Historical on-time performance
Phoenix to Chicago
Flights on PHX–ORD arrive on time 75% of the time over the last 12 months.
based on 5,403 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.
- American AirlinesOn-time77%Medianon timep9040 minCancel2.1%Flights2,994
- United AirlinesOn-time77%Medianon timep9040 minCancel0.5%Flights1,943
- Southwest AirlinesOn-time58%Median5 minp9090 minCancel1.2%Flights427
- Frontier AirlinesOn-time51%Median5 minp90190 minCancel5.1%Flights39
Why flights run late
Delay causes
- Airline30%
- Weather2%
- Air traffic (NAS)35%
- Late aircraft33%
- Security0%
Most delay minutes here are attributed to Air traffic (NAS).
When flights don't go
Why flights were cancelled
- Airline6%
- Weather81%
- Air traffic (NAS)13%
- Security0%
Most cancellations here are attributed to Weather. Shares are among 80 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 PHX → ORD
All airlines · rolling 36 months (2023-06 .. 2026-05).
Best time of day
On-time rates are fairly even by time of day on this route — ranging from 71% to 88% on time.
- Mornings88% on time · p90 15 min · 5,026 flights
- Early mornings85% on time · p90 25 min · 596 flights
- Overnights81% on time · p90 35 min · 1,465 flights
- Middays77% on time · p90 40 min · 4,854 flights
- Evenings74% on time · p90 60 min · 2,526 flights
- Afternoons71% on time · p90 55 min · 2,990 flights
Best day of week
On-time rates are fairly even by day on this route — ranging from 78% to 82% on time.
- Saturdays82% on time · p90 30 min · 2,475 flights
- Wednesdays81% on time · p90 30 min · 2,390 flights
- Tuesdays80% on time · p90 35 min · 2,383 flights
- Thursdays79% on time · p90 40 min · 2,530 flights
- Sundays78% on time · p90 40 min · 2,551 flights
- Fridays78% on time · p90 45 min · 2,569 flights
- Mondays78% on time · p90 40 min · 2,559 flights
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