Which departure time was most reliable for BOS to PHX?
Among qualifying BOS-to-PHX departure window results, Late morning had the highest on-time rate: 82.3% of 327 flights. Evening was lowest at 63.6% across 519 flights.
| Departure window | Flights | On time | 30+ min | Cancelled |
|---|---|---|---|---|
| Early morning | 631 | 80.0% | 9.8% | 2.7% |
| Late morning | 327 | 82.3% | 11.3% | 0.6% |
| Afternoon | 547 | 76.2% | 13.3% | 1.6% |
| Evening | 519 | 63.6% | 22.5% | 1.3% |
Which weekday was most reliable for BOS to PHX?
Among qualifying BOS-to-PHX weekday results, Sunday had the highest on-time rate: 77.6% of 313 flights. Friday was lowest at 72.0% across 293 flights.
| Day | Flights | On time | 30+ min | Cancelled |
|---|---|---|---|---|
| Monday | 304 | 76.0% | 11.5% | 4.6% |
| Tuesday | 267 | 72.7% | 16.1% | 3.0% |
| Wednesday | 271 | 75.3% | 12.2% | 1.1% |
| Thursday | 305 | 75.7% | 14.8% | 0.0% |
| Friday | 293 | 72.0% | 16.0% | 0.3% |
| Saturday | 271 | 76.4% | 14.8% | 1.1% |
| Sunday | 313 | 77.6% | 14.7% | 1.9% |
Which airline was most reliable for BOS to PHX?
Among qualifying BOS-to-PHX airline results, American Airlines had the highest on-time rate: 78.5% of 1,316 flights. Delta Air Lines was lowest at 67.3% across 428 flights.
| Airline | Flights | On time | 30+ min | Cancelled |
|---|---|---|---|---|
| American Airlines | 1,316 | 78.5% | 12.2% | 1.6% |
| Delta Air Lines | 428 | 67.3% | 17.5% | 1.9% |
| JetBlue Airways | 280 | 71.4% | 18.9% | 2.1% |
Which month was most reliable for BOS to PHX?
Among qualifying BOS-to-PHX month results, March 2026 had the highest on-time rate: 85.9% of 198 flights. July 2025 was lowest at 66.2% across 160 flights.
| Month | Flights | On time | 30+ min | Cancelled |
|---|---|---|---|---|
| July 2025 | 160 | 66.2% | 20.0% | 3.1% |
| August 2025 | 137 | 81.0% | 10.2% | 0.0% |
| September 2025 | 132 | 74.2% | 15.9% | 0.8% |
| October 2025 | 166 | 72.9% | 18.7% | 0.0% |
| November 2025 | 158 | 78.5% | 13.3% | 1.3% |
| December 2025 | 179 | 69.3% | 18.4% | 0.6% |
| January 2026 | 169 | 69.2% | 15.4% | 7.7% |
| February 2026 | 165 | 67.3% | 17.0% | 7.3% |
| March 2026 | 198 | 85.9% | 8.6% | 0.5% |
| April 2026 | 211 | 80.6% | 10.4% | 0.0% |
| May 2026 | 201 | 73.1% | 14.9% | 0.0% |
| June 2026 | 148 | 82.4% | 9.5% | 0.0% |
What drove BOS to PHX delay minutes?
Airline was the largest recorded BOS-to-PHX delay category, accounting for 38.3% of 32,460 BTS-attributed delay minutes during July 2025–June 2026.
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