Best Time to Fly BWI to BNA: On-Time Stats by Hour & Airline
Baltimore/Washington International Thurgood Marshall → Nashville International
Data through July 2026 · Last updated October 18, 2026
Over the last 12 months, 80.4% of Baltimore (BWI) to Nashville (BNA) flights arrived on time (1,812 scheduled flights). That is 2.8 points above the national average of 77.6%.
Among 2 airlines, Spirit Airlines led with 81.1% on time and Southwest Airlines was last with 80.4%.
Over 24 months, Wednesday was the most reliable day (84% on time) and June the worst month (70%).
The cancellation rate was 1.9% (US average 1.8%).
BWI 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 |
|---|---|---|---|---|
| Spirit Airlines | 81.1% | 54 min | 3.6% | 55 |
| Southwest Airlines | 80.4% | 53 min | 1.8% | 1,757 |
80%+ good 70–79.9% fair <70% poor
Best time of day to fly BWI to BNA
On-time arrival % by scheduled departure hour (local time), 3,749 flights over 24 months.
Show the numbers
| Departure hour | On time | Cancelled | Flights |
|---|---|---|---|
| 6am–7am | 94.3% | 1.0% | 500 |
| 7am–8am | 94.2% | 0.0% | 139 |
| 8am–9am | 94.3% | 2.1% | 288 |
| 9am–10am | 88.5% | 0.5% | 378 |
| 10am–11am | 90.2% | 2.7% | 188 |
| 11am–12pm | 86.9% | 0.0% | 61 |
| 12pm–1pm | 83.7% | 0.7% | 143 |
| 1pm–2pm | 71.8% | 1.5% | 259 |
| 2pm–3pm | 74.9% | 1.2% | 250 |
| 3pm–4pm | 75.9% | 0.9% | 109 |
| 4pm–5pm | 69.6% | 1.2% | 160 |
| 5pm–6pm | 77.4% | 1.2% | 243 |
| 6pm–7pm | 72.8% | 1.3% | 309 |
| 7pm–8pm | 67.3% | 3.8% | 289 |
| 8pm–9pm | 76.0% | 2.5% | 158 |
| 9pm–10pm | 72.3% | 1.1% | 187 |
| 10pm–11pm | 56.5% | 3.4% | 88 |
Best day of the week
24 months, by day of departure.
Best month to fly
24 months, by calendar month.
Holiday travel on BWI 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) | 74.2% | -9.3 pts | 0.0% | 66 |
| Christmas & New Year (Dec 20 - Jan 3) | 72.2% | -11.3 pts | 0.8% | 134 |
| Summer peak (Jun 15 - Aug 15) | 71.7% | -11.8 pts | 2.7% | 663 |
| All other days | 83.5% | — | 1.3% | 2,886 |
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).