Airport month record
MSYJUN
Louis Armstrong New Orleans International in June 2026
- Departures
- 3,709
- Month
- June 2026
- National, same month
- 74.3%
- Carriers
- 11
Historical statistics for June 2026, not live status or a forecast for this year’s June. For today’s conditions at MSY, see live FAA status.
MSY in June sits in the middle of the pack with a C. About seven flights in ten arrive on time by the DOT's definition, 4 points worse than the national rate of 74.3%. The late ones land a little over an hour behind schedule. That rests on 3,709 flights, of which Delta Air Lines flew 588 at 80.3% on time.
Delta Air Lines is the most reliable of the four carriers covered here at 80.3% on time across 588 flights.
Key figures
On time
70.0%
Arrivals under 15 minutes late, of 3,644 completed departures
Avg delay
78 min
Across delayed arrivals only, not all flights
Cancelled
1.11%
Nationally in June: 1.65%
Whole year
78.5%
MSY across all twelve months
These figures cover 3,709 departures from Louis Armstrong New Orleans International in June 2026. On time means an arrival less than 15 minutes after the scheduled gate time, the DOT's threshold, and the national comparison uses every US departure in the same month rather than the whole year.
Against the year
June next to MSY's other months
Against MSY's own year, June ran 9 points worse than the twelve-month rate of 78.5%, which makes it the worst of the twelve months in the data.
| Month | Flights | On time | Avg delay | Cancelled | Grade |
|---|---|---|---|---|---|
| July 2025 | 4,039 | 71.9% | 82 min | 1.81% | C |
| August 2025 | 3,739 | 80.2% | 80 min | 1.10% | B |
| September 2025 | 3,619 | 85.9% | 70 min | 0.36% | A+ |
| October 2025 | 4,699 | 78.9% | 56 min | 0.53% | B+ |
| November 2025 | 4,314 | 81.1% | 80 min | 1.27% | B |
| December 2025 | 4,152 | 78.0% | 74 min | 1.28% | B |
| January 2026 | 3,901 | 84.9% | 72 min | 4.13% | B− |
| February 2026 | 4,111 | 82.8% | 68 min | 1.82% | B |
| March 2026 | 4,485 | 75.3% | 75 min | 2.79% | B |
| April 2026 | 4,428 | 80.1% | 63 min | 0.65% | B+ |
| May 2026 | 4,194 | 73.5% | 69 min | 0.83% | C+ |
| June 2026 (this page) | 3,709 | 70.0% | 78 min | 1.11% | C |
Departure window
The best time of day to leave MSY in June
Departure time matters more here than the choice of carrier. The gap between the best and worst window is 37 points, against 15 points between the best and worst carrier. Each bar is the on-time rate for flights scheduled inside that window.
- 5am–8am824 flights86.7%
- 8am–11am577 flights84.0%
- 11am–2pm551 flights73.1%
- 2pm–5pm761 flights60.2%
- 5pm–8pm817 flights54.4%
- 8pm–5am179 flights49.7%
Scale runs 40% to 90%. Rows with fewer than 30 flights show a dash.
The 8pm–5am window is where this operation falls apart: 49.7% on time, against 86.7% for the 5am–8am slot. By evening the aircraft flying these rotations have absorbed a full day of small delays and there is no slack left to recover in. The 5am–8am window is the busiest, with 824 flights scheduled in it.
Across the week, Tuesday is the strongest day at 80.6% on time and Thursday the weakest at 62.5%. 18 points is a smaller lever than departure hour, but it is free.
Carrier by carrier
Which airlines ran best at MSY in June
The choice of carrier is not cosmetic here. Delta Air Lines arrives on time 80.3% of the time; Southwest Airlines manages 65.3%. Sample sizes sit next to every figure, because a two-point gap across 1,488 flights means less than a ten-point one.
| Airline | Flights | On time | Avg delay | Cancelled | Grade |
|---|---|---|---|---|---|
| Southwest Airlines | 1,488 | 65.3% | 64 min | 0.13% | C+ |
| American Airlines | 612 | 67.3% | 121 min | 2.45% | C |
| Delta Air Lines | 588 | 80.3% | 59 min | 1.70% | B |
| United Airlines | 485 | 75.7% | 77 min | 0.41% | B+ |
| JetBlue Airwaysthin sample | 121 | 68.3% | 63 min | 0.00% | C+ |
| PSA Airlinesthin sample | 96 | 72.5% | 154 min | 5.21% | C− |
| Frontier Airlinesthin sample | 85 | 68.3% | 94 min | 3.53% | C− |
| SkyWest Airlinesthin sample | 81 | 63.3% | 78 min | 2.47% | D |
| Alaska Airlinesthin sample | 60 | 65.5% | 80 min | 1.67% | C |
| Envoy Airthin sample | 53 | 76.5% | 56 min | 1.89% | B |
| Republic Airwaysthin sample | 40 | 78.4% | 88 min | 0.00% | B+ |
The spread between Delta and Southwest is 15 points, wide enough that it should decide the booking. On a hundred trips that is 15 more arrivals inside the on-time window.
Route by route
Busiest routes out of MSY in June
| Route | Flights | On time | Avg delay | Cancelled | Grade |
|---|---|---|---|---|---|
| MSY to ATL · Atlantathin sample | 304 | 81.1% | 52 min | 0.66% | B+ |
| MSY to DFW · Dallas-Fort Worththin sample | 227 | 62.7% | 93 min | 5.73% | D− |
| MSY to IAH · Houstonthin sample | 206 | 73.2% | 89 min | 0.49% | C+ |
| MSY to ORD · Chicagothin sample | 206 | 68.0% | 88 min | 2.43% | C |
| MSY to HOU · Houstonthin sample | 192 | 66.7% | 59 min | 0.00% | C+ |
| MSY to MCO · Orlandothin sample | 177 | 73.6% | 63 min | 0.56% | C+ |
| MSY to DEN · Denverthin sample | 163 | 66.0% | 62 min | 0.61% | C+ |
| MSY to DAL · Dallasthin sample | 162 | 57.2% | 63 min | 0.00% | D+ |
| MSY to AUS · Austinthin sample | 159 | 64.2% | 55 min | 0.00% | D+ |
| MSY to DCA · Washingtonthin sample | 142 | 65.2% | 114 min | 3.52% | C− |
| MSY to CLT · Charlottethin sample | 128 | 69.5% | 169 min | 0.00% | C+ |
| MSY to MIA · Miamithin sample | 120 | 84.2% | 126 min | 0.00% | B+ |
| MSY to BNA · Nashvillethin sample | 116 | 60.3% | 60 min | 0.00% | D+ |
| MSY to LGA · New Yorkthin sample | 115 | 66.7% | 104 min | 2.61% | C |
| MSY to LAX · Los Angelesthin sample | 101 | 70.0% | 63 min | 0.99% | C+ |
| MSY to PHL · Philadelphiathin sample | 100 | 74.7% | 103 min | 1.00% | C |
| MSY to FLL · Fort Lauderdalethin sample | 95 | 68.4% | 52 min | 0.00% | C+ |
| MSY to MDW · Chicagothin sample | 90 | 70.5% | 70 min | 1.11% | C |
| MSY to JFK · New Yorkthin sample | 89 | 71.4% | 69 min | 4.49% | C− |
| MSY to EWR · Newarkthin sample | 86 | 90.6% | 56 min | 0.00% | A+ |
| MSY to BWI · Baltimorethin sample | 86 | 76.7% | 84 min | 0.00% | B+ |
| MSY to LAS · Las Vegasthin sample | 83 | 69.9% | 59 min | 0.00% | C+ |
| MSY to PHX · Phoenixthin sample | 63 | 69.8% | 110 min | 0.00% | C+ |
| MSY to BOS · Bostonthin sample | 60 | 66.7% | 76 min | 0.00% | C+ |
| MSY to SEA · Seattlethin sample | 60 | 65.5% | 80 min | 1.67% | C |
Delay causes
What held MSY up in June
One category carries most of the weight here. Late-arriving aircraft accounts for 47% of the 86,000 delay minutes carriers reported, and the remaining four split what is left. The split is by minutes rather than by flights, so a few very long delays count for as much as many short ones.
- 47%Late-arriving aircraft
- 26%Carrier
- 18%National Airspace System
- 9%Extreme weather
47% of delay minutes trace back to a late-arriving aircraft, meaning the plane was already behind before it got here. That is a cascade, and cascades start small and grow through the day. Across 86,000 reported delay minutes here, that single category outweighs weather by 5 to one. It is the strongest argument for booking the first departure of the morning, when the aircraft has been sitting at the gate overnight with nothing to inherit. The split is drawn from 85,656 reported delay minutes.
Cancellations sit at 1.11% against a national 1.65%, which is ordinary. Diversions add another 0.65%.
For anyone connecting, the number to weigh is not the on-time rate but the tail behind it. 12.4% of arrivals land a full hour or more behind schedule, against 9.7% nationally. A 45-minute layover does not survive that, and no amount of walking quickly changes it. Ninety minutes is the honest minimum here, and two hours if the onward flight is on a separate ticket.
What to do with this
Flying from MSY in June
For a June trip through MSY: plan on this being one of the airport's harder months. The 5am–8am departures held up best at 86.7% on time, and with 12.4% of arrivals an hour or more late, a connection here deserves more slack than the same trip in September would.
Related
Where to go next
- Louis Armstrong New Orleans International (MSY), the whole year
- MSY in July71.9%
- MSY in August80.2%
- MSY in September85.9%
- MSY in October78.9%
- MSY in November81.1%
- MSY in December78.0%
- MSY in January84.9%
- MSY in February82.8%
- MSY in March75.3%
- MSY in April80.1%
- MSY in May73.5%
Source: US DOT Bureau of Transportation Statistics, on-time performance data, July 2025 to June 2026. Last updated 15 September 2026; recomputed monthly. How this data is collected.