Historical on-time performance
Chicago to Duluth
397 miData through Dec 2025Source: US DOT · BTS
Flights on ORD–DLH arrive on time 66% of the time over the last 12 months.
On-time rate66%arrived within 15 min
p90 delay80 min1 in 10 flights is worse (tail risk)
Cancelled1.8%of scheduled flights
based on 1,083 flights over the last 12 months. On-time means arriving within 15 minutes (BTS standard).
By airline
How each carrier compares
- SkyWest AirlinesOn-time66%Medianon timep9080 minCancel1.8%Flights1,083
Why flights run late
Delay causes
- Airline38%
- Weather7%
- Air traffic (NAS)20%
- Late aircraft35%
- Security0%
Most delay minutes here are attributed to Airline.
Over time
On-time trend
By season
On-time rate by month
When to fly
Best time to fly ORD → DLH
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 64% to 78% on time.
- Middays78% on time · p90 40 min · 936 flights
- Mornings74% on time · p90 40 min · 710 flights
- Overnights69% on time · p90 75 min · 590 flights
- Evenings65% on time · p90 85 min · 469 flights
- Afternoons64% on time · p90 80 min · 198 flights · limited
Best day of week
On-time rates are fairly even by day on this route — ranging from 67% to 76% on time.
- Tuesdays76% on time · p90 40 min · 414 flights
- Thursdays76% on time · p90 40 min · 425 flights
- Wednesdays74% on time · p90 60 min · 419 flights
- Mondays73% on time · p90 65 min · 430 flights
- Saturdays69% on time · p90 55 min · 377 flights
- Sundays69% on time · p90 80 min · 411 flights
- Fridays67% on time · p90 60 min · 427 flights
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