SFO to BOI flight delays & on-time performance
Nonstop flights from San Francisco International Airport to Boise Air Terminal/Gowen Field · 522 miles · Aug 2025 – Jul 2026
No FAA-reported ground stops or delays at SFO or BOI right now. Individual flights can still be delayed by the airline; check with your airline for your flight.
Key facts
- Flights from San Francisco (SFO) to Boise (BOI) arrived on time 76% of the time in Aug 2025 – Jul 2026, worse than the 78% national average.
- 0.3% were cancelled, and 8% arrived an hour or more late.
- United Airlines was the most punctual airline here (78% on time); SkyWest Airlines was the least (76%).
- Departures scheduled around 8am did best (93% on time); around 8pm did worst (63%).
- Tuesday was the most reliable day to fly (83% on time) and Monday the least (66%).
- The largest source of delay minutes was late-arriving aircraft (42%).
Which airline is most on time from SFO to BOI?
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 |
|---|---|---|---|---|---|
| United Airlines | 78% | 0.4% | 13 min | 3.9% | 230 |
| SkyWest AirlinesRegional airline operating flights for United Express, Delta Connection, American Eagle and Alaska. | 76% | 0.3% | 19 min | 9.2% | 1,483 |
Best time of day to fly
On-time arrival rate by scheduled departure hour (local time).
- 8am93%162 flights
- 10am64%89 flights
- 11am86%86 flights
- 12pm57%50 flights
- 1pm72%291 flights
- 2pm85%68 flights
- 4pm73%227 flights
- 6pm78%238 flights
- 7pm77%213 flights
- 8pm63%207 flights
- 9pm91%77 flights
Best day of the week
On-time arrival rate by day of departure.
- Monday66%0.8% cancelled
- Tuesday83%0.0% cancelled
- Wednesday77%0.0% cancelled
- Thursday72%0.0% cancelled
- Friday73%0.0% cancelled
- Saturday82%0.4% cancelled
- Sunday78%0.8% cancelled
On-time trend by month
Why flights are late
Share of delay minutes by cause, as reported by airlines to the DOT.
- Late-arriving aircraft42%
- Air traffic control & airport congestion30%
- Airline (crew, maintenance, cleaning, fueling)24%
- Extreme weather4%
- Security0%
Why flights are cancelled
Share of cancellations by reason.
- Extreme weather60%
- Air traffic control & airport congestion40%
- Airline (crew, maintenance, cleaning, fueling)0%
- Security0%
SFO to BOI: common questions
- How often are SFO to BOI flights on time?
- 76% 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 San Francisco to Boise cancelled?
- 0.3% of scheduled flights were cancelled (5 of 1,713).
- How long are typical delays?
- Across all flights the average arrival delay was 18 min (early arrivals count as zero). Flights that were late arrived 71 min behind schedule on average, and 8.5% of flights were an hour or more late.
- How long is taxi time at SFO?
- Flights on this route spent 24 min taxiing from the gate to takeoff on average.
Related routes
Return trip: BOI to SFO — 68% on time
More flights from San Francisco
Data: U.S. DOT Bureau of Transportation Statistics, Aug 2025 – Jul 2026 (12 months). Latest month published by BTS: July 2026. Route: SFO → BOI, nonstop flights by US airlines that report to the DOT. How we calculate this.