Louis Armstrong New Orleans International in May 2026

70.4%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 May 2026, reporting carriers scheduled 4,194 domestic departures from Louis Armstrong New Orleans International (MSY). 70.4% left less than 15 minutes late and 72.7% reached their destination on time; 0.8% were cancelled.

Nationally that month, 77.1% of flights departed on time and 77.6% arrived on time, so MSY departures were 6.7 points below the national departure figure.

A year earlier, in May 2025, the airport had 4,483 departures with 73.7% leaving on time: a change of −3.3 points, with flights down 6%.

Flights arriving at MSY that month were on time 72.3% of the time (4,187 scheduled arrivals).

Of the delay minutes that carriers assigned to a BTS cause category that month, late-arriving aircraft 48%, air carrier 28% and national aviation system 16%.

On time 72.7%
Arrived 15+ minutes late 26.2%
Cancelled 0.8%
Diverted 0.3%

Every scheduled departure from MSY in May 2026, judged by arrival at the destination.

May 2026 against a year earlier, the airport's year and the nation

Measure	May 2026	May 2025	MSY, 12 months to Jul 2026	All reported flights, May 2026
Departed on time	70.4%	73.7%	76.0%	77.1%
Arrived on time	72.7%	75.2%	76.9%	77.6%
Cancelled	0.8%	1.0%	1.5%	0.9%
Average departure delay (late minutes only)	20.8 min	20.6 min	17.3 min	16.0 min
Scheduled departures a day	140	149	135	20,391
Scheduled departures	4,194	4,483	49,152	611,735

Airlines that month

Reporting carrier	Flights	Share	On time	Avg arrival delay	Cancelled
WN Southwest Airlines	1,628	39%	66.2%	15.2 min	0.1%
AA American Airlines	712	17%	75.7%	15.6 min	1.8%
DL Delta Air Lines	677	16%	77.5%	3.4 min	2.1%
UA United Airlines	601	14%	78.5%	4.0 min	0.3%
B6 JetBlue Airways	142	3%	79.6%	14.3 min	0.0%
F9 Frontier Airlines	94	2%	64.9%	46.6 min	0.0%
OH PSA Airlines	77	2%	70.1%	34.8 min	1.3%
AS Alaska Airlines	74	2%	78.4%	-1.6 min	0.0%
YX Republic Airline	70	2%	82.9%	2.2 min	1.4%
MQ Envoy Air	62	1%	79.0%	-0.4 min	1.6%
OO SkyWest Airlines	43	1%	72.1%	7.4 min	0.0%
G4 Allegiant Air	7	0%	100.0%	-16.4 min	0.0%

Busiest routes that month

Route	Cities	Flights	On time	Avg arrival delay	Cancelled
MSY–ATL	New Orleans to Atlanta	348	74.4%	10.0 min	0.9%
MSY–DFW	New Orleans to Dallas/Fort Worth	243	65.4%	31.3 min	4.1%
MSY–IAH	New Orleans to Houston	234	71.8%	21.1 min	0.0%
MSY–DEN	New Orleans to Denver	206	75.2%	5.2 min	0.5%
MSY–DAL	New Orleans to Dallas	201	67.2%	15.8 min	0.5%
MSY–HOU	New Orleans to Houston	193	60.6%	15.8 min	0.5%
MSY–ORD	New Orleans to Chicago	184	82.6%	1.3 min	1.1%
MSY–MCO	New Orleans to Orlando	180	68.3%	20.1 min	0.0%
MSY–DCA	New Orleans to Washington	171	64.9%	18.2 min	1.2%
MSY–CLT	New Orleans to Charlotte	164	82.9%	8.6 min	0.6%
MSY–AUS	New Orleans to Austin	162	70.4%	15.7 min	0.0%
MSY–LGA	New Orleans to New York	124	66.1%	13.7 min	1.6%

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), May 2026.

Delay causes

BTS cause category	Share of delay minutes	National, May 2026	Minutes
Air carrier	28.2%	33.0%	21,357
Late-arriving aircraft	47.6%	40.4%	36,036
National Aviation System	16.2%	20.5%	12,275
Extreme weather	7.9%	6.0%	6,002
Security	0.0%	0.1%	31

75,701 delay minutes on 1,097 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 May 2026?

70.4% of 4,194 scheduled domestic departures left less than 15 minutes late, and 72.7% reached their destination on time. The national figures that month were 77.1% and 77.6%.

How does that compare with a year earlier?

In May 2025, 73.7% of 4,483 departures left on time and 1.0% were cancelled, against 70.4% and 0.8% in May 2026.

Provenance

Source: Bureau of Transportation Statistics, Reporting Carrier On-Time Performance, file for May 2026; 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.