Historical on-time performance
Chicago to Tucson
1,437 miData through Dec 2025Source: US DOT · BTS
Flights on ORD–TUS arrive on time 74% of the time over the last 12 months.
On-time rate74%arrived within 15 min
p90 delay60 min1 in 10 flights is worse (tail risk)
Cancelled1.1%of scheduled flights
based on 921 flights over the last 12 months. On-time means arriving within 15 minutes (BTS standard).
By airline
How each carrier compares
Too close to call — no single carrier is clearly more on-time here.
- United AirlinesOn-time83%Medianon timep9025 minCancel0.0%Flights77
- American AirlinesOn-time70%Medianon timep9075 minCancel1.3%Flights538
- SkyWest AirlinesOn-time77%Medianon timep9040 minCancel1.0%Flights306
Why flights run late
Delay causes
- Airline38%
- Weather6%
- Air traffic (NAS)17%
- Late aircraft39%
- 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 ORD → TUS
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 — 83% on time.
- Mornings83% on time · p90 30 min · 1,608 flights
- Middays75% on time · p90 50 min · 363 flights
- Evenings71% on time · p90 40 min · 347 flights
- Overnights62% on time · p90 80 min · 555 flights
Best day of week
On-time rates are fairly even by day on this route — ranging from 73% to 80% on time.
- Tuesdays80% on time · p90 40 min · 374 flights
- Sundays78% on time · p90 35 min · 432 flights
- Wednesdays78% on time · p90 45 min · 396 flights
- Fridays76% on time · p90 40 min · 430 flights
- Mondays75% on time · p90 55 min · 410 flights
- Saturdays75% on time · p90 50 min · 407 flights
- Thursdays73% on time · p90 40 min · 424 flights
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