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

San Diego, CA (SAN) to Boise, ID (BOI) flight delay odds

78.3% of 1,042 official scheduled SAN-to-BOI flights arrived on time; 14.2% arrived at least 30 minutes late and 0.4% 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
78.3%arrived on time
14.2%30+ min late
0.4%cancelled
1,042scheduled flights
Based on July 2025–June 2026; on time means arrival less than 15 minutes late.
60+ minutes late6.1%all scheduled flights
120+ minutes late1.6%all scheduled flights
Diverted0.0%did not reach as scheduled
Average arrival+3.3 mincompleted flights

Which departure time was most reliable for SAN to BOI?

Among qualifying SAN-to-BOI departure window results, Early morning had the highest on-time rate: 89.1% of 175 flights. Afternoon was lowest at 66.5% across 221 flights.

Departure windowFlightsOn time30+ minCancelled
Early morning17589.1%4.6%0.0%
Late morning21785.3%11.5%0.5%
Afternoon22166.5%20.4%0.0%
Evening41377.5%15.3%0.7%

Which weekday was most reliable for SAN to BOI?

Among qualifying SAN-to-BOI weekday results, Tuesday had the highest on-time rate: 88.8% of 143 flights. Thursday was lowest at 68.6% across 159 flights.

DayFlightsOn time30+ minCancelled
Monday16276.5%16.7%0.0%
Tuesday14388.8%7.0%0.0%
Wednesday13981.3%8.6%0.7%
Thursday15968.6%20.8%1.9%
Friday15869.6%21.5%0.0%
Saturday13287.1%8.3%0.0%
Sunday14979.2%14.1%0.0%

Which airline was most reliable for SAN to BOI?

Among qualifying SAN-to-BOI airline results, SkyWest Airlines had the highest on-time rate: 86.7% of 405 flights. Southwest Airlines was lowest at 68.0% across 372 flights.

AirlineFlightsOn time30+ minCancelled
SkyWest Airlines40586.7%9.9%0.2%
Southwest Airlines37268.0%21.0%0.0%
Alaska Airlines26580.0%11.3%1.1%

Which month was most reliable for SAN to BOI?

Among qualifying SAN-to-BOI month results, September 2025 had the highest on-time rate: 88.4% of 86 flights. June 2026 was lowest at 68.6% across 86 flights.

MonthFlightsOn time30+ minCancelled
July 20259174.7%14.3%0.0%
August 20258880.7%10.2%0.0%
September 20258688.4%4.7%1.2%
October 20259185.7%8.8%1.1%
November 20259078.9%10.0%1.1%
December 20259477.7%17.0%0.0%
January 20267375.3%15.1%1.4%
February 20267486.5%8.1%0.0%
March 20268980.9%14.6%0.0%
April 20267974.7%15.2%0.0%
May 202610169.3%26.7%0.0%
June 20268668.6%23.3%0.0%

What drove SAN to BOI delay minutes?

Late aircraft was the largest recorded SAN-to-BOI delay category, accounting for 59.2% of 11,906 BTS-attributed delay minutes during July 2025–June 2026.

Airline24.8%
Late aircraft59.2%
National airspace13.8%
Weather2.2%
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.