SUN to DEN flight delays & on-time performance
Nonstop flights from Friedman Memorial Airport to Denver International Airport · 557 miles · Aug 2025 – Jul 2026
No FAA-reported ground stops or delays at SUN or DEN right now. Individual flights can still be delayed by the airline; check with your airline for your flight.
Key facts
- Flights from Sun Valley/Hailey/Ketchum (SUN) to Denver (DEN) arrived on time 85% of the time in Aug 2025 – Jul 2026, better than the 78% national average.
- 0% were cancelled, and 9% arrived an hour or more late.
- SkyWest Airlines is the only airline reporting nonstop flights on this route.
- Departures scheduled around 7am did best (93% on time); around 2pm did worst (79%).
- Saturday was the most reliable day to fly (90% on time) and Thursday the least (81%).
- The largest source of delay minutes was airline (crew, maintenance, cleaning, fueling) (40%).
Which airline is most on time from SUN to DEN?
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. | 85% | 0.0% | 18 min | 8.9% | 630 |
Best time of day to fly
On-time arrival rate by scheduled departure hour (local time).
- 7am93%265 flights
- 2pm79%360 flights
Best day of the week
On-time arrival rate by day of departure.
- Monday84%0.0% cancelled
- Tuesday85%0.0% cancelled
- Wednesday85%0.0% cancelled
- Thursday81%0.0% cancelled
- Friday84%0.0% cancelled
- Saturday90%0.0% cancelled
- Sunday85%0.0% 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)40%
- Air traffic control & airport congestion24%
- Late-arriving aircraft21%
- Extreme weather15%
- Security0%
Why flights are cancelled
Share of cancellations by reason.
No cancellation causes recorded in this period.
SUN to DEN: common questions
- How often are SUN to DEN flights on time?
- 85% 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 Sun Valley/Hailey/Ketchum to Denver cancelled?
- 0.0% of scheduled flights were cancelled (0 of 630).
- How long are typical delays?
- Across all flights the average arrival delay was 18 min (early arrivals count as zero). Flights that were late arrived 117 min behind schedule on average, and 8.9% of flights were an hour or more late.
- How long is taxi time at SUN?
- Flights on this route spent 22 min taxiing from the gate to takeoff on average.
Related routes
Return trip: DEN to SUN — 81% on time
More flights from 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: SUN → DEN, nonstop flights by US airlines that report to the DOT. How we calculate this.