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

Ontario, CA (ONT) to Dallas/Fort Worth, TX (DFW) flight delay odds

75.2% of 2,307 official scheduled ONT-to-DFW flights arrived on time; 13.6% arrived at least 30 minutes late and 3.0% 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
75.2%arrived on time
13.6%30+ min late
3.0%cancelled
2,307scheduled flights
Based on July 2025–June 2026; on time means arrival less than 15 minutes late.
60+ minutes late8.0%all scheduled flights
120+ minutes late3.6%all scheduled flights
Diverted0.8%did not reach as scheduled
Average arrival+11.5 mincompleted flights

Which departure time was most reliable for ONT to DFW?

Among qualifying ONT-to-DFW departure window results, Early morning had the highest on-time rate: 83.8% of 832 flights. Evening was lowest at 66.4% across 110 flights.

Departure windowFlightsOn time30+ minCancelled
Early morning83283.8%7.3%2.4%
Late morning38472.4%14.6%2.1%
Afternoon67566.4%20.9%3.3%
Evening11066.4%13.6%6.4%
Night30677.8%13.1%4.2%

Which weekday was most reliable for ONT to DFW?

Among qualifying ONT-to-DFW weekday results, Thursday had the highest on-time rate: 80.0% of 350 flights. Saturday was lowest at 70.8% across 319 flights.

DayFlightsOn time30+ minCancelled
Monday33774.8%14.2%3.3%
Tuesday31878.3%8.8%3.1%
Wednesday29077.2%15.2%0.7%
Thursday35080.0%11.7%1.1%
Friday33474.3%15.9%3.9%
Saturday31970.8%14.4%4.1%
Sunday35971.0%14.8%4.7%

Which airline was most reliable for ONT to DFW?

Among qualifying ONT-to-DFW airline results, American Airlines had the highest on-time rate: 75.5% of 1,985 flights. Frontier Airlines was lowest at 73.0% across 322 flights.

AirlineFlightsOn time30+ minCancelled
American Airlines1,98575.5%13.5%3.0%
Frontier Airlines32273.0%14.0%3.4%

Which month was most reliable for ONT to DFW?

Among qualifying ONT-to-DFW month results, April 2026 had the highest on-time rate: 87.2% of 180 flights. July 2025 was lowest at 62.5% across 224 flights.

MonthFlightsOn time30+ minCancelled
July 202522462.5%23.7%4.5%
August 202521362.9%20.7%3.8%
September 202518373.8%13.7%2.7%
October 202520778.3%14.0%1.4%
November 202518873.4%14.4%2.7%
December 202520180.6%11.4%1.5%
January 202616874.4%8.9%8.9%
February 202615284.9%5.3%1.3%
March 202618479.9%8.2%1.1%
April 202618087.2%8.3%1.1%
May 202619778.2%11.2%3.6%
June 202621071.9%17.6%3.8%

What drove ONT to DFW delay minutes?

Late aircraft was the largest recorded ONT-to-DFW delay category, accounting for 43.7% of 45,255 BTS-attributed delay minutes during July 2025–June 2026.

Airline41.1%
Late aircraft43.7%
National airspace11.8%
Weather3.3%
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.