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

Boise, ID (BOI) to Sacramento, CA (SMF) flight delay odds

Historically, 83.7% of scheduled reportable flights on this direction arrived on time in July 2025–June 2026. The sample includes 855 flights.

HISTORICAL ROUTE SIGNALLower disruption
83.7%arrived on time
8.9%30+ min late
0.1%cancelled
855scheduled flights
Based on July 2025–June 2026; on time means arrival less than 15 minutes late.
60+ minutes late3.7%all scheduled flights
120+ minutes late1.4%all scheduled flights
Diverted0.2%did not reach as scheduled
Average arrival+1.9 mincompleted flights

When is this route most reliable?

The same route can behave differently through the day. These are scheduled departure windows, not actual departure times. Small time windows with fewer than 40 flights are withheld.

Departure windowFlightsOn time30+ minCancelled
Early morning36297.0%1.1%0.0%
Afternoon12681.7%9.5%0.0%
Evening28173.0%16.0%0.4%
Night4852.1%29.2%0.0%

Weekday comparison

Day-of-week results use at least 30 scheduled flights per row. Look for broad patterns, not tiny percentage differences.

DayFlightsOn time30+ minCancelled
Monday13284.8%7.6%0.0%
Tuesday11989.9%5.9%0.0%
Wednesday11387.6%7.1%0.0%
Thursday12881.2%8.6%0.0%
Friday13378.2%14.3%0.0%
Saturday9189.0%3.3%1.1%
Sunday13978.4%12.9%0.0%

Airline comparison

Marketing-carrier results make codeshare flights easier to compare as travelers buy them. Dedicated route-airline reports require at least 160 flights.

AirlineFlightsOn time30+ minCancelled
Southwest Airlines85583.7%8.9%0.1%

Monthly trend

Month-by-month results show whether a twelve-month average hides an unusual period.

MonthFlightsOn time30+ minCancelled
July 20258478.6%13.1%0.0%
August 20257483.8%6.8%0.0%
September 20257389.0%4.1%0.0%
October 20255882.8%10.3%0.0%
November 20257584.0%6.7%0.0%
December 20257781.8%7.8%0.0%
January 20266789.6%4.5%0.0%
February 20267092.9%2.9%0.0%
March 20266489.1%9.4%1.6%
April 20266382.5%7.9%0.0%
May 20266774.6%19.4%0.0%
June 20268378.3%13.3%0.0%

What drove reported delay minutes?

BTS cause minutes are reported for qualifying delayed flights. These shares describe recorded delay minutes—not the chance that a particular cause will affect your next flight.

Airline34.3%
Late aircraft64.6%
National airspace1.0%
Weather0.0%
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.