Nashville (BNA) to Seattle (SEA): On-Time Performance
Data through July 2026
When you fly BNA to SEA matters as much as anything else about the booking: the route swung from 91% on-time in October 2024 to just 54% in December 2025. Across the full period the route averages 76% on-time against a national 78%. Morning departures also hold up better than evening ones (83% vs 63%), which matters most in the rough months.
- On-time
- 76%
- arrived <15 min late
- Avg delay
- 14 min
- completed flights
- Cancelled
- 0.9%
- Flights/day
- 4.0
- last 12 months
- Duration
- 5h 7m
- scheduled
- Distance
- 1,978 mi
Best airline from BNA to SEA
3 airlines flew this route regularly between 2024-07 and 2026-07.
| Airline | On-time | Avg delay | Cancelled | Flights |
|---|---|---|---|---|
| Delta Air Linesmost reliable | 84% | 11 min | 0.7% | 960 |
| Alaska Airlines | 75% | 13 min | 1.0% | 1,814 |
| Southwest Airlines | 50% | 26 min | 0.5% | 204 |
Monthly on-time trend
Best time to fly from BNA to SEA
Aim for departures around 8 a.m. (90% on-time); avoid 2 p.m. departures (36%).
By day of week
| Day | On-time | Avg delay |
|---|---|---|
| Monday | 76% | 13 min |
| Tuesday | 79% | 10 min |
| Wednesdaybest | 82% | 9 min |
| Thursday | 70% | 21 min |
| Friday | 72% | 15 min |
| Saturday | 79% | 11 min |
| Sunday | 75% | 15 min |
What causes delays on this route
Share of total delay minutes by cause, as reported by carriers to the US DOT.
- Late-arriving aircraft32%
- Airline operations36%
- National airspace system28%
- Weather4%
Frequently asked questions
- How often are flights from BNA to SEA delayed?
- 24% of BNA–SEA flights arrived 15 or more minutes late (the US DOT definition of a delay) between 2024-07 and 2026-07. The average arrival delay across completed flights was 14 minutes.
- Which airline is most reliable from BNA to SEA?
- Delta Air Lines has the best on-time record on this route at 84%, based on 960 flights. 3 airlines flew BNA–SEA frequently enough to compare in this period.
- What is the best time of day to fly from BNA to SEA?
- Departures around 8 a.m. have the best record (90% on-time), while departures around 2 p.m. have the worst (36%). As on most US routes, delays accumulate through the day, so earlier flights are generally safer.
- How long is the flight from BNA to SEA?
- The scheduled BNA–SEA flight time averages 5h 7m over 1,978 miles. Actual arrival times vary — flights on this route land 15+ minutes late 24% of the time.
- How often are BNA to SEA flights cancelled?
- 0.9% of scheduled flights on this route were cancelled between 2024-07 and 2026-07, at or below the national rate of 1.6%.
- What is the worst month to fly from BNA to SEA?
- December 2025 was the roughest month in this dataset, with only 54% of arrivals on time. The best was October 2024 at 91%. If your dates are flexible, that 37-point gap is worth planning around.
Explore related pages
More routes from BNA
Other ways to fly to Seattle (SEA)
Related guides
Based on 2,978 flights, 2024-07–2026-07. Source: US DOT Bureau of Transportation Statistics. Updated 2026-09-28.