Historical on-time performance
Charleston to Chicago
745 miData through Dec 2025Source: US DOT · BTS
Flights on CHS–MDW arrive on time 88% of the time over the last 12 months.
On-time rate88%arrived within 15 min
p90 delay15 min1 in 10 flights is worse (tail risk)
Cancelled0.3%of scheduled flights
based on 290 flights over the last 12 months. On-time means arriving within 15 minutes (BTS standard).
By airline
How each carrier compares
- Southwest AirlinesOn-time88%Medianon timep9015 minCancel0.3%Flights290
Why flights run late
Delay causes
- Airline31%
- Weather0%
- Air traffic (NAS)14%
- Late aircraft55%
- 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 CHS → MDW
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 71% to 95% on time.
- Mornings95% on time · p90 5 min · 673 flights
- Middays93% on time · p90 5 min · 104 flights · limited
- Afternoons83% on time · p90 25 min · 96 flights · limited
- Evenings73% on time · p90 45 min · 442 flights
- Overnights71% on time · p90 35 min · 86 flights · limited
Best day of week
On-time rates are fairly even by day on this route — ranging from 82% to 91% on time.
- Fridays91% on time · p90 10 min · 200 flights
- Tuesdays86% on time · p90 20 min · 181 flights · limited
- Wednesdays86% on time · p90 20 min · 176 flights · limited
- Saturdays86% on time · p90 20 min · 195 flights · limited
- Thursdays85% on time · p90 25 min · 193 flights · limited
- Mondays83% on time · p90 25 min · 195 flights · limited
- Sundays82% on time · p90 30 min · 261 flights
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