Historical on-time performance
Nashville to Seattle
1,977 miData through Dec 2025Source: US DOT · BTS
Flights on BNA–SEA arrive on time 73% of the time over the last 12 months.
On-time rate73%arrived within 15 min
p90 delay40 min1 in 10 flights is worse (tail risk)
Cancelled0.7%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
- Delta Air LinesbestOn-time85%Medianon timep9025 minCancel0.3%Flights389
- Southwest AirlinesOn-time54%Median5 minp9060 minCancel0.0%Flights127
- Alaska AirlinesOn-time70%Medianon timep9045 minCancel1.0%Flights863
Why flights run late
Delay causes
- Airline30%
- Weather4%
- Air traffic (NAS)27%
- Late aircraft39%
- Security0%
Most delay minutes here are attributed to Late aircraft.
Over time
On-time trend
By season
On-time rate by month
When to fly
Best time to fly BNA → SEA
All airlines · rolling 36 months (2023-01 .. 2025-12).
Best time of day
Mornings are the most reliable time of day to fly this route — 85% on time.
- Mornings85% on time · p90 20 min · 2,690 flights
- Evenings68% on time · p90 45 min · 1,033 flights
- Afternoons66% on time · p90 55 min · 190 flights · limited
Best day of week
On-time rates are fairly even by day on this route — ranging from 75% to 85% on time.
- Wednesdays85% on time · p90 25 min · 553 flights
- Saturdays83% on time · p90 30 min · 566 flights
- Tuesdays82% on time · p90 25 min · 558 flights
- Mondays79% on time · p90 25 min · 581 flights
- Sundays76% on time · p90 30 min · 551 flights
- Thursdays76% on time · p90 40 min · 562 flights
- Fridays75% on time · p90 35 min · 575 flights
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