Los Angeles International in December 2025

75.3%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 16,050 domestic departures from Los Angeles International (LAX). 75.3% left less than 15 minutes late and 76.8% reached their destination on time; 0.9% were cancelled.

Nationally that month, 72.0% of flights departed on time and 71.9% arrived on time, so LAX departures were 3.3 points above the national departure figure.

A year earlier, in December 2024, the airport had 16,495 departures with 81.7% leaving on time: a change of −6.4 points, with flights down 3%.

Flights arriving at LAX that month were on time 75.3% of the time (16,073 scheduled arrivals).

Of the delay minutes that carriers assigned to a BTS cause category that month, air carrier 42%, late-arriving aircraft 38% and national aviation system 17%.

On time 76.8%
Arrived 15+ minutes late 22.1%
Cancelled 0.9%
Diverted 0.2%

Every scheduled departure from LAX 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	LAX, 12 months to Jul 2026	All reported flights, Dec 2025
Departed on time	75.3%	81.7%	79.0%	72.0%
Arrived on time	76.8%	82.2%	79.0%	71.9%
Cancelled	0.9%	0.4%	0.9%	1.5%
Average departure delay (late minutes only)	18.1 min	13.3 min	15.1 min	21.2 min
Scheduled departures a day	535	550	521	19,410
Scheduled departures	16,050	16,495	190,106	582,304

Airlines that month

Reporting carrier	Flights	Share	On time	Avg arrival delay	Cancelled
OO SkyWest Airlines	3,397	21%	80.5%	6.1 min	0.6%
DL Delta Air Lines	3,049	19%	77.5%	7.1 min	1.6%
AA American Airlines	2,477	15%	75.0%	13.5 min	0.4%
UA United Airlines	2,465	15%	79.5%	3.6 min	0.1%
WN Southwest Airlines	2,158	13%	74.6%	7.8 min	0.2%
B6 JetBlue Airways	756	5%	68.4%	13.7 min	2.5%
AS Alaska Airlines	698	4%	84.1%	-2.5 min	0.6%
F9 Frontier Airlines	481	3%	67.4%	14.9 min	2.5%
NK Spirit Airlines	350	2%	68.6%	19.0 min	4.3%
HA Hawaiian Airlines	200	1%	61.0%	27.4 min	2.5%
G4 Allegiant Air	18	0%	72.2%	28.0 min	0.0%
MQ Envoy Air	1	0%	0.0%	22.0 min	0.0%

Busiest routes that month

Route	Cities	Flights	On time	Avg arrival delay	Cancelled
LAX–JFK	Los Angeles to New York	894	76.1%	10.9 min	2.5%
LAX–SFO	Los Angeles to San Francisco	842	65.1%	16.1 min	0.5%
LAX–LAS	Los Angeles to Las Vegas	682	75.7%	8.0 min	0.7%
LAX–PHX	Los Angeles to Phoenix	668	81.9%	4.6 min	0.4%
LAX–DEN	Los Angeles to Denver	651	79.6%	4.5 min	0.5%
LAX–SEA	Los Angeles to Seattle	629	80.3%	2.5 min	1.4%
LAX–ORD	Los Angeles to Chicago	569	72.1%	20.9 min	1.2%
LAX–DFW	Los Angeles to Dallas/Fort Worth	508	75.8%	10.9 min	0.0%
LAX–HNL	Los Angeles to Honolulu	490	68.8%	16.5 min	1.2%
LAX–EWR	Los Angeles to Newark	475	73.3%	9.6 min	1.5%
LAX–IAH	Los Angeles to Houston	448	78.3%	7.4 min	0.9%
LAX–ATL	Los Angeles to Atlanta	441	71.0%	14.1 min	1.1%

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	41.6%	33.3%	104,485
Late-arriving aircraft	38.4%	41.1%	96,560
National Aviation System	16.8%	19.1%	42,114
Extreme weather	3.1%	6.4%	7,834
Security	0.1%	0.2%	329

251,322 delay minutes on 3,545 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 LAX on time in December 2025?

75.3% of 16,050 scheduled domestic departures left less than 15 minutes late, and 76.8% 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, 81.7% of 16,495 departures left on time and 0.4% were cancelled, against 75.3% and 0.9% 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 LAX · methodology · corrections.