Historical on-time performance
Houston to Birmingham
562 miData through Dec 2025Source: US DOT · BTS
Flights on IAH–BHM arrive on time 58% of the time over the last 12 months.
On-time rate58%arrived within 15 min
p90 delay150 min1 in 10 flights is worse (tail risk)
Cancelled4.2%of scheduled flights
based on 48 flights over the last 12 months. On-time means arriving within 15 minutes (BTS standard).
By airline
How each carrier compares
- SkyWest AirlinesOn-time58%Medianon timep90150 minCancel4.2%Flights48
Why flights run late
Delay causes
- Airline8%
- Weather13%
- Air traffic (NAS)13%
- Late aircraft66%
- 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 IAH → BHM
All airlines · rolling 36 months (2023-01 .. 2025-12).
Best time of day
On-time rates are fairly even by time of day on this route — ranging from 65% to 86% on time.
- Overnights86% on time · p90 20 min · 90 flights · limited
- Mornings83% on time · p90 30 min · 65 flights · limited
- Afternoons79% on time · p90 50 min · 305 flights
- Middays78% on time · p90 35 min · 155 flights · limited
- Evenings65% on time · p90 80 min · 246 flights
Best day of week
On-time rates are fairly even by day on this route — ranging from 64% to 81% on time.
- Tuesdays81% on time · p90 25 min · 124 flights · limited
- Saturdays80% on time · p90 25 min · 122 flights · limited
- Sundays80% on time · p90 40 min · 132 flights · limited
- Thursdays77% on time · p90 45 min · 112 flights · limited
- Wednesdays75% on time · p90 55 min · 121 flights · limited
- Fridays73% on time · p90 65 min · 123 flights · limited
- Mondays64% on time · p90 85 min · 127 flights · limited
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