BOI to SJC flight delays & on-time performance
Nonstop flights from Boise Air Terminal/Gowen Field to Mineta San Jose International Airport · 523 miles · Aug 2025 – Jul 2026
No FAA-reported ground stops or delays at BOI or SJC 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 Jose (SJC) arrived on time 86% of the time in Aug 2025 – Jul 2026, better than the 78% national average.
- 0.2% were cancelled, and 4% arrived an hour or more late.
- SkyWest Airlines was the most punctual airline here (93% on time); Southwest Airlines was the least (78%).
- Departures scheduled around 9am did best (96% on time); around 5pm did worst (62%).
- Wednesday was the most reliable day to fly (92% on time) and Monday the least (78%).
- The largest source of delay minutes was late-arriving aircraft (60%).
Which airline is most on time from BOI to SJC?
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. | 93% | 0.3% | 5 min | 2.1% | 328 |
| Southwest Airlines | 78% | 0.0% | 12 min | 5.2% | 330 |
Best time of day to fly
On-time arrival rate by scheduled departure hour (local time).
- 7am90%83 flights
- 8am92%36 flights
- 9am96%78 flights
- 10am94%133 flights
- 11am90%20 flights
- 12pm90%80 flights
- 1pm66%41 flights
- 2pm89%63 flights
- 3pm53%17 flights
- 4pm81%48 flights
- 5pm62%37 flights
- 6pm46%13 flights
Best day of the week
On-time arrival rate by day of departure.
- Monday78%0.0% cancelled
- Tuesday88%0.0% cancelled
- Wednesday92%0.0% cancelled
- Thursday90%0.0% cancelled
- Friday81%1.0% cancelled
- Saturday91%0.0% cancelled
- Sunday85%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.
- Late-arriving aircraft60%
- Airline (crew, maintenance, cleaning, fueling)34%
- Air traffic control & airport congestion4%
- Extreme weather2%
- Security0%
Why flights are cancelled
Share of cancellations by reason.
- Extreme weather100%
- Airline (crew, maintenance, cleaning, fueling)0%
- Air traffic control & airport congestion0%
- Security0%
BOI to SJC: common questions
- How often are BOI to SJC flights on time?
- 86% 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 Jose cancelled?
- 0.2% of scheduled flights were cancelled (1 of 658).
- How long are typical delays?
- Across all flights the average arrival delay was 9 min (early arrivals count as zero). Flights that were late arrived 55 min behind schedule on average, and 3.7% of flights were an hour or more late.
- How long is taxi time at BOI?
- Flights on this route spent 14 min taxiing from the gate to takeoff on average.
Related routes
Return trip: SJC to BOI — 83% 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 → SJC, nonstop flights by US airlines that report to the DOT. How we calculate this.