SFO to SLC flight delays
San Francisco, CA (SFO) Salt Lake City, UT (SLC) · 599 miles
291 flights · March 2025 – August 2026 · US Bureau of Transportation Statistics
61.81%
Arrived on time
Within 15 minutes of schedule
1.03%
Cancelled
Share of scheduled flights
59 min
When late, late by
Average across delayed arrivals
24 min
Delay per flight
Averaged over every flight flown
What the record says about this route
The two directions do not behave alike. SLC to SFO arrives on time 19.5 points less often than the outbound. Delay accumulates through the flying day, so whichever direction is scheduled later tends to carry the worse record — which is an argument for booking the morning departure if the choice exists.
This is a late route. Flights from San Francisco to Salt Lake City miss their scheduled arrival often enough that a tight connection at the far end is a connection at risk.
Only Delta Air Lines flies this route in the published record, so there is no choice to weigh — the route's figures and the airline's are the same figures.
This is a thin route — 291 flights across the whole period. On a route this infrequent a cancellation is far more costly than the rate suggests, because the next departure may not be the same day.
Which airline should you fly on this route?
Over March 2025 – August 2026, Delta Air Lines arrived on time most often on SFO to SLC.
Every airline on SFO to SLC
Ranked by how many flights each one operated. A carrier with fewer than 100 flights in the period is listed but not graded.
| Airline | Flights | On time | Cancelled | Avg delay | Grade |
|---|---|---|---|---|---|
| Delta Air Lines | 143 | 61.7% | 1.4% | 64 min | D |
| SkyWest Airlines | 60 | 65% | 0% | 49 min | — |
| United Airlines | 58 | 50% | 0% | 62 min | — |
| Frontier Airlines | 30 | 79.31% | 3.33% | 44 min | — |
Other routes from San Francisco
Common questions
Are flights from San Francisco to Salt Lake City usually delayed?
61.81% of flights on the SFO to SLC route arrived within 15 minutes of schedule, so roughly 4 in every ten arrived late. That is worse than the average route in this record.
Which airlines fly from San Francisco to Salt Lake City?
Only Delta Air Lines appears in the published record on this route, with 143 flights and 61.7% arriving on time.
How often are SFO to SLC flights cancelled?
1.03% of scheduled flights did not operate — about 10 in every thousand. That is in the normal range.
When SFO to SLC flights are late, how late are they?
About 59 minutes on average across the flights that arrived more than 15 minutes behind schedule.
What these figures do and do not tell you
Everything on this page is counted from the flights that actually operated on SFO to SLC during March 2025 – August 2026, as reported by the airlines to the US Bureau of Transportation Statistics. "On time" is the federal definition: arriving at the gate within 15 minutes of the scheduled time.
A route's record is a description of the past, not a forecast. Weather, air traffic control and the aircraft's earlier flights that day drive most delays, and none of them are predictable from a historical rate. What the record does tell you is whether this route runs late more often than others, and which carrier on it has the better history — which is the part you can actually act on when you book.
Cancellations are counted separately from delays because they are a different problem for a traveller: a late flight still gets you there. How the grade is calculated →