Los Angeles International in April 2025

84.6%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 April 2025, reporting carriers scheduled 15,737 domestic departures from Los Angeles International (LAX). 84.6% left less than 15 minutes late and 84.7% reached their destination on time; 0.3% were cancelled.

Nationally that month, 80.6% of flights departed on time and 79.5% arrived on time, so LAX departures were 4.0 points above the national departure figure.

A year earlier, in April 2024, the airport had 15,718 departures with 82.3% leaving on time: a change of +2.3 points, with flights up 0%.

Flights arriving at LAX that month were on time 84.0% of the time (15,739 scheduled arrivals).

Of the delay minutes that carriers assigned to a BTS cause category that month, late-arriving aircraft 39%, air carrier 39% and national aviation system 20%.

On time 84.7%
Arrived 15+ minutes late 14.7%
Cancelled 0.3%
Diverted 0.3%

Every scheduled departure from LAX 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	LAX, 12 months to Jul 2026	All reported flights, Apr 2025
Departed on time	84.6%	82.3%	79.0%	80.6%
Arrived on time	84.7%	80.4%	79.0%	79.5%
Cancelled	0.3%	0.3%	0.9%	0.8%
Average departure delay (late minutes only)	11.3 min	13.7 min	15.1 min	14.1 min
Scheduled departures a day	525	524	521	19,465
Scheduled departures	15,737	15,718	190,106	583,950

Airlines that month

Reporting carrier	Flights	Share	On time	Avg arrival delay	Cancelled
OO SkyWest Airlines	3,433	22%	88.8%	-3.8 min	0.1%
DL Delta Air Lines	2,965	19%	84.5%	-1.1 min	0.1%
AA American Airlines	2,580	16%	76.7%	9.9 min	0.5%
UA United Airlines	2,231	14%	87.3%	-4.6 min	0.4%
WN Southwest Airlines	2,037	13%	86.5%	-4.7 min	0.4%
AS Alaska Airlines	626	4%	85.3%	-1.4 min	0.2%
NK Spirit Airlines	618	4%	85.3%	0.7 min	0.3%
B6 JetBlue Airways	603	4%	88.4%	-11.5 min	0.2%
F9 Frontier Airlines	366	2%	73.5%	13.1 min	0.3%
HA Hawaiian Airlines	200	1%	80.0%	2.7 min	0.0%
G4 Allegiant Air	52	0%	86.5%	-1.7 min	1.9%
MQ Envoy Air	26	0%	92.3%	23.2 min	0.0%

Busiest routes that month

Route	Cities	Flights	On time	Avg arrival delay	Cancelled
LAX–SFO	Los Angeles to San Francisco	918	80.8%	0.2 min	0.2%
LAX–JFK	Los Angeles to New York	850	84.4%	-4.1 min	0.4%
LAX–LAS	Los Angeles to Las Vegas	746	77.5%	8.1 min	0.0%
LAX–PHX	Los Angeles to Phoenix	678	85.3%	3.5 min	0.0%
LAX–DEN	Los Angeles to Denver	644	81.1%	2.1 min	0.2%
LAX–SEA	Los Angeles to Seattle	592	87.8%	-6.3 min	0.2%
LAX–DFW	Los Angeles to Dallas/Fort Worth	574	73.9%	13.3 min	1.6%
LAX–ORD	Los Angeles to Chicago	544	83.6%	-2.0 min	0.9%
LAX–SMF	Los Angeles to Sacramento	490	89.8%	-4.4 min	0.0%
LAX–IAH	Los Angeles to Houston	460	87.2%	-0.7 min	0.0%
LAX–SJC	Los Angeles to San Jose	433	92.6%	-8.8 min	0.0%
LAX–ATL	Los Angeles to Atlanta	419	76.8%	7.3 min	0.7%

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	38.5%	32.7%	59,792
Late-arriving aircraft	38.9%	39.4%	60,384
National Aviation System	20.4%	22.2%	31,737
Extreme weather	1.9%	5.5%	3,007
Security	0.2%	0.2%	275

155,195 delay minutes on 2,313 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 April 2025?

84.6% of 15,737 scheduled domestic departures left less than 15 minutes late, and 84.7% 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, 82.3% of 15,718 departures left on time and 0.3% were cancelled, against 84.6% and 0.3% 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 LAX · methodology · corrections.