Historical on-time performance
Salt Lake City to Chicago
Flights on SLC–ORD arrive on time 74% of the time over the last 12 months.
based on 3,078 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.
- SkyWest AirlinesOn-time91%Medianon timep9010 minCancel0.0%Flights66
- Delta Air LinesOn-time75%Medianon timep9050 minCancel0.6%Flights1,010
- United AirlinesOn-time75%Medianon timep9050 minCancel0.9%Flights1,068
- American AirlinesOn-time72%Medianon timep9065 minCancel1.6%Flights934
Why flights run late
Delay causes
- Airline35%
- Weather6%
- Air traffic (NAS)34%
- Late aircraft25%
- Security0%
Most delay minutes here are attributed to Airline.
When flights don't go
Why flights were cancelled
- Airline35%
- Weather52%
- Air traffic (NAS)13%
- Security0%
Most cancellations here are attributed to Weather. Shares are among 31 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 SLC → ORD
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 — 86% on time.
- Mornings86% on time · p90 20 min · 3,310 flights
- Middays76% on time · p90 55 min · 2,851 flights
- Evenings74% on time · p90 65 min · 1,195 flights
- Overnights71% on time · p90 50 min · 191 flights · limited
- Afternoons69% on time · p90 55 min · 1,493 flights
Best day of week
On-time rates are fairly even by day on this route — ranging from 77% to 81% on time.
- Tuesdays81% on time · p90 35 min · 1,257 flights
- Saturdays80% on time · p90 40 min · 1,180 flights
- Thursdays78% on time · p90 45 min · 1,315 flights
- Wednesdays78% on time · p90 45 min · 1,269 flights
- Mondays78% on time · p90 50 min · 1,352 flights
- Fridays77% on time · p90 45 min · 1,353 flights
- Sundays77% on time · p90 50 min · 1,314 flights
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