Phoenix Sky Harbor International in December 2025

75.6%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 December 2025, reporting carriers scheduled 17,689 domestic departures from Phoenix Sky Harbor International (PHX). 75.6% left less than 15 minutes late and 77.8% reached their destination on time; 0.5% were cancelled.

Nationally that month, 72.0% of flights departed on time and 71.9% arrived on time, so PHX departures were 3.6 points above the national departure figure.

A year earlier, in December 2024, the airport had 17,342 departures with 80.7% leaving on time: a change of −5.1 points, with flights up 2%.

Flights arriving at PHX that month were on time 78.4% of the time (17,668 scheduled arrivals).

Of the delay minutes that carriers assigned to a BTS cause category that month, late-arriving aircraft 47%, air carrier 38% and national aviation system 13%.

On time 77.8%
Arrived 15+ minutes late 21.4%
Cancelled 0.5%
Diverted 0.2%

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

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

Measure	Dec 2025	Dec 2024	PHX, 12 months to Jul 2026	All reported flights, Dec 2025
Departed on time	75.6%	80.7%	76.1%	72.0%
Arrived on time	77.8%	82.0%	77.4%	71.9%
Cancelled	0.5%	0.3%	0.9%	1.5%
Average departure delay (late minutes only)	15.4 min	12.7 min	15.8 min	21.2 min
Scheduled departures a day	590	578	542	19,410
Scheduled departures	17,689	17,342	197,642	582,304

Airlines that month

Reporting carrier	Flights	Share	On time	Avg arrival delay	Cancelled
WN Southwest Airlines	5,992	34%	72.8%	9.4 min	0.4%
AA American Airlines	4,975	28%	78.8%	7.0 min	0.1%
OO SkyWest Airlines	2,487	14%	81.2%	5.2 min	0.6%
MQ Envoy Air	981	6%	84.9%	-1.3 min	0.4%
UA United Airlines	973	6%	85.3%	1.0 min	0.5%
DL Delta Air Lines	955	5%	80.8%	2.0 min	2.2%
F9 Frontier Airlines	600	3%	80.2%	3.4 min	1.3%
AS Alaska Airlines	484	3%	78.3%	1.9 min	0.4%
B6 JetBlue Airways	155	1%	64.5%	12.0 min	1.9%
G4 Allegiant Air	34	0%	73.5%	11.9 min	0.0%
HA Hawaiian Airlines	31	0%	83.9%	-3.6 min	0.0%
NK Spirit Airlines	22	0%	68.2%	29.0 min	4.5%

Busiest routes that month

Route	Cities	Flights	On time	Avg arrival delay	Cancelled
PHX–DEN	Phoenix to Denver	771	77.2%	6.7 min	0.8%
PHX–LAX	Phoenix to Los Angeles	668	81.3%	1.7 min	0.4%
PHX–SEA	Phoenix to Seattle	627	76.6%	3.7 min	0.5%
PHX–SLC	Phoenix to Salt Lake City	515	83.1%	0.6 min	0.6%
PHX–LAS	Phoenix to Las Vegas	496	76.6%	6.4 min	0.2%
PHX–ORD	Phoenix to Chicago	490	79.2%	8.1 min	0.4%
PHX–SAN	Phoenix to San Diego	463	67.4%	12.6 min	0.6%
PHX–DFW	Phoenix to Dallas/Fort Worth	426	82.9%	0.9 min	0.0%
PHX–SFO	Phoenix to San Francisco	425	73.9%	15.4 min	0.5%
PHX–SNA	Phoenix to Santa Ana	401	76.6%	6.5 min	0.0%
PHX–SMF	Phoenix to Sacramento	349	84.2%	-0.5 min	0.0%
PHX–PDX	Phoenix to Portland	343	70.8%	7.5 min	0.0%

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), December 2025.

Delay causes

BTS cause category	Share of delay minutes	National, Dec 2025	Minutes
Air carrier	37.9%	33.3%	85,267
Late-arriving aircraft	46.9%	41.1%	105,296
National Aviation System	12.8%	19.1%	28,777
Extreme weather	2.1%	6.4%	4,760
Security	0.3%	0.2%	631

224,731 delay minutes on 3,793 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 December 2025?

75.6% of 17,689 scheduled domestic departures left less than 15 minutes late, and 77.8% reached their destination on time. The national figures that month were 72.0% and 71.9%.

How does that compare with a year earlier?

In December 2024, 80.7% of 17,342 departures left on time and 0.3% were cancelled, against 75.6% and 0.5% in December 2025.

Provenance

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