.3% | 12.6 min | 0.0% |
Busiest routes that month
| Route | Cities | Flights | On time | Avg arrival delay | Cancelled |
|---|---|---|---|---|---|
| PWM–BWI | Portland to Baltimore | 108 | 73.1% | 8.1 min | 0.9% |
| PWM–DCA | Portland to Washington | 90 | 73.3% | 12.5 min | 3.3% |
| PWM–EWR | Portland to Newark | 77 | 75.3% | 11.5 min | 3.9% |
| PWM–LGA | Portland to New York | 76 | 64.5% | 23.4 min | 1.3% |
| PWM–ORD | Portland to Chicago | 62 | 75.8% | 22.7 min | 1.6% |
| PWM–DTW | Portland to Detroit | 40 | 65.0% | 35.9 min | 0.0% |
| PWM–ATL | Portland to Atlanta | 32 | 65.6% | 19.4 min | 0.0% |
| PWM–CLT | Portland to Charlotte | 31 | 80.6% | 9.5 min | 0.0% |
| PWM–MCO | Portland to Orlando | 14 | 64.3% | 12.6 min | 0.0% |
| PWM–PHL | Portland to Philadelphia | 13 | 46.2% | 32.1 min | 23.1% |
| PWM–IAD | Portland to Washington | 2 | 50.0% | 12.0 min | 0.0% |
| PWM–DEN | Portland to Denver | 1 | 100.0% | -7.0 min | 0.0% |
By scheduled departure hour
Delay causes
Questions and answers
How many flights left PWM on time in December 2025?
74.7% of 546 scheduled domestic departures left less than 15 minutes late, and 71.1% reached their destination on time. The national figures that month were 72.0% and 71.9%.
How does that compare with a year earlier?
In December 2024, 82.5% of 785 departures left on time and 0.5% were cancelled, against 74.7% and 2.2% in December 2025.
Provenance
Source: Bureau of Transportation Statistics, Reporting Carrier On-Time Performance, file for December 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.