Historical on-time performance
Norfolk to Chicago
704 miData through May 2026Source: US DOT · BTS
Flights on ORF–MDW arrive on time 79% of the time over the last 12 months.
On-time rate79%arrived within 15 min
p90 delay35 min1 in 10 flights is worse (tail risk)
Cancelled1.3%of scheduled flights
based on 541 flights over the last 12 months. On-time means arriving within 15 minutes (BTS standard).
By airline
How each carrier compares
- Southwest AirlinesOn-time79%Medianon timep9035 minCancel1.3%Flights541
Why flights run late
Delay causes
- Airline18%
- Weather3%
- Air traffic (NAS)26%
- Late aircraft53%
- Security0%
Most delay minutes here are attributed to Late aircraft.
When flights don't go
Why flights were cancelled
- Airline14%
- Weather71%
- Air traffic (NAS)14%
- Security0%
Most cancellations here are attributed to Weather. Shares are among 7 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 ORF → MDW
All airlines · rolling 36 months (2023-06 .. 2026-05).
Best time of day
Mornings are the most reliable time of day to fly this route — 91% on time.
- Mornings91% on time · p90 5 min · 763 flights
- Evenings69% on time · p90 50 min · 636 flights
- Overnights56% on time · p90 85 min · 116 flights · limited
Best day of week
On-time rates are fairly even by day on this route — ranging from 75% to 82% on time.
- Mondays82% on time · p90 25 min · 249 flights
- Tuesdays81% on time · p90 30 min · 239 flights
- Fridays81% on time · p90 40 min · 252 flights
- Thursdays80% on time · p90 25 min · 249 flights
- Wednesdays79% on time · p90 35 min · 236 flights
- Sundays76% on time · p90 55 min · 270 flights
- Saturdays75% on time · p90 35 min · 182 flights · limited
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