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

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

Historically, 75.2% of scheduled reportable flights on this direction arrived on time in July 2025–June 2026. The sample includes 2,307 flights.

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

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 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%

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
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%

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 Airlines1,98575.5%13.5%3.0%
Frontier Airlines32273.0%14.0%3.4%

Monthly trend

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

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 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.

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.