Friedman Memorial Airport (SUN): Delays & On-Time Performance
Data through July 2026
Friedman Memorial Airport (SUN) is a tale of two seasons: departures ran 97% on-time in November 2025 but sank to 79% in December 2025. Across the year it averages 87% against a national 78%, over roughly 8 departures a day to 7 destinations.
- Departures on-time
- 87%
- left <15 min late
- Avg dep delay
- 16 min
- Arrivals on-time
- 85%
- Cancelled
- 1.0%
- Destinations
- 7
- nonstop
- Airlines
- 1
Plan your departure from SUN
The choices most likely to improve your odds, based on this airport’s historical record.
- Best departure time
- Around 7 a.m.
- 94% on-time
- Best day to fly
- Tuesday
- 88% on-time
- Cancellation risk
- 1.0%
- below the US average
Monthly on-time trend
Best time of day to depart from SUN
By day of week
| Day | On-time | Avg delay |
|---|---|---|
| Monday | 87% | 15 min |
| Tuesdaybest | 88% | 13 min |
| Wednesday | 86% | 18 min |
| Thursday | 83% | 18 min |
| Friday | 83% | 21 min |
| Saturday | 85% | 15 min |
| Sunday | 82% | 19 min |
Busiest routes from SUN
| Route | Flights/12mo | On-time | Avg delay |
|---|---|---|---|
| SUN → SLC (Salt Lake City) | 1,078 | 94% | 9 min |
| SUN → DEN (Denver) | 630 | 84% | 18 min |
| SUN → LAX (Los Angeles) | 328 | 89% | 12 min |
| SUN → SFO (San Francisco) | 293 | 63% | 30 min |
| SUN → ORD (Chicago) | 281 | 65% | 38 min |
Where flights into SUN come from
| Route | Flights/12mo | On-time | Avg delay |
|---|---|---|---|
| SLC (Salt Lake City) → SUN | 1,078 | 93% | 4 min |
| DEN (Denver) → SUN | 630 | 81% | 16 min |
| LAX (Los Angeles) → SUN | 328 | 87% | 9 min |
| SFO (San Francisco) → SUN | 293 | 84% | 11 min |
| ORD (Chicago) → SUN | 282 | 64% | 27 min |
What causes delays at SUN
Share of total delay minutes by cause, as reported by carriers to the US DOT, weighted across routes departing SUN.
- Late-arriving aircraft11%
- Airline operations48%
- National airspace system22%
- Weather19%
Alternative airports near Sun Valley/Hailey/Ketchum
Other airports within 120 miles, compared on departure reliability.
| Airport | Distance | On-time departures | Avg delay |
|---|---|---|---|
| TWF — Joslin Field Magic Valley Regional Airport | 71 mi | 95% | 6 min |
| BOI — Boise Air Terminal/Gowen Field | 97 mi | 85% | 11 min |
| IDA — Idaho Falls Regional Airport | 111 mi | 83% | 20 min |
Compare the airport-level record first, then check the exact route you plan to book.
Frequently asked questions
- How often are flights delayed at SUN?
- 13% of departures from Friedman Memorial Airport left 15+ minutes late between 2024-07 and 2026-07, with an average departure delay of 16 minutes. The national on-time average over the same period was 78%.
- What is the best time of day to depart from SUN?
- Flights scheduled around 7 a.m. depart on time 94% of the time at SUN, versus 75% around 8 a.m.. Booking before noon is the usual rule of thumb here.
- What is the worst month for delays at SUN?
- In this dataset, December 2025 was the weakest month at SUN, with 79% of departures on time.
- How often are flights cancelled at SUN?
- 1% of scheduled departures from SUN were cancelled in this period, compared with a national rate of 1.6%.
Popular route pages from this airport
Related guides
Based on 5,195 flights, 2024-07–2026-07. Source: US DOT Bureau of Transportation Statistics. Updated 2026-09-28.