Historical on-time performance
Chicago to Charleston
760 miData through Dec 2025Source: US DOT · BTS
Flights on ORD–CHS arrive on time 78% of the time over the last 12 months.
On-time rate78%arrived within 15 min
p90 delay35 min1 in 10 flights is worse (tail risk)
Cancelled1.8%of scheduled flights
based on 1,640 flights over the last 12 months. On-time means arriving within 15 minutes (BTS standard).
By airline
How each carrier compares
- Republic AirwaysbestOn-time85%Medianon timep9020 minCancel2.9%Flights489
- Envoy AirOn-time75%Medianon timep9035 minCancel2.0%Flights553
- United AirlinesOn-time77%Medianon timep9045 minCancel0.7%Flights598
Why flights run late
Delay causes
- Airline24%
- Weather5%
- Air traffic (NAS)23%
- Late aircraft48%
- 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 ORD → 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 62% to 86% on time.
- Middays86% on time · p90 20 min · 1,238 flights
- Mornings85% on time · p90 20 min · 1,681 flights
- Evenings74% on time · p90 50 min · 988 flights
- Afternoons71% on time · p90 50 min · 287 flights
- Overnights62% on time · p90 70 min · 155 flights · limited
Best day of week
On-time rates are fairly even by day on this route — ranging from 76% to 83% on time.
- Tuesdays83% on time · p90 30 min · 556 flights
- Saturdays83% on time · p90 30 min · 639 flights
- Mondays83% on time · p90 25 min · 654 flights
- Fridays82% on time · p90 30 min · 644 flights
- Thursdays81% on time · p90 35 min · 636 flights
- Wednesdays79% on time · p90 40 min · 573 flights
- Sundays76% on time · p90 40 min · 649 flights
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