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

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

71.7% of 1,479 official scheduled BNA-to-SEA flights arrived on time; 15.5% arrived at least 30 minutes late and 1.1% 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
71.7%arrived on time
15.5%30+ min late
1.1%cancelled
1,479scheduled flights
Based on July 2025–June 2026; on time means arrival less than 15 minutes late.
60+ minutes late6.3%all scheduled flights
120+ minutes late2.2%all scheduled flights
Diverted0.2%did not reach as scheduled
Average arrival+8.0 mincompleted flights

Which departure time was most reliable for BNA to SEA?

Among qualifying BNA-to-SEA departure window results, Late morning had the highest on-time rate: 84.1% of 145 flights. Evening was lowest at 57.0% across 374 flights.

Departure windowFlightsOn time30+ minCancelled
Early morning73078.5%11.1%1.5%
Late morning14584.1%6.9%0.7%
Afternoon23066.5%15.2%0.9%
Evening37457.0%27.5%0.8%

Which weekday was most reliable for BNA to SEA?

Among qualifying BNA-to-SEA weekday results, Wednesday had the highest on-time rate: 80.3% of 203 flights. Friday was lowest at 65.7% across 216 flights.

DayFlightsOn time30+ minCancelled
Monday21869.7%16.5%1.4%
Tuesday21273.6%10.4%0.5%
Wednesday20380.3%10.3%1.0%
Thursday20967.5%19.1%0.5%
Friday21665.7%21.8%2.3%
Saturday20976.1%13.9%0.0%
Sunday21269.8%16.0%2.4%

Which airline was most reliable for BNA to SEA?

Among qualifying BNA-to-SEA airline results, Delta Air Lines had the highest on-time rate: 82.8% of 511 flights. Southwest Airlines was lowest at 44.0% across 125 flights.

AirlineFlightsOn time30+ minCancelled
Alaska Airlines84369.2%17.0%1.4%
Delta Air Lines51182.8%8.4%0.8%
Southwest Airlines12544.0%34.4%0.8%

Which month was most reliable for BNA to SEA?

Among qualifying BNA-to-SEA month results, February 2026 had the highest on-time rate: 84.2% of 76 flights. December 2025 was lowest at 54.4% across 90 flights.

MonthFlightsOn time30+ minCancelled
July 202518871.3%16.5%0.5%
August 202517663.1%25.6%1.1%
September 202513574.8%16.3%0.0%
October 202511775.2%8.5%1.7%
November 20258876.1%13.6%0.0%
December 20259054.4%20.0%0.0%
January 20268163.0%18.5%7.4%
February 20267684.2%7.9%0.0%
March 20269170.3%17.6%1.1%
April 202611883.9%7.6%0.0%
May 202614278.9%9.9%0.7%
June 202617768.4%17.5%2.3%

What drove BNA to SEA delay minutes?

Airline was the largest recorded BNA-to-SEA delay category, accounting for 36.6% of 21,094 BTS-attributed delay minutes during July 2025–June 2026.

Airline36.6%
Late aircraft32.3%
National airspace26.8%
Weather4.0%
Security0.3%
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.