Louis Armstrong New Orleans International in December 2024

78.0%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 December 2024, reporting carriers scheduled 4,205 domestic departures from Louis Armstrong New Orleans International (MSY). 78.0% left less than 15 minutes late and 79.2% reached their destination on time; 0.5% were cancelled.

Nationally that month, 77.8% of flights departed on time and 78.1% arrived on time, so MSY departures were level with the national departure figure.

A year earlier, in December 2023, the airport had 4,279 departures with 82.4% leaving on time: a change of −4.4 points, with flights down 2%.

Flights arriving at MSY that month were on time 79.3% of the time (4,206 scheduled arrivals).

Of the delay minutes that carriers assigned to a BTS cause category that month, late-arriving aircraft 48%, air carrier 25% and national aviation system 22%.

On time 79.2%
Arrived 15+ minutes late 20.1%
Cancelled 0.5%
Diverted 0.2%

Every scheduled departure from MSY in December 2024, judged by arrival at the destination.

December 2024 against a year earlier, the airport's year and the nation

Measure	Dec 2024	Dec 2023	MSY, 12 months to Jul 2026	All reported flights, Dec 2024
Departed on time	78.0%	82.4%	76.0%	77.8%
Arrived on time	79.2%	84.9%	76.9%	78.1%
Cancelled	0.5%	0.3%	1.5%	0.7%
Average departure delay (late minutes only)	15.9 min	11.0 min	17.3 min	16.6 min
Scheduled departures a day	140	143	135	19,686
Scheduled departures	4,205	4,279	49,152	590,581

Airlines that month

Reporting carrier	Flights	Share	On time	Avg arrival delay	Cancelled
WN Southwest Airlines	1,549	37%	80.4%	6.8 min	0.1%
DL Delta Air Lines	639	15%	82.2%	1.1 min	0.0%
UA United Airlines	573	14%	83.8%	4.3 min	0.9%
AA American Airlines	568	14%	77.3%	14.0 min	0.7%
NK Spirit Airlines	437	10%	76.7%	10.1 min	0.9%
B6 JetBlue Airways	117	3%	62.4%	19.1 min	1.7%
YX Republic Airline	85	2%	80.0%	3.3 min	1.2%
MQ Envoy Air	70	2%	65.7%	10.0 min	0.0%
AS Alaska Airlines	55	1%	76.4%	-1.8 min	0.0%
F9 Frontier Airlines	53	1%	75.5%	2.7 min	0.0%
OH PSA Airlines	49	1%	59.2%	22.2 min	0.0%
G4 Allegiant Air	8	0%	87.5%	12.9 min	0.0%

Busiest routes that month

Route	Cities	Flights	On time	Avg arrival delay	Cancelled
MSY–ATL	New Orleans to Atlanta	389	80.5%	4.7 min	0.0%
MSY–IAH	New Orleans to Houston	251	82.9%	6.6 min	2.4%
MSY–DFW	New Orleans to Dallas/Fort Worth	231	65.4%	33.6 min	1.7%
MSY–DEN	New Orleans to Denver	209	85.2%	1.4 min	0.0%
MSY–DAL	New Orleans to Dallas	187	75.4%	14.2 min	0.0%
MSY–HOU	New Orleans to Houston	186	80.1%	8.5 min	0.5%
MSY–MCO	New Orleans to Orlando	183	79.8%	3.8 min	0.0%
MSY–CLT	New Orleans to Charlotte	178	79.8%	0.3 min	0.6%
MSY–DCA	New Orleans to Washington	148	68.9%	16.8 min	0.0%
MSY–ORD	New Orleans to Chicago	148	81.1%	0.1 min	0.7%
MSY–LAX	New Orleans to Los Angeles	144	83.3%	-1.0 min	0.7%
MSY–EWR	New Orleans to Newark	139	84.9%	6.6 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), December 2024.

Delay causes

BTS cause category	Share of delay minutes	National, Dec 2024	Minutes
Air carrier	24.9%	34.3%	15,029
Late-arriving aircraft	47.8%	40.2%	28,827
National Aviation System	21.9%	17.8%	13,229
Extreme weather	5.1%	7.5%	3,106
Security	0.2%	0.2%	147

60,338 delay minutes on 846 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 December 2024?

78.0% of 4,205 scheduled domestic departures left less than 15 minutes late, and 79.2% reached their destination on time. The national figures that month were 77.8% and 78.1%.

How does that compare with a year earlier?

In December 2023, 82.4% of 4,279 departures left on time and 0.3% were cancelled, against 78.0% and 0.5% in December 2024.

Provenance

Source: Bureau of Transportation Statistics, Reporting Carrier On-Time Performance, file for December 2024; 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.