New Orleans (MSY) to Las Vegas (LAS): On-Time Performance
Data through July 2026
The calendar drives reliability on MSY–LAS. December 2024 flights landed on schedule 90% of the time, but July 2024 dropped to 68% — a gap of 22 points. Across the full period the route averages 80% on-time against a national 78%. Morning departures also hold up better than evening ones (92% vs 67%), which matters most in the rough months.
- On-time
- 80%
- arrived <15 min late
- Avg delay
- 12 min
- completed flights
- Cancelled
- 0.6%
- Flights/day
- 2.3
- last 12 months
- Duration
- 3h 50m
- scheduled
- Distance
- 1,500 mi
Best airline from MSY to LAS
2 airlines flew this route regularly between 2024-07 and 2026-07.
| Airline | On-time | Avg delay | Cancelled | Flights |
|---|---|---|---|---|
| Southwest Airlinesmost reliable | 80% | 11 min | 0.3% | 1,464 |
| Spirit Airlines | 80% | 14 min | 1.3% | 475 |
Monthly on-time trend
Best time to fly from MSY to LAS
Aim for departures around 5 a.m. (95% on-time); avoid 8 p.m. departures (58%).
By day of week
| Day | On-time | Avg delay |
|---|---|---|
| Monday | 79% | 11 min |
| Tuesday | 86% | 7 min |
| Wednesdaybest | 88% | 7 min |
| Thursday | 74% | 14 min |
| Friday | 73% | 18 min |
| Saturday | 86% | 7 min |
| Sunday | 77% | 18 min |
What causes delays on this route
Share of total delay minutes by cause, as reported by carriers to the US DOT.
- Late-arriving aircraft42%
- Airline operations31%
- National airspace system20%
- Weather7%
Frequently asked questions
- How often are flights from MSY to LAS delayed?
- 20% of MSY–LAS flights arrived 15 or more minutes late (the US DOT definition of a delay) between 2024-07 and 2026-07. The average arrival delay across completed flights was 12 minutes.
- Which airline is most reliable from MSY to LAS?
- Southwest Airlines has the best on-time record on this route at 80%, based on 1,464 flights. 2 airlines flew MSY–LAS frequently enough to compare in this period.
- What is the best time of day to fly from MSY to LAS?
- Departures around 5 a.m. have the best record (95% on-time), while departures around 8 p.m. have the worst (58%). As on most US routes, delays accumulate through the day, so earlier flights are generally safer.
- How long is the flight from MSY to LAS?
- The scheduled MSY–LAS flight time averages 3h 50m over 1,500 miles. Actual arrival times vary — flights on this route land 15+ minutes late 20% of the time.
- How often are MSY to LAS flights cancelled?
- 0.6% of scheduled flights on this route were cancelled between 2024-07 and 2026-07, at or below the national rate of 1.6%.
- What is the worst month to fly from MSY to LAS?
- July 2024 was the roughest month in this dataset, with only 68% of arrivals on time. The best was December 2024 at 90%. If your dates are flexible, that 22-point gap is worth planning around.
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Based on 1,962 flights, 2024-07–2026-07. Source: US DOT Bureau of Transportation Statistics. Updated 2026-09-28.