Best Time to Fly LGA to PWM: On-Time Stats by Hour & Airline
LaGuardia → Portland International Jetport
Data through July 2026 · Last updated October 18, 2026
Over the last 12 months, 78.2% of New York (LGA) to Portland (PWM) flights arrived on time (1,183 scheduled flights). That is 0.5 points above the national average of 77.6%.
Among 2 airlines, American Airlines led with 92.0% on time and Republic Airways was last with 77.8%.
Over 24 months, Saturday was the most reliable day (86% on time) and July the worst month (73%).
The cancellation rate was 5.2% (US average 1.8%).
LGA 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 |
|---|---|---|---|---|
| American Airlines | 92.0% | 46 min | 0.0% | 50 |
| Republic Airways | 77.8% | 60 min | 5.3% | 1,126 |
| Delta Air Lines | Limited data | 7 | ||
80%+ good 70–79.9% fair <70% poor
Best time of day to fly LGA to PWM
On-time arrival % by scheduled departure hour (local time), 2,410 flights over 24 months.
Show the numbers
| Departure hour | On time | Cancelled | Flights |
|---|---|---|---|
| 7am–8am | 91.7% | 0.0% | 36 |
| 8am–9am | 92.6% | 1.2% | 82 |
| 9am–10am | 87.8% | 5.0% | 416 |
| 10am–11am | 91.5% | 0.8% | 119 |
| 11am–12pm | 85.3% | 1.3% | 235 |
| 12pm–1pm | 78.0% | 3.9% | 52 |
| 1pm–2pm | 97.2% | 0.0% | 71 |
| 2pm–3pm | 82.2% | 1.8% | 391 |
| 3pm–4pm | 71.6% | 4.6% | 263 |
| 4pm–5pm | 76.9% | 9.3% | 43 |
| 5pm–6pm | Limited data | 30 | |
| 6pm–7pm | 64.7% | 12.4% | 113 |
| 7pm–8pm | 81.8% | 3.5% | 58 |
| 8pm–9pm | 82.6% | 2.1% | 48 |
| 9pm–10pm | 73.0% | 6.6% | 453 |
Best day of the week
24 months, by day of departure.
Best month to fly
24 months, by calendar month.
Holiday travel on LGA 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) | 87.9% | +5.5 pts | 0.0% | 33 |
| Christmas & New Year (Dec 20 - Jan 3) | 82.0% | -0.4 pts | 2.0% | 51 |
| Summer peak (Jun 15 - Aug 15) | 75.7% | -6.7 pts | 10.4% | 450 |
| All other days | 82.4% | — | 2.7% | 1,876 |
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).