Historical on-time performance
Chicago to Charleston
745 miData through Dec 2025Source: US DOT · BTS
Flights on MDW–CHS arrive on time 75% of the time over the last 12 months.
On-time rate75%arrived within 15 min
p90 delay50 min1 in 10 flights is worse (tail risk)
Cancelled1.0%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-time75%Medianon timep9050 minCancel1.0%Flights290
Why flights run late
Delay causes
- Airline38%
- Weather0%
- Air traffic (NAS)11%
- Late aircraft50%
- Security1%
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 → CHS
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 61% to 88% on time.
- Mornings88% on time · p90 15 min · 188 flights · limited
- Middays82% on time · p90 25 min · 289 flights
- Afternoons81% on time · p90 25 min · 366 flights
- Evenings71% on time · p90 55 min · 333 flights
- Overnights61% on time · p90 70 min · 210 flights
Best day of week
On-time rates are fairly even by day on this route — ranging from 74% to 79% on time.
- Tuesdays79% on time · p90 30 min · 178 flights · limited
- Fridays78% on time · p90 25 min · 197 flights · limited
- Wednesdays78% on time · p90 25 min · 174 flights · limited
- Saturdays77% on time · p90 35 min · 195 flights · limited
- Mondays77% on time · p90 40 min · 192 flights · limited
- Sundays76% on time · p90 40 min · 259 flights
- Thursdays74% on time · p90 50 min · 191 flights · limited
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