How reliable is Birmingham-Shuttlesworth International Airport?
Flights from BHM departed within 15 minutes of schedule in 82% of 105,952 flights in official BTS history — and weather is calmest in Sep. 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 BHM looks like
On-time departures
across 105,952 flights
Source: BTS Airport Operations · data through 2026-06-25. Role-specific BTS departure history; advisory context, not a guarantee for any flight.
Advertisement
Weather by month
When the weather works for you at Birmingham
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 · 89/100 favorability
The read on BHM
What the numbers say about flying through Birmingham-Shuttlesworth International Airport
Across official performance history, flights from Birmingham left within 15 minutes of schedule about 82% of the time over 105,952 flights. That's a solid, better-than-average operational record. Pair it with a moderate cancellation rate of 1.9%. When a departure does run late, the typical delay is around 12 minutes.
On weather, Birmingham is an unusually calm-weather airport year-round. September is the calmest stretch for flying, scoring 96 out of 100 for favorable conditions, while January is the most disruptive at 89, 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 Birmingham, 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 BHM
- How reliable is Birmingham-Shuttlesworth International Airport (BHM)?
- Flights from Birmingham left within 15 minutes of schedule roughly 82% of the time across 105,952 flights of official history — a solid, better-than-average 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 BHM for good weather?
- September has the calmest flying weather at Birmingham-Shuttlesworth International Airport. January is the most disruptive, mainly from low visibility & fog and thunderstorms.
Planning a trip through Birmingham?
Score real flights to and from BHM on reliability, weather, and connection safety — not just price.