BOI to SFO flight delays & on-time performance
Nonstop flights from Boise Air Terminal/Gowen Field to San Francisco International Airport · 522 miles · Aug 2025 – Jul 2026
No FAA-reported ground stops or delays at BOI or SFO right now. Individual flights can still be delayed by the airline; check with your airline for your flight.
Key facts
- Flights from Boise (BOI) to San Francisco (SFO) arrived on time 68% of the time in Aug 2025 – Jul 2026, worse than the 78% national average.
- 0.5% were cancelled, and 13% arrived an hour or more late.
- SkyWest Airlines was the most punctual airline here (69% on time); United Airlines was the least (67%).
- Departures scheduled around 6am did best (95% on time); around 10am did worst (54%).
- Saturday was the most reliable day to fly (80% on time) and Thursday the least (63%).
- The largest source of delay minutes was air traffic control & airport congestion (52%).
Which airline is most on time from BOI to SFO?
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. | 69% | 0.4% | 24 min | 12.3% | 1,485 |
| United Airlines | 67% | 0.9% | 36 min | 18.9% | 231 |
Best time of day to fly
On-time arrival rate by scheduled departure hour (local time).
- 6am95%221 flights
- 7am89%158 flights
- 8am60%191 flights
- 9am58%119 flights
- 10am54%277 flights
- 12pm62%77 flights
- 1pm76%49 flights
- 2pm74%246 flights
- 4pm53%39 flights
- 6pm57%83 flights
- 7pm60%256 flights
Best day of the week
On-time arrival rate by day of departure.
- Monday64%0.4% cancelled
- Tuesday74%0.9% cancelled
- Wednesday66%0.4% cancelled
- Thursday63%0.0% cancelled
- Friday65%0.4% cancelled
- Saturday80%0.9% cancelled
- Sunday69%0.4% cancelled
On-time trend by month
Why flights are late
Share of delay minutes by cause, as reported by airlines to the DOT.
- Air traffic control & airport congestion52%
- Airline (crew, maintenance, cleaning, fueling)29%
- Late-arriving aircraft17%
- Extreme weather2%
- Security0%
Why flights are cancelled
Share of cancellations by reason.
- Air traffic control & airport congestion50%
- Extreme weather38%
- Airline (crew, maintenance, cleaning, fueling)13%
- Security0%
BOI to SFO: common questions
- How often are BOI to SFO flights on time?
- 68% 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 Boise to San Francisco cancelled?
- 0.5% of scheduled flights were cancelled (8 of 1,716).
- How long are typical delays?
- Across all flights the average arrival delay was 26 min (early arrivals count as zero). Flights that were late arrived 79 min behind schedule on average, and 13.2% of flights were an hour or more late.
- How long is taxi time at BOI?
- Flights on this route spent 22 min taxiing from the gate to takeoff on average.
Related routes
Return trip: SFO to BOI — 76% on time
More flights from Boise
Data: U.S. DOT Bureau of Transportation Statistics, Aug 2025 – Jul 2026 (12 months). Latest month published by BTS: July 2026. Route: BOI → SFO, nonstop flights by US airlines that report to the DOT. How we calculate this.