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

Chicago, IL (ORD) to Duluth, MN (DLH) flight delay odds

61.8% of 1,216 official scheduled ORD-to-DLH flights arrived on time; 23.6% arrived at least 30 minutes late and 3.9% 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 SIGNALVariable
61.8%arrived on time
23.6%30+ min late
3.9%cancelled
1,216scheduled flights
Based on July 2025–June 2026; on time means arrival less than 15 minutes late.
60+ minutes late13.6%all scheduled flights
120+ minutes late6.2%all scheduled flights
Diverted0.4%did not reach as scheduled
Average arrival+23.1 mincompleted flights

Which departure time was most reliable for ORD to DLH?

Among qualifying ORD-to-DLH departure window results, Late morning had the highest on-time rate: 77.6% of 49 flights. Evening was lowest at 55.3% across 309 flights.

Departure windowFlightsOn time30+ minCancelled
Early morning24466.4%18.0%3.7%
Late morning4977.6%14.3%0.0%
Afternoon53862.6%24.3%3.0%
Evening30955.3%28.8%4.2%
Night7657.9%21.1%11.8%

Which weekday was most reliable for ORD to DLH?

Among qualifying ORD-to-DLH weekday results, Tuesday had the highest on-time rate: 69.8% of 169 flights. Wednesday was lowest at 54.4% across 171 flights.

DayFlightsOn time30+ minCancelled
Monday17859.0%24.7%5.6%
Tuesday16969.8%20.1%2.4%
Wednesday17154.4%30.4%2.9%
Thursday18065.0%20.0%3.9%
Friday17856.2%24.7%3.9%
Saturday16268.5%23.5%4.3%
Sunday17860.7%21.9%3.9%

Which airline was most reliable for ORD to DLH?

Among qualifying ORD-to-DLH airline results, Republic Airways had the highest on-time rate: 71.1% of 83 flights. SkyWest Airlines was lowest at 61.2% across 1,133 flights.

AirlineFlightsOn time30+ minCancelled
SkyWest Airlines1,13361.2%24.5%3.6%
Republic Airways8371.1%10.8%7.2%

Which month was most reliable for ORD to DLH?

Among qualifying ORD-to-DLH month results, October 2025 had the highest on-time rate: 73.7% of 114 flights. December 2025 was lowest at 38.1% across 63 flights.

MonthFlightsOn time30+ minCancelled
July 202511366.4%24.8%1.8%
August 202510766.4%20.6%2.8%
September 202511967.2%20.2%0.8%
October 202511473.7%14.0%0.0%
November 20258955.1%32.6%4.5%
December 20256338.1%47.6%7.9%
January 20266250.0%27.4%1.6%
February 20267361.6%19.2%2.7%
March 202611049.1%31.8%11.8%
April 202613759.1%20.4%8.0%
May 202613467.9%21.6%0.7%
June 20269570.5%15.8%4.2%

What drove ORD to DLH delay minutes?

Airline was the largest recorded ORD-to-DLH delay category, accounting for 37.8% of 32,919 BTS-attributed delay minutes during July 2025–June 2026.

Airline37.8%
Late aircraft30.9%
National airspace20.5%
Weather10.7%
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.