Historical on-time performance
Chicago to Valparaiso
796 miData through May 2026Source: US DOT · BTS
Flights on ORD–VPS arrive on time 73% of the time over the last 12 months.
On-time rate73%arrived within 15 min
p90 delay50 min1 in 10 flights is worse (tail risk)
Cancelled1.7%of scheduled flights
based on 288 flights over the last 12 months. On-time means arriving within 15 minutes (BTS standard).
By airline
How each carrier compares
Not enough comparable data to name a most-on-time carrier — low-data carriers aren't ranked.
- Envoy AirOn-time76%Medianon timep9040 minCancel1.1%Flights183
- American AirlinesOn-time67%Medianon timep9075 minCancel2.9%Flights105
Why flights run late
Delay causes
- Airline12%
- Weather12%
- Air traffic (NAS)27%
- Late aircraft48%
- Security0%
Most delay minutes here are attributed to Late aircraft.
When flights don't go
Why flights were cancelled
- Airline0%
- Weather100%
- Air traffic (NAS)0%
- Security0%
Most cancellations here are attributed to Weather. Shares are among 5 cancellations with a reported cause (BTS reports causes from June 2003).
Over time
On-time trend
By season
On-time rate by month
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