How reliable is Louis Armstrong New Orleans International Airport?
Flights from MSY departed within 15 minutes of schedule in 79% of 287,729 flights in official BTS history — and weather is calmest in Oct. Here’s the full picture before you book.
Reliability score
on-time, cancellations & delays
Weather favorability
year-round climate
Origin-airport operations
What the departure punctuality at MSY looks like
On-time departures
across 287,729 flights
Source: BTS Airport Operations · data through 2026-06-25. Role-specific BTS departure history; advisory context, not a guarantee for any flight.
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Weather by month
When the weather works for you at New Orleans
A calm-weather score (0–100) for each month from decades of airport observations — how often conditions disrupt flying, not temperature. Higher is calmer.
Calmest month
Calmest flying weather of the year · 96/100 favorability
Roughest month
Most disruptive — low visibility & fog, thunderstorms · 86/100 favorability
The read on MSY
What the numbers say about flying through Louis Armstrong New Orleans International Airport
Across official performance history, flights from New Orleans left within 15 minutes of schedule about 79% of the time over 287,729 flights. That's a respectable but unspectacular operational record. Pair it with a moderate cancellation rate of 1.9%. When a departure does run late, the typical delay is around 13 minutes.
On weather, New Orleans is an unusually calm-weather airport year-round. October is the calmest stretch for flying, scoring 96 out of 100 for favorable conditions, while January is the most disruptive at 86, driven mainly by low visibility & fog and thunderstorms. The year is relatively steady, so no single month stands out as one to avoid on weather alone.
None of this guarantees your specific flight — it’s the backdrop. To turn it into a booking, score real flights to New Orleans, read how we weigh it all in how the PlaneSane Score works, and brush up with how to pick a reliable flight and avoiding weather delays.
Common questions about MSY
- How reliable is Louis Armstrong New Orleans International Airport (MSY)?
- Flights from New Orleans left within 15 minutes of schedule roughly 79% of the time across 287,729 flights of official history — a respectable but unspectacular operational record. The cancellation rate runs about 1.9%. It's advisory context, not a guarantee for any single flight.
- What is the best month to fly from MSY for good weather?
- October has the calmest flying weather at Louis Armstrong New Orleans International Airport. January is the most disruptive, mainly from low visibility & fog and thunderstorms.
Planning a trip through New Orleans?
Score real flights to and from MSY on reliability, weather, and connection safety — not just price.