Best Time to Fly SAN to BNA: On-Time Stats by Hour & Airline
San Diego International → Nashville International
Data through July 2026 · Last updated October 18, 2026
Over the last 12 months, 74.1% of San Diego (SAN) to Nashville (BNA) flights arrived on time (1,092 scheduled flights). That is 3.5 points below the national average of 77.6%.
Southwest Airlines was the only reporting airline with regular flights on this route.
February has been the best month (86% on time) and Friday the weakest day of the week (64%).
0.9% of flights were cancelled, versus 1.8% nationally.
SAN to BNA 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 | 74.1% | 45 min | 0.9% | 1,092 |
80%+ good 70–79.9% fair <70% poor
Best time of day to fly SAN to BNA
On-time arrival % by scheduled departure hour (local time), 2,027 flights over 24 months.
Show the numbers
| Departure hour | On time | Cancelled | Flights |
|---|---|---|---|
| 6am–7am | 89.6% | 0.4% | 511 |
| 7am–8am | 82.6% | 0.9% | 111 |
| 8am–9am | 91.0% | 0.0% | 89 |
| 9am–10am | Limited data | 27 | |
| 10am–11am | 67.4% | 1.4% | 143 |
| 11am–12pm | Limited data | 28 | |
| 12pm–1pm | 47.2% | 0.0% | 179 |
| 1pm–2pm | 60.9% | 0.0% | 221 |
| 2pm–3pm | 76.0% | 1.6% | 123 |
| 3pm–4pm | Limited data | 19 | |
| 4pm–5pm | 80.0% | 0.0% | 70 |
| 5pm–6pm | 62.6% | 1.6% | 125 |
| 6pm–7pm | 61.9% | 0.6% | 156 |
| 7pm–8pm | 62.2% | 2.6% | 76 |
| 10pm–11pm | 95.2% | 2.7% | 149 |
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 BNA
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) | 86.5% | +7.7 pts | 0.0% | 37 |
| Christmas & New Year (Dec 20 - Jan 3) | 55.1% | -23.7 pts | 1.1% | 90 |
| Summer peak (Jun 15 - Aug 15) | 64.3% | -14.5 pts | 0.0% | 390 |
| All other days | 78.8% | — | 1.0% | 1,510 |
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).