How reliable is Montgomery Regional (Dannelly Field) Airport?
Flights from MGM departed within 15 minutes of schedule in 81% of 21,499 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 MGM looks like
On-time departures
across 21,499 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 MONTGOMERY
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 · 93/100 favorability
Roughest month
Most disruptive — low visibility & fog, thunderstorms · 87/100 favorability
The read on MGM
What the numbers say about flying through Montgomery Regional (Dannelly Field) Airport
Across official performance history, flights from MONTGOMERY left within 15 minutes of schedule about 81% of the time over 21,499 flights. That's a solid, better-than-average operational record. Pair it with a moderate cancellation rate of 2.3%. When a departure does run late, the typical delay is around 17 minutes.
On weather, MONTGOMERY is an unusually calm-weather airport year-round. October is the calmest stretch for flying, scoring 93 out of 100 for favorable conditions, while December is the most disruptive at 87, 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 MONTGOMERY, 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 MGM
- How reliable is Montgomery Regional (Dannelly Field) Airport (MGM)?
- Flights from MONTGOMERY left within 15 minutes of schedule roughly 81% of the time across 21,499 flights of official history — a solid, better-than-average operational record. The cancellation rate runs about 2.3%. It's advisory context, not a guarantee for any single flight.
- What is the best month to fly from MGM for good weather?
- October has the calmest flying weather at Montgomery Regional (Dannelly Field) Airport. December is the most disruptive, mainly from low visibility & fog and thunderstorms.
Planning a trip through MONTGOMERY?
Score real flights to and from MGM on reliability, weather, and connection safety — not just price.