Historical on-time performance
Hailey to Chicago
1,341 miData through May 2026Source: US DOT · BTS
Flights on SUN–ORD arrive on time 54% of the time over the last 12 months.
On-time rate54%arrived within 15 min
p90 delay130 min1 in 10 flights is worse (tail risk)
Cancelled3.9%of scheduled flights
based on 180 flights over the last 12 months. On-time means arriving within 15 minutes (BTS standard).
By airline
How each carrier compares
- SkyWest AirlinesOn-time54%Median5 minp90130 minCancel3.9%Flights180
Why flights run late
Delay causes
- Airline25%
- Weather25%
- Air traffic (NAS)26%
- Late aircraft23%
- Security0%
Most delay minutes here are attributed to Air traffic (NAS).
When flights don't go
Why flights were cancelled
- Airline0%
- Weather100%
- Air traffic (NAS)0%
- Security0%
Most cancellations here are attributed to Weather. Shares are among 7 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 SUN → ORD
All airlines · rolling 36 months (2023-06 .. 2026-05).
Best day of week
On-time rates are fairly even by day on this route — ranging from 64% to 66% on time.
- Saturdays66% on time · p90 105 min · 104 flights · limited
- Sundays64% on time · p90 95 min · 102 flights · limited
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