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

San Diego, CA (SAN) to Salt Lake City, UT (SLC) flight delay odds

83.6% of 2,961 official scheduled SAN-to-SLC flights arrived on time; 9.9% arrived at least 30 minutes late and 0.7% 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
83.6%arrived on time
9.9%30+ min late
0.7%cancelled
2,961scheduled flights
Based on July 2025–June 2026; on time means arrival less than 15 minutes late.
60+ minutes late5.2%all scheduled flights
120+ minutes late1.7%all scheduled flights
Diverted0.2%did not reach as scheduled
Average arrival+1.5 mincompleted flights

Which departure time was most reliable for SAN to SLC?

Among qualifying SAN-to-SLC departure window results, Early morning had the highest on-time rate: 92.6% of 538 flights. Afternoon was lowest at 79.1% across 702 flights.

Departure windowFlightsOn time30+ minCancelled
Early morning53892.6%4.1%0.7%
Late morning62388.6%6.1%0.6%
Afternoon70279.1%11.7%1.1%
Evening1,09879.3%13.7%0.5%

Which weekday was most reliable for SAN to SLC?

Among qualifying SAN-to-SLC weekday results, Monday had the highest on-time rate: 88.7% of 444 flights. Thursday was lowest at 78.0% across 418 flights.

DayFlightsOn time30+ minCancelled
Monday44488.7%6.1%0.5%
Tuesday41788.2%7.4%0.5%
Wednesday39886.2%6.8%1.0%
Thursday41878.0%14.8%1.0%
Friday44379.0%12.4%0.2%
Saturday37784.6%8.5%1.3%
Sunday46481.0%12.5%0.6%

Which airline was most reliable for SAN to SLC?

Among qualifying SAN-to-SLC airline results, Delta Air Lines had the highest on-time rate: 87.8% of 1,732 flights. Southwest Airlines was lowest at 76.2% across 408 flights.

AirlineFlightsOn time30+ minCancelled
Delta Air Lines1,73287.8%6.8%0.8%
SkyWest Airlines68877.8%15.0%0.7%
Southwest Airlines40876.2%13.5%0.2%
Frontier Airlines13382.7%12.0%0.8%

Which month was most reliable for SAN to SLC?

Among qualifying SAN-to-SLC month results, April 2026 had the highest on-time rate: 87.9% of 272 flights. July 2025 was lowest at 78.7% across 221 flights.

MonthFlightsOn time30+ minCancelled
July 202522178.7%13.6%0.0%
August 202520882.7%12.0%0.0%
September 202518085.6%6.1%1.1%
October 202523885.3%10.5%0.0%
November 202526882.5%10.1%1.9%
December 202527580.7%11.3%0.4%
January 202625283.3%10.7%0.8%
February 202625986.5%7.7%1.2%
March 202629486.1%7.5%0.7%
April 202627287.9%7.7%0.4%
May 202624082.5%9.6%0.8%
June 202625481.1%11.8%1.2%

What drove SAN to SLC delay minutes?

Late aircraft was the largest recorded SAN-to-SLC delay category, accounting for 56.4% of 29,971 BTS-attributed delay minutes during July 2025–June 2026.

Airline30.5%
Late aircraft56.4%
National airspace10.0%
Weather3.0%
Security0.1%
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.