Best Time to Fly PWM to EWR: On-Time Stats by Hour & Airline
Portland International Jetport → Newark Liberty International
Data through July 2026 · Last updated October 18, 2026
Over the last 12 months, 83.4% of Portland (PWM) to Newark (EWR) flights arrived on time (1,082 scheduled flights). That is 5.8 points above the national average of 77.6%.
Among 2 airlines, United Airlines led with 86.3% on time and Republic Airways was last with 83.0%.
Over 24 months, Tuesday was the most reliable day (88% on time) and July the worst month (78%).
The cancellation rate was 3.7% (US average 1.8%).
PWM to EWR on-time performance by airline
Last 12 months. Airlines with fewer than 30 completed flights are marked “limited data”.
| Airline | On time | Avg delay when late | Cancelled | Flights |
|---|---|---|---|---|
| United Airlines | 86.3% | 100 min | 3.3% | 121 |
| Republic Airways | 83.0% | 90 min | 3.8% | 961 |
80%+ good 70–79.9% fair <70% poor
Best time of day to fly PWM to EWR
On-time arrival % by scheduled departure hour (local time), 2,125 flights over 24 months.
Show the numbers
| Departure hour | On time | Cancelled | Flights |
|---|---|---|---|
| 5am–6am | Limited data | 13 | |
| 6am–7am | 87.5% | 2.4% | 674 |
| 7am–8am | 78.0% | 4.8% | 62 |
| 8am–9am | 95.7% | 2.5% | 119 |
| 9am–10am | Limited data | 3 | |
| 10am–11am | 80.2% | 2.2% | 222 |
| 11am–12pm | 87.7% | 0.0% | 252 |
| 12pm–1pm | 66.7% | 0.0% | 51 |
| 2pm–3pm | Limited data | 25 | |
| 3pm–4pm | 77.5% | 9.0% | 401 |
| 4pm–5pm | 75.8% | 3.9% | 129 |
| 5pm–6pm | 63.4% | 2.4% | 42 |
| 6pm–7pm | Limited data | 13 | |
| 7pm–8pm | 83.0% | 2.1% | 48 |
| 8pm–9pm | 73.4% | 9.9% | 71 |
Best day of the week
24 months, by day of departure.
Best month to fly
24 months, by calendar month.
Holiday travel on PWM to EWR
On-time arrivals during holiday periods compared with all other days, last 24 months.
| Period | On time | vs other days | Cancelled | Flights |
|---|---|---|---|---|
| Thanksgiving week (Tue before to Mon after) | 76.3% | -7.4 pts | 0.0% | 38 |
| Christmas & New Year (Dec 20 - Jan 3) | 87.5% | +3.8 pts | 4.0% | 75 |
| Summer peak (Jun 15 - Aug 15) | 78.1% | -5.5 pts | 9.3% | 449 |
| All other days | 83.7% | — | 2.3% | 1,563 |
Monthly on-time trend
On-time arrival % each month, with the 12-month US average for reference.
What causes delays on this route
Share of reported delay minutes, last 12 months (BTS cause categories).