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

Salt Lake City, UT (SLC) to San Francisco, CA (SFO) flight delay odds

Historically, 68.3% of scheduled reportable flights on this direction arrived on time in July 2025–June 2026. The sample includes 3,472 flights.

HISTORICAL ROUTE SIGNALVariable
68.3%arrived on time
20.5%30+ min late
1.0%cancelled
3,472scheduled flights
Based on July 2025–June 2026; on time means arrival less than 15 minutes late.
60+ minutes late10.2%all scheduled flights
120+ minutes late3.7%all scheduled flights
Diverted0.1%did not reach as scheduled
Average arrival+12.3 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 morning78076.2%14.1%0.6%
Late morning54757.4%27.4%0.4%
Afternoon1,15973.8%17.5%1.0%
Evening62256.8%31.7%2.1%
Night36470.1%14.3%0.3%

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
Monday52961.6%23.8%1.5%
Tuesday47075.7%13.8%0.9%
Wednesday47768.6%19.7%0.6%
Thursday51466.0%23.2%0.4%
Friday52569.0%19.8%1.1%
Saturday43175.6%16.7%0.7%
Sunday52663.7%25.1%1.3%

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 Lines1,70666.6%19.4%0.9%
SkyWest Airlines1,10467.8%22.4%1.3%
United Airlines48476.4%18.0%0.2%
Frontier Airlines17865.2%26.4%1.7%

Monthly trend

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

MonthFlightsOn time30+ minCancelled
July 202531476.1%14.3%0.6%
August 202529581.0%6.8%0.3%
September 202525080.4%10.0%0.0%
October 202528370.3%19.1%0.0%
November 202526570.6%17.7%2.3%
December 202529571.5%19.7%1.7%
January 202626977.0%13.0%1.9%
February 202628474.6%16.5%0.4%
March 202632583.1%12.0%0.9%
April 202629449.0%31.3%1.4%
May 202630745.6%38.8%1.0%
June 202629141.9%45.0%1.0%

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.

Airline26.3%
Late aircraft21.0%
National airspace51.6%
Weather1.1%
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.