SUN to SEA flight delays & on-time performance
Nonstop flights from Friedman Memorial Airport to Seattle–Tacoma International Airport · 475 miles · Aug 2025 – Jul 2026
No FAA-reported ground stops or delays at SUN or SEA right now. Individual flights can still be delayed by the airline; check with your airline for your flight.
Key facts
- Flights from Sun Valley/Hailey/Ketchum (SUN) to Seattle (SEA) arrived on time 89% of the time in Aug 2025 – Jul 2026, better than the 78% national average.
- 2.6% were cancelled, and 5% arrived an hour or more late.
- SkyWest Airlines is the only airline reporting nonstop flights on this route.
- Saturday was the most reliable day to fly (90% on time) and Sunday the least (90%).
- The largest source of delay minutes was extreme weather (85%).
Which airline is most on time from SUN to SEA?
Ranked by on-time arrival rate. Regional airlines fly under their partner's brand (e.g. SkyWest for Delta Connection or United Express).
| Airline | On time | Cancelled | Avg delay | 1 hr+ late | Flights |
|---|---|---|---|---|---|
| SkyWest AirlinesRegional airline operating flights for United Express, Delta Connection, American Eagle and Alaska. | 89% | 2.6% | 11 min | 5.4% | 38 |
Best time of day to fly
On-time arrival rate by scheduled departure hour (local time).
- 1pm89%28 flights
- 2pm89%10 flights
Best day of the week
On-time arrival rate by day of departure.
- Monday100%0.0% cancelled
- Tuesday100%0.0% cancelled
- Wednesday50%0.0% cancelled
- Thursday100%0.0% cancelled
- Friday88%11.1% cancelled
- Saturday90%0.0% cancelled
- Sunday90%0.0% cancelled
On-time trend by month
Why flights are late
Share of delay minutes by cause, as reported by airlines to the DOT.
- Extreme weather85%
- Airline (crew, maintenance, cleaning, fueling)10%
- Air traffic control & airport congestion5%
- Late-arriving aircraft0%
- Security0%
Why flights are cancelled
Share of cancellations by reason.
- Extreme weather100%
- Airline (crew, maintenance, cleaning, fueling)0%
- Air traffic control & airport congestion0%
- Security0%
SUN to SEA: common questions
- How often are SUN to SEA flights on time?
- 89% of flights arrived less than 15 minutes late in Aug 2025 – Jul 2026, compared with 78% for all US flights.
- How often are flights from Sun Valley/Hailey/Ketchum to Seattle cancelled?
- 2.6% of scheduled flights were cancelled (1 of 38).
- How long are typical delays?
- Across all flights the average arrival delay was 11 min (early arrivals count as zero). Flights that were late arrived 91 min behind schedule on average, and 5.4% of flights were an hour or more late.
- How long is taxi time at SUN?
- Flights on this route spent 20 min taxiing from the gate to takeoff on average.
Related routes
Return trip: SEA to SUN — 87% on time
More flights from Sun Valley/Hailey/Ketchum
Data: U.S. DOT Bureau of Transportation Statistics, Aug 2025 – Jul 2026 (12 months). Latest month published by BTS: July 2026. Route: SUN → SEA, nonstop flights by US airlines that report to the DOT. How we calculate this.