Historical on-time performance
Norfolk to Chicago
704 miData through Dec 2025Source: US DOT · BTS
Flights on ORF–MDW arrive on time 81% of the time over the last 12 months.
On-time rate81%arrived within 15 min
p90 delay35 min1 in 10 flights is worse (tail risk)
Cancelled0.9%of scheduled flights
based on 548 flights over the last 12 months. On-time means arriving within 15 minutes (BTS standard).
By airline
How each carrier compares
- Southwest AirlinesOn-time81%Medianon timep9035 minCancel0.9%Flights548
Why flights run late
Delay causes
- Airline25%
- Weather1%
- Air traffic (NAS)25%
- Late aircraft49%
- 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 ORF → MDW
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 54% to 91% on time.
- Mornings91% on time · p90 10 min · 839 flights
- Afternoons84% on time · p90 20 min · 91 flights · limited
- Middays78% on time · p90 55 min · 78 flights · limited
- Evenings68% on time · p90 45 min · 628 flights
- Overnights54% on time · p90 85 min · 114 flights · limited
Best day of week
On-time rates are fairly even by day on this route — ranging from 75% to 81% on time.
- Wednesdays81% on time · p90 30 min · 250 flights
- Thursdays81% on time · p90 25 min · 260 flights
- Fridays80% on time · p90 35 min · 262 flights
- Tuesdays80% on time · p90 35 min · 253 flights
- Mondays79% on time · p90 30 min · 263 flights
- Saturdays78% on time · p90 30 min · 185 flights · limited
- Sundays75% on time · p90 45 min · 277 flights
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