Phoenix Sky Harbor International in April 2025

81.0%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 April 2025, reporting carriers scheduled 18,188 domestic departures from Phoenix Sky Harbor International (PHX). 81.0% left less than 15 minutes late and 81.3% reached their destination on time; 0.4% were cancelled.

Nationally that month, 80.6% of flights departed on time and 79.5% arrived on time, so PHX departures were level with the national departure figure.

A year earlier, in April 2024, the airport had 16,531 departures with 80.1% leaving on time: a change of +0.9 points, with flights up 10%.

Flights arriving at PHX that month were on time 82.0% of the time (18,193 scheduled arrivals).

Of the delay minutes that carriers assigned to a BTS cause category that month, late-arriving aircraft 44%, air carrier 38% and national aviation system 17%.

On time 81.3%
Arrived 15+ minutes late 18.1%
Cancelled 0.4%
Diverted 0.2%

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

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

Measure	Apr 2025	Apr 2024	PHX, 12 months to Jul 2026	All reported flights, Apr 2025
Departed on time	81.0%	80.1%	76.1%	80.6%
Arrived on time	81.3%	81.6%	77.4%	79.5%
Cancelled	0.4%	0.3%	0.9%	0.8%
Average departure delay (late minutes only)	12.3 min	12.8 min	15.8 min	14.1 min
Scheduled departures a day	606	551	542	19,465
Scheduled departures	18,188	16,531	197,642	583,950

Airlines that month

Reporting carrier	Flights	Share	On time	Avg arrival delay	Cancelled
WN Southwest Airlines	6,084	33%	79.7%	4.8 min	0.6%
AA American Airlines	4,877	27%	78.6%	7.2 min	0.4%
OO SkyWest Airlines	3,000	16%	85.4%	1.4 min	0.2%
UA United Airlines	981	5%	83.8%	1.2 min	0.4%
DL Delta Air Lines	932	5%	86.4%	-1.0 min	0.4%
MQ Envoy Air	805	4%	85.7%	-0.7 min	0.2%
F9 Frontier Airlines	798	4%	79.1%	5.3 min	0.3%
AS Alaska Airlines	500	3%	84.6%	0.6 min	0.0%
B6 JetBlue Airways	105	1%	80.0%	3.5 min	0.0%
NK Spirit Airlines	41	0%	73.2%	7.6 min	2.4%
G4 Allegiant Air	35	0%	82.9%	-1.9 min	0.0%
HA Hawaiian Airlines	30	0%	90.0%	-4.2 min	0.0%

Busiest routes that month

Route	Cities	Flights	On time	Avg arrival delay	Cancelled
PHX–DEN	Phoenix to Denver	868	72.8%	10.4 min	1.3%
PHX–LAX	Phoenix to Los Angeles	678	86.4%	0.0 min	0.0%
PHX–SEA	Phoenix to Seattle	665	85.4%	0.0 min	0.0%
PHX–LAS	Phoenix to Las Vegas	605	77.0%	7.4 min	0.8%
PHX–ORD	Phoenix to Chicago	533	83.9%	-2.0 min	0.6%
PHX–SLC	Phoenix to Salt Lake City	510	84.7%	-0.7 min	0.0%
PHX–SFO	Phoenix to San Francisco	498	77.7%	7.0 min	0.0%
PHX–DFW	Phoenix to Dallas/Fort Worth	488	77.9%	6.6 min	2.7%
PHX–SAN	Phoenix to San Diego	451	77.6%	7.7 min	0.7%
PHX–PDX	Phoenix to Portland	383	82.8%	2.3 min	0.0%
PHX–SNA	Phoenix to Santa Ana	359	85.0%	0.9 min	0.6%
PHX–SMF	Phoenix to Sacramento	350	82.6%	2.9 min	0.3%

By scheduled departure hour

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

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

Delay causes

BTS cause category	Share of delay minutes	National, Apr 2025	Minutes
Air carrier	38.3%	32.7%	73,640
Late-arriving aircraft	43.6%	39.4%	83,950
National Aviation System	16.8%	22.2%	32,406
Extreme weather	1.2%	5.5%	2,268
Security	0.1%	0.2%	224

192,488 delay minutes on 3,293 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 April 2025?

81.0% of 18,188 scheduled domestic departures left less than 15 minutes late, and 81.3% reached their destination on time. The national figures that month were 80.6% and 79.5%.

How does that compare with a year earlier?

In April 2024, 80.1% of 16,531 departures left on time and 0.3% were cancelled, against 81.0% and 0.4% in April 2025.

Provenance

Source: Bureau of Transportation Statistics, Reporting Carrier On-Time Performance, file for April 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.