BTS DATA COMPLETE THROUGH JUNE 2026HISTORICAL ODDS · NOT LIVE FLIGHT STATUS
DelayOddsKnow the route before you book
BOI→SJC

Boise, ID (BOI) to San Jose, CA (SJC) flight delay odds

83.9% of 658 official scheduled BOI-to-SJC flights arrived on time; 8.8% arrived at least 30 minutes late and 0.2% were cancelled during July 2025–June 2026.

Source: U.S. Bureau of Transportation Statistics · Reporting window: July 2025–June 2026 · Updated September 16, 2026

HISTORICAL ROUTE SIGNALLower disruption
83.9%arrived on time
8.8%30+ min late
0.2%cancelled
658scheduled flights
Based on July 2025–June 2026; on time means arrival less than 15 minutes late.
60+ minutes late4.0%all scheduled flights
120+ minutes late1.1%all scheduled flights
Diverted0.0%did not reach as scheduled
Average arrival+0.6 mincompleted flights

Which departure time was most reliable for BOI to SJC?

Among qualifying BOI-to-SJC departure window results, Late morning had the highest on-time rate: 93.1% of 261 flights. Evening was lowest at 60.0% across 55 flights.

Departure windowFlightsOn time30+ minCancelled
Early morning8887.5%4.5%1.1%
Late morning26193.1%3.1%0.0%
Afternoon25478.3%13.0%0.0%
Evening5560.0%23.6%0.0%

Which weekday was most reliable for BOI to SJC?

Among qualifying BOI-to-SJC weekday results, Wednesday had the highest on-time rate: 93.2% of 88 flights. Friday was lowest at 75.5% across 102 flights.

DayFlightsOn time30+ minCancelled
Monday10275.5%11.8%0.0%
Tuesday9186.8%5.5%0.0%
Wednesday8893.2%2.3%0.0%
Thursday9983.8%12.1%0.0%
Friday10275.5%12.7%1.0%
Saturday6590.8%3.1%0.0%
Sunday11185.6%10.8%0.0%

Which airline was most reliable for BOI to SJC?

Among qualifying BOI-to-SJC airline results, SkyWest Airlines had the highest on-time rate: 91.8% of 328 flights. Southwest Airlines was lowest at 76.1% across 330 flights.

AirlineFlightsOn time30+ minCancelled
Southwest Airlines33076.1%13.9%0.0%
SkyWest Airlines32891.8%3.7%0.3%

Which month was most reliable for BOI to SJC?

Among qualifying BOI-to-SJC month results, January 2026 had the highest on-time rate: 93.3% of 60 flights. July 2025 was lowest at 72.6% across 62 flights.

MonthFlightsOn time30+ minCancelled
July 20256272.6%17.7%0.0%
August 20256285.5%9.7%0.0%
September 20256081.7%8.3%0.0%
October 20255882.8%12.1%0.0%
November 20256283.9%6.5%1.6%
December 20257184.5%5.6%0.0%
January 20266093.3%3.3%0.0%
February 20263889.5%5.3%0.0%
March 20263485.3%11.8%0.0%
April 20264682.6%10.9%0.0%
May 20264783.0%4.3%0.0%
June 20265884.5%10.3%0.0%

What drove BOI to SJC delay minutes?

Late aircraft was the largest recorded BOI-to-SJC delay category, accounting for 57.9% of 5,641 BTS-attributed delay minutes during July 2025–June 2026.

Airline36.8%
Late aircraft57.9%
National airspace3.4%
Weather1.8%
Security0.0%
This is historical evidence, not a forecast.

Weather, schedules and operations change. For a trip you have already booked, use the airline or airport for live status.