Airport reliability
Sun Valley/Hailey/Ketchum (SUN) on-time performance
How reliably flights leave Sun Valley/Hailey/Ketchum, ID (SUN) and reach their destinations, by airline, departure hour and month, September 2025 to August 2026.
Sun Valley/Hailey/Ketchum, ID2,753 departures in 12 months
- Departures on time
- 82.1% U.S. average 75.6%
- Cancelled
- 1.2% U.S. average 1.9%
- 60+ minutes late
- 8.4% U.S. average 8.1%
- Scheduled departures
- 2,753 12 months
What this means
SUN departures beat the U.S. average.
- 82.1% of the 2,753 scheduled departures from Sun Valley/Hailey/Ketchum (SUN) arrived at their destination on time, 6.5 points higher than the U.S. average of 75.6%.
- 1.2% of departures were cancelled (U.S. average 1.9%), and 8.4% arrived an hour or more late.
- Flights arriving at SUN were on time 82.9% of the time.
- Over the last 3 years, November was the most reliable month for departures from SUN (96.6% on time) and February the least reliable (78.1%).
- Cancellations peaked in January, when 2.3% of flights were cancelled.
- Flights scheduled to depart 3 pm to 4 pm were the most punctual (92.0% on time); flights scheduled to depart 8 am to 9 am were the least (58.8%).
Airlines at SUN
Ranked by on-time arrival
| Airline | On time | Cancelled | 60+ min late | Avg delay when late | Departures |
|---|---|---|---|---|---|
| SkyWest AirlinesSold as United Express, Delta Connection, American Eagle, Alaska | 82.1% | 1.2% | 8.4% | 100 min | 2,753 |
Tap a heading to sort.
On-time rate by departure hour
Share of scheduled flights on time SUN average 82.1%
Show as table
| Period | On time | Flights |
|---|---|---|
| Departing 6 am to 7 am | Insufficient sample | 1 |
| Departing 7 am to 8 am | 89.6% | 762 |
| Departing 8 am to 9 am | 58.8% | 260 |
| Departing 10 am to 11 am | Insufficient sample | 28 |
| Departing 11 am to noon | Insufficient sample | 8 |
| Departing noon to 1 pm | 79.5% | 356 |
| Departing 1 pm to 2 pm | 78.6% | 416 |
| Departing 2 pm to 3 pm | 77.7% | 417 |
| Departing 3 pm to 4 pm | 92.0% | 387 |
| Departing 4 pm to 5 pm | 91.2% | 91 |
| Departing 5 pm to 6 pm | Insufficient sample | 8 |
| Departing 6 pm to 7 pm | Insufficient sample | 19 |
Best and worst months at SUN
Share of scheduled flights on time 12-month average 82.1%
Show as table
| Period | On time | Flights |
|---|---|---|
| January | 80.7% | 872 |
| February | 78.1% | 778 |
| March | 83.0% | 857 |
| April | 89.4% | 378 |
| May | 87.6% | 387 |
| June | 83.6% | 560 |
| July | 80.7% | 721 |
| August | 82.2% | 701 |
| September | 91.1% | 436 |
| October | 93.6% | 388 |
| November | 96.6% | 294 |
| December | 79.3% | 642 |
Month by month, last 12 months
Share of scheduled flights on time U.S. average 75.6%
Show as table
| Period | On time | Flights |
|---|---|---|
| Sep 2025 | 90.2% | 183 |
| Oct 2025 | 90.0% | 170 |
| Nov 2025 | 96.6% | 116 |
| Dec 2025 | 76.6% | 265 |
| Jan 2026 | 80.7% | 331 |
| Feb 2026 | 79.1% | 306 |
| Mar 2026 | 85.2% | 345 |
| Apr 2026 | 85.4% | 157 |
| May 2026 | 88.1% | 135 |
| Jun 2026 | 76.3% | 215 |
| Jul 2026 | 76.2% | 273 |
| Aug 2026 | 77.0% | 257 |
Busiest routes from SUN
| To | On time | Cancelled | Airlines | Flights |
|---|---|---|---|---|
| Salt Lake City (SLC) | 92.9% | 0.7% | 1 | 1,078 |
| Denver (DEN) | 84.4% | 0.2% | 1 | 630 |
| Los Angeles (LAX) | 89.0% | 0.3% | 1 | 326 |
| Chicago (ORD) | 56.3% | 4.8% | 1 | 293 |
| San Francisco (SFO) | 57.7% | 0.0% | 1 | 291 |
| Phoenix (PHX) | 71.1% | 8.2% | 1 | 97 |
Sources & data dates
- Source
- U.S. DOT Bureau of Transportation Statistics, Reporting Carrier On-Time Performance (1987-present)
- Period
- September 2025 to August 2026 (12 months); month-of-year patterns September 2023 to August 2026
- Data through
- August 2026
- Processed
- 2026-11-03
- Scope
- Scheduled nonstop domestic departures from Sun Valley/Hailey/Ketchum, ID (SUN) by airlines that report to the DOT.
- Method
- Rates use all scheduled flights as the denominator; cancelled and diverted flights count as not on time. Figures based on fewer than 50 scheduled flights are suppressed. Full methodology.