Best Time to Fly MDW to MSY: On-Time Stats by Hour & Airline
Chicago Midway International → Louis Armstrong New Orleans International
Data through July 2026 · Last updated October 18, 2026
Over the last 12 months, 75.7% of Chicago (MDW) to New Orleans (MSY) flights arrived on time (1,013 scheduled flights). That is 2.0 points below the national average of 77.6%.
Southwest Airlines was the only reporting airline with regular flights on this route.
Over 24 months, Tuesday was the most reliable day (86% on time) and June the worst month (62%).
The cancellation rate was 1.5% (US average 1.8%).
MDW to MSY on-time performance by airline
Last 12 months. Airlines with fewer than 30 completed flights are marked “limited data”.
| Airline | On time | Avg delay when late | Cancelled | Flights |
|---|---|---|---|---|
| Southwest Airlines | 75.7% | 48 min | 1.5% | 1,013 |
80%+ good 70–79.9% fair <70% poor
Best time of day to fly MDW to MSY
On-time arrival % by scheduled departure hour (local time), 2,012 flights over 24 months.
Show the numbers
| Departure hour | On time | Cancelled | Flights |
|---|---|---|---|
| 6am–7am | Limited data | 24 | |
| 7am–8am | 85.5% | 0.0% | 166 |
| 8am–9am | 87.9% | 0.9% | 342 |
| 9am–10am | 92.7% | 2.9% | 170 |
| 10am–11am | 91.9% | 0.0% | 37 |
| 11am–12pm | 64.9% | 0.0% | 57 |
| 12pm–1pm | 83.8% | 0.0% | 68 |
| 1pm–2pm | 86.8% | 0.0% | 53 |
| 2pm–3pm | 68.8% | 1.9% | 157 |
| 3pm–4pm | 50.8% | 0.0% | 62 |
| 4pm–5pm | 73.3% | 1.2% | 163 |
| 5pm–6pm | 76.6% | 4.1% | 49 |
| 6pm–7pm | 80.8% | 0.0% | 52 |
| 7pm–8pm | 82.7% | 0.0% | 110 |
| 8pm–9pm | 69.8% | 0.8% | 261 |
| 9pm–10pm | 62.9% | 2.8% | 211 |
| 10pm–11pm | Limited data | 30 | |
Best day of the week
24 months, by day of departure.
Best month to fly
24 months, by calendar month.
Holiday travel on MDW to MSY
On-time arrivals during holiday periods compared with all other days, last 24 months.
| Period | On time | vs other days | Cancelled | Flights |
|---|---|---|---|---|
| Thanksgiving week (Tue before to Mon after) | 75.0% | -6.3 pts | 5.9% | 34 |
| Christmas & New Year (Dec 20 - Jan 3) | 75.7% | -5.6 pts | 0.0% | 74 |
| Summer peak (Jun 15 - Aug 15) | 63.6% | -17.7 pts | 1.6% | 374 |
| All other days | 81.3% | — | 1.1% | 1,530 |
Monthly on-time trend
On-time arrival % each month, with the 12-month US average for reference.
What causes delays on this route
Share of reported delay minutes, last 12 months (BTS cause categories).