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

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

Historically, 82.3% of scheduled reportable flights on this direction arrived on time in July 2025–June 2026. The sample includes 2,958 flights.

HISTORICAL ROUTE SIGNALLower disruption
82.3%arrived on time
9.6%30+ min late
0.8%cancelled
2,958scheduled flights
Based on July 2025–June 2026; on time means arrival less than 15 minutes late.
60+ minutes late4.1%all scheduled flights
120+ minutes late1.3%all scheduled flights
Diverted0.3%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 morning66892.1%4.0%0.4%
Late morning76080.4%8.9%1.3%
Afternoon65077.4%13.1%0.3%
Evening53776.9%14.5%1.1%
Night34384.8%7.6%1.2%

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
Monday44486.5%5.9%0.5%
Tuesday41586.7%7.5%0.5%
Wednesday39882.7%9.5%1.0%
Thursday41878.2%14.1%1.0%
Friday44278.5%9.5%0.9%
Saturday37782.2%9.8%1.3%
Sunday46481.0%11.0%0.9%

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
Delta Air Lines1,73182.9%9.7%0.8%
SkyWest Airlines68584.7%6.9%1.0%
Southwest Airlines40875.2%14.0%0.2%
Frontier Airlines13382.7%9.0%2.3%
Alaska Airlines1100.0%0.0%0.0%

Monthly trend

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

MonthFlightsOn time30+ minCancelled
July 202522182.4%12.2%0.0%
August 202520881.2%9.1%0.0%
September 202518087.2%7.2%1.1%
October 202523879.8%10.1%0.0%
November 202526880.2%9.0%2.6%
December 202527476.6%14.2%0.7%
January 202625183.3%8.8%0.8%
February 202625982.2%7.7%1.5%
March 202629390.1%5.8%1.0%
April 202627284.2%10.3%0.0%
May 202624084.6%6.7%0.8%
June 202625475.6%13.8%1.2%

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.

Airline39.8%
Late aircraft30.1%
National airspace25.2%
Weather4.9%
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.