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

Dallas, TX (DAL) to Chicago, IL (ORD) flight delay odds

71.4% of 539 official scheduled DAL-to-ORD flights arrived on time; 17.6% arrived at least 30 minutes late and 0.9% 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
71.4%arrived on time
17.6%30+ min late
0.9%cancelled
539scheduled flights
Based on July 2025–June 2026; on time means arrival less than 15 minutes late.
60+ minutes late9.1%all scheduled flights
120+ minutes late3.9%all scheduled flights
Diverted0.7%did not reach as scheduled
Average arrival+11.7 mincompleted flights

Which departure time was most reliable for DAL to ORD?

Among qualifying DAL-to-ORD departure window results, Early morning had the highest on-time rate: 83.9% of 149 flights. Evening was lowest at 55.7% across 122 flights.

Departure windowFlightsOn time30+ minCancelled
Early morning14983.9%8.1%0.0%
Late morning15082.0%9.3%2.0%
Afternoon11858.5%22.0%0.0%
Evening12255.7%35.2%1.6%

Which weekday was most reliable for DAL to ORD?

Among qualifying DAL-to-ORD weekday results, Wednesday had the highest on-time rate: 82.9% of 76 flights. Sunday was lowest at 60.8% across 74 flights.

DayFlightsOn time30+ minCancelled
Monday8274.4%12.2%2.4%
Tuesday7678.9%11.8%0.0%
Wednesday7682.9%15.8%0.0%
Thursday8371.1%20.5%0.0%
Friday8366.3%12.0%1.2%
Saturday6564.6%24.6%3.1%
Sunday7460.8%28.4%0.0%

Which airline was most reliable for DAL to ORD?

Only Southwest Airlines met the DAL-to-ORD airline threshold: 71.4% of 539 scheduled flights arrived on time during July 2025–June 2026.

AirlineFlightsOn time30+ minCancelled
Southwest Airlines53971.4%17.6%0.9%

Which month was most reliable for DAL to ORD?

Among qualifying DAL-to-ORD month results, February 2026 had the highest on-time rate: 96.4% of 28 flights. May 2026 was lowest at 58.1% across 31 flights.

MonthFlightsOn time30+ minCancelled
July 20258960.7%30.3%1.1%
August 20257661.8%21.1%1.3%
September 20257380.8%13.7%0.0%
October 20258770.1%18.4%1.1%
November 20252979.3%6.9%6.9%
December 20253183.9%6.5%0.0%
January 20263180.6%9.7%0.0%
February 20262896.4%3.6%0.0%
March 20263174.2%9.7%0.0%
April 20263066.7%23.3%0.0%
May 20263158.1%22.6%0.0%

What drove DAL to ORD delay minutes?

Late aircraft was the largest recorded DAL-to-ORD delay category, accounting for 36.7% of 9,088 BTS-attributed delay minutes during July 2025–June 2026.

Airline23.9%
Late aircraft36.7%
National airspace35.8%
Weather3.7%
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.