Phoenix Sky Harbor International in September 2025

80.4%departed on time

BTS: A flight is counted as on time if it arrived less than 15 minutes after its scheduled time. Only carriers with at least 0.5 percent of domestic scheduled passenger revenue report.

In September 2025, reporting carriers scheduled 13,772 domestic departures from Phoenix Sky Harbor International (PHX). 80.4% left less than 15 minutes late and 82.0% reached their destination on time; 1.1% were cancelled.

Nationally that month, 83.1% of flights departed on time and 82.8% arrived on time, so PHX departures were 2.7 points below the national departure figure.

A year earlier, in September 2024, the airport had 15,081 departures with 84.9% leaving on time: a change of −4.5 points, with flights down 9%.

Flights arriving at PHX that month were on time 81.2% of the time (13,785 scheduled arrivals).

Of the delay minutes that carriers assigned to a BTS cause category that month, late-arriving aircraft 43%, air carrier 33% and national aviation system 14%.

On time 82.0%
Arrived 15+ minutes late 16.8%
Cancelled 1.1%
Diverted 0.2%

Every scheduled departure from PHX in September 2025, judged by arrival at the destination.

September 2025 against a year earlier, the airport's year and the nation

Measure	Sep 2025	Sep 2024	PHX, 12 months to Jul 2026	All reported flights, Sep 2025
Departed on time	80.4%	84.9%	76.1%	83.1%
Arrived on time	82.0%	86.1%	77.4%	82.8%
Cancelled	1.1%	0.2%	0.9%	0.5%
Average departure delay (late minutes only)	14.5 min	9.6 min	15.8 min	12.2 min
Scheduled departures a day	459	503	542	18,748
Scheduled departures	13,772	15,081	197,642	562,439

Airlines that month

Reporting carrier	Flights	Share	On time	Avg arrival delay	Cancelled
WN Southwest Airlines	4,986	36%	80.2%	6.3 min	1.0%
AA American Airlines	3,777	27%	81.3%	3.2 min	1.7%
OO SkyWest Airlines	1,738	13%	83.0%	4.2 min	1.2%
DL Delta Air Lines	826	6%	89.1%	3.5 min	0.0%
UA United Airlines	731	5%	82.1%	12.0 min	0.5%
MQ Envoy Air	670	5%	87.5%	-1.3 min	0.9%
F9 Frontier Airlines	536	4%	80.0%	7.9 min	0.9%
AS Alaska Airlines	398	3%	85.9%	0.8 min	0.3%
NK Spirit Airlines	33	0%	78.8%	44.0 min	0.0%
B6 JetBlue Airways	30	0%	76.7%	4.7 min	0.0%
HA Hawaiian Airlines	30	0%	86.7%	3.5 min	0.0%
G4 Allegiant Air	17	0%	47.1%	89.4 min	0.0%

Busiest routes that month

Route	Cities	Flights	On time	Avg arrival delay	Cancelled
PHX–DEN	Phoenix to Denver	662	77.3%	12.0 min	0.6%
PHX–LAX	Phoenix to Los Angeles	583	84.7%	1.7 min	0.9%
PHX–SEA	Phoenix to Seattle	544	83.8%	2.5 min	0.6%
PHX–SAN	Phoenix to San Diego	499	77.0%	12.3 min	1.8%
PHX–ORD	Phoenix to Chicago	436	78.2%	7.7 min	1.1%
PHX–LAS	Phoenix to Las Vegas	430	81.2%	4.0 min	1.9%
PHX–SLC	Phoenix to Salt Lake City	413	86.2%	4.4 min	0.5%
PHX–DFW	Phoenix to Dallas/Fort Worth	398	80.2%	0.3 min	3.8%
PHX–SNA	Phoenix to Santa Ana	351	78.1%	3.8 min	0.9%
PHX–SFO	Phoenix to San Francisco	342	76.0%	10.0 min	1.2%
PHX–ATL	Phoenix to Atlanta	292	85.3%	4.3 min	0.0%
PHX–PDX	Phoenix to Portland	256	78.9%	9.1 min	1.2%

By scheduled departure hour

100

On-time share:under 62%6270768288% and over

Share of departures that left less than 15 minutes late, by scheduled hour (local time), September 2025.

Delay causes

BTS cause category	Share of delay minutes	National, Sep 2025	Minutes
Air carrier	33.1%	34.3%	56,799
Late-arriving aircraft	43.4%	37.4%	74,441
National Aviation System	14.4%	22.6%	24,660
Extreme weather	8.9%	5.6%	15,362
Security	0.2%	0.1%	387

171,649 delay minutes on 2,307 flights that arrived 15 or more minutes late and carried a cause report. Carriers assign the categories; see what each category means.

Questions and answers

How many flights left PHX on time in September 2025?

80.4% of 13,772 scheduled domestic departures left less than 15 minutes late, and 82.0% reached their destination on time. The national figures that month were 83.1% and 82.8%.

How does that compare with a year earlier?

In September 2024, 84.9% of 15,081 departures left on time and 0.2% were cancelled, against 80.4% and 1.1% in September 2025.

Provenance

Source: Bureau of Transportation Statistics, Reporting Carrier On-Time Performance, file for September 2025; public domain. Domestic scheduled flights by reporting carriers, totals and averages only. The site's data runs through July 2026. Full record for PHX · methodology · corrections.