Best Time to Fly PWM to JFK: On-Time Stats by Hour & Airline
Portland International Jetport → John F. Kennedy International
Data through July 2026 · Last updated October 18, 2026
398 flights were scheduled from Portland (PWM) to New York (JFK) in the last 12 months, and 80.5% of those that flew arrived on time, 2.8 points above the US average of 77.6%.
JetBlue was the most punctual of the 2 airlines on the route at 80.5%, while Republic Airways trailed at 80.4%.
November has been the best month (97% on time) and Thursday the weakest day of the week (76%).
4.8% of flights were cancelled, versus 1.8% nationally.
PWM to JFK 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 |
|---|---|---|---|---|
| JetBlue | 80.5% | 95 min | 3.9% | 336 |
| Republic Airways | 80.4% | 86 min | 9.7% | 62 |
80%+ good 70–79.9% fair <70% poor
Best time of day to fly PWM to JFK
On-time arrival % by scheduled departure hour (local time), 1,128 flights over 24 months.
Show the numbers
| Departure hour | On time | Cancelled | Flights |
|---|---|---|---|
| 5am–6am | 87.4% | 0.0% | 143 |
| 6am–7am | 88.7% | 5.3% | 206 |
| 7am–8am | 94.0% | 0.8% | 117 |
| 8am–9am | 86.5% | 0.0% | 52 |
| 9am–10am | Limited data | 5 | |
| 10am–11am | Limited data | 29 | |
| 12pm–1pm | Limited data | 14 | |
| 1pm–2pm | 65.6% | 5.9% | 68 |
| 2pm–3pm | 72.4% | 4.6% | 392 |
| 3pm–4pm | 61.1% | 2.7% | 37 |
| 5pm–6pm | 60.0% | 3.2% | 31 |
| 8pm–9pm | Limited data | 34 | |
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 JFK
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) | Limited data | 12 | ||
| Christmas & New Year (Dec 20 - Jan 3) | Limited data | 15 | ||
| Summer peak (Jun 15 - Aug 15) | 68.0% | -13.6 pts | 11.3% | 265 |
| All other days | 81.5% | — | 1.6% | 836 |
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).