MIA → PHX Flight Reliability

Right now

Origin · MIAMinor disruption

The National Weather Service has issued a wind advisory covering the airport.

Updated 08:53 UTC

Miami airport profile →

Destination · PHXNo disruption reported

Aviation weather is not currently a factor.

Updated 08:51 UTC

Phoenix airport profile →

Route reliability

July 2023 – August 2026

Route Reliability Score

62/ 100Good

Better than 40% of comparable major US routes (4,629 compared)

Calculated from 5,671 flights. How this is calculated · What counts as on time

On-time arrivals

76.1%

4,273 of 5,613

Cancellation rate

0.74%

42 cancelled

Median arrival delay

-4 min

Average 9.8 min

Severe delays

8.4%

60+ minutes late

Delay when late

75 min

Average, when 15+ min late

Flights analyzed

5,671

1 carrier

MIA → PHX arrives on time 76.1% of the time; the return trip, PHX → MIA, arrives on time 81.6% of the time, a 5.4-point gap between the two directions of the same city pair.

MIA → PHX spends 30.1 minutes on the ground on a 1,972-mile trip: 20.9 minutes from pushback to wheels-up at MIA and 9.2 minutes from touchdown to gate at PHX.

Source: US DOT Bureau of Transportation Statistics · Data covering July 2023 – August 2026

What stands out

This route has stayed remarkably steady year over year, a smaller swing than 97% of 5,406 comparable routes.

79.8% on time over the most recent 12 months (2025-09 to 2026-08), against 80.0% in the 12 months before (2024-09 to 2025-08), virtually unchanged.

Source: FlyerIntel analysis of US DOT BTS data · July 2023 – August 2026 · Ranked against every other route with the same kind of figure and at least 5,406 in the comparison.

What sets this route apart

Where MIA to PHX differs most from similar routes by hour, weekday, month and airline, July 2023 – August 2026.

MIA to PHX is at its best against routes of similar length for flights scheduled at 2 PM: 85.0% arrive on time, 10.6 points ahead of the 74.4% those routes manage at that hour. Against all other routes the gap is 10.7 points.

MIA to PHX struggles most at 4 PM: 66.2% of its flights scheduled then arrive on time, 6.6 points behind the 72.8% on routes of similar length at the same hour.

Tuesday is the day MIA to PHX slips furthest against routes of similar length, 77.2% on time where they average 81.7%, 4.5 points lower. Against all other routes the gap is 4.3 points.

In January, MIA to PHX runs 6.8 points below routes of similar length, 72.9% on time to 79.7%. Against all other routes the gap is 6.2 points.

MIA to PHX against comparable routes

July 2023 – August 2026

Where MIA to PHX differs most from comparable routes, with the group each figure is compared with and the flights behind it
Measure	This route	Compared with	Them	Gap	Flights behind it
Hour: 2 PM departures	85.0%	routes of similar length	74.4%	+10.6 pts	160 here, 46,297 there
Hour: 4 PM departures	66.2%	routes of similar length	72.8%	−6.6 pts	260 here, 58,572 there
Weekday: Tuesday	77.2%	routes of similar length	81.7%	−4.5 pts	793 here, 149,605 there
Month: January	72.9%	routes of similar length	79.7%	−6.8 pts	468 here, 74,175 there

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.

When it goes wrong

July 2023 – August 2026

One arrival in ten is worse than

51 min late

against a median of 4 min early

Arrived an hour or more late8.4%

Typical delay when late75 min

Cancelled0.74%

Landed somewhere else0.28%

Percentiles over 5,671 operations; cancelled and diverted flights are counted separately.

Will your connection be tight enough?

Layovers at PHX after arriving from MIA.

Connection buffer and chance of missing by layover length, MIA → PHX arrivals
Connection time	Chance of missing	Reads as
30 min	41%	Likely to miss
45 min	23%	High risk
60 min	16%	High risk
90 min	8.4%	Some risk
120 min	5.1%	Some risk

This is one leg of a connection. Gate changes and the next flight's own schedule matter too. And a connection can fail before delay is even the question — this route cancels 0.74% of the time and diverts 0.28% of the time, which a late arrival never shows up in.

Chance of missing is the share of 5,613 arrivals on this route that landed later than the connection time less 30 minutes to reach the next gate.

The worst tenth of arrivals on this route land at least 51 minutes late (90th-percentile gate arrival delay), over 5,671 operations.

Any other layover length: connection checker.

Best time to fly

MIA → PHX flights departing 5–9 AM arrived on time 86.8% of the time, against 69.1% for 3–6 PM departures, a gap of 17.7 percentage points.

By departure window

5–9 AM86.8%

9 AM–12 PM79.6%

12–3 PM74.0%

3–6 PM69.1%

6–9 PM73.6%

9 PM–5 AM73.4%

By departure hour

12 AM

3 AM

6 AM

9 AM

12 PM

3 PM

6 PM

9 PM

Why MIA → PHX runs late

July 2023 – August 2026

Late-arriving aircraft42.4%

the inbound aircraft was late, so this flight started late

The airline35.5%

crew, maintenance, boarding and fueling, all within the carrier’s control

Air traffic control15.0%

airspace and airport capacity, including weather-driven flow control

Weather6.7%

weather severe enough to stop this flight specifically

Security0.4%

screening or terminal security incidents

Share of the delay minutes US DOT attributed to each cause for MIA → PHX. Only delays of 15 minutes or more are attributed. What the five causes mean

Late-arriving aircraft is the largest cause on MIA → PHX, at 42.4%: flights here mostly leave late because the plane came in late, and the day shows it: 5–9 AM departures arrived on time 86.8% of the time and 3–6 PM departures 69.1%.

Airlines on this route

Carriers with at least 200 flights, by the airline that operated each one.

Airlines on this route
Carrier	Flights	On time	Cancelled	Median delay	Severe
American Airlines	5,671	76.1%	0.74%	-4 min	8.4%

Flights on this route

Flight numbers with at least 600 operations here and still on the schedule.

Flights on this route
Flight	Scheduled	Operations	On time
AA1983 American Airlines	7:28 AM	925	86.0%

Weekly and seasonal patterns

By day of week

Mon75.8%

Tue77.2%

Wed78.4%

Thu76.2%

Fri77.0%

Sat75.2%

Sun73.3%

Wednesday is historically the most reliable day and Sunday the least, a gap of 5.1 percentage points.

By month

Jan

Feb

Mar

Apr

May

Jun

Jul

Aug

Sep

Oct

Nov

Dec

July is historically the weakest month and October the strongest, a spread of 20.4 percentage points.

Reliability over time

July 2023 – August 2026

24

25

26

Over the most recent 12 months (2025-09 to 2026-08), on-time arrivals averaged 79.8% against 80.0% in the 12 months before — broadly unchanged.

Data and methodology

Calculated by FlyerIntel from 5,671 MIA → PHX flight records from the US DOT Bureau of Transportation Statistics, covering July 2023 – August 2026. Late means 15 or more minutes past scheduled arrival; cancelled and diverted flights are left out of on-time rates.

Full methodology · Data sources · Report a problem

Analysis last recomputed October 26, 2026

MIA airport PHX airport Return direction PHX → MIA

MIA→PHX

Right now

Route reliability

What stands out

What sets this route apart

MIA to PHX against comparable routes

When it goes wrong

Will your connection be tight enough?

Best time to fly

By departure window

By departure hour

Why MIA → PHX runs late

Airlines on this route

Flights on this route

Weekly and seasonal patterns

By day of week

By month

Reliability over time

Data and methodology