Historical on-time performance
Chicago to State College Pennsylvania
528 miData through Dec 2025Source: US DOT · BTS
Flights on ORD–SCE arrive on time 77% of the time over the last 12 months.
On-time rate77%arrived within 15 min
p90 delay50 min1 in 10 flights is worse (tail risk)
Cancelled0.9%of scheduled flights
based on 351 flights over the last 12 months. On-time means arriving within 15 minutes (BTS standard).
By airline
How each carrier compares
- SkyWest AirlinesOn-time77%Medianon timep9050 minCancel0.9%Flights351
Why flights run late
Delay causes
- Airline37%
- Weather12%
- Air traffic (NAS)25%
- Late aircraft26%
- Security0%
Most delay minutes here are attributed to Airline.
Over time
On-time trend
By season
On-time rate by month
When to fly
Best time to fly ORD → SCE
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 69% to 79% on time.
- Afternoons79% on time · p90 35 min · 600 flights
- Mornings77% on time · p90 35 min · 580 flights
- Middays76% on time · p90 60 min · 252 flights
- Evenings69% on time · p90 50 min · 542 flights
Best day of week
On-time rates are fairly even by day on this route — ranging from 72% to 79% on time.
- Mondays79% on time · p90 35 min · 290 flights
- Tuesdays77% on time · p90 50 min · 266 flights
- Saturdays76% on time · p90 50 min · 300 flights
- Wednesdays76% on time · p90 50 min · 263 flights
- Thursdays74% on time · p90 35 min · 286 flights
- Fridays73% on time · p90 40 min · 304 flights
- Sundays72% on time · p90 60 min · 300 flights
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