BTS DATA COMPLETE THROUGH JUNE 2026HISTORICAL ODDS · NOT LIVE FLIGHT STATUS
DelayOddsKnow the route before you book
SEA→BNA

Seattle, WA (SEA) to Nashville, TN (BNA) flight delay odds

77.9% of 1,479 official scheduled SEA-to-BNA flights arrived on time; 12.6% arrived at least 30 minutes late and 0.8% were cancelled during July 2025–June 2026.

Source: U.S. Bureau of Transportation Statistics · Reporting window: July 2025–June 2026 · Updated September 16, 2026

HISTORICAL ROUTE SIGNALGenerally reliable
77.9%arrived on time
12.6%30+ min late
0.8%cancelled
1,479scheduled flights
Based on July 2025–June 2026; on time means arrival less than 15 minutes late.
60+ minutes late4.5%all scheduled flights
120+ minutes late1.0%all scheduled flights
Diverted0.1%did not reach as scheduled
Average arrival+1.1 mincompleted flights

Which departure time was most reliable for SEA to BNA?

Among qualifying SEA-to-BNA departure window results, Early morning had the highest on-time rate: 86.9% of 99 flights. Night was lowest at 75.2% across 266 flights.

Departure windowFlightsOn time30+ minCancelled
Early morning9986.9%7.1%0.0%
Late morning48379.1%11.2%0.4%
Evening61776.2%13.8%1.1%
Night26675.2%15.0%1.1%

Which weekday was most reliable for SEA to BNA?

Among qualifying SEA-to-BNA weekday results, Wednesday had the highest on-time rate: 84.2% of 203 flights. Tuesday was lowest at 74.1% across 212 flights.

DayFlightsOn time30+ minCancelled
Monday21279.2%15.1%0.0%
Tuesday21274.1%15.6%0.0%
Wednesday20384.2%5.4%1.0%
Thursday21579.5%10.2%0.9%
Friday21776.0%13.4%0.9%
Saturday20277.2%14.9%1.0%
Sunday21875.2%13.3%1.8%

Which airline was most reliable for SEA to BNA?

Among qualifying SEA-to-BNA airline results, Delta Air Lines had the highest on-time rate: 84.1% of 511 flights. Southwest Airlines was lowest at 64.8% across 125 flights.

AirlineFlightsOn time30+ minCancelled
Alaska Airlines84376.0%12.8%1.1%
Delta Air Lines51184.1%10.2%0.6%
Southwest Airlines12564.8%20.8%0.0%

Which month was most reliable for SEA to BNA?

Among qualifying SEA-to-BNA month results, April 2026 had the highest on-time rate: 92.4% of 118 flights. August 2025 was lowest at 63.6% across 176 flights.

MonthFlightsOn time30+ minCancelled
July 202518863.8%20.2%0.5%
August 202517663.6%22.7%0.6%
September 202513477.6%14.2%0.0%
October 202511776.9%13.7%1.7%
November 20258884.1%8.0%0.0%
December 20259078.9%13.3%0.0%
January 20268177.8%9.9%6.2%
February 20267690.8%5.3%0.0%
March 20269186.8%7.7%1.1%
April 202611892.4%3.4%0.0%
May 202614381.8%7.7%0.7%
June 202617781.4%11.3%0.6%

What drove SEA to BNA delay minutes?

Airline was the largest recorded SEA-to-BNA delay category, accounting for 41.5% of 14,817 BTS-attributed delay minutes during July 2025–June 2026.

Airline41.5%
Late aircraft34.2%
National airspace21.8%
Weather2.3%
Security0.2%
This is historical evidence, not a forecast.

Weather, schedules and operations change. For a trip you have already booked, use the airline or airport for live status.