Route Reliability
San Diego → San Francisco
SAN–SFO · 447 miles · San Diego International Airport to San Francisco International Airport
- 68%
- Arrive within 15 minutes
- 14 min
- Average arrival delay
- 1.4%
- Cancelled
- 7,073
- Flights in the data
Data through May 2026.
Who flies it best
Ranked by on-time arrivals. Historical results, not predictions.
- 1.United Airlines74%2,608 flights
- 2.Alaska Airlines68%2,391 flights
- 3.Southwest Airlines62%1,886 flights
- 4.Frontier Airlines50%188 flights
What the data says
Morning-you made the right choice.
SAN–SFO flights departing between 6–9 AM arrived on time 77% of the time, versus 54% between 6–9 PM.
Thursdays have been rough.
SAN–SFO flights arrived on time 78% of the time on Tuesdays and just 62% on Thursdays. That gap is worth planning around.
United Airlines has a clear lead on this route.
United Airlines arrived on time 74% of the time on this route; Frontier Airlines managed 50%.
Recent months have been rougher.
SAN–SFO flights arrived on time 59% 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
- Mon65%(1068 flights)
- Tue78%(937 flights)
- Wed69%(930 flights)
- Thu62%(1063 flights)
- Fri64%(1074 flights)
- Sat77%(808 flights)
- Sun64%(1071 flights)
- 6–9 AM77%(1594 flights)
- 9 AM–12 PM67%(1252 flights)
- 12–3 PM69%(1148 flights)
- 3–6 PM72%(1393 flights)
- 6–9 PM54%(1300 flights)
- 9 PM–12 AM65%(264 flights)
Jun 69% → May 42% on time
| Month | On-time percentage | Flights |
|---|---|---|
| June 2025 | 69% | 576 |
| July 2025 | 65% | 576 |
| August 2025 | 71% | 588 |
| September 2025 | 74% | 570 |
| October 2025 | 66% | 657 |
| November 2025 | 68% | 588 |
| December 2025 | 70% | 578 |
| January 2026 | 82% | 573 |
| February 2026 | 75% | 517 |
| March 2026 | 83% | 558 |
| April 2026 | 51% | 573 |
| May 2026 | 42% | 597 |
Same trip, other airports
Keep nerding
Based on 7,073 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.