Best Time to Fly SEA to BNA: On-Time Stats by Hour & Airline
Seattle/Tacoma International → Nashville International
Data through July 2026 · Last updated October 18, 2026
1,476 flights were scheduled from Seattle (SEA) to Nashville (BNA) in the last 12 months, and 79.1% of those that flew arrived on time, 1.5 points above the US average of 77.6%.
Delta Air Lines was the most punctual of the 3 airlines on the route at 82.5%, while Southwest Airlines trailed at 65.3%.
February has been the best month (87% on time) and Friday the weakest day of the week (74%).
0.9% of flights were cancelled, versus 1.8% nationally.
SEA 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 |
|---|---|---|---|---|
| Delta Air Lines | 82.5% | 63 min | 1.0% | 512 |
| Alaska Airlines | 79.1% | 44 min | 0.9% | 843 |
| Southwest Airlines | 65.3% | 40 min | 0.0% | 121 |
80%+ good 70–79.9% fair <70% poor
Best time of day to fly SEA to BNA
On-time arrival % by scheduled departure hour (local time), 2,850 flights over 24 months.
Show the numbers
| Departure hour | On time | Cancelled | Flights |
|---|---|---|---|
| 6am–7am | Limited data | 9 | |
| 8am–9am | 87.2% | 0.0% | 94 |
| 9am–10am | 84.1% | 0.8% | 525 |
| 10am–11am | 67.8% | 0.3% | 334 |
| 11am–12pm | 65.2% | 0.0% | 66 |
| 1pm–2pm | Limited data | 4 | |
| 3pm–4pm | Limited data | 14 | |
| 5pm–6pm | 76.2% | 0.7% | 1,228 |
| 6pm–7pm | 87.8% | 0.0% | 41 |
| 10pm–11pm | 55.5% | 0.0% | 119 |
| 11pm–12am | 81.8% | 0.7% | 416 |
Best day of the week
24 months, by day of departure.
Best month to fly
24 months, by calendar month.
Holiday travel on SEA 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) | 81.6% | +1.2 pts | 0.0% | 38 |
| Christmas & New Year (Dec 20 - Jan 3) | 77.3% | -3.1 pts | 0.0% | 88 |
| Summer peak (Jun 15 - Aug 15) | 67.3% | -13.1 pts | 0.6% | 719 |
| All other days | 80.4% | — | 0.7% | 2,005 |
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).