Louis Armstrong New Orleans International in September 2023

79.8%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 September 2023, reporting carriers scheduled 3,616 domestic departures from Louis Armstrong New Orleans International (MSY). 79.8% left less than 15 minutes late and 80.4% reached their destination on time; 1.0% were cancelled.

Nationally that month, 80.5% of flights departed on time and 80.1% arrived on time, so MSY departures were 0.7 points below the national departure figure.

Flights arriving at MSY that month were on time 79.2% of the time (3,618 scheduled arrivals).

Of the delay minutes that carriers assigned to a BTS cause category that month, late-arriving aircraft 44%, air carrier 29% and national aviation system 23%.

On time 80.4%
Arrived 15+ minutes late 18.3%
Cancelled 1.0%
Diverted 0.3%

Every scheduled departure from MSY in September 2023, judged by arrival at the destination.

September 2023 against a year earlier, the airport's year and the nation

Measure	Sep 2023	Year earlier	MSY, 12 months to Jul 2026	All reported flights, Sep 2023
Departed on time	79.8%	—	76.0%	80.5%
Arrived on time	80.4%	—	76.9%	80.1%
Cancelled	1.0%	—	1.5%	1.2%
Average departure delay (late minutes only)	13.9 min	—	17.3 min	14.1 min
Scheduled departures a day	121	—	135	18,978
Scheduled departures	3,616	—	49,152	569,338

Airlines that month

Reporting carrier	Flights	Share	On time	Avg arrival delay	Cancelled
WN Southwest Airlines	1,446	40%	80.6%	5.1 min	0.6%
DL Delta Air Lines	550	15%	86.7%	-0.1 min	0.9%
UA United Airlines	470	13%	83.2%	4.2 min	1.3%
AA American Airlines	368	10%	80.7%	3.2 min	1.4%
NK Spirit Airlines	312	9%	78.2%	13.2 min	0.6%
B6 JetBlue Airways	138	4%	56.5%	26.8 min	2.9%
MQ Envoy Air	138	4%	79.0%	1.4 min	0.0%
OH PSA Airlines	72	2%	73.6%	7.3 min	1.4%
AS Alaska Airlines	57	2%	89.5%	1.4 min	0.0%
F9 Frontier Airlines	41	1%	61.0%	8.3 min	4.9%
YX Republic Airline	15	0%	80.0%	-12.2 min	20.0%
G4 Allegiant Air	8	0%	62.5%	11.0 min	0.0%

Busiest routes that month

Route	Cities	Flights	On time	Avg arrival delay	Cancelled
MSY–ATL	New Orleans to Atlanta	348	89.7%	-5.0 min	0.0%
MSY–DFW	New Orleans to Dallas/Fort Worth	210	81.4%	0.6 min	1.4%
MSY–IAH	New Orleans to Houston	201	76.6%	12.2 min	1.5%
MSY–DAL	New Orleans to Dallas	197	78.7%	7.6 min	0.0%
MSY–AUS	New Orleans to Austin	189	86.8%	-2.2 min	1.1%
MSY–MCO	New Orleans to Orlando	160	69.4%	17.2 min	1.3%
MSY–HOU	New Orleans to Houston	159	84.3%	2.1 min	0.6%
MSY–DCA	New Orleans to Washington	145	78.6%	4.0 min	2.1%
MSY–DEN	New Orleans to Denver	137	79.6%	6.4 min	0.0%
MSY–MIA	New Orleans to Miami	136	66.2%	14.7 min	0.7%
MSY–LAX	New Orleans to Los Angeles	133	88.0%	-0.1 min	0.0%
MSY–LGA	New Orleans to New York	130	77.7%	2.6 min	3.8%

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), September 2023.

Delay causes

BTS cause category	Share of delay minutes	National, Sep 2023	Minutes
Air carrier	28.8%	36.4%	12,789
Late-arriving aircraft	43.9%	38.3%	19,487
National Aviation System	22.7%	19.9%	10,096
Extreme weather	4.6%	5.1%	2,026
Security	0.0%	0.2%	10

44,408 delay minutes on 660 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 September 2023?

79.8% of 3,616 scheduled domestic departures left less than 15 minutes late, and 80.4% reached their destination on time. The national figures that month were 80.5% and 80.1%.

How does that compare with a year earlier?

September 2022 is outside the 36 months on file, or the airport had too few reported flights that month.

Provenance

Source: Bureau of Transportation Statistics, Reporting Carrier On-Time Performance, file for September 2023; 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.