SUN to SFO flight delays & on-time performance
Nonstop flights from Friedman Memorial Airport to San Francisco International Airport · 587 miles · Aug 2025 – Jul 2026
No FAA-reported ground stops or delays at SUN or SFO 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 San Francisco (SFO) arrived on time 63% of the time in Aug 2025 – Jul 2026, worse than the 78% national average.
- 0% were cancelled, and 18% arrived an hour or more late.
- SkyWest Airlines is the only airline reporting nonstop flights on this route.
- Departures scheduled around 4pm did best (93% on time); around 7am did worst (28%).
- Saturday was the most reliable day to fly (71% on time) and Sunday the least (52%).
- The largest source of delay minutes was air traffic control & airport congestion (72%).
Which airline is most on time from SUN to SFO?
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. | 63% | 0.0% | 29 min | 17.8% | 293 |
Best time of day to fly
On-time arrival rate by scheduled departure hour (local time).
- 7am28%33 flights
- 8am41%99 flights
- 10am85%40 flights
- 2pm54%26 flights
- 3pm91%32 flights
- 4pm93%58 flights
Best day of the week
On-time arrival rate by day of departure.
- Monday58%0.0% cancelled
- Tuesday67%0.0% cancelled
- Wednesday71%0.0% cancelled
- Thursday55%0.0% cancelled
- Friday64%0.0% cancelled
- Saturday71%0.0% cancelled
- Sunday52%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.
- Air traffic control & airport congestion72%
- Airline (crew, maintenance, cleaning, fueling)22%
- Late-arriving aircraft6%
- Extreme weather1%
- Security0%
Why flights are cancelled
Share of cancellations by reason.
No cancellation causes recorded in this period.
SUN to SFO: common questions
- How often are SUN to SFO flights on time?
- 63% 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 San Francisco cancelled?
- 0.0% of scheduled flights were cancelled (0 of 293).
- How long are typical delays?
- Across all flights the average arrival delay was 29 min (early arrivals count as zero). Flights that were late arrived 76 min behind schedule on average, and 17.8% of flights were an hour or more late.
- How long is taxi time at SUN?
- Flights on this route spent 25 min taxiing from the gate to takeoff on average.
Related routes
Return trip: SFO to SUN — 83% 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 → SFO, nonstop flights by US airlines that report to the DOT. How we calculate this.