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

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

Historically, 66.9% of scheduled reportable flights on this direction arrived on time in July 2025–June 2026. The sample includes 2,306 flights.

HISTORICAL ROUTE SIGNALVariable
66.9%arrived on time
19.4%30+ min late
2.9%cancelled
2,306scheduled flights
Based on July 2025–June 2026; on time means arrival less than 15 minutes late.
60+ minutes late10.5%all scheduled flights
120+ minutes late4.2%all scheduled flights
Diverted0.1%did not reach as scheduled
Average arrival+14.0 mincompleted flights

When is this route most reliable?

The same route can behave differently through the day. These are scheduled departure windows, not actual departure times. Small time windows with fewer than 40 flights are withheld.

Departure windowFlightsOn time30+ minCancelled
Early morning33883.7%8.3%2.4%
Late morning34169.8%17.9%1.2%
Afternoon56175.8%13.7%2.9%
Evening48761.0%24.6%3.7%
Night57951.6%27.8%3.6%

Weekday comparison

Day-of-week results use at least 30 scheduled flights per row. Look for broad patterns, not tiny percentage differences.

DayFlightsOn time30+ minCancelled
Monday34067.9%20.6%3.2%
Tuesday31171.7%15.1%3.2%
Wednesday28969.6%19.4%0.3%
Thursday35569.6%18.6%1.7%
Friday33366.1%19.2%2.7%
Saturday31762.5%19.9%4.7%
Sunday36161.5%22.4%4.2%

Airline comparison

Marketing-carrier results make codeshare flights easier to compare as travelers buy them. Dedicated route-airline reports require at least 160 flights.

AirlineFlightsOn time30+ minCancelled
American Airlines1,98464.9%20.5%2.9%
Frontier Airlines32278.9%12.4%2.8%

Monthly trend

Month-by-month results show whether a twelve-month average hides an unusual period.

MonthFlightsOn time30+ minCancelled
July 202522448.2%38.8%3.6%
August 202521255.7%29.2%3.8%
September 202518371.6%14.8%2.2%
October 202520767.6%18.4%1.0%
November 202518868.6%17.0%2.7%
December 202520173.1%14.4%1.0%
January 202616867.9%13.7%8.3%
February 202615285.5%7.2%2.0%
March 202618483.7%10.3%1.6%
April 202618067.2%17.8%1.1%
May 202619764.5%19.8%3.6%
June 202621058.6%22.9%4.3%

What drove reported delay minutes?

BTS cause minutes are reported for qualifying delayed flights. These shares describe recorded delay minutes—not the chance that a particular cause will affect your next flight.

Airline30.8%
Late aircraft53.7%
National airspace8.5%
Weather7.0%
Security0.0%
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.