Best Time to Fly TUS to SFO: On-Time Stats by Hour & Airline
Tucson International → San Francisco International
Data through July 2026 · Last updated October 18, 2026
Over the last 12 months, 69.3% of Tucson (TUS) to San Francisco (SFO) flights arrived on time (945 scheduled flights). That is 8.3 points below the national average of 77.6%.
Among 2 airlines, SkyWest Airlines led with 69.3% on time and United Airlines was last with 68.8%.
Over 24 months, Tuesday was the most reliable day (83% on time) and May the worst month (57%).
The cancellation rate was 0.4% (US average 1.8%).
TUS to SFO on-time performance by airline
Last 12 months. Airlines with fewer than 30 completed flights are marked “limited data”.
| Airline | On time | Avg delay when late | Cancelled | Flights |
|---|---|---|---|---|
| SkyWest Airlines | 69.3% | 68 min | 0.3% | 883 |
| United Airlines | 68.8% | 76 min | 1.6% | 62 |
80%+ good 70–79.9% fair <70% poor
Best time of day to fly TUS to SFO
On-time arrival % by scheduled departure hour (local time), 1,932 flights over 24 months.
Show the numbers
| Departure hour | On time | Cancelled | Flights |
|---|---|---|---|
| 6am–7am | 84.6% | 0.0% | 162 |
| 7am–8am | 75.7% | 0.0% | 244 |
| 8am–9am | 63.8% | 0.0% | 224 |
| 9am–10am | 42.7% | 0.0% | 110 |
| 10am–11am | 77.4% | 0.0% | 31 |
| 11am–12pm | 100.0% | 0.0% | 37 |
| 12pm–1pm | 87.7% | 0.0% | 252 |
| 1pm–2pm | 79.6% | 0.9% | 333 |
| 3pm–4pm | 64.5% | 0.6% | 156 |
| 4pm–5pm | 80.8% | 0.0% | 47 |
| 5pm–6pm | 80.0% | 4.5% | 89 |
| 6pm–7pm | 68.9% | 4.2% | 48 |
| 7pm–8pm | 70.1% | 0.7% | 155 |
| 8pm–9pm | 77.3% | 0.0% | 44 |
Best day of the week
24 months, by day of departure.
Best month to fly
24 months, by calendar month.
Holiday travel on TUS to SFO
On-time arrivals during holiday periods compared with all other days, last 24 months.
| Period | On time | vs other days | Cancelled | Flights |
|---|---|---|---|---|
| Thanksgiving week (Tue before to Mon after) | 91.7% | +16.3 pts | 0.0% | 48 |
| Christmas & New Year (Dec 20 - Jan 3) | 64.0% | -11.4 pts | 3.3% | 90 |
| Summer peak (Jun 15 - Aug 15) | 72.1% | -3.3 pts | 0.0% | 290 |
| All other days | 75.3% | — | 0.5% | 1,504 |
Monthly on-time trend
On-time arrival % each month, with the 12-month US average for reference.
What causes delays on this route
Share of reported delay minutes, last 12 months (BTS cause categories).