Historical on-time performance
Chicago to Birmingham
570 miData through Dec 2025Source: US DOT · BTS
Flights on MDW–BHM arrive on time 77% of the time over the last 12 months.
On-time rate77%arrived within 15 min
p90 delay40 min1 in 10 flights is worse (tail risk)
Cancelled1.1%of scheduled flights
based on 522 flights over the last 12 months. On-time means arriving within 15 minutes (BTS standard).
By airline
How each carrier compares
- Southwest AirlinesOn-time77%Medianon timep9040 minCancel1.1%Flights522
Why flights run late
Delay causes
- Airline28%
- Weather2%
- Air traffic (NAS)12%
- Late aircraft58%
- 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 MDW → 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.
- Middays86% on time · p90 15 min · 230 flights
- Mornings84% on time · p90 20 min · 661 flights
- Evenings82% on time · p90 25 min · 116 flights · limited
- Afternoons70% on time · p90 35 min · 101 flights · limited
- Overnights65% on time · p90 55 min · 710 flights
Best day of week
On-time rates are fairly even by day on this route — ranging from 72% to 82% on time.
- Tuesdays82% on time · p90 30 min · 260 flights
- Saturdays81% on time · p90 25 min · 160 flights · limited
- Wednesdays76% on time · p90 35 min · 258 flights
- Thursdays75% on time · p90 40 min · 289 flights
- Mondays75% on time · p90 40 min · 293 flights
- Sundays72% on time · p90 45 min · 264 flights
- Fridays72% on time · p90 40 min · 294 flights
Advertisement
Keep exploring