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Route Reliability

Chicago → DEC

ORD–DEC · 156 miles · Chicago O'Hare International Airport to DEC Airport

58
A Little Dicey
WanderNerd Reliability Score
71%
Arrive within 15 minutes
20 min
Average arrival delay
3.7%
Cancelled
627
Flights in the data

Data through May 2026.

United Airlines is the only airline in this data on this route, arriving on time 71% of the time across 627 flights. No comparison to make.

What the data says

Morning flights do better here.

ORD–DEC flights departing between 6–9 AM arrived on time 83% of the time, versus 59% between 3–6 PM.

Tuesdays have been rough.

ORD–DEC flights arrived on time 78% of the time on Fridays and just 63% on Tuesdays. That gap is worth planning around.

Keep a backup plan handy.

This route was cancelled 3.7% of the time. Typical for U.S. flights is around 1–2%.

Flights on this route

The breakdown

On-time by weekday
  • Mon70%(98 flights)
  • Tue63%(54 flights)
  • Wed71%(99 flights)
  • Thu74%(98 flights)
  • Fri78%(102 flights)
  • Sat67%(51 flights)
  • Sun67%(100 flights)
On-time by departure window
  • 6–9 AM83%(292 flights)
  • 3–6 PM59%(310 flights)
On-time trend by month
64%
May

Jun 81% → May 64% on time

On-time arrival percentage by month
MonthOn-time percentageFlights
June 202581%52
July 202573%52
August 202575%52
September 202588%51
October 202587%54
November 202572%47
December 202561%51
January 202657%49
February 202671%48
March 202667%45
April 202651%49
May 202664%52

Keep nerding

Based on 627 historical flights, because apparently we checked. Historical flight data: U.S. Bureau of Transportation Statistics, June 2025 – May 2026. Data through May 2026. How we calculate this.