Best Time to Fly BOS to PHX: On-Time Stats by Hour & Airline
Logan International → Phoenix Sky Harbor International
Data through July 2026 · Last updated October 18, 2026
2,017 flights were scheduled from Boston (BOS) to Phoenix (PHX) in the last 12 months, and 77.4% of those that flew arrived on time, in line with the US average of 77.6%.
Among 3 airlines, American Airlines led with 80.4% on time and Delta Air Lines was last with 70.5%.
Over 24 months, Tuesday was the most reliable day (81% on time) and February the worst month (68%).
The cancellation rate was 1.6% (US average 1.8%).
BOS to PHX 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 | 80.4% | 79 min | 1.6% | 1,315 |
| JetBlue | 73.5% | 69 min | 1.8% | 273 |
| Delta Air Lines | 70.5% | 56 min | 1.6% | 429 |
80%+ good 70–79.9% fair <70% poor
Best time of day to fly BOS to PHX
On-time arrival % by scheduled departure hour (local time), 4,243 flights over 24 months.
Show the numbers
| Departure hour | On time | Cancelled | Flights |
|---|---|---|---|
| 6am–7am | 89.4% | 1.4% | 736 |
| 7am–8am | 75.6% | 0.0% | 176 |
| 8am–9am | 77.8% | 1.9% | 469 |
| 9am–10am | 86.0% | 0.3% | 589 |
| 10am–11am | Limited data | 26 | |
| 12pm–1pm | 80.6% | 1.1% | 475 |
| 1pm–2pm | 81.9% | 0.0% | 249 |
| 4pm–5pm | 74.4% | 1.3% | 306 |
| 5pm–6pm | 66.3% | 1.3% | 675 |
| 6pm–7pm | 69.0% | 0.7% | 407 |
| 7pm–8pm | 71.3% | 1.1% | 95 |
| 8pm–9pm | 64.1% | 2.5% | 40 |
Best day of the week
24 months, by day of departure.
Best month to fly
24 months, by calendar month.
Holiday travel on BOS to PHX
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) | 84.4% | +5.0 pts | 1.3% | 79 |
| Christmas & New Year (Dec 20 - Jan 3) | 70.3% | -9.1 pts | 1.5% | 203 |
| Summer peak (Jun 15 - Aug 15) | 74.1% | -5.4 pts | 1.6% | 640 |
| All other days | 79.4% | — | 0.9% | 3,321 |
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).