SUN to SEA flight delays
Sun Valley/Hailey/Ketchum, ID (SUN) Seattle, WA (SEA) · 475 miles
38 flights · January 2025 – August 2026 · the publishing regulator
This route flew fewer than 50 times in the period, which is too few for an on-time rate to mean anything. The figures below are shown as recorded, but the route is not graded.
89.19%
Arrived on time
Within 15 minutes of schedule
2.63%
Cancelled
Share of scheduled flights
91 min
When late, late by
Average across delayed arrivals
11 min
Delay per flight
Averaged over every flight flown
What the record says about this route
Cancellation, not delay, is the risk worth pricing here: 2.63% of scheduled flights never operated. A late flight still gets you there. A cancelled one leaves you rebooking, and on a route with few daily departures that can mean losing a day.
The shape of the lateness matters here. Flights on this route are not late often, but when they are late they are late by about 91 minutes — long enough to lose a connection or an evening. The on-time percentage looks reassuring and understates the consequence of being on the wrong flight.
Flights from Sun Valley/Hailey/Ketchum to Seattle are among the most dependable in the record. A route this punctual is usually a short hop between airports with slots to spare.
Every airline on SUN to SEA
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 | 38 | 89.19% | 2.63% | 91 min | — |
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 Seattle usually delayed?
89.19% of flights on the SUN to SEA route arrived within 15 minutes of schedule, so roughly 1 in every ten arrived late. That is better than the average route in this record.
How often are SUN to SEA flights cancelled?
2.63% of scheduled flights did not operate — about 26 in every thousand. That is high enough that cancellation, not delay, is the risk worth planning around.
When SUN to SEA flights are late, how late are they?
About 91 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 SEA 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 →