Historical on-time performance
Seattle to Nashville
1,977 miData through Dec 2025Source: US DOT · BTS
Flights on SEA–BNA arrive on time 72% of the time over the last 12 months.
On-time rate72%arrived within 15 min
p90 delay40 min1 in 10 flights is worse (tail risk)
Cancelled0.5%of scheduled flights
based on 1,379 flights over the last 12 months. On-time means arriving within 15 minutes (BTS standard).
By airline
How each carrier compares
- Southwest AirlinesOn-time66%Median5 minp9050 minCancel0.0%Flights127
- Delta Air LinesbestOn-time79%Medianon timep9045 minCancel0.0%Flights389
- Alaska AirlinesOn-time70%Medianon timep9035 minCancel0.8%Flights863
Why flights run late
Delay causes
- Airline39%
- Weather0%
- Air traffic (NAS)25%
- Late aircraft36%
- Security0%
Most delay minutes here are attributed to Airline.
Over time
On-time trend
By season
On-time rate by month
When to fly
Best time to fly SEA → BNA
All airlines · rolling 36 months (2023-01 .. 2025-12).
Best time of day
On-time rates are fairly even by time of day on this route — ranging from 70% to 81% on time.
- Mornings81% on time · p90 25 min · 554 flights
- Overnights78% on time · p90 30 min · 610 flights
- Evenings76% on time · p90 35 min · 2,007 flights
- Middays70% on time · p90 35 min · 757 flights
Best day of week
On-time rates are fairly even by day on this route — ranging from 74% to 80% on time.
- Wednesdays80% on time · p90 25 min · 556 flights
- Tuesdays78% on time · p90 35 min · 554 flights
- Mondays75% on time · p90 35 min · 571 flights
- Saturdays75% on time · p90 30 min · 518 flights
- Thursdays75% on time · p90 30 min · 573 flights
- Sundays74% on time · p90 35 min · 597 flights
- Fridays74% on time · p90 40 min · 577 flights
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