Route Reliability
Salt Lake City → San Francisco
SLC–SFO · 599 miles · Salt Lake City International Airport to San Francisco International Airport
- 73%
- Arrive within 15 minutes
- 9 min
- Average arrival delay
- 0.9%
- Cancelled
- 3,507
- Flights in the data
Data through May 2026.
Who flies it best
Ranked by on-time arrivals. Historical results, not predictions.
- 1.United Airlines75%1,551 flights
- 2.Delta Air Lines72%1,718 flights
- 3.Frontier Airlines69%159 flights
Not enough history to rank: Alaska Airlines (79 flights). We rank airlines only after 100 flights on the route.
What the data says
The 12–3 PM departure wins.
SLC–SFO flights departing between 12–3 PM arrived on time 84% of the time, versus 60% between 6–9 PM.
Skip Monday if you can.
SLC–SFO flights arrived on time 80% of the time on Saturdays. On Mondays: 68%.
United Airlines has a slight edge here.
United Airlines arrived on time 75% of the time on this route; Frontier Airlines managed 69%.
Recent months have been rougher.
SLC–SFO flights arrived on time 61% of the time over the last three months in the data, compared with 76% in the three months before that.
Best historical flights
Ranked by on-time arrivals, minimum 100 flights. Past performance, not a promise.
Top flights by on-time rate
More flights on this route
The breakdown
- Mon68%(525 flights)
- Tue80%(458 flights)
- Wed71%(475 flights)
- Thu71%(520 flights)
- Fri74%(526 flights)
- Sat80%(429 flights)
- Sun70%(537 flights)
- 6–9 AM79%(776 flights)
- 9 AM–12 PM65%(545 flights)
- 12–3 PM84%(434 flights)
- 3–6 PM74%(865 flights)
- 6–9 PM60%(487 flights)
- 9 PM–12 AM75%(363 flights)
Jun 78% → May 48% on time
| Month | On-time percentage | Flights |
|---|---|---|
| June 2025 | 78% | 305 |
| July 2025 | 77% | 312 |
| August 2025 | 83% | 293 |
| September 2025 | 81% | 250 |
| October 2025 | 72% | 283 |
| November 2025 | 73% | 258 |
| December 2025 | 73% | 290 |
| January 2026 | 79% | 277 |
| February 2026 | 77% | 287 |
| March 2026 | 84% | 322 |
| April 2026 | 52% | 289 |
| May 2026 | 48% | 304 |
Same trip, other airports
Keep nerding
Based on 3,507 historical flights, because apparently we checked. Historical flight data: U.S. Bureau of Transportation Statistics, June 2025 – May 2026. Data through May 2026. How we calculate this.