Historical on-time performance
Johnstown to Chicago
487 miData through May 2026Source: US DOT · BTS
Flights on JST–ORD arrive on time 68% of the time over the last 12 months.
On-time rate68%arrived within 15 min
p90 delay140 min1 in 10 flights is worse (tail risk)
Cancelled4.0%of scheduled flights
based on 276 flights over the last 12 months. On-time means arriving within 15 minutes (BTS standard).
By airline
How each carrier compares
- SkyWest AirlinesOn-time68%Medianon timep90140 minCancel4.0%Flights276
Why flights run late
Delay causes
- Airline10%
- Weather6%
- Air traffic (NAS)26%
- Late aircraft58%
- Security0%
Most delay minutes here are attributed to Late aircraft.
When flights don't go
Why flights were cancelled
- Airline9%
- Weather82%
- Air traffic (NAS)9%
- Security0%
Most cancellations here are attributed to Weather. Shares are among 11 cancellations with a reported cause (BTS reports causes from June 2003).
Over time
On-time trend
By season
On-time rate by month
When to fly
Best time to fly JST → ORD
All airlines · rolling 36 months (2023-06 .. 2026-05).
Best day of week
On-time rates are fairly even by day on this route — ranging from 70% to 76% on time.
- Tuesdays76% on time · p90 105 min · 156 flights · limited
- Fridays76% on time · p90 90 min · 157 flights · limited
- Wednesdays74% on time · p90 90 min · 155 flights · limited
- Saturdays73% on time · p90 95 min · 157 flights · limited
- Mondays72% on time · p90 110 min · 155 flights · limited
- Sundays72% on time · p90 110 min · 156 flights · limited
- Thursdays70% on time · p90 135 min · 153 flights · limited
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