Best Time to Fly PDX to BOS: On-Time Stats by Hour & Airline
Portland International → Logan International
Data through July 2026 · Last updated October 18, 2026
671 flights were scheduled from Portland (PDX) to Boston (BOS) in the last 12 months, and 78.8% of those that flew arrived on time, 1.2 points above the US average of 77.6%.
Alaska Airlines was the most punctual of the 2 airlines on the route at 81.0%, while JetBlue trailed at 69.9%.
March has been the best month (93% on time) and Tuesday the weakest day of the week (72%).
1.3% of flights were cancelled, versus 1.8% nationally.
PDX to BOS 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 |
|---|---|---|---|---|
| Alaska Airlines | 81.0% | 37 min | 0.8% | 533 |
| JetBlue | 69.9% | 101 min | 3.6% | 138 |
80%+ good 70–79.9% fair <70% poor
Best time of day to fly PDX to BOS
On-time arrival % by scheduled departure hour (local time), 1,348 flights over 24 months.
Show the numbers
| Departure hour | On time | Cancelled | Flights |
|---|---|---|---|
| 7am–8am | 84.4% | 0.8% | 501 |
| 8am–9am | 67.4% | 0.0% | 47 |
| 9am–10am | Limited data | 27 | |
| 10am–11am | 82.1% | 0.0% | 112 |
| 12pm–1pm | Limited data | 19 | |
| 2pm–3pm | 68.4% | 0.9% | 115 |
| 9pm–10pm | 79.9% | 0.3% | 300 |
| 10pm–11pm | 57.7% | 1.9% | 53 |
| 11pm–12am | 65.1% | 2.9% | 174 |
Best day of the week
24 months, by day of departure.
Best month to fly
24 months, by calendar month.
Holiday travel on PDX to BOS
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 | 23 | ||
| Christmas & New Year (Dec 20 - Jan 3) | 80.4% | +0.4 pts | 0.0% | 51 |
| Summer peak (Jun 15 - Aug 15) | 72.0% | -8.0 pts | 1.5% | 403 |
| All other days | 80.0% | — | 0.7% | 871 |
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).