Airport month record

PHXJUL

Phoenix Sky Harbor International in July 2025

Departures: 15,729
Month: July 2025
National, same month: 71.1%
Carriers: 12

Historical statistics for July 2025, not live status or a forecast for this year’s July. For today’s conditions at PHX, see live FAA status.

PHX in July sits in the middle of the pack with a B+. Close to three flights in four arrive on time by the DOT's definition, 4 points better than the national rate of 71.1%. The late ones land a little over an hour behind schedule. That rests on 15,729 flights, of which Delta Air Lines flew 886 at 87.1% on time.

Delta Air Lines is the most reliable of the eight carriers covered here at 87.1% on time across 886 flights.

On time

75.5%

Arrivals under 15 minutes late, of 15,501 completed departures

Avg delay

70 min

Across delayed arrivals only, not all flights

Cancelled

0.97%

Nationally in July: 2.45%

Whole year

78.8%

PHX across all twelve months

These figures cover 15,729 departures from Phoenix Sky Harbor International in July 2025. On time means an arrival less than 15 minutes after the scheduled gate time, the DOT's threshold, and the national comparison uses every US departure in the same month rather than the whole year.

Against the year

July next to PHX's other months

Against PHX's own year, July ran 3 points worse than the twelve-month rate of 78.8%, which makes it number eleven of twelve months, best first.

PHX month by month
Month	Flights	On time	Avg delay	Cancelled	Grade
July 2025 (this page)	15,729	75.5%	70 min	0.97%	B+
August 2025	14,380	81.0%	66 min	0.39%	B+
September 2025	13,772	83.0%	74 min	1.09%	B
October 2025	16,620	78.8%	59 min	0.21%	B+
November 2025	16,887	78.0%	63 min	2.21%	B
December 2025	17,689	78.4%	59 min	0.50%	B+
January 2026	16,564	81.6%	64 min	2.34%	B
February 2026	15,656	83.4%	58 min	0.71%	B+
March 2026	19,277	76.8%	65 min	0.92%	B+
April 2026	17,679	80.8%	57 min	0.29%	B+
May 2026	17,337	77.0%	58 min	0.30%	B+
June 2026	15,685	72.4%	65 min	0.43%	C+

Departure window

The best time of day to leave PHX in July

Departure time matters more here than the choice of carrier. The gap between the best and worst window is 28 points, against 15 points between the best and worst carrier. Each bar is the on-time rate for flights scheduled inside that window.

5am–8am2,226 flights91.7%
8am–11am3,576 flights83.2%
11am–2pm2,196 flights76.5%
2pm–5pm2,866 flights68.1%
5pm–8pm2,292 flights63.5%
8pm–5am2,573 flights68.6%

Scale runs 55% to 95%. Rows with fewer than 30 flights show a dash.

The 5pm–8pm window is where this operation falls apart: 63.5% on time, against 91.7% for the 5am–8am slot. By evening the aircraft flying these rotations have absorbed a full day of small delays and there is no slack left to recover in. The 8am–11am window is the busiest, with 3,576 flights scheduled in it.

Across the week, Friday is the strongest day at 79.2% on time and Thursday the weakest at 73.2%. 6 points is a smaller lever than departure hour, but it is free.

Carrier by carrier

Which airlines ran best at PHX in July

The choice of carrier is not cosmetic here. Delta Air Lines arrives on time 87.1% of the time; American Airlines manages 72.1%. Sample sizes sit next to every figure, because a two-point gap across 4,783 flights means less than a ten-point one.

Carriers at PHX in July 2025
Airline	Flights	On time	Avg delay	Cancelled	Grade
Southwest Airlines	5,634	73.4%	53 min	0.80%	C+
American Airlines	4,783	72.1%	81 min	1.19%	C
SkyWest Airlines	1,945	80.5%	82 min	0.67%	B+
Delta Air Lines	886	87.1%	73 min	1.02%	A
United Airlines	779	75.7%	95 min	1.67%	B
Envoy Air	641	82.7%	52 min	0.16%	B+
Frontier Airlines	519	75.4%	88 min	1.73%	B
Alaska Airlines	399	80.7%	59 min	1.00%	B
Spirit Airlinesthin sample	43	86.0%	39 min	0.00%	A+
JetBlue Airwaysthin sample	38	61.1%	82 min	5.26%	D−
Hawaiian Airlinesthin sample	31	93.5%	483 min	0.00%	A+
Allegiant Airthin sample	31	77.4%	69 min	0.00%	B+

The spread between Delta and American is 15 points, wide enough that it should decide the booking. On a hundred trips that is 15 more arrivals inside the on-time window.

Route by route

Busiest routes out of PHX in July

Routes from PHX in July 2025
Route	Flights	On time	Avg delay	Cancelled	Grade
PHX to DEN · Denver	658	64.1%	71 min	1.67%	D
PHX to SEA · Seattle	621	82.2%	48 min	0.48%	B+
PHX to LAX · Los Angeles	608	84.8%	78 min	0.49%	B+
PHX to LAS · Las Vegas	495	77.0%	63 min	0.40%	B+
PHX to SAN · San Diego	473	74.1%	60 min	1.06%	C
PHX to ORD · Chicago	439	72.6%	71 min	2.51%	C
PHX to SLC · Salt Lake City	431	80.7%	70 min	1.39%	B
PHX to DFW · Dallas-Fort Worth	421	71.1%	80 min	2.61%	C
PHX to SNA · Santa Ana	382	78.7%	75 min	0.26%	B+
PHX to SFO · San Franciscothin sample	356	64.5%	56 min	0.28%	D+
PHX to ATL · Atlantathin sample	317	83.8%	70 min	0.32%	B+
PHX to SMF · Sacramentothin sample	316	76.2%	55 min	0.32%	B+
PHX to PDX · Portlandthin sample	312	77.9%	55 min	0.00%	B+
PHX to MSP · Minneapolisthin sample	272	81.0%	78 min	0.37%	B+
PHX to ONT · Ontariothin sample	263	77.9%	66 min	0.38%	B+
PHX to ABQ · Albuquerquethin sample	262	75.6%	77 min	0.00%	B+
PHX to TUS · Tucsonthin sample	262	83.8%	65 min	0.38%	B+
PHX to AUS · Austinthin sample	259	71.6%	62 min	0.77%	C+
PHX to BUR · Burbankthin sample	255	80.9%	73 min	1.57%	B
PHX to MDW · Chicagothin sample	252	74.6%	48 min	0.40%	C+
PHX to SJC · San Josethin sample	248	79.4%	80 min	0.40%	B+
PHX to CLT · Charlottethin sample	247	79.0%	77 min	1.62%	B
PHX to DTW · Detroitthin sample	238	78.0%	83 min	1.26%	B
PHX to DAL · Dallasthin sample	228	79.2%	47 min	2.19%	B
PHX to EWR · Newarkthin sample	216	69.8%	89 min	3.70%	C−

Delay causes

What held PHX up in July

One category carries most of the weight here. Late-arriving aircraft accounts for 45% of the 265,000 delay minutes carriers reported, and the remaining four split what is left. The split is by minutes rather than by flights, so a few very long delays count for as much as many short ones.

Late-arriving aircraft
45%
Carrier
40%
National Airspace System
14%
Extreme weather
1%
Security
0%

45% of delay minutes trace back to a late-arriving aircraft, meaning the plane was already behind before it got here. That is a cascade, and cascades start small and grow through the day. Across 265,000 reported delay minutes here, that single category outweighs weather by 33 to one. It is the strongest argument for booking the first departure of the morning, when the aircraft has been sitting at the gate overnight with nothing to inherit. The split is drawn from 265,224 reported delay minutes.

Cancellations sit at 0.97% against a national 2.45%, which is ordinary. Diversions add another 0.48%.

8.7% of arrivals land an hour or more late, close to the national 12.1%. That is the figure that decides a connection, and it says a 60 to 75 minute layover is reasonable here while anything under 45 minutes is a bet. Most delays on this route last a little over an hour, which a normal layover absorbs.

What to do with this

Flying from PHX in July

For a July trip through PHX: plan on this being one of the airport's harder months. The 5am–8am departures held up best at 91.7% on time, and with 8.7% of arrivals an hour or more late, a connection here deserves more slack than the same trip in February would.

Phoenix Sky Harbor International (PHX), the whole year
PHX in August81.0%
PHX in September83.0%
PHX in October78.8%
PHX in November78.0%
PHX in December78.4%
PHX in January81.6%
PHX in February83.4%
PHX in March76.8%
PHX in April80.8%
PHX in May77.0%
PHX in June72.4%

Source: US DOT Bureau of Transportation Statistics, on-time performance data, July 2025 to June 2026. Last updated 15 September 2026; recomputed monthly. How this data is collected.

Key figures