Chicago (ORD) to Sun Valley/Hailey/Ketchum (SUN): On-Time Performance
Data through July 2026
Chicago (ORD) to Sun Valley/Hailey/Ketchum (SUN) is a thinner route than most in this dataset — 282 departures over the past year, roughly 5 a week — so treat these numbers as indicative rather than definitive. Of the flights that did operate, 64% arrived on time, noticeably below the national average of 78%.
- On-time
- 64%
- arrived <15 min late
- Avg delay
- 27 min
- completed flights
- Cancelled
- 1.2%
- Flights/day
- 0.77
- last 12 months
- Duration
- 4h 6m
- scheduled
- Distance
- 1,341 mi
Monthly on-time trend
Best time to fly from ORD to SUN
Aim for departures around 4 p.m. (74% on-time); avoid 9 a.m. departures (55%).
By day of week
| Day | On-time | Avg delay |
|---|---|---|
| Monday | 65% | 28 min |
| Tuesday | 72% | 21 min |
| Wednesdaybest | 75% | 21 min |
| Thursday | 60% | 23 min |
| Friday | 53% | 38 min |
| Saturday | 63% | 26 min |
| Sunday | 61% | 29 min |
What causes delays on this route
Share of total delay minutes by cause, as reported by carriers to the US DOT.
- Late-arriving aircraft22%
- Airline operations37%
- National airspace system20%
- Weather21%
Frequently asked questions
- How often are flights from ORD to SUN delayed?
- 37% of ORD–SUN flights arrived 15 or more minutes late (the US DOT definition of a delay) between 2024-07 and 2026-07. The average arrival delay across completed flights was 27 minutes.
- What is the best time of day to fly from ORD to SUN?
- Departures around 4 p.m. have the best record (74% on-time), while departures around 9 a.m. have the worst (55%). As on most US routes, delays accumulate through the day, so earlier flights are generally safer.
- How long is the flight from ORD to SUN?
- The scheduled ORD–SUN flight time averages 4h 6m over 1,341 miles. Actual arrival times vary — flights on this route land 15+ minutes late 37% of the time.
- How often are ORD to SUN flights cancelled?
- 1.2% of scheduled flights on this route were cancelled between 2024-07 and 2026-07, at or below the national rate of 1.6%.
- What day of the week is most reliable for ORD to SUN?
- Wednesday flights have the best record at 75% on-time. Day-of-week differences on this route are meaningful — Friday trails at 53%.
Explore related pages
More routes from ORD
Other ways to fly to Sun Valley/Hailey/Ketchum (SUN)
Related guides
Based on 422 flights, 2024-07–2026-07. Source: US DOT Bureau of Transportation Statistics. Updated 2026-09-28.