Route Reliability
San Francisco → San Diego
SFO–SAN · 447 miles · San Francisco International Airport to San Diego International Airport
- 69%
- Arrive within 15 minutes
- 15 min
- Average arrival delay
- 1.4%
- Cancelled
- 7,055
- Flights in the data
Data through May 2026.
Who flies it best
Ranked by on-time arrivals. Historical results, not predictions.
- 1.United Airlines77%2,608 flights
- 2.Alaska Airlines70%2,373 flights
- 3.Frontier Airlines61%188 flights
- 4.Southwest Airlines56%1,886 flights
What the data says
Morning-you made the right choice.
SFO–SAN flights departing between 6–9 AM arrived on time 89% of the time, versus 60% between 3–6 PM.
Friday is doing you no favors.
SFO–SAN flights arrived on time 80% of the time on Saturdays and just 62% on Fridays. That gap is worth planning around.
United Airlines has a clear lead on this route.
United Airlines arrived on time 77% of the time on this route; Southwest Airlines managed 56%.
Recent months have been rougher.
SFO–SAN flights arrived on time 64% of the time over the last three months in the data, compared with 72% 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
- Mon64%(1069 flights)
- Tue78%(934 flights)
- Wed72%(929 flights)
- Thu63%(1052 flights)
- Fri62%(1073 flights)
- Sat80%(811 flights)
- Sun66%(1070 flights)
- 3–6 AM78%(51 flights)
- 6–9 AM89%(1490 flights)
- 9 AM–12 PM62%(1577 flights)
- 12–3 PM63%(984 flights)
- 3–6 PM60%(1132 flights)
- 6–9 PM62%(1051 flights)
- 9 PM–12 AM70%(653 flights)
Jun 74% → May 54% on time
| Month | On-time percentage | Flights |
|---|---|---|
| June 2025 | 74% | 576 |
| July 2025 | 68% | 579 |
| August 2025 | 69% | 592 |
| September 2025 | 75% | 571 |
| October 2025 | 66% | 656 |
| November 2025 | 64% | 582 |
| December 2025 | 63% | 576 |
| January 2026 | 80% | 567 |
| February 2026 | 74% | 512 |
| March 2026 | 78% | 558 |
| April 2026 | 59% | 572 |
| May 2026 | 54% | 597 |
Same trip, other airports
Keep nerding
Based on 7,055 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.