Historical on-time performance
Rochester to Chicago
523 miData through Dec 2025Source: US DOT · BTS
Flights on ROC–MDW arrive on time 89% of the time over the last 12 months.
On-time rate89%arrived within 15 min
p90 delay15 min1 in 10 flights is worse (tail risk)
Cancelled0.8%of scheduled flights
based on 123 flights over the last 12 months. On-time means arriving within 15 minutes (BTS standard).
By airline
How each carrier compares
- Southwest AirlinesOn-time89%Medianon timep9015 minCancel0.8%Flights123
Why flights run late
Delay causes
- Airline28%
- Weather0%
- Air traffic (NAS)29%
- Late aircraft42%
- 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 ROC → MDW
All airlines · rolling 36 months (2023-01 .. 2025-12).
Best time of day
Mornings are the most reliable time of day to fly this route — 92% on time.
- Mornings92% on time · p90 10 min · 528 flights
- Evenings75% on time · p90 40 min · 397 flights
- Afternoons72% on time · p90 35 min · 105 flights · limited
- Overnights63% on time · p90 65 min · 96 flights · limited
Best day of week
On-time rates are fairly even by day on this route — ranging from 77% to 87% on time.
- Tuesdays87% on time · p90 15 min · 175 flights · limited
- Mondays85% on time · p90 20 min · 182 flights · limited
- Saturdays81% on time · p90 40 min · 123 flights · limited
- Thursdays81% on time · p90 35 min · 181 flights · limited
- Wednesdays81% on time · p90 35 min · 175 flights · limited
- Fridays78% on time · p90 40 min · 181 flights · limited
- Sundays77% on time · p90 35 min · 147 flights · limited
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