Newark (EWR) to Portland (PWM): On-Time Performance
Data through May 2026
The calendar drives reliability on EWR–PWM. May 2026 flights landed on schedule 91% of the time, but December 2025 dropped to 57% — a gap of 34 points. Across the full period the route averages 80% on-time against a national 78%. Morning departures also hold up better than evening ones (90% vs 70%), which matters most in the rough months.
- On-time
- 80%
- arrived <15 min late
- Avg delay
- 15 min
- completed flights
- Cancelled
- 2.9%
- Flights/day
- 2.6
- last 12 months
- Duration
- 1h 27m
- scheduled
- Distance
- 284 mi
Best airline from EWR to PWM
2 airlines flew this route regularly between 2024-06 and 2026-05.
| Airline | On-time | Avg delay | Cancelled | Flights |
|---|---|---|---|---|
| Republic Airwaysmost reliable | 86% | 9 min | 2.7% | 1,543 |
| United Airlines | 59% | 36 min | 3.4% | 473 |
Monthly on-time trend
Best time to fly from EWR to PWM
Aim for departures around 7 a.m. (95% on-time); avoid 10 p.m. departures (53%).
By day of week
| Day | On-time | Avg delay |
|---|---|---|
| Monday | 77% | 20 min |
| Tuesdaybest | 86% | 9 min |
| Wednesdaybest | 86% | 10 min |
| Thursday | 77% | 18 min |
| Friday | 77% | 18 min |
| Saturday | 79% | 19 min |
| Sunday | 80% | 15 min |
What causes delays on this route
Share of total delay minutes by cause, as reported by carriers to the US DOT.
- Late-arriving aircraft52%
- Airline operations27%
- National airspace system17%
- Weather3%
Frequently asked questions
- How often are flights from EWR to PWM delayed?
- 20% of EWR–PWM flights arrived 15 or more minutes late (the US DOT definition of a delay) between 2024-06 and 2026-05. The average arrival delay across completed flights was 15 minutes.
- Which airline is most reliable from EWR to PWM?
- Republic Airways has the best on-time record on this route at 86%, based on 1,543 flights. 2 airlines flew EWR–PWM frequently enough to compare in this period.
- What is the best time of day to fly from EWR to PWM?
- Departures around 7 a.m. have the best record (95% on-time), while departures around 10 p.m. have the worst (53%). As on most US routes, delays accumulate through the day, so earlier flights are generally safer.
- How long is the flight from EWR to PWM?
- The scheduled EWR–PWM flight time averages 1h 27m over 284 miles. Actual arrival times vary — flights on this route land 15+ minutes late 20% of the time.
- How often are EWR to PWM flights cancelled?
- 2.9% of scheduled flights on this route were cancelled between 2024-06 and 2026-05, slightly above the national rate of 1.6%.
- What is the worst month to fly from EWR to PWM?
- December 2025 was the roughest month in this dataset, with only 57% of arrivals on time. The best was May 2026 at 91%. If your dates are flexible, that 34-point gap is worth planning around.
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Based on 2,016 flights, 2024-06–2026-05. Source: US DOT Bureau of Transportation Statistics. Updated 2026-07-01.