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

Nashville, TN (BNA) to Ontario, CA (ONT) flight delay odds

67.3% of 336 official scheduled BNA-to-ONT flights arrived on time; 15.8% arrived at least 30 minutes late and 0.3% 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 SIGNALVariable
67.3%arrived on time
15.8%30+ min late
0.3%cancelled
336scheduled flights
Based on July 2025–June 2026; on time means arrival less than 15 minutes late.
60+ minutes late6.5%all scheduled flights
120+ minutes late1.5%all scheduled flights
Diverted0.0%did not reach as scheduled
Average arrival+10.1 mincompleted flights

Which departure time was most reliable for BNA to ONT?

Among qualifying BNA-to-ONT departure window results, Afternoon had the highest on-time rate: 67.2% of 229 flights. Evening was lowest at 55.9% across 68 flights.

Departure windowFlightsOn time30+ minCancelled
Afternoon22967.2%14.8%0.4%
Evening6855.9%26.5%0.0%

Which weekday was most reliable for BNA to ONT?

Among qualifying BNA-to-ONT weekday results, Wednesday had the highest on-time rate: 79.1% of 43 flights. Tuesday was lowest at 51.1% across 45 flights.

DayFlightsOn time30+ minCancelled
Monday4971.4%10.2%0.0%
Tuesday4551.1%20.0%0.0%
Wednesday4379.1%14.0%0.0%
Thursday4872.9%10.4%0.0%
Friday4977.6%12.2%0.0%
Saturday5267.3%19.2%0.0%
Sunday5052.0%24.0%2.0%

Which airline was most reliable for BNA to ONT?

Only Southwest Airlines met the BNA-to-ONT airline threshold: 67.3% of 336 scheduled flights arrived on time during July 2025–June 2026.

AirlineFlightsOn time30+ minCancelled
Southwest Airlines33667.3%15.8%0.3%

Which month was most reliable for BNA to ONT?

Among qualifying BNA-to-ONT month results, November 2025 had the highest on-time rate: 89.7% of 29 flights. June 2026 was lowest at 33.3% across 30 flights.

MonthFlightsOn time30+ minCancelled
July 20253151.6%29.0%0.0%
August 20253183.9%9.7%0.0%
September 20253073.3%10.0%0.0%
October 20253145.2%25.8%0.0%
November 20252989.7%6.9%0.0%
December 20253171.0%16.1%0.0%
February 20261968.4%5.3%0.0%
March 20262986.2%3.4%0.0%
April 20263066.7%13.3%0.0%
May 20263167.7%19.4%0.0%
June 20263033.3%33.3%0.0%

What drove BNA to ONT delay minutes?

Late aircraft was the largest recorded BNA-to-ONT delay category, accounting for 47.1% of 4,658 BTS-attributed delay minutes during July 2025–June 2026.

Airline32.8%
Late aircraft47.1%
National airspace15.0%
Weather4.2%
Security0.9%
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.