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Flight Reliability

UA 3690 · United Airlines

Chicago → Indianapolis (ORD–IND)85% of its flights flew this route. The rest (ORF–ORD, FSD–ORD) are included in these numbers.

78
Usually Fine
WanderNerd Reliability Score
82%
Arrive within 15 minutes
6 min
Average arrival delay
2.5%
Cancelled
4 min early
Median arrival delay

Based on 394 historical flights. Data through May 2026.

What the data says

The 12–3 PM departure wins.

UA 3690 departing between 12–3 PM arrived on time 92% of the time, versus 80% between 3–6 PM.

Skip Monday if you can.

UA 3690 arrived on time 88% of the time on Saturdays. On Mondays: 75%.

Better than the ORD–IND route average.

UA 3690 arrived on time 82% of the time, versus 74% across the ORD–IND route.

Trending in the right direction.

UA 3690 arrived on time 86% of the time over the last three months in the data, compared with 78% in the three months before that.

The breakdown

On-time by weekday
  • Mon75%(52 flights)
  • Tue78%(55 flights)
  • Wed80%(55 flights)
  • Thu82%(55 flights)
  • Fri86%(55 flights)
  • Sat88%(57 flights)
  • Sun82%(54 flights)
On-time by departure window
  • 9 AM–12 PM91%(11 flights)
  • 12–3 PM92%(25 flights)
  • 3–6 PM80%(342 flights)
  • 6–9 PM—(5 flights)
On-time trend by month
93%
May

Jun 62% → May 93% on time

On-time arrival percentage by month
MonthOn-time percentageFlights
June 202562%29
July 202558%31
August 202587%31
September 202593%30
October 202593%55
November 202584%25
December 202563%30
January 202677%31
February 202693%28
March 202683%35
April 202682%28
May 202693%30
Departures on time
84%
Diverted
0.3%
Flights flown
383
Months covered
12

Same route, other flights

Keep nerding

Based on 394 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.