Airports › Portland (PWM) › May 2026
Airport month · May 2026
Portland International Jetport in May 2026
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 May 2026, reporting carriers scheduled 1,056 domestic departures from Portland International Jetport (PWM). 85.7% left less than 15 minutes late and 84.8% reached their destination on time; 0.9% were cancelled.
Nationally that month, 77.1% of flights departed on time and 77.6% arrived on time, so PWM departures were 8.6 points above the national departure figure.
A year earlier, in May 2025, the airport had 987 departures with 83.5% leaving on time: a change of +2.2 points, with flights up 7%.
Flights arriving at PWM that month were on time 80.4% of the time (1,057 scheduled arrivals).
Of the delay minutes that carriers assigned to a BTS cause category that month, late-arriving aircraft 35%, air carrier 33% and national aviation system 26%.
- On time 84.8%
- Arrived 15+ minutes late 14.1%
- Cancelled 0.9%
- Diverted 0.2%
May 2026 against a year earlier, the airport's year and the nation
| Measure | May 2026 | May 2025 | PWM, 12 months to Jul 2026 | All reported flights, May 2026 |
|---|---|---|---|---|
| Departed on time | 85.7% | 83.5% | 80.0% | 77.1% |
| Arrived on time | 84.8% | 78.2% | 78.2% | 77.6% |
| Cancelled | 0.9% | 1.8% | 2.6% | 0.9% |
| Average departure delay (late minutes only) | 10.2 min | 14.5 min | 17.2 min | 16.0 min |
| Scheduled departures a day | 35 | 33 | 30 | 20,391 |
| Scheduled departures | 1,056 | 987 | 10,925 | 611,735 |
Airlines that month
| Reporting carrier | Flights | Share | On time | Avg arrival delay | Cancelled |
|---|---|---|---|---|---|
| YX Republic Airline | 383 | 36% | 90.6% | -8.3 min | 0.8% |
| AA American Airlines | 167 | 16% | 79.0% | -0.7 min | 1.2% |
| WN Southwest Airlines | 111 | 11% | 82.0% | 4.7 min | 0.0% |
| UA United Airlines | 103 | 10% | 84.5% | 9.8 min | 0.0% |
| DL Delta Air Lines | 87 | 8% | 80.5% | -4.3 min | 1.1% |
| OH PSA Airlines | 67 | 6% | 71.6% | 12.7 min | 3.0% |
| OO SkyWest Airlines | 57 | 5% | 89.5% | -0.2 min | 0.0% |
| MQ Envoy Air | 41 | 4% | 82.9% | -9.2 min | 2.4% |
| B6 JetBlue Airways | 40 | 4% | 87.5% | -8.6 min | 2.5% |
Busiest routes that month
| Route | Cities | Flights | On time | Avg arrival delay | Cancelled |
|---|---|---|---|---|---|
| PWM–ORD | Portland to Chicago | 166 | 88.0% | -3.6 min | 0.6% |
| PWM–LGA | Portland to New York | 130 | 89.2% | -4.2 min | 0.8% |
| PWM–IAD | Portland to Washington | 119 | 92.4% | -9.7 min | 0.0% |
| PWM–EWR | Portland to Newark | 113 | 90.3% | -11.2 min | 1.8% |
| PWM–BWI | Portland to Baltimore | 106 | 82.1% | 5.2 min | 0.0% |
| PWM–DCA | Portland to Washington | 94 | 72.3% | 12.6 min | 2.1% |
| PWM–CLT | Portland to Charlotte | 75 | 80.0% | -6.3 min | 0.0% |
| PWM–DTW | Portland to Detroit | 61 | 86.9% | -5.2 min | 1.6% |
| PWM–ATL | Portland to Atlanta | 56 | 76.8% | -0.4 min | 0.0% |
| PWM–PHL | Portland to Philadelphia | 52 | 90.4% | -7.0 min | 1.9% |
| PWM–JFK | Portland to New York | 40 | 87.5% | -8.6 min | 2.5% |
| PWM–DEN | Portland to Denver | 28 | 64.3% | 45.0 min | 0.0% |
By scheduled departure hour
Delay causes
Questions and answers
How many flights left PWM on time in May 2026?
85.7% of 1,056 scheduled domestic departures left less than 15 minutes late, and 84.8% reached their destination on time. The national figures that month were 77.1% and 77.6%.
How does that compare with a year earlier?
In May 2025, 83.5% of 987 departures left on time and 1.8% were cancelled, against 85.7% and 0.9% in May 2026.
Provenance
Source: Bureau of Transportation Statistics, Reporting Carrier On-Time Performance, file for May 2026; 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.