Best Time to Fly BNA to SAN: On-Time Stats by Hour & Airline
Nashville International → San Diego International
Data through July 2026 · Last updated October 18, 2026
1,065 flights were scheduled from Nashville (BNA) to San Diego (SAN) in the last 12 months, and 74.0% of those that flew arrived on time, 3.6 points below the US average of 77.6%.
Southwest Airlines was the only reporting airline with regular flights on this route.
Over 24 months, Tuesday was the most reliable day (84% on time) and June the worst month (59%).
The cancellation rate was 0.8% (US average 1.8%).
BNA to SAN 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 | 74.0% | 44 min | 0.8% | 1,065 |
80%+ good 70–79.9% fair <70% poor
Best time of day to fly BNA to SAN
On-time arrival % by scheduled departure hour (local time), 2,012 flights over 24 months.
Show the numbers
| Departure hour | On time | Cancelled | Flights |
|---|---|---|---|
| 5am–6am | Limited data | 2 | |
| 6am–7am | 89.8% | 0.4% | 249 |
| 7am–8am | 92.3% | 0.6% | 172 |
| 8am–9am | 88.5% | 0.8% | 254 |
| 9am–10am | Limited data | 19 | |
| 11am–12pm | 72.8% | 0.0% | 104 |
| 12pm–1pm | 84.0% | 0.0% | 106 |
| 1pm–2pm | 62.9% | 0.5% | 189 |
| 2pm–3pm | 69.4% | 0.0% | 85 |
| 3pm–4pm | 54.0% | 1.3% | 77 |
| 4pm–5pm | 81.3% | 1.1% | 93 |
| 5pm–6pm | 64.2% | 1.4% | 69 |
| 6pm–7pm | 73.4% | 0.7% | 149 |
| 7pm–8pm | 52.6% | 1.2% | 80 |
| 8pm–9pm | 65.7% | 0.6% | 324 |
| 9pm–10pm | 67.5% | 0.0% | 40 |
Best day of the week
24 months, by day of departure.
Best month to fly
24 months, by calendar month.
Holiday travel on BNA to SAN
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) | 70.3% | -8.0 pts | 0.0% | 37 |
| Christmas & New Year (Dec 20 - Jan 3) | 65.9% | -12.4 pts | 1.1% | 90 |
| Summer peak (Jun 15 - Aug 15) | 67.8% | -10.5 pts | 0.0% | 369 |
| All other days | 78.3% | — | 0.7% | 1,516 |
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).