ORD to SUN flight delays & on-time performance
Nonstop flights from Chicago O'Hare International Airport to Friedman Memorial Airport · 1,341 miles · Aug 2025 – Jul 2026
No FAA-reported ground stops or delays at ORD or SUN right now. Individual flights can still be delayed by the airline; check with your airline for your flight.
Key facts
- Flights from Chicago (ORD) to Sun Valley/Hailey/Ketchum (SUN) arrived on time 61% of the time in Aug 2025 – Jul 2026, worse than the 78% national average.
- 1.8% were cancelled, and 16% arrived an hour or more late.
- SkyWest Airlines is the only airline reporting nonstop flights on this route.
- Departures scheduled around 4pm did best (74% on time); around 9am did worst (53%).
- Thursday was the most reliable day to fly (74% on time) and Friday the least (50%).
- The largest source of delay minutes was airline (crew, maintenance, cleaning, fueling) (35%).
Which airline is most on time from ORD to SUN?
Ranked by on-time arrival rate. Regional airlines fly under their partner's brand (e.g. SkyWest for Delta Connection or United Express).
| Airline | On time | Cancelled | Avg delay | 1 hr+ late | Flights |
|---|---|---|---|---|---|
| SkyWest AirlinesRegional airline operating flights for United Express, Delta Connection, American Eagle and Alaska. | 61% | 1.8% | 31 min | 15.6% | 282 |
Best time of day to fly
On-time arrival rate by scheduled departure hour (local time).
- 8am64%91 flights
- 9am53%127 flights
- 4pm74%43 flights
- 7pm68%20 flights
Best day of the week
On-time arrival rate by day of departure.
- Monday59%2.8% cancelled
- Tuesday72%2.6% cancelled
- Wednesday68%2.9% cancelled
- Thursday74%0.0% cancelled
- Friday50%0.0% cancelled
- Saturday53%2.1% cancelled
- Sunday57%2.7% cancelled
On-time trend by month
Why flights are late
Share of delay minutes by cause, as reported by airlines to the DOT.
- Airline (crew, maintenance, cleaning, fueling)35%
- Extreme weather25%
- Air traffic control & airport congestion21%
- Late-arriving aircraft18%
- Security0%
Why flights are cancelled
Share of cancellations by reason.
- Extreme weather100%
- Airline (crew, maintenance, cleaning, fueling)0%
- Air traffic control & airport congestion0%
- Security0%
ORD to SUN: common questions
- How often are ORD to SUN flights on time?
- 61% of flights arrived less than 15 minutes late in Aug 2025 – Jul 2026, compared with 78% for all US flights.
- How often are flights from Chicago to Sun Valley/Hailey/Ketchum cancelled?
- 1.8% of scheduled flights were cancelled (5 of 282).
- How long are typical delays?
- Across all flights the average arrival delay was 31 min (early arrivals count as zero). Flights that were late arrived 77 min behind schedule on average, and 15.6% of flights were an hour or more late.
- How long is taxi time at ORD?
- Flights on this route spent 38 min taxiing from the gate to takeoff on average.
Related routes
Return trip: SUN to ORD — 60% on time
More flights from Chicago
More flights to Sun Valley/Hailey/Ketchum
Data: U.S. DOT Bureau of Transportation Statistics, Aug 2025 – Jul 2026 (12 months). Latest month published by BTS: July 2026. Route: ORD → SUN, nonstop flights by US airlines that report to the DOT. How we calculate this.