Best Time to Fly EWR to PWM: On-Time Stats by Hour & Airline
Newark Liberty International → Portland International Jetport
Data through July 2026 · Last updated October 18, 2026
Over the last 12 months, 83.3% of Newark (EWR) to Portland (PWM) flights arrived on time (980 scheduled flights). That is 5.7 points above the national average of 77.6%.
Among 2 airlines, Republic Airways led with 86.6% on time and United Airlines was last with 61.2%.
Over 24 months, Tuesday was the most reliable day (86% on time) and December the worst month (65%).
The cancellation rate was 3.9% (US average 1.8%).
EWR to PWM 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 |
|---|---|---|---|---|
| Republic Airways | 86.6% | 65 min | 4.0% | 855 |
| United Airlines | 61.2% | 78 min | 3.2% | 125 |
80%+ good 70–79.9% fair <70% poor
Best time of day to fly EWR to PWM
On-time arrival % by scheduled departure hour (local time), 2,028 flights over 24 months.
Show the numbers
| Departure hour | On time | Cancelled | Flights |
|---|---|---|---|
| 6am–7am | 94.4% | 2.6% | 38 |
| 7am–8am | 96.6% | 3.9% | 153 |
| 8am–9am | 91.9% | 0.8% | 124 |
| 9am–10am | 91.0% | 1.4% | 146 |
| 10am–11am | Limited data | 5 | |
| 11am–12pm | 90.0% | 0.7% | 141 |
| 12pm–1pm | 87.3% | 3.5% | 171 |
| 1pm–2pm | Limited data | 23 | |
| 3pm–4pm | Limited data | 27 | |
| 4pm–5pm | 81.0% | 6.0% | 269 |
| 5pm–6pm | 77.9% | 2.9% | 242 |
| 7pm–8pm | 74.7% | 7.1% | 85 |
| 8pm–9pm | Limited data | 4 | |
| 9pm–10pm | 70.2% | 4.6% | 569 |
| 10pm–11pm | Limited data | 31 | |
Best day of the week
24 months, by day of departure.
Best month to fly
24 months, by calendar month.
Holiday travel on EWR to PWM
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) | 67.7% | -15.1 pts | 0.0% | 31 |
| Christmas & New Year (Dec 20 - Jan 3) | 70.7% | -12.2 pts | 3.3% | 60 |
| Summer peak (Jun 15 - Aug 15) | 77.7% | -5.1 pts | 9.7% | 464 |
| All other days | 82.8% | — | 1.8% | 1,473 |
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).