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

San Francisco, CA (SFO) to Boise, ID (BOI) flight delay odds

76.1% of 1,681 official scheduled SFO-to-BOI flights arrived on time; 16.2% arrived at least 30 minutes late and 0.3% 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 SIGNALGenerally reliable
76.1%arrived on time
16.2%30+ min late
0.3%cancelled
1,681scheduled flights
Based on July 2025–June 2026; on time means arrival less than 15 minutes late.
60+ minutes late8.1%all scheduled flights
120+ minutes late3.3%all scheduled flights
Diverted0.1%did not reach as scheduled
Average arrival+7.9 mincompleted flights

Which departure time was most reliable for SFO to BOI?

Among qualifying SFO-to-BOI departure window results, Early morning had the highest on-time rate: 93.2% of 162 flights. Evening was lowest at 72.5% across 614 flights.

Departure windowFlightsOn time30+ minCancelled
Early morning16293.2%4.9%0.0%
Late morning17178.4%11.1%0.6%
Afternoon65773.1%18.9%0.5%
Evening61472.5%18.7%0.2%
Night7790.9%7.8%0.0%

Which weekday was most reliable for SFO to BOI?

Among qualifying SFO-to-BOI weekday results, Tuesday had the highest on-time rate: 82.1% of 235 flights. Monday was lowest at 66.5% across 251 flights.

DayFlightsOn time30+ minCancelled
Monday25166.5%23.1%0.8%
Tuesday23582.1%14.0%0.0%
Wednesday23878.6%14.7%0.0%
Thursday24473.8%17.6%0.0%
Friday24973.9%17.3%0.0%
Saturday22781.9%12.8%0.4%
Sunday23777.2%13.1%0.8%

Which airline was most reliable for SFO to BOI?

Among qualifying SFO-to-BOI airline results, United Airlines had the highest on-time rate: 79.1% of 230 flights. SkyWest Airlines was lowest at 75.7% across 1,451 flights.

AirlineFlightsOn time30+ minCancelled
SkyWest Airlines1,45175.7%16.7%0.3%
United Airlines23079.1%13.0%0.4%

Which month was most reliable for SFO to BOI?

Among qualifying SFO-to-BOI month results, March 2026 had the highest on-time rate: 89.3% of 178 flights. June 2026 was lowest at 61.4% across 132 flights.

MonthFlightsOn time30+ minCancelled
July 202511975.6%16.0%0.0%
August 202511675.0%12.9%0.0%
September 202511379.6%14.2%0.0%
October 202513178.6%9.2%0.0%
November 202514883.1%9.5%0.7%
December 202515167.5%26.5%0.7%
January 202615179.5%13.9%0.0%
February 202613181.7%15.3%0.0%
March 202617889.3%10.1%0.0%
April 202616577.0%11.5%1.8%
May 202614662.3%28.1%0.0%
June 202613261.4%28.0%0.0%

What drove SFO to BOI delay minutes?

Late aircraft was the largest recorded SFO-to-BOI delay category, accounting for 42.1% of 27,755 BTS-attributed delay minutes during July 2025–June 2026.

Airline25.8%
Late aircraft42.1%
National airspace28.7%
Weather3.4%
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.