SJC to BOI flight delays & on-time performance
Nonstop flights from Mineta San Jose International Airport to Boise Air Terminal/Gowen Field · 523 miles · Aug 2025 – Jul 2026
No FAA-reported ground stops or delays at SJC 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 Jose (SJC) to Boise (BOI) arrived on time 83% of the time in Aug 2025 – Jul 2026, better than the 78% national average.
- 0.3% were cancelled, and 4% arrived an hour or more late.
- SkyWest Airlines was the most punctual airline here (87% on time); Southwest Airlines was the least (80%).
- Departures scheduled around 8am did best (96% on time); around 4pm did worst (58%).
- Tuesday was the most reliable day to fly (96% on time) and Thursday the least (75%).
- The largest source of delay minutes was late-arriving aircraft (69%).
Which airline is most on time from SJC 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 |
|---|---|---|---|---|---|
| SkyWest AirlinesRegional airline operating flights for United Express, Delta Connection, American Eagle and Alaska. | 87% | 0.6% | 8 min | 3.5% | 346 |
| Southwest Airlines | 80% | 0.0% | 11 min | 5.2% | 330 |
Best time of day to fly
On-time arrival rate by scheduled departure hour (local time).
- 8am96%24 flights
- 9am95%65 flights
- 10am86%14 flights
- 11am93%92 flights
- 12pm85%27 flights
- 3pm58%45 flights
- 4pm58%92 flights
- 5pm92%59 flights
- 6pm85%13 flights
- 7pm87%237 flights
Best day of the week
On-time arrival rate by day of departure.
- Monday79%0.0% cancelled
- Tuesday96%0.0% cancelled
- Wednesday94%0.0% cancelled
- Thursday75%1.0% cancelled
- Friday77%0.9% cancelled
- Saturday84%0.0% cancelled
- Sunday82%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 aircraft69%
- Airline (crew, maintenance, cleaning, fueling)16%
- Air traffic control & airport congestion12%
- Extreme weather3%
- Security0%
Why flights are cancelled
Share of cancellations by reason.
- Airline (crew, maintenance, cleaning, fueling)50%
- Extreme weather50%
- Air traffic control & airport congestion0%
- Security0%
SJC to BOI: common questions
- How often are SJC to BOI flights on time?
- 83% 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 Jose to Boise cancelled?
- 0.3% of scheduled flights were cancelled (2 of 676).
- 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 51 min behind schedule on average, and 4.3% of flights were an hour or more late.
- How long is taxi time at SJC?
- Flights on this route spent 12 min taxiing from the gate to takeoff on average.
Related routes
Return trip: BOI to SJC — 86% on time
More flights from San Jose
Data: U.S. DOT Bureau of Transportation Statistics, Aug 2025 – Jul 2026 (12 months). Latest month published by BTS: July 2026. Route: SJC → BOI, nonstop flights by US airlines that report to the DOT. How we calculate this.