Sun Valley/Hailey/Ketchum (SUN) to San Francisco (SFO): On-Time Performance
Data through May 2026
Sun Valley/Hailey/Ketchum (SUN) to San Francisco (SFO) is a thinner route than most in this dataset — 276 departures over the past year, roughly 5 a week — so treat these numbers as indicative rather than definitive. Of the flights that did operate, 69% arrived on time, noticeably below the national average of 78%.
- On-time
- 69%
- arrived <15 min late
- Avg delay
- 26 min
- completed flights
- Cancelled
- 0.6%
- Flights/day
- 0.76
- last 12 months
- Duration
- 2h 20m
- scheduled
- Distance
- 587 mi
Monthly on-time trend
Best time to fly from SUN to SFO
Aim for departures around 4 p.m. (93% on-time); avoid 8 a.m. departures (55%).
By day of week
| Day | On-time | Avg delay |
|---|---|---|
| Monday | 68% | 18 min |
| Tuesdaybest | 79% | 23 min |
| Wednesday | 75% | 18 min |
| Thursday | 65% | 34 min |
| Friday | 68% | 30 min |
| Saturday | 74% | 21 min |
| Sunday | 60% | 33 min |
What causes delays on this route
Share of total delay minutes by cause, as reported by carriers to the US DOT.
- Late-arriving aircraft9%
- Airline operations40%
- National airspace system49%
- Weather2%
Frequently asked questions
- How often are flights from SUN to SFO delayed?
- 31% of SUN–SFO flights arrived 15 or more minutes late (the US DOT definition of a delay) between 2024-06 and 2026-05. The average arrival delay across completed flights was 26 minutes.
- What is the best time of day to fly from SUN to SFO?
- Departures around 4 p.m. have the best record (93% on-time), while departures around 8 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 SUN to SFO?
- The scheduled SUN–SFO flight time averages 2h 20m over 587 miles. Actual arrival times vary — flights on this route land 15+ minutes late 31% of the time.
- How often are SUN to SFO flights cancelled?
- 0.6% of scheduled flights on this route were cancelled between 2024-06 and 2026-05, at or below the national rate of 1.6%.
- What is the worst month to fly from SUN to SFO?
- July 2025 was the roughest month in this dataset, with only 38% of arrivals on time. The best was March 2026 at 93%. If your dates are flexible, that 54-point gap is worth planning around.
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Based on 522 flights, 2024-06–2026-05. Source: US DOT Bureau of Transportation Statistics. Updated 2026-07-01.