Best Time to Fly SAN to TUS: On-Time Stats by Hour & Airline
San Diego International → Tucson International
Data through July 2026 · Last updated October 18, 2026
Over the last 12 months, 76.2% of San Diego (SAN) to Tucson (TUS) flights arrived on time (654 scheduled flights). That is 1.4 points below the national average of 77.6%.
Southwest Airlines was the only reporting airline with regular flights on this route.
Over 24 months, Saturday was the most reliable day (87% on time) and December the worst month (68%).
The cancellation rate was 0.3% (US average 1.8%).
SAN to TUS 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 |
|---|---|---|---|---|
| Southwest Airlines | 76.2% | 65 min | 0.3% | 654 |
80%+ good 70–79.9% fair <70% poor
Best time of day to fly SAN to TUS
On-time arrival % by scheduled departure hour (local time), 1,267 flights over 24 months.
Show the numbers
| Departure hour | On time | Cancelled | Flights |
|---|---|---|---|
| 8am–9am | 89.5% | 0.0% | 219 |
| 9am–10am | 86.0% | 0.0% | 100 |
| 10am–11am | 85.7% | 0.8% | 120 |
| 11am–12pm | 78.8% | 0.0% | 66 |
| 12pm–1pm | 63.5% | 0.0% | 52 |
| 1pm–2pm | 90.6% | 0.0% | 32 |
| 2pm–3pm | Limited data | 14 | |
| 3pm–4pm | Limited data | 14 | |
| 4pm–5pm | 83.3% | 0.0% | 42 |
| 5pm–6pm | 86.0% | 0.0% | 129 |
| 6pm–7pm | 74.7% | 1.1% | 93 |
| 7pm–8pm | 66.9% | 0.0% | 151 |
| 8pm–9pm | 62.3% | 1.9% | 162 |
| 9pm–10pm | 69.4% | 1.4% | 73 |
Best day of the week
24 months, by day of departure.
Best month to fly
24 months, by calendar month.
Holiday travel on SAN to TUS
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) | Limited data | 23 | ||
| Christmas & New Year (Dec 20 - Jan 3) | 54.4% | -25.9 pts | 6.1% | 49 |
| Summer peak (Jun 15 - Aug 15) | 73.5% | -6.8 pts | 0.4% | 227 |
| All other days | 80.2% | — | 0.2% | 968 |
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).