SUN to SFO flight delays
Sun Valley/Hailey/Ketchum, ID (SUN) San Francisco, CA (SFO) · 587 miles
292 flights · January 2025 – August 2026 · US Bureau of Transportation Statistics
64.04%
Arrived on time
Within 15 minutes of schedule
0%
Cancelled
Share of scheduled flights
73 min
When late, late by
Average across delayed arrivals
27 min
Delay per flight
Averaged over every flight flown
What the record says about this route
The season swings this route hard. In March it ran 89.3 points more punctual than in June — a difference bigger than the one between the best and worst airlines on most routes. If the date is flexible, it is worth more than the carrier.
The two directions do not behave alike. SFO to SUN arrives on time 20.1 points more often than the outbound. Delay accumulates through the flying day, so whichever direction is scheduled later tends to carry the worse record — which is an argument for booking the morning departure if the choice exists.
This route does worse than its own airport. SUN as a whole runs 22 points more punctual than these flights, which points at something specific to the route — the time of day it is scheduled, or the aircraft that feed it — rather than the airport.
This is a late route. Flights from Sun Valley/Hailey/Ketchum to San Francisco miss their scheduled arrival often enough that a tight connection at the far end is a connection at risk.
Which airline should you fly on this route?
Over January 2025 – August 2026, SkyWest Airlines arrived on time most often on SUN to SFO. Flights ran closest to schedule in March and worst in June.
Every airline on SUN to SFO
Ranked by how many flights each one operated. A carrier with fewer than 100 flights in the period is listed but not graded.
| Airline | Flights | On time | Cancelled | Avg delay | Grade |
|---|---|---|---|---|---|
| SkyWest Airlines | 292 | 64.04% | 0% | 73 min | D |
Month by month
Share of flights that arrived within 15 minutes of schedule, by month flown.
Other routes from Sun Valley/Hailey/Ketchum
Common questions
Are flights from Sun Valley/Hailey/Ketchum to San Francisco usually delayed?
64.04% of flights on the SUN to SFO route arrived within 15 minutes of schedule, so roughly 4 in every ten arrived late. That is worse than the average route in this record.
Which airlines fly from Sun Valley/Hailey/Ketchum to San Francisco?
Only SkyWest Airlines appears in the published record on this route, with 292 flights and 64.04% arriving on time.
How often are SUN to SFO flights cancelled?
0% of scheduled flights did not operate — about 1 in every thousand. That is in the normal range.
What is the best month to fly Sun Valley/Hailey/Ketchum to San Francisco?
March, when 92.5% of flights arrived on time. The worst was June at 3.2%.
When SUN to SFO flights are late, how late are they?
About 73 minutes on average across the flights that arrived more than 15 minutes behind schedule.
What these figures do and do not tell you
Everything on this page is counted from the flights that actually operated on SUN to SFO during January 2025 – August 2026, as reported by the airlines to the US Bureau of Transportation Statistics. "On time" is the federal definition: arriving at the gate within 15 minutes of the scheduled time.
A route's record is a description of the past, not a forecast. Weather, air traffic control and the aircraft's earlier flights that day drive most delays, and none of them are predictable from a historical rate. What the record does tell you is whether this route runs late more often than others, and which carrier on it has the better history — which is the part you can actually act on when you book.
Cancellations are counted separately from delays because they are a different problem for a traveller: a late flight still gets you there. How the grade is calculated →