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Flight Reliability

UA 4794 · United Airlines

SBN → Chicago (SBN–ORD)97% of its flights flew this route. The rest (ORD–COU) are included in these numbers.

67
Usually Fine
WanderNerd Reliability Score
73%
Arrive within 15 minutes
19 min
Average arrival delay
2.2%
Cancelled
0 min
Median arrival delay

Based on 364 historical flights. Data through May 2026.

What the data says

Skip Saturday if you can.

UA 4794 arrived on time 79% of the time on Sundays. On Saturdays: 69%.

Better than the SBN–ORD route average.

UA 4794 arrived on time 73% of the time, versus 66% across the SBN–ORD route.

A bit behind the United Airlines network.

UA 4794 arrived on time 73% of the time, versus 79% across the United Airlines network.

Trending in the right direction.

UA 4794 arrived on time 74% of the time over the last three months in the data, compared with 63% in the three months before that.

The breakdown

On-time by weekday
  • Mon71%(51 flights)
  • Tue70%(50 flights)
  • Wed78%(51 flights)
  • Thu71%(51 flights)
  • Fri75%(51 flights)
  • Sat69%(49 flights)
  • Sun79%(52 flights)
On-time by departure window
  • 6–9 AM73%(11 flights)
  • 9 AM–12 PM73%(344 flights)
On-time trend by month
73%
May

Jun 90% → May 73% on time

On-time arrival percentage by month
MonthOn-time percentageFlights
June 202590%30
July 202574%31
August 202581%31
September 202573%30
October 202581%31
November 202570%27
December 202562%29
January 202661%31
February 202664%28
March 202660%30
April 202689%27
May 202673%30
Departures on time
84%
Diverted
0.3%
Flights flown
355
Months covered
12

Same route, other flights

Keep nerding

Based on 364 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.