Historical on-time performance
Miami to Birmingham
661 miData through Dec 2025Source: US DOT · BTS
Flights on MIA–BHM arrive on time 83% of the time over the last 12 months.
On-time rate83%arrived within 15 min
p90 delay30 min1 in 10 flights is worse (tail risk)
Cancelled1.5%of scheduled flights
based on 722 flights over the last 12 months. On-time means arriving within 15 minutes (BTS standard).
By airline
How each carrier compares
Too close to call — no single carrier is clearly more on-time here.
- Envoy AirOn-time84%Medianon timep9025 minCancel1.4%Flights691
- American AirlinesOn-time71%Medianon timep9095 minCancel3.2%Flights31
Why flights run late
Delay causes
- Airline22%
- Weather9%
- Air traffic (NAS)30%
- Late aircraft39%
- Security0%
Most delay minutes here are attributed to Late aircraft.
Over time
On-time trend
By season
On-time rate by month
When to fly
Best time to fly MIA → BHM
All airlines · rolling 36 months (2023-01 .. 2025-12).
Best time of day
Mornings are the most reliable time of day to fly this route — 92% on time.
- Mornings92% on time · p90 5 min · 138 flights · limited
- Overnights77% on time · p90 35 min · 1,056 flights
- Evenings68% on time · p90 55 min · 608 flights
- Afternoons65% on time · p90 70 min · 324 flights
Best day of week
On-time rates are fairly even by day on this route — ranging from 69% to 81% on time.
- Tuesdays81% on time · p90 35 min · 302 flights
- Wednesdays78% on time · p90 40 min · 297 flights
- Mondays78% on time · p90 45 min · 318 flights
- Saturdays74% on time · p90 40 min · 312 flights
- Fridays70% on time · p90 45 min · 314 flights
- Thursdays70% on time · p90 50 min · 309 flights
- Sundays69% on time · p90 60 min · 309 flights
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