PHX→MIA

PHX to MIA is at its best against routes of similar length for flights scheduled at 12 AM: 93.3% arrive on time, 13.2 points ahead of the 80.1% those routes manage at that hour. Against all other routes the gap is 11.8 points.

PHX to MIA struggles most at 8 AM: 77.7% of its flights scheduled then arrive on time, 6.2 points behind the 83.9% on routes of similar length at the same hour. Against all other routes the gap is 8.2 points.

PHX to MIA holds up on Saturdays better than routes of similar length do: 84.3% on time to their 79.3%, a 5 points lead. Against all other routes the gap is 5.2 points.

May is kinder to PHX to MIA than to routes of similar length: 84.2% on time against 76.5%, 7.7 points better. Against all other routes the gap is 9 points.

American Airlines does better on PHX to MIA than on its routes of similar length: 81.7% on time here, 77.9% there, 3.8 points apart. Against all other routes the gap is 6.6 points.

Each comparison pools the flights of other routes, with this route’s own left out. Similar length means within 15% of this route’s 1,972 miles, with at least 5 such routes. A bucket is set against the most comparable group that has enough flights: similar length, then the same origin (at least 3 routes), then all other routes. Hours, weekdays and months appear only where both sides have 120 completed flights, and airlines where both have 600. The gap must be at least 2 points and 2 standard errors, and only the largest gap each way is kept per measure. These are differences in the flights counted, not causes.

Arriving at MIA, PHX to MIA is on time 81.7% of the time, 4.9 points better than the airport’s other arrivals at MIA (76.8%, from 328,776 flights).

PHX to MIA arrived on time 78.4% of the time in its latest twelve months (August 2025 to July 2026), 4 points below the 82.4% of its first twelve (July 2023 to June 2024).

Of the 5,315 flights scheduled in hours with at least 120 flights, 11 PM is the busiest hour with 998 (18.8%), 85.4% of them on time, and 9 PM the quietest with 131 (2.5%), 86.0% of them on time.

Airport comparisons take this route’s flights out of the airport total. Length means within 15% of this route’s distance, with at least 3 other routes from the same origin. On-time gaps are stated at 2 points and 2 standard errors, cancellation gaps at 0.5 points and 2 standard errors, and every group needs 750 flights. These are differences in the flights counted, not causes.