Louis Armstrong New Orleans International in April 2025

79.2%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 4,529 domestic departures from Louis Armstrong New Orleans International (MSY). 79.2% left less than 15 minutes late and 79.7% reached their destination on time; 0.9% were cancelled.

Nationally that month, 80.6% of flights departed on time and 79.5% arrived on time, so MSY departures were 1.4 points below the national departure figure.

A year earlier, in April 2024, the airport had 4,320 departures with 79.8% leaving on time: a change of −0.6 points, with flights up 5%.

Flights arriving at MSY that month were on time 78.4% of the time (4,530 scheduled arrivals).

Of the delay minutes that carriers assigned to a BTS cause category that month, late-arriving aircraft 46%, air carrier 29% and national aviation system 19%.

On time 79.7%
Arrived 15+ minutes late 19.1%
Cancelled 0.9%
Diverted 0.3%

Every scheduled departure from MSY 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	MSY, 12 months to Jul 2026	All reported flights, Apr 2025
Departed on time	79.2%	79.8%	76.0%	80.6%
Arrived on time	79.7%	79.9%	76.9%	79.5%
Cancelled	0.9%	0.8%	1.5%	0.8%
Average departure delay (late minutes only)	17.2 min	17.6 min	17.3 min	14.1 min
Scheduled departures a day	151	144	135	19,465
Scheduled departures	4,529	4,320	49,152	583,950

Airlines that month

Reporting carrier	Flights	Share	On time	Avg arrival delay	Cancelled
WN Southwest Airlines	1,576	35%	79.1%	6.0 min	0.8%
AA American Airlines	705	16%	73.6%	22.0 min	2.1%
DL Delta Air Lines	672	15%	82.4%	5.1 min	0.6%
UA United Airlines	591	13%	83.2%	6.9 min	0.8%
NK Spirit Airlines	504	11%	81.7%	4.5 min	0.6%
OH PSA Airlines	112	2%	78.6%	16.1 min	0.0%
AS Alaska Airlines	90	2%	82.2%	-0.5 min	0.0%
B6 JetBlue Airways	90	2%	83.3%	-3.8 min	0.0%
OO SkyWest Airlines	60	1%	86.7%	-0.1 min	0.0%
F9 Frontier Airlines	53	1%	77.4%	11.2 min	0.0%
MQ Envoy Air	53	1%	73.6%	15.6 min	3.8%
YX Republic Airline	15	0%	93.3%	5.2 min	0.0%

Busiest routes that month

Route	Cities	Flights	On time	Avg arrival delay	Cancelled
MSY–ATL	New Orleans to Atlanta	370	81.9%	6.5 min	1.1%
MSY–IAH	New Orleans to Houston	259	88.0%	0.9 min	0.4%
MSY–DFW	New Orleans to Dallas/Fort Worth	254	67.3%	22.2 min	5.9%
MSY–MCO	New Orleans to Orlando	204	84.8%	4.2 min	0.0%
MSY–HOU	New Orleans to Houston	200	80.5%	5.8 min	1.0%
MSY–CLT	New Orleans to Charlotte	197	84.8%	2.8 min	1.0%
MSY–DAL	New Orleans to Dallas	197	75.1%	5.5 min	3.6%
MSY–DEN	New Orleans to Denver	192	76.6%	7.8 min	0.5%
MSY–AUS	New Orleans to Austin	177	78.5%	4.6 min	0.6%
MSY–ORD	New Orleans to Chicago	177	84.2%	6.9 min	1.7%
MSY–MIA	New Orleans to Miami	170	67.6%	27.4 min	0.0%
MSY–LAX	New Orleans to Los Angeles	164	82.9%	4.2 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), April 2025.

Delay causes

BTS cause category	Share of delay minutes	National, Apr 2025	Minutes
Air carrier	29.1%	32.7%	20,727
Late-arriving aircraft	45.9%	39.4%	32,716
National Aviation System	18.6%	22.2%	13,273
Extreme weather	6.3%	5.5%	4,490
Security	0.0%	0.2%	11

71,217 delay minutes on 865 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 MSY on time in April 2025?

79.2% of 4,529 scheduled domestic departures left less than 15 minutes late, and 79.7% 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, 79.8% of 4,320 departures left on time and 0.8% were cancelled, against 79.2% and 0.9% 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 MSY · methodology · corrections.